Adipocytes: Cells in the body that store FATS, usually in the form of TRIGLYCERIDES. WHITE ADIPOCYTES are the predominant type and found mostly in the abdominal cavity and subcutaneous tissue. BROWN ADIPOCYTES are thermogenic cells that can be found in newborns of some species and hibernating mammals.Adipose Tissue: Specialized connective tissue composed of fat cells (ADIPOCYTES). It is the site of stored FATS, usually in the form of TRIGLYCERIDES. In mammals, there are two types of adipose tissue, the WHITE FAT and the BROWN FAT. Their relative distributions vary in different species with most adipose tissue being white.Adipose Tissue, Brown: A thermogenic form of adipose tissue composed of BROWN ADIPOCYTES. It is found in newborns of many species including humans, and in hibernating mammals. Brown fat is richly vascularized, innervated, and densely packed with MITOCHONDRIA which can generate heat directly from the stored lipids.Fats: The glyceryl esters of a fatty acid, or of a mixture of fatty acids. They are generally odorless, colorless, and tasteless if pure, but they may be flavored according to origin. Fats are insoluble in water, soluble in most organic solvents. They occur in animal and vegetable tissue and are generally obtained by boiling or by extraction under pressure. They are important in the diet (DIETARY FATS) as a source of energy. (Grant & Hackh's Chemical Dictionary, 5th ed)Dietary Fats: Fats present in food, especially in animal products such as meat, meat products, butter, ghee. They are present in lower amounts in nuts, seeds, and avocados.3T3-L1 Cells: A continuous cell line that is a substrain of SWISS 3T3 CELLS developed though clonal isolation. The mouse fibroblast cells undergo an adipose-like conversion as they move to a confluent and contact-inhibited state.Adipocytes, White: Fat cells with light coloration and few MITOCHONDRIA. They contain a scant ring of CYTOPLASM surrounding a single large lipid droplet or vacuole.Adipose Tissue, White: Fatty tissue composed of WHITE ADIPOCYTES and generally found directly under the skin (SUBCUTANEOUS FAT) and around the internal organs (ABDOMINAL FAT). It has less vascularization and less coloration than the BROWN FAT. White fat provides heat insulation, mechanical cushion, and source of energy.Lipolysis: The metabolic process of breaking down LIPIDS to release FREE FATTY ACIDS, the major oxidative fuel for the body. Lipolysis may involve dietary lipids in the DIGESTIVE TRACT, circulating lipids in the BLOOD, and stored lipids in the ADIPOSE TISSUE or the LIVER. A number of enzymes are involved in such lipid hydrolysis, such as LIPASE and LIPOPROTEIN LIPASE from various tissues.Hemolymph: The blood/lymphlike nutrient fluid of some invertebrates.Subcutaneous Fat: Fatty tissue under the SKIN through out the body.Insect Proteins: Proteins found in any species of insect.Insulin: A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1).Larva: Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.Ecdysterone: A steroid hormone that regulates the processes of MOLTING or ecdysis in insects. Ecdysterone is the 20-hydroxylated ECDYSONE.Intra-Abdominal Fat: Fatty tissue inside the ABDOMINAL CAVITY, including visceral fat and retroperitoneal fat. It is the most metabolically active fat in the body and easily accessible for LIPOLYSIS. Increased visceral fat is associated with metabolic complications of OBESITY.Adipogenesis: The differentiation of pre-adipocytes into mature ADIPOCYTES.Obesity: A status with BODY WEIGHT that is grossly above the acceptable or desirable weight, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).Glucose Transporter Type 4: A glucose transport protein found in mature MUSCLE CELLS and ADIPOCYTES. It promotes transport of glucose from the BLOOD into target TISSUES. The inactive form of the protein is localized in CYTOPLASMIC VESICLES. In response to INSULIN, it is translocated to the PLASMA MEMBRANE where it facilitates glucose uptake.Manduca: A genus of sphinx or hawk moths of the family Sphingidae. These insects are used in molecular biology studies during all stages of their life cycle.Lipid Metabolism: Physiological processes in biosynthesis (anabolism) and degradation (catabolism) of LIPIDS.Vitellogenesis: The active production and accumulation of VITELLINS (egg yolk proteins) in the non-mammalian OOCYTES from circulating precursors, VITELLOGENINS. Vitellogenesis usually begins after the first MEIOSIS and is regulated by estrogenic hormones.Vitellogenins: Phospholipoglycoproteins produced in the fat body of egg-laying animals such as non-mammalian VERTEBRATES; ARTHROPODS; and others. Vitellogenins are secreted into the HEMOLYMPH, and taken into the OOCYTES by receptor-mediated ENDOCYTOSIS to form the major yolk proteins, VITELLINS. Vitellogenin production is under the regulation of steroid hormones, such as ESTRADIOL and JUVENILE HORMONES in insects.Glucose: A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement.Leptin: A 16-kDa peptide hormone secreted from WHITE ADIPOCYTES. Leptin serves as a feedback signal from fat cells to the CENTRAL NERVOUS SYSTEM in regulation of food intake, energy balance, and fat storage.Bombyx: A genus of silkworm MOTHS in the family Bombycidae of the order LEPIDOPTERA. The family contains a single species, Bombyx mori from the Greek for silkworm + mulberry tree (on which it feeds). A native of Asia, it is sometimes reared in this country. It has long been raised for its SILK and after centuries of domestication it probably does not exist in nature. It is used extensively in experimental GENETICS. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p519)Insulin Resistance: Diminished effectiveness of INSULIN in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent HYPERGLYCEMIA or KETOSIS.Fat Body: A nutritional reservoir of fatty tissue found mainly in insects and amphibians.RNA, Messenger: RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.3T3 Cells: Cell lines whose original growing procedure consisted being transferred (T) every 3 days and plated at 300,000 cells per plate (J Cell Biol 17:299-313, 1963). Lines have been developed using several different strains of mice. Tissues are usually fibroblasts derived from mouse embryos but other types and sources have been developed as well. The 3T3 lines are valuable in vitro host systems for oncogenic virus transformation studies, since 3T3 cells possess a high sensitivity to CONTACT INHIBITION.Fatty Acids: Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)Monosaccharide Transport Proteins: A large group of membrane transport proteins that shuttle MONOSACCHARIDES across CELL MEMBRANES.Abdominal Fat: Fatty tissue in the region of the ABDOMEN. It includes the ABDOMINAL SUBCUTANEOUS FAT and the INTRA-ABDOMINAL FAT.Body Fat Distribution: Deposits of ADIPOSE TISSUE throughout the body. The pattern of fat deposits in the body regions is an indicator of health status. Excess ABDOMINAL FAT increases health risks more than excess fat around the hips or thighs, therefore, WAIST-HIP RATIO is often used to determine health risks.Insect Hormones: Hormones secreted by insects. They influence their growth and development. Also synthetic substances that act like insect hormones.Juvenile Hormones: Compounds, either natural or synthetic, which block development of the growing insect.Gene Expression Regulation: Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.Pyrrolidonecarboxylic Acid: A cyclized derivative of L-GLUTAMIC ACID. Elevated blood levels may be associated with problems of GLUTAMINE or GLUTATHIONE metabolism.Diptera: An order of the class Insecta. Wings, when present, number two and distinguish Diptera from other so-called flies, while the halteres, or reduced hindwings, separate Diptera from other insects with one pair of wings. The order includes the families Calliphoridae, Oestridae, Phoridae, SARCOPHAGIDAE, Scatophagidae, Sciaridae, SIMULIIDAE, Tabanidae, Therevidae, Trypetidae, CERATOPOGONIDAE; CHIRONOMIDAE; CULICIDAE; DROSOPHILIDAE; GLOSSINIDAE; MUSCIDAE; TEPHRITIDAE; and PSYCHODIDAE. The larval form of Diptera species are called maggots (see LARVA).Adiponectin: A 30-kDa COMPLEMENT C1Q-related protein, the most abundant gene product secreted by FAT CELLS of the white ADIPOSE TISSUE. Adiponectin modulates several physiological processes, such as metabolism of GLUCOSE and FATTY ACIDS, and immune responses. Decreased plasma adiponectin levels are associated with INSULIN RESISTANCE; TYPE 2 DIABETES MELLITUS; OBESITY; and ATHEROSCLEROSIS.PPAR gamma: A nuclear transcription factor. Heterodimerization with RETINOID X RECEPTOR ALPHA is important in regulation of GLUCOSE metabolism and CELL GROWTH PROCESSES. It is a target of THIAZOLIDINEDIONES for control of DIABETES MELLITUS.TriglyceridesMice, Obese: Mutant mice exhibiting a marked obesity coupled with overeating, hyperglycemia, hyperinsulinemia, marked insulin resistance, and infertility when in a homozygous state. They may be inbred or hybrid.Subcutaneous Fat, Abdominal: Fatty tissue under the SKIN in the region of the ABDOMEN.Cell Differentiation: Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.Drosophila Proteins: Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MELANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.Drosophila melanogaster: A species of fruit fly much used in genetics because of the large size of its chromosomes.Body Composition: The relative amounts of various components in the body, such as percentage of body fat.Body Weight: The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.Thermogenesis: The generation of heat in order to maintain body temperature. The uncoupled oxidation of fatty acids contained within brown adipose tissue and SHIVERING are examples of thermogenesis in MAMMALS.Grasshoppers: Plant-eating orthopterans having hindlegs adapted for jumping. There are two main families: Acrididae and Romaleidae. Some of the more common genera are: Melanoplus, the most common grasshopper; Conocephalus, the eastern meadow grasshopper; and Pterophylla, the true katydid.Ecdysone: A steroid hormone that regulates the processes of MOLTING or ecdysis in insects.Energy Metabolism: The chemical reactions involved in the production and utilization of various forms of energy in cells.Adipokines: Polypeptides produced by the ADIPOCYTES. They include LEPTIN; ADIPONECTIN; RESISTIN; and many cytokines of the immune system, such as TUMOR NECROSIS FACTOR-ALPHA; INTERLEUKIN-6; and COMPLEMENT FACTOR D (also known as ADIPSIN). They have potent autocrine, paracrine, and endocrine functions.Lipoprotein Lipase: An enzyme of the hydrolase class that catalyzes the reaction of triacylglycerol and water to yield diacylglycerol and a fatty acid anion. The enzyme hydrolyzes triacylglycerols in chylomicrons, very-low-density lipoproteins, low-density lipoproteins, and diacylglycerols. It occurs on capillary endothelial surfaces, especially in mammary, muscle, and adipose tissue. Genetic deficiency of the enzyme causes familial hyperlipoproteinemia Type I. (Dorland, 27th ed) EC 3.1.1.34.Adiposity: The amount of fat or lipid deposit at a site or an organ in the body, an indicator of body fat status.Lipids: A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed)Carrier Proteins: Transport proteins that carry specific substances in the blood or across cell membranes.Sterol Esterase: An enzyme that catalyzes the hydrolysis of CHOLESTEROL ESTERS and some other sterol esters, to liberate cholesterol plus a fatty acid anion.Genes, Insect: The functional hereditary units of INSECTS.Lipase: An enzyme of the hydrolase class that catalyzes the reaction of triacylglycerol and water to yield diacylglycerol and a fatty acid anion. It is produced by glands on the tongue and by the pancreas and initiates the digestion of dietary fats. (From Dorland, 27th ed) EC 3.1.1.3.Lepidoptera: A large order of insects comprising the butterflies and moths.Epididymis: The convoluted cordlike structure attached to the posterior of the TESTIS. Epididymis consists of the head (caput), the body (corpus), and the tail (cauda). A network of ducts leaving the testis joins into a common epididymal tubule proper which provides the transport, storage, and maturation of SPERMATOZOA.Diet, High-Fat: Consumption of excessive DIETARY FATS.Cells, Cultured: Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.Aedes: A genus of mosquitoes (CULICIDAE) frequently found in tropical and subtropical regions. YELLOW FEVER and DENGUE are two of the diseases that can be transmitted by species of this genus.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Fatty Acids, Nonesterified: FATTY ACIDS found in the plasma that are complexed with SERUM ALBUMIN for transport. These fatty acids are not in glycerol ester form.Glycerol: A trihydroxy sugar alcohol that is an intermediate in carbohydrate and lipid metabolism. It is used as a solvent, emollient, pharmaceutical agent, and sweetening agent.Omentum: A double-layered fold of peritoneum that attaches the STOMACH to other organs in the ABDOMINAL CAVITY.Mice, Inbred C57BLMitochondrial Proteins: Proteins encoded by the mitochondrial genome or proteins encoded by the nuclear genome that are imported to and resident in the MITOCHONDRIA.Moths: Insects of the suborder Heterocera of the order LEPIDOPTERA.Pupa: An inactive stage between the larval and adult stages in the life cycle of insects.Signal Transduction: The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.Deoxyglucose: 2-Deoxy-D-arabino-hexose. An antimetabolite of glucose with antiviral activity.Reverse Transcriptase Polymerase Chain Reaction: A variation of the PCR technique in which cDNA is made from RNA via reverse transcription. The resultant cDNA is then amplified using standard PCR protocols.Lipid Mobilization: LIPOLYSIS of stored LIPIDS in the ADIPOSE TISSUE to release FREE FATTY ACIDS. Mobilization of stored lipids is under the regulation of lipolytic signals (CATECHOLAMINES) or anti-lipolytic signals (INSULIN) via their actions on the hormone-sensitive LIPASE. This concept does not include lipid transport.Gene Expression: The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION.Thiazolidinediones: THIAZOLES with two keto oxygens. Members are insulin-sensitizing agents which overcome INSULIN RESISTANCE by activation of the peroxisome proliferator activated receptor gamma (PPAR-gamma).Receptors, Adrenergic, beta-3: A subclass of beta-adrenergic receptors (RECEPTORS, ADRENERGIC, BETA). The beta-3 adrenergic receptors are the predominant beta-adrenergic receptor type expressed in white and brown ADIPOCYTES and are involved in modulating ENERGY METABOLISM and THERMOGENESIS.Muscle Proteins: The protein constituents of muscle, the major ones being ACTINS and MYOSINS. More than a dozen accessory proteins exist including TROPONIN; TROPOMYOSIN; and DYSTROPHIN.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Biological Transport: The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. The transport can be across cell membranes and epithelial layers. It also can occur within intracellular compartments and extracellular compartments.Receptor, Insulin: A cell surface receptor for INSULIN. It comprises a tetramer of two alpha and two beta subunits which are derived from cleavage of a single precursor protein. The receptor contains an intrinsic TYROSINE KINASE domain that is located within the beta subunit. Activation of the receptor by INSULIN results in numerous metabolic changes including increased uptake of GLUCOSE into the liver, muscle, and ADIPOSE TISSUE.Drosophila: A genus of small, two-winged flies containing approximately 900 described species. These organisms are the most extensively studied of all genera from the standpoint of genetics and cytology.Liver: A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.Transcription Factors: Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.GATA Transcription Factors: A family of transcription factors that contain two ZINC FINGER MOTIFS and bind to the DNA sequence (A/T)GATA(A/G).Blood Glucose: Glucose in blood.Insulin Antagonists: Compounds which inhibit or antagonize the biosynthesis or action of insulin.Embolism, Fat: Blocking of a blood vessel by fat deposits in the circulation. It is often seen after fractures of large bones or after administration of CORTICOSTEROIDS.Metamorphosis, Biological: Profound physical changes during maturation of living organisms from the immature forms to the adult forms, such as from TADPOLES to frogs; caterpillars to BUTTERFLIES.Muscle, Skeletal: A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.Ecdysteroids: Steroids that bring about MOLTING or ecdysis in insects. Ecdysteroids include the endogenous insect hormones (ECDYSONE and ECDYSTERONE) and the insect-molting hormones found in plants, the phytoecdysteroids. Phytoecdysteroids are natural insecticides.Diet: Regular course of eating and drinking adopted by a person or animal.Organ Specificity: Characteristic restricted to a particular organ of the body, such as a cell type, metabolic response or expression of a particular protein or antigen.Hypoglycemic Agents: Substances which lower blood glucose levels.Dietary Fats, Unsaturated: Unsaturated fats or oils used in foods or as a food.Lipogenesis: De novo fat synthesis in the body. This includes the synthetic processes of FATTY ACIDS and subsequent TRIGLYCERIDES in the LIVER and the ADIPOSE TISSUE. Lipogenesis is regulated by numerous factors, including nutritional, hormonal, and genetic elements.Fats, Unsaturated: Fats containing one or more double bonds, as from oleic acid, an unsaturated fatty acid.Eating: The consumption of edible substances.3-O-Methylglucose: A non-metabolizable glucose analogue that is not phosphorylated by hexokinase. 3-O-Methylglucose is used as a marker to assess glucose transport by evaluating its uptake within various cells and organ systems. (J Neurochem 1993;60(4):1498-504)Resistin: A 12-kDa cysteine-rich polypeptide hormone secreted by FAT CELLS in the ADIPOSE TISSUE. It is the founding member of the resistin-like molecule (RELM) hormone family. Resistin suppresses the ability of INSULIN to stimulate cellular GLUCOSE uptake.Insulin Receptor Substrate Proteins: A structurally-related group of signaling proteins that are phosphorylated by the INSULIN RECEPTOR PROTEIN-TYROSINE KINASE. The proteins share in common an N-terminal PHOSPHOLIPID-binding domain, a phosphotyrosine-binding domain that interacts with the phosphorylated INSULIN RECEPTOR, and a C-terminal TYROSINE-rich domain. Upon tyrosine phosphorylation insulin receptor substrate proteins interact with specific SH2 DOMAIN-containing proteins that are involved in insulin receptor signaling.Rats, Zucker: Two populations of Zucker rats have been cited in research--the "fatty" or obese and the lean. The "fatty" rat (Rattus norvegicus) appeared as a spontaneous mutant. The obese condition appears to be due to a single recessive gene.Proteins: Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.Glucose Transporter Type 1: A ubiquitously expressed glucose transporter that is important for constitutive, basal GLUCOSE transport. It is predominately expressed in ENDOTHELIAL CELLS and ERYTHROCYTES at the BLOOD-BRAIN BARRIER and is responsible for GLUCOSE entry into the BRAIN.Lipoproteins: Lipid-protein complexes involved in the transportation and metabolism of lipids in the body. They are spherical particles consisting of a hydrophobic core of TRIGLYCERIDES and CHOLESTEROL ESTERS surrounded by a layer of hydrophilic free CHOLESTEROL; PHOSPHOLIPIDS; and APOLIPOPROTEINS. Lipoproteins are classified by their varying buoyant density and sizes.Inflammation: A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function.Isoproterenol: Isopropyl analog of EPINEPHRINE; beta-sympathomimetic that acts on the heart, bronchi, skeletal muscle, alimentary tract, etc. It is used mainly as bronchodilator and heart stimulant.Rats, Inbred Strains: Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.Ion Channels: Gated, ion-selective glycoproteins that traverse membranes. The stimulus for ION CHANNEL GATING can be due to a variety of stimuli such as LIGANDS, a TRANSMEMBRANE POTENTIAL DIFFERENCE, mechanical deformation or through INTRACELLULAR SIGNALING PEPTIDES AND PROTEINS.Gene Expression Regulation, Developmental: Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action during the developmental stages of an organism.Viscera: Any of the large interior organs in any one of the three great cavities of the body, especially in the abdomen.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Starvation: Lengthy and continuous deprivation of food. (Stedman, 25th ed)Fatty Acid Synthases: Enzymes that catalyze the synthesis of FATTY ACIDS from acetyl-CoA and malonyl-CoA derivatives.Phosphorylation: The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.Abdomen: That portion of the body that lies between the THORAX and the PELVIS.Mice, Knockout: Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.Adipocytes, Brown: Fat cells with dark coloration due to the densely packed MITOCHONDRIA. They contain numerous small lipid droplets or vacuoles. Their stored lipids can be converted directly to energy as heat by the mitochondria.Lipodystrophy: A collection of heterogenous conditions resulting from defective LIPID METABOLISM and characterized by ADIPOSE TISSUE atrophy. Often there is redistribution of body fat resulting in peripheral fat wasting and central adiposity. They include generalized, localized, congenital, and acquired lipodystrophy.Bees: Insect members of the superfamily Apoidea, found almost everywhere, particularly on flowers. About 3500 species occur in North America. They differ from most WASPS in that their young are fed honey and pollen rather than animal food.Energy Intake: Total number of calories taken in daily whether ingested or by parenteral routes.Kinetics: The rate dynamics in chemical or physical systems.Gene Expression Regulation, Enzymologic: Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in enzyme synthesis.Blotting, Western: Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.Cold Temperature: An absence of warmth or heat or a temperature notably below an accustomed norm.DNA, Complementary: Single-stranded complementary DNA synthesized from an RNA template by the action of RNA-dependent DNA polymerase. cDNA (i.e., complementary DNA, not circular DNA, not C-DNA) is used in a variety of molecular cloning experiments as well as serving as a specific hybridization probe.MethylglucosidesRats, Wistar: A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.Weight Gain: Increase in BODY WEIGHT over existing weight.Polydnaviridae: A family of insect viruses isolated from endoparasitic hymenopteran insects belonging to the families Ichneumonidae and Braconidae. The two genera are Ichnovirus and Bracovirus.Food Deprivation: The withholding of food in a structured experimental situation.Hormones, Ectopic: Hormones released from neoplasms or from other cells that are not the usual sources of hormones.Adrenergic beta-Agonists: Drugs that selectively bind to and activate beta-adrenergic receptors.Cloning, Molecular: The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells.Tissue Distribution: Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.CCAAT-Enhancer-Binding Protein-alpha: A CCAAT-enhancer-binding protein found in LIVER; ADIPOSE TISSUE; INTESTINES; LUNG; ADRENAL GLANDS; PLACENTA; OVARY and peripheral blood mononuclear cells (LEUKOCYTES, MONONUCLEAR). Experiments with knock-out mice have demonstrated that CCAAT-enhancer binding protein-alpha is essential for the functioning and differentiation of HEPATOCYTES and ADIPOCYTES.Glycerolphosphate DehydrogenaseReceptors, Cytoplasmic and Nuclear: Intracellular receptors that can be found in the cytoplasm or in the nucleus. They bind to extracellular signaling molecules that migrate through or are transported across the CELL MEMBRANE. Many members of this class of receptors occur in the cytoplasm and are transported to the CELL NUCLEUS upon ligand-binding where they signal via DNA-binding and transcription regulation. Also included in this category are receptors found on INTRACELLULAR MEMBRANES that act via mechanisms similar to CELL SURFACE RECEPTORS.Animals, Genetically Modified: ANIMALS whose GENOME has been altered by GENETIC ENGINEERING, or their offspring.RNA Interference: A gene silencing phenomenon whereby specific dsRNAs (RNA, DOUBLE-STRANDED) trigger the degradation of homologous mRNA (RNA, MESSENGER). The specific dsRNAs are processed into SMALL INTERFERING RNA (siRNA) which serves as a guide for cleavage of the homologous mRNA in the RNA-INDUCED SILENCING COMPLEX. DNA METHYLATION may also be triggered during this process.Molting: Periodic casting off FEATHERS; HAIR; or cuticle. Molting is a process of sloughing or desquamation, especially the shedding of an outer covering and the development of a new one. This phenomenon permits growth in ARTHROPODS, skin renewal in AMPHIBIANS and REPTILES, and the shedding of winter coats in BIRDS and MAMMALS.Panniculitis: General term for inflammation of adipose tissue, usually of the skin, characterized by reddened subcutaneous nodules.Body Mass Index: An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention)Methoprene: Juvenile hormone analog and insect growth regulator used to control insects by disrupting metamorphosis. Has been effective in controlling mosquito larvae.Rats, Sprague-Dawley: A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.DiglyceridesInsects: The class Insecta, in the phylum ARTHROPODA, whose members are characterized by division into three parts: head, thorax, and abdomen. They are the dominant group of animals on earth; several hundred thousand different kinds having been described. Three orders, HEMIPTERA; DIPTERA; and SIPHONAPTERA; are of medical interest in that they cause disease in humans and animals. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p1)Feeding Behavior: Behavioral responses or sequences associated with eating including modes of feeding, rhythmic patterns of eating, and time intervals.Gene Expression Profiling: The determination of the pattern of genes expressed at the level of GENETIC TRANSCRIPTION, under specific circumstances or in a specific cell.Phenylisopropyladenosine: N-Isopropyl-N-phenyl-adenosine. Antilipemic agent. Synonym: TH 162.Blotting, Northern: Detection of RNA that has been electrophoretically separated and immobilized by blotting on nitrocellulose or other type of paper or nylon membrane followed by hybridization with labeled NUCLEIC ACID PROBES.PhosphoproteinsCorpora Allata: Paired or fused ganglion-like bodies in the head of insects. The bodies secrete hormones important in the regulation of metamorphosis and the development of some adult tissues.Cell Membrane: The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.Subcutaneous Tissue: Loose connective tissue lying under the DERMIS, which binds SKIN loosely to subjacent tissues. It may contain a pad of ADIPOCYTES, which vary in number according to the area of the body and vary in size according to the nutritional state.Receptors, Adrenergic, beta: One of two major pharmacologically defined classes of adrenergic receptors. The beta adrenergic receptors play an important role in regulating CARDIAC MUSCLE contraction, SMOOTH MUSCLE relaxation, and GLYCOGENOLYSIS.Epinephrine: The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.Phosphatidylinositol 3-Kinases: Phosphotransferases that catalyzes the conversion of 1-phosphatidylinositol to 1-phosphatidylinositol 3-phosphate. Many members of this enzyme class are involved in RECEPTOR MEDIATED SIGNAL TRANSDUCTION and regulation of vesicular transport with the cell. Phosphatidylinositol 3-Kinases have been classified both according to their substrate specificity and their mode of action within the cell.Transcription, Genetic: The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.Fat Necrosis: A condition in which the death of adipose tissue results in neutral fats being split into fatty acids and glycerol.Cockroaches: Insects of the order Dictyoptera comprising several families including Blaberidae, BLATTELLIDAE, Blattidae (containing the American cockroach PERIPLANETA americana), Cryptocercidae, and Polyphagidae.Models, Biological: Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.Egg Proteins: Proteins which are found in eggs (OVA) from any species.Mesenchymal Stromal Cells: Bone-marrow-derived, non-hematopoietic cells that support HEMATOPOETIC STEM CELLS. They have also been isolated from other organs and tissues such as UMBILICAL CORD BLOOD, umbilical vein subendothelium, and WHARTON JELLY. These cells are considered to be a source of multipotent stem cells because they include subpopulations of mesenchymal stem cells.Glucose Tolerance Test: A test to determine the ability of an individual to maintain HOMEOSTASIS of BLOOD GLUCOSE. It includes measuring blood glucose levels in a fasting state, and at prescribed intervals before and after oral glucose intake (75 or 100 g) or intravenous infusion (0.5 g/kg).Organ Size: The measurement of an organ in volume, mass, or heaviness.Cell Line: Established cell cultures that have the potential to propagate indefinitely.Homeostasis: The processes whereby the internal environment of an organism tends to remain balanced and stable.Membrane Proteins: Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.Dietary Carbohydrates: Carbohydrates present in food comprising digestible sugars and starches and indigestible cellulose and other dietary fibers. The former are the major source of energy. The sugars are in beet and cane sugar, fruits, honey, sweet corn, corn syrup, milk and milk products, etc.; the starches are in cereal grains, legumes (FABACEAE), tubers, etc. (From Claudio & Lagua, Nutrition and Diet Therapy Dictionary, 3d ed, p32, p277)Lipectomy: Removal of localized SUBCUTANEOUS FAT deposits by SUCTION CURETTAGE or blunt CANNULATION in the cosmetic correction of OBESITY and other esthetic contour defects.1-Acylglycerol-3-Phosphate O-Acyltransferase: An enzyme that catalyzes the acyl group transfer of ACYL COA to 1-acyl-sn-glycerol 3-phosphate to generate 1,2-diacyl-sn-glycerol 3-phosphate. This enzyme has alpha, beta, gamma, delta and epsilon subunits.DNA Primers: Short sequences (generally about 10 base pairs) of DNA that are complementary to sequences of messenger RNA and allow reverse transcriptases to start copying the adjacent sequences of mRNA. Primers are used extensively in genetic and molecular biology techniques.11-beta-Hydroxysteroid Dehydrogenase Type 1: A low-affinity 11 beta-hydroxysteroid dehydrogenase found in a variety of tissues, most notably in LIVER; LUNG; ADIPOSE TISSUE; vascular tissue; OVARY; and the CENTRAL NERVOUS SYSTEM. The enzyme acts reversibly and can use either NAD or NADP as cofactors.Tumor Necrosis Factor-alpha: Serum glycoprotein produced by activated MACROPHAGES and other mammalian MONONUCLEAR LEUKOCYTES. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to TNF-beta (LYMPHOTOXIN), but they share TNF RECEPTORS.Fatty Acid-Binding Proteins: Intracellular proteins that reversibly bind hydrophobic ligands including: saturated and unsaturated FATTY ACIDS; EICOSANOIDS; and RETINOIDS. They are considered a highly conserved and ubiquitously expressed family of proteins that may play a role in the metabolism of LIPIDS.Body Temperature Regulation: The processes of heating and cooling that an organism uses to control its temperature.DioxolesCatechol Oxidase: An enzyme of the oxidoreductase class that catalyzes the reaction between catechol and oxygen to yield benzoquinone and water. It is a complex of copper-containing proteins that acts also on a variety of substituted catechols. EC 1.10.3.1.Swine: Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).Oviparity: The capability of producing eggs (OVA) from which young are hatched outside the body. While mostly referring to nonmammalian species, this does include MAMMALS of the order MONOTREMATA.Fatty Liver: Lipid infiltration of the hepatic parenchymal cells resulting in a yellow-colored liver. The abnormal lipid accumulation is usually in the form of TRIGLYCERIDES, either as a single large droplet or multiple small droplets. Fatty liver is caused by an imbalance in the metabolism of FATTY ACIDS.Cystinyl Aminopeptidase: A zinc-containing sialoglycoprotein that is used to study aminopeptidase activity in the pathogenesis of hypertension. EC 3.4.11.3.Norepinephrine: Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.Thinness: A state of insufficient flesh on the body usually defined as having a body weight less than skeletal and physical standards. Depending on age, sex, and genetic background, a BODY MASS INDEX of less than 18.5 is considered as underweight.DNA-Binding Proteins: Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases.Buttocks: Either of two fleshy protuberances at the lower posterior section of the trunk or HIP in humans and primate on which a person or animal sits, consisting of gluteal MUSCLES and fat.Acetyl-CoA Carboxylase: A carboxylating enzyme that catalyzes the conversion of ATP, acetyl-CoA, and HCO3- to ADP, orthophosphate, and malonyl-CoA. It is a biotinyl-protein that also catalyzes transcarboxylation. The plant enzyme also carboxylates propanoyl-CoA and butanoyl-CoA (From Enzyme Nomenclature, 1992) EC 6.4.1.2.Diabetes Mellitus, Type 2: A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.1-Methyl-3-isobutylxanthine: A potent cyclic nucleotide phosphodiesterase inhibitor; due to this action, the compound increases cyclic AMP and cyclic GMP in tissue and thereby activates CYCLIC NUCLEOTIDE-REGULATED PROTEIN KINASESSterol Regulatory Element Binding Protein 1: A sterol regulatory element binding protein that regulates expression of GENES involved in FATTY ACIDS metabolism and LIPOGENESIS. Two major isoforms of the protein exist due to ALTERNATIVE SPLICING.Enzyme Activation: Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme.Receptors, Leptin: Cell surface receptors for obesity factor (LEPTIN), a hormone secreted by the WHITE ADIPOCYTES. Upon leptin-receptor interaction, the signal is mediated through the JAK2/STAT3 pathway to regulate food intake, energy balance and fat storage.Aging: The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.Cell Size: The quantity of volume or surface area of CELLS.Sequence Homology, Amino Acid: The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
The main cell types are fibroblasts, macrophages and adipocytes (subcutaneous tissue contains 50% of body fat). Fat serves as ... It consists of loose connective tissue, adipose tissue and elastin. ... This protects the body from external particles such as toxins by not allowing them to come into contact with internal tissues. ... The skin is the largest organ in the human body. For the average adult human, the skin has a surface area of between 1.5-2.0 ...
... and other ingredients into subcutaneous fat. Mesotherapy injections allegedly target adipose fat cells, apparently by inducing ... The FDA cannot control the use of practitioners injecting various mixtures into patient's bodies because this practice falls ... lipolysis, rupture and cell death among adipocytes. There are published studies on the clinical treatments and effects of these ... There is no conclusive research proof that these chemical compounds work to target adipose (fat cells) specifically. Cell lysis ...
Perilipin is a protein that coats lipid droplets in adipocytes, the fat-storing cells in adipose tissue. Perilipin acts as a ... in fat bodies. The yeast Saccharomyces cerevisiae expresses PLN1 (formerly PET10), that stabilizes lipid droplets and aids in ... Phosphorylation of perilipin is essential for the mobilization of fats in adipose tissue. ... "Relationship between perilipin gene polymorphisms and body weight and body composition during weight loss and weight ...
The body attacks fat like it does bacteria and fungi. When expanded fat cells leak or break open, macrophages mobilize to clean ... adipocyte lipolysis and formation of multinucleate giant cells. The fat-derived protein called angiopoietin-like protein 2 ( ... Loss of white adipose tissue reduces levels of inflammation markers. The association of systemic inflammation with insulin ... Higher than normal Angptl2 level in fat tissues develop inflammation as well as insulin and leptin resistance. Stored fat ...
Adipocytes generate TNF-α and other interleukins. Cytokines derived from adipose tissue serve as remote regulators such as ... Obesity leaves an excess of nutrients for the body, thereby causing adipocytes to release more proinflammatory cytokines. ... Classically activated macrophages in the visceral fat accumulate in the fat tissues and continuously release proinflammatory ... Therapeutic effects of acupuncture may be related to the body's ability to suppress a range of proinflammatory cytokines such ...
... and cholesterol in the blood between all the tissues of the body. The most common being the liver and the adipocytes of adipose ... Chylomicrons carry triglycerides (fat) from the intestines to the liver, to skeletal muscle, and to adipose tissue. Very-low- ... While adipocytes are the main storage cells for triacylglycerols, they do not produce any lipoproteins. Bile emulsifies fats ... collect fat molecules (phospholipids, cholesterol, triglycerides, etc.) from the body's cells/tissues, and take it back to the ...
... the adipose tissue cells that are responsible for storing fat. Perilipin acts as a protective coating from the body's natural ... and brown adipose tissue. PLIN4 coats lipid droplets in adipocytes to protect them from lipases. The PLIN4 gene may be ... "Relationship between perilipin gene polymorphisms and body weight and body composition during weight loss and weight ... Perilipin-null mice eat more food than wild-type mice, but gain 1/3 less fat than wild-type mice on the same diet; perilipin- ...
... facilitates the entry of glucose into adipocytes and inhibits breakdown of fat in adipocytes. On the other hand, adipose tissue ... Adiponectins are cytokines that are inversely related to percent body fat; that is people with a low body fat will have higher ... In this study, mice with reduced insulin levels expended more energy and had fat cells that were reprogrammed to burn some ... concentrations of adiponectins where as people with high body fat will have lower concentrations of adiponectins. Weyer "et al ...
... fatty acids are stored in fat cells (adipocytes). The breakdown of this fat is known as lipolysis. The products of lipolysis, ... It includes three major steps: Lipolysis of and release from adipose tissue Activation and transport into mitochondria β- ... free fatty acids, are released into the bloodstream and circulate throughout the body. During the breakdown of triacylglycerols ...
A high (?adipose) tissue LPL response to a high-carbohydrate diet may predispose toward fat gain. One study reported that ... they responded with an increase in adipose tissue LPL activity per adipocyte, or a decrease in skeletal muscle LPL activity per ... subjects gained more body fat over the next four years if, after following a high-carbohydrate diet and partaking of a high- ... there was a significantly greater rise in adipose tissue LPL in response to the high-carbohydrate diet compared to the high-fat ...
... body fat, or simply fat is a loose connective tissue composed mostly of adipocytes.[1] In addition to adipocytes, adipose ... Brown fat[edit]. Main article: Brown adipose tissue. Brown fat or brown adipose tissue (BAT) is a specialized form of adipose ... Body fat meter[edit]. See also: Bioelectrical impedance analysis. A body fat meter is a widely available tool used to measure ... Marrow fat[edit]. Marrow fat, also known as marrow adipose tissue (MAT), is a poorly understood adipose depot that resides in ...
... or fatty tissue is the body's means of storing metabolic energy over extended periods of time. Adipocytes (fat cells) store fat ... These metabolic activities are regulated by several hormones (e.g., insulin, glucagon and epinephrine). Adipose tissue also ... Other lipids needed by the body can be synthesized from these and other fats. Fats and other lipids are broken down in the body ... Fats serve both as energy sources for the body, and as stores for energy in excess of what the body needs immediately. Each ...
Adipose tissue cells store the triglycerides in their fat droplets, ultimately to release them again as free fatty acids and ... known as ketone bodies (as they are not "bodies" at all, but water-soluble chemical substances). The ketone bodies are released ... in the fat droplet of the adipocyte. The liver absorbs a proportion of the glucose from the blood in the portal vein coming ... Fatty acids are released, between meals, from the fat depots in adipose tissue, where they are stored as triglycerides, as ...
... body fat, or simply fat is a loose connective tissue composed mostly of adipocytes. In addition to adipocytes, adipose tissue ... A body fat meter is a widely available tool used to measure the percentage of fat in the human body. Different meters use ... They tend to under-read body fat percentage. In contrast with clinical tools, one relatively inexpensive type of body fat meter ... which generates body heat. The formation of adipose tissue appears to be controlled in part by the adipose gene. Adipose tissue ...
Normally, adipose tissues contain adipocytes to store fat for energy during fasting period and release leptin to regulate ... Subcutaneous fat loss in AGL patients are visible in all parts of the body. AGL mostly affects face and the extremities and may ... In AGL patients, adipose tissues are insufficient and leads to fat deposition in non-adipose tissues, such as muscle or liver, ... Thus, as the name suggests, AGL is a near-total deficiency of adipose tissues in the body that is developed later in life. It ...
Adipose tissue, commonly known as fat, is a depository for energy in order to conserve metabolic homeostasis. As the body takes ... In addition, mutations in GLUT4 genes in adipocytes can also lead to increased GLUT4 expression in adipose cells, which allows ... or fat. An imbalance in glucose intake and energy expenditure has been shown to lead to both adipose cell hypertrophy and ... "Adipose cell hyperplasia and enhanced glucose disposal in transgenic mice overexpressing GLUT4 selectively in adipose tissue". ...
Brown fat cells come from the middle embryo layer, mesoderm, also the source of myocytes (muscle cells), adipocytes, and ... In neonates (newborn infants), brown fat makes up about 5% of the body mass and is located on the back, along the upper half of ... Brown adipose tissue (BAT) or brown fat makes up the adipose organ together with white adipose tissue (or white fat). Brown ... These adipocytes are found interspersed in white adipose tissue and are also named 'beige' or 'brite'. Brown adipose tissue is ...
While leptin is associated with body fat mass, however, the size of individual fat cells, and the act of overeating, it is ... Leptin is produced primarily in the adipocytes of white adipose tissue. It also is produced by brown adipose tissue, placenta ( ... The result is that a person who has lost weight below their natural body fat set-point has a lower basal metabolic rate than an ... Predominantly, the "energy expenditure hormone" leptin is made by adipose cells, thus it is labeled fat cell-specific. In the ...
The main function of hormone-sensitive lipase is to mobilize the stored fats. Mobilization and Cellular Uptake of Stored Fats ( ... Another enzyme found in adipose tissue, Adipose Triglyceride Lipase (ATGL), has a higher affinity for triglycerides than HSL, ... HSL is activated when the body needs to mobilize energy stores, and so responds positively to catecholamines, ACTH. It is ... During fasting-state the increased free fatty acid secretion by adipocyte cells was attributed to the hormone epinephrine, ...
... www.uofmhealth.org/news/archive/201407/bone-marrow-fat-tissue-secretes-hormone-helps-body-stay - Bone marrow fat tissue ... MAT, by its "specific marrow location, and its adipocyte origin from at least LepR+ marrow MSC is separated from non-bone fat ... approximates that of white adipose tissue (WAT). MAT has qualities of both white and brown fat. Subcutaneous white fat contain ... Flow cytometric quantification can be used to purify adipocytes from the stromal vascular fraction of most fat depots. Early ...
In Biology, adipose tissue (/ˈædəˌpoʊs/) or body fat or fat depot or just fat is loose connective tissue composed of adipocytes ... and brown adipose tissue (BAT). The formation of adipose tissue appears to be controlled in part by the adipose gene. Adipose ... While fat cells suctioned via liposuction are permanently gone, after a few months overall body fat generally returned to the ... Obesity or being overweight in humans and most animals does not depend on body weight but on the amount of body fat-to be ...
... s in murine microglia Oil bodies in Nardia scalaris, a leafy liverwort Oil body Adipocyte Lipolysis Seipin Martin ... Initially, these lipid droplets were considered to merely serve as fat depots, but since the discovery in the 1990s of proteins ... lipid-rich cellular organelles that regulate the storage and hydrolysis of neutral lipids and are found largely in the adipose ... In adipocytes, lipid bodies tend to be larger and they may compose the majority of the cell, while in other cells they may only ...
CMKLR1 is predominantly expressed in immune cells as well as adipose tissue. Because of its role in adipocyte differentiation ... Studies in mice found that feeding mice a high-fat diet, resulted in increased expression of both chemerin and CMKLR1. In ... Moreover, chemerin levels show a significant correlation with body mass index, plasma triglyceride levels and blood pressure. ... suggesting chemerin plays a role in metabolic function of mature adipocytes. Studies using mature human adipocytes, 3T3-L1 ...
AdPLA deficiency was shown to reduce adipose tissue mass for mice in both standard and high fat diets. Adipocyte hypotrophy was ... AdPLA is expressed predominantly in adipose tissue at higher levels than in the rest of the body, more so in white adipose ... while adipocyte differentiation did not play a role in reduced adipose tissue despite the effects of prostaglandins on ... Body composition also showed a higher percentage of water and lean tissue mass compared to non-AdPLA deficient obese mice. ...
"Overexpression of adiponectin targeted to adipose tissue in transgenic mice: impaired adipocyte differentiation". Endocrinology ... negative regulation of fat cell differentiation. • response to linoleic acid. • detection of oxidative stress. • glucose ... Many studies have found adiponectin to be inversely correlated with body mass index in patient populations.[9] However, a meta ... "cDNA cloning and expression of a novel adipose specific collagen-like factor, apM1 (AdiPose Most abundant Gene transcript 1)". ...
Examples of non-fibrous CT include adipose tissue and blood. Adipose tissue gives "mechanical cushioning" to the body, among ... groups of adipose cells are kept together by collagen fibers and collagen sheets in order to keep fat tissue under compression ... The cells of connective tissue include fibroblasts, adipocytes, macrophages, mast cells and leucocytes. ... Special connective tissue consists of reticular connective tissue, adipose tissue, cartilage, bone, and blood.[8] Other kinds ...
... induced emergence of brown-like adipocytes in white adipose tissue (WAT) of the spontaneously hypertensive rat (SHR). We ... In this study, we present evidence for high-fat diet (HFD)- ... Brain and Body Centre, University of Nottingham, Nottingham, UK ... In this study, we present evidence for high-fat diet (HFD)-induced emergence of brown-like adipocytes in white adipose tissue ( ... 2355798 - Effects of nicotine on body weight, food consumption and body composition in male rats.. 19640228 - Plasticity in the ...
... the role of the HIF pathway in adipose tissue-associated diseases with a focus on the newly identified role of adipocyte HIF-2 ... the role of the HIF pathway in adipose tissue-associated diseases with a focus on the newly identified role of adipocyte HIF-2 ... obesity models to demonstrate an important role of hypoxia-induced signaling in adipose tissue and its impact on adipose ... obesity models to demonstrate an important role of hypoxia-induced signaling in adipose tissue and its impact on adipose ...
Our adipose tissue is made of fat cells adipocytes. ... about 85 % of the total energy available in the body. ... - A free ... The body fat is our major source of stored energy. ... The body fat is our major source of stored energy.*Our adipose ... The body fat is our major source of stored energy. Our adipose tissue is made of fat cells adipocytes. ... about 85 % of the ... adipocytes. *A typical 70 kg (150 lb) person has about 135,000 kcal of energy stored as fat, 24,000 kcal as protein, 720 kcal ...
... tissue that functions as the major storage site for fat in the form of triglycerides.There are two different types of adipose ... Very little synthesis of free fatty acids occurs in the cells of adipose tissue ( adipocytes ). Triglycerides are the most ... Lipogenesis is the deposition of fat or accumulation of body fat. This process occurs in adipose tissue and in the liver . ... The process of body fat accumulation Adipose tissue is specialized connective tissue that functions as the major storage site ...
This protein is found in cells and tissues throughout the body. Learn about this gene and related health conditions. ... which are cells that store fats for energy. Adipocytes make up most of the bodys fatty (adipose) tissue. ... A shortage of adipose tissue leads to multiple health problems, including high levels of fats called triglycerides circulating ... However, it is unknown specifically how the absence of cavin-1 leads to a loss of body fat and the other health problems ...
This protein appears to have diverse functions in cells and tissues throughout the body.Caveolin-1 is the major component of ... which are cells that store fats for energy. Adipocytes make up most of the bodys fatty (adipose) tissue. In these cells, ... which would prevent fats from being stored normally in adipose tissue. A lack of body fat underlies many of the signs and ... The signs and symptoms of this condition include an overall loss of body fat except in the buttocks and on the palms of the ...
... body fat or thigh fat predicted insulin resistance in African-American women. Fasting TG (p = 0.046), HDL-cholesterol (p = ... Net TG synthesis and DNL in adipose cells were significantly lower in IR as compared with IS subjects, whereas adipocyte ... visceral fat and intrahepatic fat, and higher high-density lipoprotein (HDL)-cholesterol. Visceral fat has not been evaluated ... Adipose Cell Size and Regional Fat Deposition as Predictors of Metabolic Response to Overfeeding in Insulin-Resistant and ...
Adipose tissue. Body fat. Tissue comprising mainly cells containing triglyceride (adipocytes). It acts as an energy reserve, ... can be measured indirectly in a variety of ways including body mass index (see body mass index) and percentage body fat. ... Adipocytes. Cells of adipose tissue, where fats (triglycerides) are stored.. Adipokines. Cytokines (cell signalling proteins) ... Body composition. The composition of the body in terms of the relative proportions of water and adipose and lean tissue. Can ...
A new research report published in the March 2016 issue of The FASEB Journal shows that at least some human fat cells are ... a new weight control method is in the works and it involves manipulating the production of fat cells at their source. ... De novo generation of adipocytes from circulating progenitor cells in mouse and human adipose tissue. FASEB J. March 2016 30: ... "Our study suggests that it may be the type of fat-storing cells produced in our bodies that determines risk for disease, rather ...
D) Variability in the rate of accumulation of body weight is illustrated for a cohort of 6 mice fed a high-fat diet (left side ... Noninvasive MRI has been used to describe adipocyte depots for many years; the MRI technique we describe uses an advanced fat- ... The relative fat signal from interscapular brown adipose tissue (iBAT) depots (normalized to fat signal from perigonadal WAT) ... Dermal white adipose tissue (dWAT) was recently recognized for its potential to modify whole body metabolism. Here, we show ...
Culturing of Primary Adipocytes. Abdominal white adipose tissue was obtained from 4- to 5-week-old, wild-type mice. After blood ... Epididymal fat was significantly decreased as percent body weight in mice that received 200 mg/kg SA supplementation (Table 1 ... calories in fat). High-fat diets contained 18.8% crude protein, 16.2% crude fat, 45.2% nitrogen-free extract, and 3.98% crude ... Squalene has already been demonstrated to be able to elevate the body weight and serum cholesterol in high-fat fed hamsters due ...
Adipocytes are some of the largest cells in the human body. Adipose connective tissue forms a thick layer under the skin in ... Fat not used in metabolic processes is channelled towards adipocytes by way of small capillaries. Each adipocyte is occupied by ... certain body areas and it functions as an insulating layer and as a reserve energy source. Magnification: x800 when shortest ... Adipose connective tissue composed mainly of adipocytes (fat cells), coloured scanning electron micrograph (SEM). ...
While beta1AR and beta2AR are broadly expressed throughout tissues of the body, beta3AR is found predominantly in adipocytes. ... Stimulation of the betaARs leads to lipolysis in white adipocytes and nonshivering thermogenesis in brown fat. However, in ... The beta-adrenergic receptors and the control of adipose tissue metabolism and thermogenesis.. Collins S1, Surwit RS. ... This chapter will review the current understanding of the role of the sympathetic nervous system and the adipocyte betaARs in ...
Speakers described state-of-the-art technology for monitoring human brown adipose tissue (hBAT) mass and function, and ... Brown Adipose Tissue Improves Glucose Metabolism and Whole Body Insulin Sensitivity in Humans. Maria Chondronikola, University ... Targeting Lipolysis to Fuel Adipocyte Thermogenesis. James Granneman, Wayne State University. 2:15 p.m.. Insights From ... Human Epicardial Fat is a Unique Adipose Depot with Limited Brown Fat Signature that is Altered in Coronary Artery Disease. ...
Adipose tissue-specific deletion of 12/15-lipoxygenase protects mice from the consequences of a high-fat diet. Mediators ... Association of serum ferritin and indices of body fat distribution and obesity in Mexican American men - the Third National ... Isolation of primary adipocytes. Fat pads (s.c. and epididymal) were removed from C57BL/6 male mice and incubated in HBSS with ... Adipose tissue is a tissue with high heterogeneity. The pattern of fat distribution, truncal as compared with peripheral, has a ...
Body weight, fat accumulation, and serum biochemical parameters were used to evaluate obesity. The morphology of hepatocytes ... At the same time, EAOTs clearly alleviated fatty liver and reduced the size of adipocytes in the epididymal fat, especially in ... EAOTs decreased HFD-induced body weight, fat accumulation, serum levels of triglyceride, total cholesterol, and low-density ... In this study, five groups of mice (n = 9/group) were used including a normal diet with vehicle treatment, and a high-fat diet ...
... adipose tissue mass expands and adipocyte (fat cell) size increases. Collectively, adipocytes constitute the bodys largest ... Message Body. (Your Name) thought you would like to see this page from the Science web site. ... between two factors released by mammalian fat cells controls the degree of inflammation and insulin sensitivity in adipose ... between two factors released by mammalian fat cells controls the degree of inflammation and insulin sensitivity in adipose ...
... the loss of fat, and other abnormalities of adipose tissue. Generalized lipoatrophy, also known as Lawrence-Seip syndrome, is a ... rare group of syndromes, either acquired or congenital, characterized by a near-complete absence of fat. ... Adipocytes communicate body fat levels to the neuroendocrine system to control food intake and energy expenditure. Leptin has ... Transverse sections of the midthigh demonstrate an absence of subcutaneous fat, deep fat, intrafascicular fat, and marrow fat ( ...
The main cell types are fibroblasts, macrophages and adipocytes (subcutaneous tissue contains 50% of body fat). Fat serves as ... It consists of loose connective tissue, adipose tissue and elastin. ... This protects the body from external particles such as toxins by not allowing them to come into contact with internal tissues. ... The skin is the largest organ in the human body. For the average adult human, the skin has a surface area of between 1.5-2.0 ...
ac = adipocyte, fb = fat body; FSC = forward scatter, lp = lamellipodia, Lym = lymphocytes, nc = nucleus, ov, ovary; phag− = ... ACP- and peroxidase (POD)-positive cells in the fat body (top). Scale bar, 50 μm. TEM image of the fat body (bottom left). ... and gpr147-KO fat body (n = 5). (C) ACP+ cells (arrowhead) in fat body of WT and gpr147-KO adult frog. Scale bar, 50 μm. (D) ... ac = adipocyte, fb = fat body, FSC = forward scatter, st = stroma, ov = ovary. ...
... and how it protects the body from injury and regulates temperature. ... fat tissue), which is made up of adipocytes, or fat cells. The amount of adipose tissue varies throughout the body. It is ... Adipocytes can swell or shrink depending on whether the fat is being stored or used. The hormone leptin is secreted by fat ... The epidermis adipose tissue acts as an energy reserve. Once the body uses up energy thats acquired from consuming ...
Leptin is produced primarily from adipocytes according to adipose tissues quantity in the body. Brown fat tissue, stomach, ... Adipose tissue is the largest endocrine organ in the human body; it serves considerable role in the energy homeostasis and ... Injections of leptin into rat ventromedial hypothalamus increase adipocyte apoptosis in peripheral fat and in bone marrow. Cell ... The BMSCs can be discriminated mainly into adipocytes or osteoblast cell family. These adipocytes in bone marrow provide leptin ...
... body fat quintile, adipose cell size increased by only 7%, whereas adipose cell number increased by 74%. Recruitment of adipose ... but lower body fat). In human adipocyte models, knockdown of FAM13A in preadipocytes accelerates adipocyte differentiation. In ... and a greater proportion of small-to-large adipose cells. Diameter of the large adipose cells was associated with % body fat (r ... FAM13A affects body fat distribution and adipocyte function. Nature communications Fathzadeh, M., Li, J., Rao, A., Cook, N., ...
... the percentage of body fat was determined by EchoMRI. Adipocyte area and adipose tissue macrophage content were quantified ... The percentage body fat was calculated as ([body fat mass]/[body fat mass + lean mass]) × 100. ... The insulin-supplemented β-DKO mice had 13.4 ± 2.3% body fat at 16 weeks of age compared with 18.0 ± 2.1% body fat for the PBS- ... The increased percentage of body fat in the β-DKO mice was caused by adipocyte hypertrophy, with an average adipocyte area in ...
... the initial values for body weight and the fat mass, is the initial number of adipocytes, is the initial volume of the tissue, ... defined below, we generate new adipocytes at a rate of one cell/time step per microliter of adipose tissue volume:. ... the volume variation of each single adipocyte is described as follows:. where is a Gaussian noise with zero mean and variance ... body weight BW, and height H as follows:. where the parameters depend on the gender and are, respectively, kg, kg/years, kg/m, ...
Including adipose tissueTissuesSignaling in adipose tissueTriglyceridesObesityLipidMiceFattySecreted by adipose tissueLeptinMacrophagesDifferentiationMetabolicSubcutaneous fatSkeletalGlucoseInflammationDepotsHuman adipose tissueLipolysisGeneFibroblastsTriglycerideHumansLipidsAccumulationRegulatesEndocrine organLiverSize of adipocytesCytokinesGenesInsulin sensitivity in adipose tissueDepositionAmount of adipose tissueProteinRegulationMitochondrialWhite adiposeDecreasesConnective tissue composedLoss and adipose tissueHomeostasisAbdominalOccurs in adipose tissueBody'sBrown and white adipocytesFormation of adipose tissueEstablished that adipose tissueOrgansAdiponectinCells of adiposeThermogenicFunctionsVisceral fatBeigePreadipocytes
- However, because ABCA1 deletion in isolation leads to a compensatory elevation in ABCG1 expression ( 29 ) and ABCG1 knockout mice have very low adipose tissue mass and do not become glucose intolerant or insulin resistant when challenged with a high-fat diet ( 30 ), these studies have not provided insights into how β-cell dysfunction caused by perturbations in cholesterol homeostasis affects insulin target tissues, including adipose tissue and skeletal muscle. (diabetesjournals.org)
- Lipoproteins form and transport triacylglycerols to the cells of the heart, muscle, and adipose tissues. (powershow.com)
- There are two different types of adipose tissues. (ayurhelp.com)
- The free fatty acids are taken up by cells of adipose tissues and stored again as triglycerides through a complex process. (ayurhelp.com)
- This protein is found in cells and tissues throughout the body. (medlineplus.gov)
- This protein appears to have diverse functions in cells and tissues throughout the body. (medlineplus.gov)
- Thermogenic profiling using magnetic resonance imaging of dermal and other adipose tissues. (nih.gov)
- the MRI technique we describe uses an advanced fat-specific method to measure the thickness of dWAT, together with the total volume of WAT and the relative activation/fat depletion of brown adipose tissues (BAT). (nih.gov)
- Since skin-embedded adipocytes may provide natural insulation, they provide an important counterpoint to the activation of thermogenic brown and beige adipose tissues, whereby these distinct depots are functionally interrelated and require simultaneous assay. (nih.gov)
- While beta1AR and beta2AR are broadly expressed throughout tissues of the body, beta3AR is found predominantly in adipocytes. (nih.gov)
- This study establishes that low plasma insulin levels have a detrimental effect on two major insulin target tissues: adipose tissue and skeletal muscle. (diabetesjournals.org)
- C) Relative transcription of the Mϕ precursor marker, lurp, in SCs of the adult fat bodies and in various hematopoietic tissues (n = 6). (xenbase.org)
- It's made up of fat and connective tissues that house larger blood vessels and nerves, and it acts as an insulator to help regulate body temperature. (verywellhealth.com)
- To understand the molecular mechanism for this fat reduction, cDNA microarray, real-time PCR, two-dimensional electrophoresis and mass spectra were used to study the differential gene expression profiles of pig adipose tissues treated with/without clenbuterol. (biomedcentral.com)
- Insulin resistance is a pathological state in which insulin action is impaired in target tissues including liver, skeletal muscle, and adipose tissue. (pnas.org)
- After all, levels of free fatty acids in the bloodstream are higher in obese than in non-obese people, and free fatty acids can induce insulin resistance in tissues other than adipose tissue 3 . (nature.com)
- Figure 1: Obesity causes certain tissues in the body (such as muscle and liver) to be less sensitive to insulin. (nature.com)
- Resistin causes insulin resistance through its effects on adipocytes and perhaps other tissues. (nature.com)
- In mammals, three types of adipose tissues exist. (news-medical.net)
- Adipocytes store lipids to meet the fuel requirements of non-adipose tissues during fasting. (centerwatch.com)
- In patients with generalized lipodystrophy, the deficiency of adipose tissue leads to hypertriglyceridemia and ectopic deposition of fat in non-adipose tissues such as liver and muscle, contributing to metabolic abnormalities including insulin resistance. (centerwatch.com)
- Ng SF, Lin RC, Maloney CA, Youngson NA, Owens JA, Morris MJ (2014) Paternal high-fat diet consumption induces common changes in the transcriptomes of retroperitoneal adipose and pancreatic islet tissues in female rat offspring. (springer.com)
- We have previously described specific changes of transcriptomic differences with respect to adipose tissues from the representative KS and TS breeds and identified a list of candidate genes underlying the phenotypic differences of fat/ thin tails in sheep . (thefreelibrary.com)
- Each of these fat tissues comprise of two types of fat cell. (pregnancyandlowbackpain.com)
- Fat cells - known technically as adipocytes - commonly cluster together in their millions (or billions) to form the body's adipose tissues. (lesmills.com)
- The abnormal development of adipose tissues caused by mutations in the lipin 1 gene results in lipodystrophy, a condition associated with low body fat, fatty liver, hypertriglyceridemia, and insulin resistance (1). (cellsignal.com)
- Lipin 1 plays a role in lipid metabolism in various tissues and cell types including liver, muscle, adipose tissues, and neuronal cell lines (2-4). (cellsignal.com)
- FA overflow from adipocytes to skeletal muscle and other tissues may result in free radical formation during oxidative phosphorylation, the intramyocellular accumulation of triglyceride, and the production of toxic lipid metabolites (fatty-acyl CoAs, diacylglycerol, and ceramides) and metabolic intermediates, which reflect oxidative damage ( 4 ), both of which can interfere with the insulin signaling cascade. (diabetesjournals.org)
- Adipose tissue is the largest endocrine organ in the body and generates multiple signals that regulate metabolism in other tissues. (diabetesjournals.org)
- To investigate the effects of Bscl2 on mature adipocyte maintenance, mouse models were generated to knockout Bscl2 specifically in adipose tissues after the mice reached adulthood, thus avoiding complicating factors that would arise in global knockouts during infancy. (asbmb.org)
- Importantly, body WAT mass decreased sharply, and browning was noted in the remaining tissues. (asbmb.org)
- Based on these findings, Bscl2 and ADRB3 have a complex relationship in maintaining whole-body homeostasis, but Bscl2 has a definitive role in lipolysis and browning of WAT in adult tissues. (asbmb.org)
- It supports and binds other tissues in the body. (thoughtco.com)
- There is recent evidence that differentiation between upper-body and lower-body adipose tissues might be under control of site-specific sets of developmental genes, such as Homebox (HOX) genes, a group of related genes that control the body plan of an embryo along the anterior-posterior axis. (biomedcentral.com)
- This organ is made up of several depots located in two main compartments of the body: subcutaneous adipose tissue (SAT) and visceral adipose tissues (VAT). (biomedcentral.com)
- Most is stored as fat in adipocytes , but when these eventually fill up, excess lipid spills over into other tissues … - Phyllida Brown Leptin is an adipocyte -derived circulating hormone that provides information to the brain about energy stores. (merriam-webster.com)
- Mesenchymal stem cells (MSCs), after their initial discovery in bone marrow, have been isolated and characterized from several adult and fetal tissues, including adipose (fat), dermis (skin), synovial fluid, periosteum, umbilical cord blood, placenta and amniotic fluid. (bio-medicine.org)
- MSCs are partially defined by their ability to differentiate into tissues including osteoblasts (bone cells), chondrocytes (cartilage cells), myocytes (muscle cells), and adipocytes (fat cells). (bio-medicine.org)
- Extensive work has been done using various diet-induced obesity models to demonstrate an important role of hypoxia-induced signaling in adipose tissue and its impact on adipose functions related to adipogenesis, insulin sensitivity, and inflammation. (frontiersin.org)
- Adipose tissue is specialized connective tissue that functions as the major storage site for fat in the form of triglycerides. (ayurhelp.com)
- The carbohydrates can be stored as glycogen in the liver and muscle and can also be converted to triglycerides in the liver and transferred to adipose tissue for storage. (ayurhelp.com)
- A shortage of adipose tissue leads to multiple health problems, including high levels of fats called triglycerides circulating in the bloodstream (hypertriglyceridemia) and diabetes mellitus. (medlineplus.gov)
- Cells of adipose tissue, where fats (triglycerides) are stored. (wcrf.org)
- Each adipocyte is occupied by a single lipid droplet primarily formed by triglycerides. (sciencephoto.com)
- Obesity is characterized by the increased storage of triglycerides (fat molecules) in adipose tissue and causes insulin resistance. (nature.com)
- Free fatty acid is "liberated" from lipoproteins by lipoprotein lipase (LPL) and enters the adipocyte, where it is reassembled into triglycerides by esterifying it onto glycerol . (bionity.com)
- A. muciniphila administration lowers body weight and plasma total cholesterol and triglycerides levels. (wur.nl)
- Until now, hormone-sensitive lipase (HSL) was the only enzyme known to hydrolyze triglycerides in mammalian adipose tissue. (sciencemag.org)
- Thus, ATGL and HSL coordinately catabolize stored triglycerides in adipose tissue of mammals. (sciencemag.org)
- However, its main function is to be a reserve of lipids, which can be oxidised to meet the energy needs of the body and to protect it from excess glucose by storing triglycerides produced by the liver from sugars, although some evidence suggests that most lipid synthesis from carbohydrates occurs in the adipose tissue itself. (wikipedia.org)
- A cell that synthesizes and stores neutral fats (triacylglycerols or TRIGLYCERIDES ). (thefreedictionary.com)
- These cells store fat in the form of triglycerides. (thoughtco.com)
- Such complications include an inability to break down glucose (glucose intolerance), elevated levels of triglycerides (a type of fat) in the blood (hypertriglyceridemia), and diabetes. (rarediseases.org)
- Adipose tissue is a highly specialized loose connective tissue able to store large quantities of triacylglycerol (triglycerides) and fat-soluble substances. (biomedcentral.com)
- This negative energy balance agreed with decreased fat mass and increased BAT weight and temperature, as well as with lowered plasma levels of triglycerides, cholesterol, nonessential fatty acids (NEFAs), and the adipokines leptin and TNF-α. (biologists.org)
- When the body requires additional energy, the droplets of triglycerides contained in adipocytes undergo enzymatic hydrolysis to produce free fatty acids and glycerol. (merriam-webster.com)
- Subjects with higher gene richness and A. muciniphila abundance exhibited the healthiest metabolic status, particularly in fasting plasma glucose, plasma triglycerides and body fat distribution. (bmj.com)
- Pathological obesity is often associated with adipocyte hypertrophy ( 1 - 3 ). (frontiersin.org)
- As shown by a recent study, obesity and high fat diet (HFD) can also increase O 2 consumption in adipocytes likely due to uncoupled respiration induced by free fatty acids ( 6 ). (frontiersin.org)
- In contrast, other studies have found no evidence of obesity-associated hypoxia in human abdominal subcutaneous fat ( 11 , 12 ). (frontiersin.org)
- The purpose of the present study was to investigate the effect of two AKGs isoforms on obesity and insulin resistance in mice fed high-fat (HF) diet. (hindawi.com)
- Evidence has accumulated indicating that obesity is closely associated with a state of systematic, low-grade inflammation characterized by activation of inflammatory signaling pathways and abnormal cytokine production in adipose tissue [ 2 , 3 ]. (hindawi.com)
- Body weight, fat accumulation, and serum biochemical parameters were used to evaluate obesity. (mdpi.com)
- High energy intake, malnourished diets containing lots of fat, and refined carbohydrates coupled with a sedentary lifestyle are believed to contribute to the global obesity epidemic [ 1 , 2 ]. (mdpi.com)
- With obesity, adipose tissue mass expands and adipocyte (fat cell) size increases. (sciencemag.org)
- Could drinking green tea prime our bodies to prevent obesity and other diet-induced harms? (medicalnewstoday.com)
- If the switch is faulty, they say, then the body is likely to store more fat, thus becoming predisposed to obesity. (medicalnewstoday.com)
- The Metabolic Disease & Obesity program of the Biomedicine Discovery Institute, which is led by Prof. Tiganis, has found a link between food intake and the process whereby white fat turns into brown fat. (medicalnewstoday.com)
- Her clinical research program includes human studies on obesity, regional fat distribution, and the role of adipocytes and adipose tissue immune cells in promoting insulin resistance and type 2 diabetes. (stanford.edu)
- One potentially unifying hypothesis with regard to obesity-associated insulin resistance is that those individuals who fail to respond to caloric excess/obesity with adequate adipocyte differentiation and expanded subcutaneous fat storage capacity develop increased circulating FFAs, ectopic fat deposition, stress on adipocytes, triggering localized and systemic inflammation and ultimately insulin resistance in skeletal muscle. (stanford.edu)
- We find sex-specific differences in insulin action in adipocytes that may contribute to the sexual dimorphism of insulin resistance and suggest the possibility of more effective sex-specific therapies for obesity, diabetes, and metabolic syndrome. (diabetesjournals.org)
- However, as well as having a role in energy storage, adipocytes also secrete numerous peptides that might lead to insulin resistance or other complications of obesity ( Fig. 1 ). (nature.com)
- In addition, we noted that the size of the adipocytes was greater, which is an indication of hypertrophic obesity. (eurekalert.org)
- The Obesity Medicine Association defines obesity as a chronic, relapsing, multifactorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical and psychosocial health consequences. (acc.org)
- Adipose overexpression of desnutrin promotes fatty acid use and attenuates diet-induced obesity. (biomedsearch.com)
- CONCLUSIONS: We show that by increasing lipolysis, desnutrin overexpression causes reduced adipocyte TAG content and attenuation of diet-induced obesity. (biomedsearch.com)
- Methods for assessment, e.g., anthropometric indicators and imaging techniques, of several phenotypes of human obesity, with special reference to abdominal fat content, have been evaluated. (nih.gov)
- Obesity or being overweight in humans and most animals does not depend on body weight but on the amount of body fat-specifically, adipose tissue. (bionity.com)
- Obesity is characterized by an increase in the number and size of adipocytes. (jax.org)
- Although hyperphagia contributes to the obesity, homozygotes gain excess weight and deposit excess fat even when restricted to a diet sufficient for normal weight maintenance in lean mice. (jax.org)
- The obesity is characterized by an increase in both adipocyte number and size. (jax.org)
- Adipose tissue transplants in Lep ob homozygotes protect them from obesity, normalize insulin sensitivity, and restore fertility. (jax.org)
- The myriad of roles that adipose tissue plays in the body, as well as the increasing relevance of understanding adipose as it relates to obesity, demonstrate the importance of better understanding this tissue. (stembook.org)
- Abdominal obesity refers to the accumulation of fat in the central area of the body, which can lead to adverse effects such as hypertension, insulin resistance, and hyperlipidemia (5,6). (cdc.gov)
- The most common anthropometric indices used to screen for obesity and overweight are body mass index (BMI, weight in kg/height in m 2 ), waist circumference (WC), and waist-to-hip ratio (WHR) (2,7,8). (cdc.gov)
- Obesity is considered as top at risk condition in the world and it is mandatory to identify the physiopathological causes involved in adipose tissue enlargement and related metabolic and cardiovascular health disorders. (springer.com)
- The study aimed to evaluate the effects of father's obesity upon white adipose tissue (WAT) remodeling, resulting in activation of signaling pathways and inflammation in male and female offspring. (springer.com)
- We observed that father's obesity influences the offspring in adult life, with an impairment in insulin homeostasis, adipocyte remodeling, and adipose tissue overexpression of IL-6 and TNF-alpha in male offspring. (springer.com)
- Flegal KM, Carroll MD, Kit BK, Ogden CL (2012) Prevalence of obesity and trends in the distribution of body mass index among US adults, 1999-2010. (springer.com)
- These include adipogenesis and obesity in humans [4- as well as lipid metabolism and fat deposition in livestock [8, (thefreelibrary.com)
- However, weight-related indices of obesity may be related differently to health end-points, compared with fat-related indices (such as body fat distribution and fat mass), as they may capture different dimensions of obesity and the associated biological effects. (wiley.com)
- Fat mass is a component of total body weight and one of the indices of obesity. (wiley.com)
- obesity refers to the accumulation of fat in the central area of the body, which can lead to adverse effects such as hypertension, in- The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. (cdc.gov)
- When this happens the person starts to grow in size adding weight which if not controlled the person reaches obesity level that is above (29.99 lb) the normal body Mass index. (pregnancyandlowbackpain.com)
- This means that they have more fat cells in their body and so may not loose a significant weight Like in people whose obesity is from childhood whose fat cell are inflated and can easily be shrunken. (pregnancyandlowbackpain.com)
- It is believed that obesity induced metabolic syndrome is caused by excessive fat accumulation that triggers detrimental inflammation and prevents organs from functioning adequately (Olefsky and Glass, 2010). (medicalxpress.com)
- These cells are important in removing excess fat from the body and also help build the body's infrastructure to accommodate new fat reserves without causing complications typically associated with obesity. (medicalxpress.com)
- Neuropilin-1 expression in adipose tissue macrophages protects against obesity and metabolic syndrome, Science Immunology (2018). (medicalxpress.com)
- Using a rat model, we found that a maternal low protein followed by postnatal high fat diet results in increased offspring obesity and subcutaneous fat tissue weight possibly due to decreased beige color adipocyte numbers and beige color adipocyte's fat metabolizing capacity caused by reduced numbers of mitochondria. (usda.gov)
- These results indicate that a maternal low protein and postnatal high fat diets increase the risk for offspring obesity and risk for type 2 diabetes by reduced fat metabolism in the subcutaneous fat tissue by decreased beige color fat cells. (usda.gov)
- We have shown that protein malnutrition during fetal growth followed by postnatal high-fat diets results in a rapid increase in subcutaneous adipose tissue mass in the offspring contributing to development of obesity and insulin resistance. (usda.gov)
- Our hypothesis is that a maternal LP and postnatal HF diets increase the risk of development of obesity and insulin resistance in offspring, in part, by reducing the conversion of precursor white adipocytes into beige adipocytes in the subcutaneous adipose tissue of offspring. (usda.gov)
- These finding suggest that high-fat diet fed offspring from mothers that consumed a low-protein diet have reduced induction of beige adipocytes in subcutaneous adipose tissue and that this may be part of the mechanism by which maternal protein malnutrition may cause offspring obesity and metabolic alterations. (usda.gov)
- Even obesity researchers have seldom regarded adipose tissue as worthy of research in its own right. (newscientist.com)
- Single-handedly she has challenged the centuries-old view that 'fat is just fat'," says Andrew Prentice, head of obesity research at the Medical Research Council's Dunn Nutrition Unit in Cambridge. (newscientist.com)
- Upper and lower body adipose tissue fat mass show opposite associations with complications of obesity such as type 2 diabetes and cardiovascular disease. (sdu.dk)
- Stored body fat in its most easily recognisable lumpy form - the type that contributes to obesity if accumulated in significant quantities - is made up of free fatty acids liberated from various lipoproteins (a lipoprotein is a chemical compound made of protein and fat , that transports lipids around the body to perform various biological functions). (bodybuilding.com)
- A large accumulation of abdominal fat (or central obesity) is viewed as an important marker of diabetes as, due to its specific metabolic profile, and given it can prevent a normal insulin response, it is more prone to impaired glucose tolerance, a state that often leads to full-blown diabetes . (bodybuilding.com)
- Diagnosed by measuring the hip to waist ratio, central obesity (which can be confirmed if the waist measurement exceeds 1.0 in men, or 0.9 in women) also contributes to the expression of Resistin, a hormone that is thought to suppress the ability of insulin to stimulate glucose uptake in fat cells, thus potentially linking obesity to diabetes. (bodybuilding.com)
- Previous studies have shown that early life nutrition can modulate the development of white adipose tissue and thereby affect the risk on obesity and metabolic disease later in life. (biomedcentral.com)
- Their research demonstrated the mechanism by which LSD1 suppresses the activity of mitochondrial metabolism genes , resulting in increases fat accumulation and obesity. (phys.org)
- However, what is relatively unknown about the effects of obesity-also called adiposity-is that adipose (fatty) tissue is actually metabolically, physiologically, and immunologically very active by itself. (selfgrowth.com)
- Kim is currently working to improve the stability and bio-availability of a concentrated form of piceatannol so that therapeutic doses can be tested, potentially to stop the formation of excess fat tissue and be used to treat obesity. (bewellbuzz.com)
- Accumulation of visceral adipose tissue (VAT) is clearly associated with an increased risk of obesity-related diseases and all-cause mortality, whereas gluteal subcutaneous fat accumulation (g-SAT) is associated with a lower risk. (biomedcentral.com)
- Chronic genetic AMPK activation results in protection against diet-induced obesity due to an increase in whole-body energy expenditure, most probably because of a substantial increase in the oxygen consumption rate of white adipose tissue. (imperial.ac.uk)
- Our findings indicate that AMPK activation specifically in adipose tissue may have therapeutic potential for the treatment of obesity. (imperial.ac.uk)
- Hypoxia affects glucose homeostasis, lipid metabolism, and production of adipokines and pro-inflammatory cytokines in adipose tissue ( 7 , 10 , 17 ). (frontiersin.org)
- Depots of interscapular brown adipose tissue (iBAT) were clearly distinguished from proximal white adipose tissue (WAT), including perigonadal WAT (pgWAT) and mammary gland (MG). The skin-associated lipid layer, dermal white adipose tissue (dWAT), was clearly separated from internal adipose depots. (nih.gov)
- The size of adipocytes varies according to their lipid content and is linked to the function of the cells, with larger adipocytes usually being more active with regard to their metabolic activity and adipokine production ( 2 ). (frontiersin.org)
- Impaired insulin-stimulated glucose uptake in skeletal muscle and lipid metabolism in adipocytes are central characteristics of insulin-resistance. (pnas.org)
- TZDs enhance insulin sensitivity by improving glucose and lipid metabolism, altering adipokine secretion, and reducing adipose tissue inflammation ( 4 , 8 ). (pnas.org)
- Adipocytes from females have higher mRNA/protein levels of several genes involved in glucose and lipid metabolism. (diabetesjournals.org)
- After castration, adipocytes of male mice showed increased insulin sensitivity and increased lipogenic rates, whereas adipocytes of females demonstrate decreased lipid production. (diabetesjournals.org)
- The body fat distribution and the metabolic profile in nonobese and obese individuals is discussed relative to lipolysis, antilypolysis and lipogenesis, insulin sensitivity, and glucose, lipid, and protein metabolism. (nih.gov)
- In this study, we elucidated that Buddleja officinalis Maximowicz extract significantly inhibited lipid accumulation during 3T3-L1 adipocyte differentiation. (mdpi.com)
- Brown adipocytes are mitochondria rich and lipid poor in comparison with white adipocytes, which contain a single massive lipid filled organelle. (stembook.org)
- S 26948 is as effective as rosiglitazone in reducing insulin resistance and lipid homeostasis, but does not increase body or white adipose tissue weight. (sigmaaldrich.com)
- Whole-body energy homeostasis depends on the precisely regulated balance of lipid storage and mobilization. (sciencemag.org)
- PKA phosphorylates two important proteins with established functions in lipolysis: HSL, an enzyme that catabolizes adipose tissue TGs, and perilipin A, an abundant structural protein located on the surface of lipid droplets. (sciencemag.org)
- The upper body adipose tissue has a high lipid turnover and is archetypically responding to fight and flight behaviour whereas the lower body fat tissue is the prime tissue for long-term fat storage. (sdu.dk)
- When we refer to body fat we are talking about adipose tissue and its lipid containing adipocytes. (bodybuilding.com)
- Postnatal feeding with large, phospholipid coated lipid droplets generating a different supramolecular structure of dietary lipids enhances adult gene and protein expression of specific mitochondrial oxidative capacity markers, indicative of increased substrate oxidation in white adipose tissue and skeletal muscle. (biomedcentral.com)
- Patients suffering from the disease have mutations in their BSCL2 gene that result in a lack of fatty tissue in the body and a lack of functioning adipoctyes for lipid storage. (asbmb.org)
- Recently, the role of Bscl2 regulation in mature adipocyte maintenance was investigated and the results described in the Journal of Lipid Research . (asbmb.org)
- White adipocytes are characterized by a unilocular lipid droplet occupying 95% of the cell volume, and a 'squeezed' nucleus. (biomedcentral.com)
- Objective: To compare the effectiveness of a conjugated linoleic acid (CLA) isomer mixture (mCLA) with each main isomer [trans-10,cis-12 CLA (CLA10,12) and cis-9,trans-11 CLA (CLA9,11)] in causing body lipid loss and adipose tissue apoptosis. (unl.edu)
- Mice fed mCLA or CLA10,12 had less body lipid ( p _ 0.05), smaller retroperitoneal fat pads ( p p (unl.edu)
- However, increased lipid mobilization due to enhanced adipocyte lipolysis seems to be a major course ( 1 , 2 , 4 , 5 ). (aacrjournals.org)
- have found that the average pO 2 is low at 15.2 mmHg in adipose tissue of the genetically obese ob/ob mice compared to the average of 47.9 mmHg in that of lean mice ( 7 ). (frontiersin.org)
- Decreased adipose pO 2 has further been independently confirmed in HFD-induced obese mice and ob/ob mice ( 8 , 9 ). (frontiersin.org)
- Previous research with mice indicates that fat-storing cells produced from bone marrow stem cells may be particularly harmful because they produce substances that promote inflammation and hinder the ability of other cells to respond to insulin. (eurekalert.org)
- Our results showed that high-dose SA decreased body weight, serum triglyceride, cholesterol, fasting glucose level, insulin level, and serum leptin level of the HF fed mice, while high-dose BA increased fasting insulin level of the HF fed mice. (hindawi.com)
- In this study, five groups of mice ( n = 9/group) were used including a normal diet with vehicle treatment, and a high-fat diet (HFD) with vehicle or the water extracts from aged OTs (EAOTs, three different storage years) by oral gavage at 1000 mg/kg·BW for 6 weeks. (mdpi.com)
- Administration of pyocyanin to male C57BL/6J mice acutely reduced body temperature with altered locomotion, but caused sustained weight loss. (nih.gov)
- Chronic pyocyanin administration to male and female C57BL/6J mice resulted in sustained reductions in body weight and fat mass, with adipose-specific AhR activation. (nih.gov)
- Pyocyanin-treated male mice had decreased energy expenditure and physical activity, and increased adipose explant lipolysis. (nih.gov)
- These results demonstrate that pyocyanin reduces adipocyte differentiation and decreases body weight and fat mass in male and female mice, suggesting that pyocyanin may play a role in septic cachexia. (nih.gov)
- Insulin secretion was impaired in these mice under basal and high-glucose conditions, and glucose disposal was shifted from skeletal muscle to adipose tissue. (diabetesjournals.org)
- The β-DKO mice also had increased body fat and adipose tissue macrophage content, elevated plasma interleukin-6 and MCP-1 levels, and decreased skeletal muscle mass. (diabetesjournals.org)
- OBJECTIVE To investigate how insulin sensitivity and glucose metabolism differ in adipocytes between different fat depots of male and female mice and how sex steroids contribute to these differences. (diabetesjournals.org)
- In this study, we have investigated how insulin sensitivity and glucose metabolism differ in adipocytes from visceral and subcutaneous depots between male and female mice and how sex steroids could contribute to these differences. (diabetesjournals.org)
- The mice that received the enterobacterium had significantly higher subcutaneous fat mass than the mice that received saline. (eurekalert.org)
- The researchers were expecting to find liver fat accumulation in the mice but this was not the case. (eurekalert.org)
- They eat unlimited amounts of high-fat mouse chow, but have about 50 percent less body fat than normal mice on a low-fat diet. (innovations-report.com)
- The genetically altered mice are leaner than normal mice, but they also have some less-than-desirable characteristics - such as underdeveloped mammary glands, an inability to generate body heat and skin that's twice as thick as normal. (innovations-report.com)
- All these changes appear to be caused by a protein called Wnt10b, which is present in artificially high amounts in fat tissue from the experimental mice. (innovations-report.com)
- High levels of Wnt10b expression produced animals with 50 percent less body fat and fewer fat cells, regardless of whether the mice ate a high-fat or low-fat diet," MacDougald says. (innovations-report.com)
- Under the control of the FABP4 promoter, fatty tissue in the transgenic mice contained 50 times the amount of Wnt10b found in adipose tissue from normal mice. (innovations-report.com)
- Longo and MacDougald discovered that Wnt10b had a different effect on the two types of fat found in normal mice. (innovations-report.com)
- While the transgenic mice in the U-M study had half as much white fat as normal mice, they had virtually no brown fat at all. (innovations-report.com)
- Even though the Wnt10b transgenic mice had half as much adipose tissue and produced half the normal amount of leptin, they had none of the metabolic consequences we expected," MacDougald says. (innovations-report.com)
- In fact, the insulin sensitivity and glucose tolerance of transgenic mice on a high-fat diet was better than that of normal mice on a low-fat diet. (innovations-report.com)
- RESEARCH DESIGN AND METHODS: We generated transgenic mice overexpressing desnutrin (also called adipose triglyceride lipase [ATGL]) in adipocytes (aP2-desnutrin) and also performed adenoviral-mediated overexpression of desnutrin in 3T3-L1CARDelta1 adipocytes. (biomedsearch.com)
- RESULTS: aP2-desnutrin mice were leaner with decreased adipose tissue TAG content and smaller adipocyte size. (biomedsearch.com)
- We found increased cycling between diacylglycerol (DAG) and TAG and increased fatty acid oxidation in adipocytes from these mice, as well as improved insulin sensitivity. (biomedsearch.com)
- Injection of recombinant leptin into obese homozygotes sharply reduces body weight, decreases food intake, increases energy expenditure, and restores fertility in male mice. (jax.org)
- Furthermore, Buddleja officinalis Maximowicz extract reduced the body weight gain induced through feeding a high-fat diet to C57BL/6 mice. (mdpi.com)
- The treatment of Buddleja officinalis Maximowicz extract significantly reduced the adipose tissue weight to 2.7/100 g of body weight in high-fat mice. (mdpi.com)
- When their adipose tissue morphology was investigated for histochemical staining, the distribution of cell size in the high-fat diet groups was hypertrophied compared with those from Buddleja officinalis Maximowicz extract-treated mice. (mdpi.com)
- 9 examined the effects of three light periods on body mass in mice ( Swiss-Webster mice ). (nature.com)
- 12 reported that daily light duration (12 h, 16 h and 24 h per day) positively correlated with the body fat mass ( Charles-River mice ). (nature.com)
- Bringhenti I, Ornellas F, Mandarim-de-Lacerda CA, Aguila MB (2016) The insulin-signaling pathway of the pancreatic islet is impaired in adult mice offspring of mothers fed a high-fat diet. (springer.com)
- Gregorio BM, Souza-Mello V, Mandarim-de-Lacerda CA, Aguila MB (2013) Maternal high-fat diet is associated with altered pancreatic remodelling in mice offspring. (springer.com)
- NRP1-deficicent mice exhibited significant enlargement of fat cells (right) after 10 weeks of a high-fat diet, compared to mice with functional NRP1 (left). (medicalxpress.com)
- Accretion of NRP1-expressing macrophages in fat tissue during high fat diet-induced weight gain in mice. (medicalxpress.com)
- Results showed that subcutaneous adipose and liver fibroblast growth factor 21 (FGF21), PRDM16, and beige adipocyte marker CD137, mRNA increase with postnatal HF diet in maternal NP group mice. (usda.gov)
- In contrast, mice fed maternal LP and postnatal HF diets showed no increase in subcutaneous adipose tissue mitochondrial copy number, oxygen consumption rate, FGF21, PRDM16, and CD137 mRNA. (usda.gov)
- Our results confirm the presence of M. tuberculosis in fat tissue after aerosol infection of mice and show that loss of fat cells is associated with an increase in pulmonary M. tuberculosis burden and pathology. (asm.org)
- The Soy Isoflavone Genistein Decreases Adipose Deposition in Mice, Endocrinology (2003), vol. 144, No. 8, pp. 3315-3320. (patentgenius.com)
- ATGL is highly expressed in adipose tissue of mice and humans. (sciencemag.org)
- However, the nonobese phenotype of HSL knock-out (HSL-KO) mice ( 7 - 9 ) and the accumulation of diglycerides (DGs) in their adipose tissue ( 10 ) suggest that there may be one or more additional lipases in adipose tissue that preferentially hydrolyzes the first ester bond of the TG molecule. (sciencemag.org)
- Mice have eight major adipose depots, four of which are within the abdominal cavity . (wikipedia.org)
- Previously, global knockdown of Bscl2 in mice resulted in widespread ablation of WAT, while the remaining white fat demonstrated substantial browning effects. (asbmb.org)
- The body weight, food intake and energy expenditures of the mice (versus a control group) were monitored for 12 weeks after inducing Bscl2 knockout, and the mice also were tested for resistance to insulin and glucose tolerance. (asbmb.org)
- Intriguingly, the knockout mice showed decreased body fat, reduced food intake and slightly increased energy expenditure, overall leading to leaner mice, even when placed on a high-fat diet. (asbmb.org)
- Knockout mice fed a high-fat diet showed an increase in liver mass of 130 percent. (asbmb.org)
- We previously reported that Prip knock-out (KO) mice exhibit a lean phenotype with a small amount of white adipose tissue. (pubmedcentralcanada.ca)
- In the present study, we examined whether PRIP is involved in energy metabolism, which could explain the lean phenotype, using high-fat diet (HFD)-fed mice. (pubmedcentralcanada.ca)
- Energy expenditure and body temperature at night were significantly higher in Prip -KO mice than in wild-type mice. (pubmedcentralcanada.ca)
- Here we show that mice expressing a gain-of-function AMPK mutant6 display a change in morphology of subcutaneous white adipocytes that is reminiscent of browning. (imperial.ac.uk)
- In response to a high-fat diet (HFD), expression of skeletal muscle-associated genes is induced in subcutaneous white adipocytes from the gain-of-function AMPK mutant mice. (imperial.ac.uk)
- In an experiment with mice, the amount of beige adipocytes in older animals was maintained at nearly the level corresponding to that of younger mice. (innovations-report.com)
- In their experiments, the team proved that pharmacological activation of Pparα is sufficient to hinder the premature loss of beige fat cells in mice with low levels of Lsd1. (innovations-report.com)
- Mice of the MH line were slightly less sensitive than MC or ML mice to CLA-induced adipose tissue apoptosis. (unl.edu)
- Although mice of a genotype with less body fat and greater metabolic rate and feed intake appear less sensitive, these CLA effects are robust for mice of varying metabolic background. (unl.edu)
- Mice with adipocyte-specific deletion of the CB1-encoding gene had an overall improved metabolic profile in addition to reduced body weight and total adiposity. (jci.org)
- Abundance of Akkermansia muciniphila , a mucin-degrading bacterium, has been inversely associated with body fat mass and glucose intolerance in mice, but more evidence is needed in humans. (bmj.com)
- HFD vs. ND rats also showed higher expression of genes involved in fatty acid oxidation, mitochondrial biogenesis and brown fat adipogenesis, as well as augmented mitochondrial mass in WAT but not in the liver or skeletal muscle. (biomedsearch.com)
- Breaks down triacylglycerols in adipose tissue to fatty acids and glycerol. (powershow.com)
- The LPL breaks the circulating to free fatty acids which can enter the adipocyte. (ayurhelp.com)
- Insulin is also required for the transport of glucose, which is needed for conversion of free fatty acids to tryglycerides in adipocytes. (ayurhelp.com)
- Adipocytes make up most of the body's fatty (adipose) tissue. (medlineplus.gov)
- At the same time, EAOTs clearly alleviated fatty liver and reduced the size of adipocytes in the epididymal fat, especially in the 2006 group. (mdpi.com)
- Fat tissue is a powerful producer of fatty acids, classical cytokines, chemokines, and adipokines, to name just some of the factors released. (frontiersin.org)
- Part of this process is the development of fatty adipose tissue, which contains fat cells called adipocytes. (innovations-report.com)
- OBJECTIVE: To investigate the role of desnutrin in adipose tissue triacylglycerol (TAG) and fatty acid metabolism. (biomedsearch.com)
- Desnutrin-mediated lipolysis promotes fatty acid oxidation and re-esterification within adipocytes. (biomedsearch.com)
- While the white adipose tissue (WAT) is the main energy repository in the body (mobilizing fatty acids according to body needs) thanks to white adipocyte properties, WAT is also a multicellular organ communicating with other body organs (brain, muscles, liver, pancreas, heart, vessels, etc…) via complex networks of endocrine signals. (springer.com)
- Skeletal muscles burn glucose as well as fatty acids and ketone bodies for fuel. (reference.com)
- Instead, adipocytes rely on the energy stored in triacylglycerol droplets to synthesize and store fatty acids as a long-term energy reserve. (reference.com)
- Positive correlation was found between light exposure duration and white adipose tissue, average adipocyte size, as well as plasma free fatty acid levels. (nature.com)
- Additionally, industrial trans fatty acids promote fat storage in the liver at the expense of adipose tissue compared with cis-unsaturated fatty acids and SFAs. (wur.nl)
- In cultured hepatocytes and adipocytes, industrial trans fatty acids, but not cis-unsaturated fatty acids or SFAs, stimulate the cholesterol synthesis pathway by activating sterol regulatory element binding protein (SREBP) 2-mediated gene regulation. (wur.nl)
- In this form, it reduces the level of fatty acids through its delivery to the adipose tissue. (illpumpyouup.com)
- Researchers at the University of California, San Diego report new insights into what nutrients fat cells metabolize to make fatty acids. (phys.org)
- Mobilization of fatty acids from triglyceride stores in adipose tissue requires lipolytic enzymes. (sciencemag.org)
- Mobilization of stored fat is mediated by lipolytic enzymes, which degrade adipose TGs and release nonesterified fatty acids (FAs) into the circulation. (sciencemag.org)
- White adipose tissue, or WAT, mainly functions as energy storage, releasing fatty acids into the bloodstream to feed the body, while brown adipose tissue, or BAT, acts to generate heat by consuming fat stores and is predominant in infants, who cannot shiver in response to cold temperatures. (asbmb.org)
- Fatty tissue is composed of fat cells called adipocytes. (selfgrowth.com)
- Additional symptoms such as fat accumulation in the liver (fatty liver or hepatic steatosis) may also occur. (rarediseases.org)
- Beige fat cells, a special type of adipocytes, have the capability to use energy reserves - fatty deposits - by generating heat in a process known as thermogenesis. (innovations-report.com)
- β-adrenergic receptor activation promotes brown adipose tissue (BAT) β-oxidation and thermogenesis by burning fatty acids during uncoupling respiration. (biologists.org)
- After adjustment for BMI/ethnicity, women with IGM had increased serum adipocyte fatty acid-binding protein, weight gain after index pregnancy, and a lower proportion of fat-free mass. (gu.se)
- Compared to WAT, beige adipose tissue has more mitochondria and performs more fatty acid oxidation, but stores less lipids 9 . (alpco.com)
- Cytokines (cell signalling proteins) secreted by adipose tissue. (wcrf.org)
- A protein secreted by adipose tissue that is inversely related to body fatness. (wcrf.org)
- Native leptin is a hormone predominantly secreted by adipose tissue that informs the central nervous system of the status of energy stores in the body. (centerwatch.com)
- Body weight, fasting glucose, lipids, insulin and leptin levels, serum IL-1 β , and TNF- α levels were compared among different groups. (hindawi.com)
- The hormone leptin is secreted by fat cells to help control appetite and signal when you are full. (verywellhealth.com)
- Adipose tissue produces proteins, such as leptin and adiponectin, which affect the body's ability to respond to insulin. (innovations-report.com)
- Adipose tissue also serves as an important endocrine organ by producing recently-discovered hormones such as leptin , resistin and the cytokine TNFα . (bionity.com)
- In patients with generalized lipodystrophy, leptin deficiency, resulting from the loss of adipose tissue, contributes to excess caloric intake, which exacerbates the metabolic abnormalities. (centerwatch.com)
- Far from being hormonally inert, adipose tissue has, in recent years, been recognized as a major endocrine organ, as it produces hormones such as leptin , estrogen , resistin , and the cytokine TNFα . (wikipedia.org)
- White fat cells-all 30 billion of them-secrete adiponectin, leptin and resistin, and weigh 13 kg/2 stone/30 lbs. (thefreedictionary.com)
- Adipocytes are the main source of leptin. (selfgrowth.com)
- White, brown, and beige adipose tissue generate and secrete adipokines, such as adiponectin and leptin, which facilitate adipose tissue-liver crosstalk and insulin sensitivity 1 . (alpco.com)
- The mechanisms underlying insulin resistance in this state are multiple and complex, including the recruitment of immune cells, particularly macrophages, to adipose tissue. (sciencemag.org)
- 2017), Adipose tissue macrophages develop from bone ma. (xenbase.org)
- Adipose tissue macrophages develop from bone marrow-independent progenitors in Xenopus laevis and mouse. (xenbase.org)
- Adipose tissue comprises not only mature adipocytes but harbors a variety of other cells including adipocyte precursor cells (preadipocytes), fibroblasts, and immune cells including T cells and macrophages. (frontiersin.org)
- TZDs are ligands of peroxisome proliferator-activated receptor gamma (PPARγ) through which they alter the expression of hundreds of genes in skeletal muscle, adipocytes, and macrophages. (pnas.org)
- Fat tissue is composed of a number of cell types: adipocytes, vascular endothelial cells, fibroblasts, and macrophages. (stembook.org)
- In addition to adipocytes, adipose tissue contains the stromal vascular fraction (SVF) of cells including preadipocytes , fibroblasts , vascular endothelial cells and a variety of immune cells such as adipose tissue macrophages . (wikipedia.org)
- SVF includes preadipocytes , fibroblasts , adipose tissue macrophages , and endothelial cells . (wikipedia.org)
- Despite adipocytes represent ~90% of the tissue volume, other cells type are present in adipose tissue such as preadipocytes, endothelial cells, pericytes, multipotent stem cells and immune system cells (macrophages, T-cells, neutrophils, lymphocytes). (biomedcentral.com)
- These changes were associated with an increase in sympathetic tone of the adipose tissue and expansion of activated macrophages, both of which occurred prior to changes in body weight, lending support to a causal relationship between loss of CB1 in adipocytes and systemic metabolic changes. (jci.org)
- It has been shown that hypoxia inhibits adipogenic differentiation ( 14 , 15 ), which may further enhance adipocyte hypertrophy due to inadequate de novo adipogenesis ( 16 ). (frontiersin.org)
- Pyocyanin has affinity for the aryl hydrocarbon receptor (AhR), which is expressed on adipocytes and regulates adipocyte differentiation. (nih.gov)
- The purpose of this study was to define in vitro and in vivo effects of pyocyanin on adipocyte differentiation and body weight regulation as relates to septic cachexia. (nih.gov)
- PPARγ is necessary and sufficient for adipocyte differentiation and is implicated in the transcription of a group of adipogenesis-specific transcripts. (stembook.org)
- Insulin and insulin-like growth factor 1 (IGF-1) play important roles in adipocyte differentiation, glucose tolerance and insulin sensitivity. (harvard.edu)
- The expression of Lipin 1 is induced during adipocyte differentiation (1). (cellsignal.com)
- The finding of a different expression of HOX genes, fundamental during the embryo development, suggests an early regional differentiation of subcutaneous adipose depots. (biomedcentral.com)
- Fat not used in metabolic processes is channelled towards adipocytes by way of small capillaries. (sciencephoto.com)
- Both compartments exert different competence with regard to metabolic and immune regulating function with the increase in metabolic diseases in particular being linked to the visceral fat ( 3 ). (frontiersin.org)
- Accumulation of visceral fat is linked to the development of these metabolic complications, whereas accumulation of subcutaneous fat is not ( 2 - 4 ). (diabetesjournals.org)
- These products of triglyceride metabolism are the main form in which energy is transferred from stores in adipose tissue to other sites in the body for metabolic use. (nature.com)
- And they show no signs of diabetes or other metabolic disorders, which are common in animals with too little fat. (innovations-report.com)
- When we started making these animals, we thought they would have reduced amounts of fat, and thus suffer from metabolic complications, including diabetes," Longo says. (innovations-report.com)
- Further, increased body fat indirectly contributes to heart disease, "through promotion of sleep apnea, thromboembolic disease and onset or worsening of metabolic diseases that are major cardiovascular disease risk factors, including dyslipidemia, type 2 diabetes, high blood pressure and metabolic syndrome," Bays says. (acc.org)
- Proinflammatory signaling generated in response to bacterial lipopolysaccharide may affect neurobehavioral brain centers and adversely affect adipocyte function, leading to adiposopathy and increased risk for metabolic disease. (acc.org)
- IMPORTANCE Although the lungs are the port of entry and the predominant site of TB disease manifestation, we and others have demonstrated that M. tuberculosis also persists in adipose tissue of aerosol-infected animals and directly or indirectly alters adipose tissue physiology, which in turn alters whole-body immuno-metabolic homeostasis. (asm.org)
- NGF might contribute to inflammation and metabolic disorders associated with body weight changes ( 19 , 21 ). (aacrjournals.org)
- The diagram summarizes the main roles and effects of representative fat-derived products that have been related to insulin resistance and metabolic risk. (diabetesjournals.org)
- Markers for mitochondrial content and capacity were analyzed in retroperitoneal white adipose tissue and gene expression of metabolic markers was measured in both retroperitoneal white adipose tissue and muscle tibialis (M. tibialis) at postnatal day 98. (biomedcentral.com)
- Skeletal muscle acts as a metabolic organ in the body and performs glycolysis in fast muscles and mitochondrial metabolism in slow muscles. (phys.org)
- Adipokines affect and control metabolic processes throughout the body. (selfgrowth.com)
- Metabolic processes involve the chemical reactions in the body that produce energy and make cells work. (selfgrowth.com)
- Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. (lu.se)
- Animal and in vitro studies demonstrated that adipocytes from visceral and subcutaneous depots have distinct morphological, metabolic and functional characteristics. (biomedcentral.com)
- Mesotherapy employs multiple injections of pharmaceutical and homeopathic medications, plant extracts, vitamins, and other ingredients into subcutaneous fat. (wikipedia.org)
- Subcutaneous fat is present as hypodermis under the skin and visceral adipose tissue surrounds organs in the abdominal cavity. (frontiersin.org)
- In humans, men accumulate more visceral fat, whereas women accumulate more subcutaneous fat and have a higher percentage of body fat compared with men. (diabetesjournals.org)
- For example, adipose surrounding sex organs can secrete sex hormones, subcutaneous fat is responsive to energy storage needs and structural fat pads on the feet have not been shown to secrete any factors of interest, nor do they show significant changes in growth. (stembook.org)
- Adipose tissue deposits are located in different regions of the body, primarily in the form of subcutaneous fat or intramuscular fat in domestic animals. (thefreelibrary.com)
- In humans, adipose tissue is located: beneath the skin ( subcutaneous fat ), around internal organs ( visceral fat ), in bone marrow ( yellow bone marrow ), intermuscular ( Muscular system ) and in the breast tissue. (wikipedia.org)
- Individuals with this form of lipodystrophy experience the loss of subcutaneous fat from the face, neck, and arms and legs. (rarediseases.org)
- The adipose tissue expansion and reduced skeletal muscle mass, but not the systemic inflammation or increased adipose tissue macrophage content, were reversed when plasma insulin levels were normalized by insulin supplementation. (diabetesjournals.org)
- Insulin resistant subjects exhibited alterations in skeletal muscle (e.g., glycolytic flux and intramuscular adipocytes) and adipose tissue (e.g., mitochondrial metabolism and inflammation) that improved relative to TZD-induced insulin sensitization. (pnas.org)
- Several studies have shown that decreased mitochondrial protein and oxidative phosphorylation (OXPHOS) in skeletal muscle and adipocytes are also underlying factors of insulin resistance ( 6 , 7 ). (pnas.org)
- We have conducted a mechanistic analysis of the gene expression profiles of adipose tissue (AT) and skeletal muscle (SM) from 72 subjects ranging from insulin-sensitive to insulin-resistant. (pnas.org)
- 2007 ). Brown fat can also be found in white adipose depots and skeletal muscle in small amounts. (stembook.org)
- With insulin resistance, metabolism in multiple organ systems such as skeletal muscle, liver, and adipose tissue is altered. (physiology.org)
- It is characterized by loss of both adipose tissue and skeletal muscle ( 1 , 2 ). (aacrjournals.org)
- Skeletal muscle is the major site for FA oxidation in humans, whereas in rodents, brown fat cells contribute as well. (aacrjournals.org)
- A typical 70 kg (150 lb) person has about 135,000 kcal of energy stored as fat, 24,000 kcal as protein, 720 kcal as glycogen reserves, and 80 kcal as blood glucose. (powershow.com)
- RESEARCH DESIGN AND METHODS Adipocytes from intra-abdominal/perigonadal (PG) and subcutaneous (SC) adipose tissue from normal, castrated, or steroid-implanted animals were isolated and analyzed for differences in insulin sensitivity and glucose metabolism. (diabetesjournals.org)
- Thus, despite having lower fat mass, the prevalence of diabetes and early abnormalities of glucose metabolism is higher in men than in women ( 7 ). (diabetesjournals.org)
- In patients with type II diabetes, insulin is less able to promote the uptake of glucose into muscle and fat, and to inhibit the production of glucose by the liver. (nature.com)
- The consensus among biochemists is that virtually every cell in the human body can break down sugar, usually in the form of glucose, to use as energy. (reference.com)
- Once glycogen stores are full, additional glucose is converted directly to fat. (reference.com)
- Similarly, the cells in adipose tissue, which hold most of the fat reserves in the body, seldom use glucose for fuel. (reference.com)
- In the periphery, nutrient levels are regulated in key storage organs ( e.g. fat in adipose tissue and glycogen in the liver and elsewhere) as well as in the blood ( e.g. blood glucose) ( 2 ). (pubmedcentralcanada.ca)
- She reportedly found a 40% increase to insulin sensitivity in muscle and fat cells, a significant improvement to glucose tolerance, but no effect on liver cells' insulin receptivity. (bewellbuzz.com)
- Resveratrol Improves Glucose Metabolism and Reduces Adipose Tissue Inflammation in Overweight Humans. (bewellbuzz.com)
- Our aim was to characterize adipose tissue and body composition in relation to glucose metabolism in women with a history of GDM and to identify factors associated with development of T2DM. (gu.se)
- We examined glucose tolerance (OGTT), insulin sensitivity (HOMA-IR), body composition (anthropometry, air displacement plethysmography), and blood chemistry in 39 women 6 years after GDM. (gu.se)
- We conclude that CIDEA is involved in adipose tissue loss in cancer cachexia and this may, at least in part, be due to its ability to inactivate PDC, thereby switching substrate oxidation in human fat cells from glucose to FAs. (aacrjournals.org)
- However, total energy expenditure in human fat cells (glucose and FA oxidation) is significant and constitutes up to 14% of whole body heat production ( 16 ). (aacrjournals.org)
- Results At baseline A. muciniphila was inversely related to fasting glucose, waist-to-hip ratio and subcutaneous adipocyte diameter. (bmj.com)
- We have recently identified a new mechanism connecting activation of the hypoxia-sensing pathway manifested by hypoxia-inducible factor (HIF) 2α to adipose tissue inflammation and hypertrophic cardiomyopathy. (frontiersin.org)
- However, the effects of the water extract from aged OTs (EAOTs, three different storage years) on fat deposition and inflammation, as well as potential mechanisms of action, were not adequately studied. (mdpi.com)
- We model the emergence of the inflammation as the result of adipose mass increase which, in turn, is a direct consequence of a prolonged excess of high calorie intake. (hindawi.com)
- The balance between two factors released by mammalian fat cells controls the degree of inflammation and insulin sensitivity in adipose tissue. (sciencemag.org)
- This review will summarize the current literature on the possible role of the mesenteric fat tissue in intestinal inflammation with a focus on Crohn's disease (CD). (frontiersin.org)
- CD is of particular interest in this context since the transmural intestinal inflammation has been associated with a characteristic hypertrophy of the mesenteric fat, a phenomenon called "creeping fat. (frontiersin.org)
- iii) do the answers generated before allow for an explanation of the role of the mesenteric fat tissue within intestinal inflammation? (frontiersin.org)
- Other manifestations of the condition include elevated intramuscular fat content ( 3 ), dysregulation of adipokine secretion, and chronic low-grade inflammation in adipose tissue ( 4 ). (pnas.org)
- Although better known for its roles in inflammation and immunity, TNF-α is expressed in normal adipocytes, is overexpressed in adipocytes from obese people, and can cause insulin resistance through effects on insulin-mediated cellular signalling pathways 4 . (nature.com)
- RESULTS Adipocytes from both PG and SC depots of females have increased lipogenic rates compared with those from males. (diabetesjournals.org)
- Adipocytes in different fat depots appear to have a distinct impact in insulin sensitivity. (diabetesjournals.org)
- Fat accumulation in different depots is also sexually dimorphic. (diabetesjournals.org)
- Adipose depots in different parts of the body have different biochemical profiles. (bionity.com)
- The two superficial depots are the paired inguinal depots, which are found anterior to the upper segment of the hind limbs (underneath the skin) and the subscapular depots, paired medial mixtures of brown adipose tissue adjacent to regions of white adipose tissue, which are found under the skin between the dorsal crests of the scapulae. (bionity.com)
- Of all the depots in the mouse, the gonadal depots are the largest and the most easily dissected (Cinti, 1999), comprising about 30% of dissectible fat, e.g. (bionity.com)
- The major fat depots in mammals are the subcutaneous and intra-abdominal depots. (stembook.org)
- Subcutaneous depots include fat under the skin in primarily the buttocks, thighs, and abdomen. (stembook.org)
- In addition to these major depots adipose can be found around organs such as the heart and sex organs, as well as regions as varied as the pads of feet and the bone marrow (Rosen and Spiegelman, 2000 ). (stembook.org)
- In this context adipose tissue depots have been under focus in the last decades and pivotal concepts have emerged from the studies of their complex biology. (springer.com)
- mammalian fat cells, or adipocytes, are meticulously organised, grouped into about a dozen special depots around the body. (newscientist.com)
- What's more, many of these fat depots do far more than simply store energy. (newscientist.com)
- Of all the depots in the mouse, the gonadal depots are the largest and the most easily dissected, comprising about 30% of dissectible fat. (wikipedia.org)
- SAT represents over 80% of total body fat and is most commonly distinguished in abdominal (a-SAT), gluteal-femoral depots (g-SAT). VAT, which is mostly associated with digestive organs, includes omental, mesenteric and epiploic adipose tissue depots. (biomedcentral.com)
- Navorsing in die Stephen Hough Basiese Wetenskappe Navorsingslaboratorium is gefokus op die normale funksie en siekteverwante patologiese wanfunksie van mesenkiemale stamselle (MSS) - in die besonder gekonsentreerd op die verskille tussen MSS wat van verskillende weefsels of depots gewerf is. (sun.ac.za)
- De novo generation of adipocytes from circulating progenitor cells in mouse and human adipose tissue. (eurekalert.org)
- Dynamics of Human Adipose Tissue. (springer.com)
- Epigenetic regulation of human adipose tissue fat distribution is not widely explored as a between-people explanation for fat distribution. (sdu.dk)
- Stimulation of the betaARs leads to lipolysis in white adipocytes and nonshivering thermogenesis in brown fat. (nih.gov)
- Mesotherapy injections allegedly target adipose fat cells, apparently by inducing lipolysis, rupture and cell death among adipocytes. (wikipedia.org)
- This aids in the break down of fat deposits through the process of lipolysis. (illpumpyouup.com)
- During periods of increased energy demand, lipolysis in adipocytes is activated by hormones, such as catecholamines. (sciencemag.org)
- These phenotypes were caused by the promotion of lipolysis in Prip -KO brown adipocytes, which is triggered by up-regulation of phosphorylation of the lipolysis-related proteins hormone-sensitive lipase and perilipin, followed by activation of UCP1 and/or up-regulation of thermogenesis-related genes ( e.g. peroxisome proliferator-activated receptor-γ coactivator-1α). (pubmedcentralcanada.ca)
- i.e. excessive energy is stored as triglyceride (TAG) and is supplied to the body by lipolysis in a nutrient-starved state. (pubmedcentralcanada.ca)
- Oleoylethanolamide (OEA) can inhibit feeding and stimulate lipolysis by activating peroxisome proliferator-activating receptor-α (PPARα) in white adipose tissue (WAT). (biologists.org)
- Increased lipolysis in cancer cachexia has been shown in vivo ( 6 - 10 ) and results in decreased fat cell volume and size. (aacrjournals.org)
- The mechanism behind increased adipocyte lipolysis has recently been elucidated ( 6 ). (aacrjournals.org)
- It was shown that the expression of the adipocyte hormone-sensitive lipase (the rate-limiting enzyme of lipolysis) is increased in fat cells from subjects with cancer cachexia. (aacrjournals.org)
- In addition to congenital generalized lipodystrophy (described above), mutations in the CAV1 gene have been found to cause several other forms of lipodystrophy, which all involve a loss of adipose tissue. (medlineplus.gov)
- Because CAV1 gene mutations can cause several different forms of lipodystrophy, it is clear that it plays an essential role in the development of adipose tissue. (medlineplus.gov)
- Histological sections and global evaluation of gene expression after administration of clenbuterol in pigs identified profound changes in adipose cells. (biomedcentral.com)
- With clenbuterol stimulation, adipose cell volumes decreased and their gene expression profile changed, which indicate some metabolism processes have been also altered. (biomedcentral.com)
- In August 2000, MacDougald and his colleagues published a paper in Science, showing that Wnt10b gene activity repressed fat cell development in tissue cultures. (innovations-report.com)
- To determine the effect of the gene on adipose tissue development, we created an artificial sequence of DNA called a transgene linking Wnt10b to another gene called the FABP4 promoter, which is expressed only in adipose tissue," Longo says. (innovations-report.com)
- The formation of adipose tissue appears to be controlled by the adipose gene. (bionity.com)
- Although a large number of gene variants have been associated with fat distribution, they only explain a very small fraction of the phenotypic variability between people. (sdu.dk)
- The HOTAIR gene which shows both genetic and epigenetic regulation of lower body adipose tissue fat mass will be discussed. (sdu.dk)
- Gene and protein expression of uncoupling protein 1 (UCP1), a thermogenic protein, was up-regulated in Prip -KO brown adipocytes in thermoneutral or cold environments. (pubmedcentralcanada.ca)
- The analyses showed furthermore that Lsd1 maintains beige adipocytes by means of the target gene Pparα. (innovations-report.com)
- We investigated if the adipocyte-specific gene cell death-inducing DNA fragmentation factor-α-like effector A ( CIDEA ) could be involved. (aacrjournals.org)
- Adipocytes develop from adipoblasts, which derive from fibroblasts. (thefreedictionary.com)
- Tissue comprising mainly cells containing triglyceride (adipocytes). (wcrf.org)
- EAOTs decreased HFD-induced body weight, fat accumulation, serum levels of triglyceride, total cholesterol, and low-density lipoprotein cholesterol, while enhancing the serum high-density lipoprotein cholesterol level. (mdpi.com)
- Here, we report that a second enzyme, adipose triglyceride lipase (ATGL), catalyzes the initial step in triglyceride hydrolysis. (sciencemag.org)
- Only one previously undescribed enzyme fulfilled these requirements, and we named it "adipose triglyceride lipase" (ATGL). (sciencemag.org)
- Adipose tissue hypoxia is also found in humans. (frontiersin.org)
- As one of the most popular beverages consumed worldwide, tea has been shown in numerous clinical trials to affect body weight and fat metabolism in humans [ 7 ] and in rodents [ 8 ] fed high-fat diets (HFDs). (mdpi.com)
- In humans and chicken, adipose tissue is located beneath the skin and is also found around internal organs . (bionity.com)
- Metabolically active brown adipose in adult humans resides in interscapular, supraclavicular, cerivical, axillary, and paravertebral regions (Nedergaard et al. (stembook.org)
- White adipose tissue (WAT) contains white adipocytes and is the most common type found in adult humans 3,5 . (alpco.com)
- The third type of adipose tissue found in humans is beige adipose tissue. (alpco.com)
- In weight-stable humans, adipocytes contribute only little to total FA combustion ( 14 , 15 ). (aacrjournals.org)
- However, its main function is to be a reserve of lipids, which can be burned to meet the energy needs of the body. (bionity.com)
- Human fat tissue contains about 87% lipids. (bionity.com)
- Its main role is to store energy in the form of lipids , although it also cushions and insulates the body. (wikipedia.org)
- Before becoming official mature fat or "adipose" cells, potential lipids loiter for about 10 days as "pre" adipocytes. (bewellbuzz.com)
- White adipocytes contain a single large vacuole that stores lipids produced via lipogenesis and lipids from food consumed 6 . (alpco.com)
- Unlike white adipocytes, brown adipocytes contain many small vacuoles that hold lipids 3,5 . (alpco.com)
- Lipogenesis is the deposition of fat or accumulation of body fat. (ayurhelp.com)
- While oolong tea (OT) has been shown to induce weight loss and reduce fat accumulation, the mechanisms remain poorly defined, especially for aged OT. (mdpi.com)
- The model reproduces the fat accumulation due to excessive caloric intake observed in two clinical studies. (hindawi.com)
- Clenbuterol, a beta-agonist, can dramatically reduce pig adipose accumulation at high dosages. (biomedcentral.com)
- The objective of this research is to identify novel genes and physiological pathways that potentially facilitate clenbuterol induced reduction of adipose accumulation. (biomedcentral.com)
- Pig fat accumulation was reduced dramatically with clenbuterol treatment. (biomedcentral.com)
- Although the biological functions of the differentially expressed genes are not completely known, higher expressions of these molecules in adipose tissue might contribute to the reduction of fat accumulation. (biomedcentral.com)
- The apoR may be one of the critical molecules through which clenbuterol reduces fat accumulation. (biomedcentral.com)
- However the molecular level mechanism by which clenbuterol influences adipose accumulation is still not understood. (biomedcentral.com)
- In this study, the molecular level mechanism by which clenbuterol reduces fat accumulation was studied with cDNA microarray and proteomics techniques to analyze the fat tissue of Chinese miniature pigs treated with/without clenbuterol. (biomedcentral.com)
- Because the range of systems affected by adipose are so broad, it follows that over or under accumulation of this tissue can have vast and important medical consequences. (stembook.org)
- The distribution of fat in various parts of the body influences metabolism differently than the effects of total body fat stores or the fat under the skin -called subcutaneous adipose tissue, or SAT. The accumulation of fat inside the belly-the visceral fat compartment-seems to play a larger role in increasing the risk of inflammatory conditions, insulin resistance, diabetes, and cholesterol problems (Gasteyger). (selfgrowth.com)
- Subcutaneous tissue also regulates body temperature by making sure that your internal temperature isn't too high or too low. (verywellhealth.com)
- Insulin regulates the metabolism of carbohydrates and fats in the body," says the project's principal investigator, Academy of Finland Researcher Satu Pekkala, from the Faculty of Sport and Health Sciences at the University of Jyväskylä. (eurekalert.org)
- In 2012, the Kumamoto University research group became the first to show the mechanism by which the demethylating enzyme LSD1 regulates energy metabolism in adipocytes ( Nature Communications ). (phys.org)
- The results indicate that PRIP negatively regulates UCP1-mediated thermogenesis in brown adipocytes. (pubmedcentralcanada.ca)
- Collectively, adipocytes constitute the body's largest endocrine organ, producing an array of peptide hormones called adipokines ( 2 ). (sciencemag.org)
- But this concept changed profoundly within the last decades when adipose tissue has been identified as a potent endocrine organ with effects on metabolism and immunity. (frontiersin.org)
- Adipose tissue is the largest endocrine organ in the body. (diabetesjournals.org)
- Research over the past several decades examining adipokines and adipose tissue-liver crosstalk in energy metabolism has revealed that adipose tissue is a very important metabolically active endocrine organ 1 . (alpco.com)
- But how does this increased energy storage in fat cells (adipocytes) promote insulin resistance in muscles, the liver and elsewhere in the body? (nature.com)
- The liver prefers to use ketone bodies and other byproducts of metabolism as fuel. (reference.com)
- Chronic excessive caloric intake leads to the deposition of fat droplets in the liver. (medicalxpress.com)
- They develop insulin resistance, accumulate fat in both muscle and the liver, and are prone to type 2 diabetes. (asbmb.org)
- Each type of AT releases a different combination of these cell signaling molecules which enable the highly regulated crosstalk between adipose tissue and other organs such as the liver and brain to maintain energy balance 4 . (alpco.com)
- The size of adipocytes is determined by an individual's nutritional habits. (verywellhealth.com)
- The cytokines produced by adipocytes include several inflammatory markers such as interleukin (IL)-6, tumor necrosis factor (TNF)- α , and monocyte chemoattractant protein (MCP)-1 [ 4 ]. (hindawi.com)
- In females, pyocyanin caused robust reductions in body weight, adipose-specific AhR activation, and increased expression of inflammatory cytokines in differentiated adipocytes. (nih.gov)
- In line with these findings, in white adipose tissue, male offspring demonstrated hypertrophied adipocytes, enhanced proinflammatory cytokines, overactivation of components of the local renin-angiotensin system (RAS) and extracellular signal-regulated kinase 1/2 (ERK1/2), and inhibition of peroxisome proliferator-activated receptors (alpha and gamma). (springer.com)
- One way adipose tissue supports energy metabolism is through the generation and secretion of pro- and anti-inflammatory cytokines and hormones. (alpco.com)
- Cytokines and hormones exclusively produced by adipose tissue are referred to as adipokines. (alpco.com)
- Brown adipocytes express many, but not all, genes in common with white adipocytes (Rosen and MacDougald, 2006 ). (stembook.org)
- Researchers at the prestigious Mayo clinic in the US, have analyzed all the genes and proteins required for maximal fat burning in response to different types of exercise training. (lesmills.com)
- The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. (lu.se)
- Interestingly, two molecular signature of visceral adipocyte lineage, homebox genes HOXA5 and NR2F1, are up-regulated in a-SAT versus g-SAT by a 2.5 fold change. (biomedcentral.com)
- Regarding eWAT, CL316243 and OEA treatment elevated levels of the thermogenic factors PPARα and UCP1, reduced p38-MAPK phosphorylation, and promoted brown-like features in the white adipocytes: the mitochondrial ( Cox4i1 , Cox4i2 ) and BAT ( Fgf21 , Prdm16 ) genes were overexpressed in eWAT. (biologists.org)
- CONCLUSIONS There are major sex differences in insulin sensitivity in adipose tissue, particularly in the intra-abdominal depot, that are regulated by physiological levels of sex steroids. (diabetesjournals.org)
- Integrating miRNA and mRNA Expression Profiling Uncovers miRNAs Underlying Fat Deposition in Sheep. (thefreelibrary.com)
- Depending on its quantity and deposition, this stored fat can be good or bad. (bodybuilding.com)
- The amount of adipose tissue varies throughout the body. (verywellhealth.com)
- For comparison, a mouse with a normal amount of adipose tissue is shown on the right. (wikipedia.org)
- Consistent with the molecular changes, in HFD but not in ND rats, histological and immunohistochemistry-based analyses of WAT demonstrated the presence of small multilocular cells staining positively for uncoupling protein 1, indicating the emergence of brown-like adipocytes in WAT. (biomedsearch.com)
- Carbohydrate and protein consumed in the diet can be converted to fat. (ayurhelp.com)
- Amino acids from proteins are used for new protein synthesis or they can be converted to carbohydrate and fat. (ayurhelp.com)
- 3 ) report that a protein secreted by adipocytes acts as an anti-inflammatory adipokine, restraining the chronic inflammatory state and consequently improving insulin sensitivity. (sciencemag.org)
- A maternal low protein diet can reduce offspring birth weight which can lead to rapid weight gain of fat tissue during adolescence and into adulthood and increase the risk for insulin resistance. (usda.gov)
- Using obese-prone Sprague-Dawley rats fed 8% low protein (LP) or 20% normal protein (NP) diets for 3 wk prior to conception and throughout pregnancy and lactation followed by 12 wks of 10% normal fat (NF) or 45% high fat (HF) diet feeding, we investigated whether prenatal LP and postnatal HF diets affect beige adipocyte number and oxidative respiratory function in subcutaneous adipose tissue. (usda.gov)
- Background: Lipin 1 was identified as a nuclear protein required for adipose tissue development (1). (cellsignal.com)
- To observe this, the researchers marked the beige adipocytes with a fluorescent protein and reproduced their transformation to white adipose tissue. (innovations-report.com)
- and the regulation and unique properties of betaAR subtypes in brown and white adipocytes. (nih.gov)
- Considering that adipose tissue accounts for 10-20% of the body weight in males and 20-30% in females ( 1 ) one can well accept that this endocrine tissue has been studied more closely for its impact on body homeostasis and immune cell regulation. (frontiersin.org)
- However, how insulin action differs between males and females and how these differences account for a sex-specific regulation of adipose tissue development and function are largely unknown. (diabetesjournals.org)
- Finally, the endocrine regulation of abdominal visceral fat in comparison with the adipose tissue localized in other areas is presented. (nih.gov)
- The role of NGF in the regulation of body weight also requires further study. (aacrjournals.org)
- Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms. (lu.se)
- In this issue of the JCI, Ruiz de Azua and colleagues provide important insights into the regulation of adipocyte physiology by CB1. (jci.org)
- Recent studies have shown that the absence of a key transcription factor PR domain containing 16 (PRDM16) and fibroblast growth factor 21 (FGF21) are involved in conversion of precursor white adipocytes into more mitochondrial enriched and metabolically active beige adipocytes cause marked enlargement of the subcutaneous adipose tissue. (usda.gov)
- However, despite a dramatic increase in mitochondrial content, Ucp1 expression is undetectable in these adipocytes. (imperial.ac.uk)
- High-fat diet induces emergence of brown-like adipocytes in white adipose tissue of spontaneously hypertensive rats. (biomedsearch.com)
- In this study, we present evidence for high-fat diet (HFD)-induced emergence of brown-like adipocytes in white adipose tissue (WAT) of the spontaneously hypertensive rat (SHR). (biomedsearch.com)
- White adipose tissue. (ayurhelp.com)
- Dermal white adipose tissue (dWAT) was recently recognized for its potential to modify whole body metabolism. (nih.gov)
- thus, thickness is calculated based on signal intensity (referenced to a nearby white adipose tissue [WAT] depot) and related to thickness by a volume/thickness calculation (as described in Methods). (nih.gov)
- Brown adipose tissue plays an important role in thermogenesis in particular in neonates whereas the main adipose tissue present in adults belongs to the white adipose tissue. (frontiersin.org)
- Hence this review will focus on white adipose tissue, which is distributed throughout the body mainly at two different sites, the subcutaneous and the visceral compartment. (frontiersin.org)
- Two types of adipose tissue exist: white adipose tissue (WAT) and brown adipose tissue (BAT). (bionity.com)
- The layer of brown adipose tissue in this depot is often covered by a "frosting" of white adipose tissue, sometimes these two types of fat (brown and white) are hard to distinguish. (bionity.com)
- White adipose distribution in the body. (stembook.org)
- White adipose falls under two major classifications: visceral, or surrounding organs, and subcutaneous, under the skin. (stembook.org)
- white adipose tissue called white fat (WAT) and brown adipose tissue called brown fat(BAT). (pregnancyandlowbackpain.com)
- An important regulator of body and white adipose tissue weight is beige color adipocytes that are found in the subcutaneous, or under the skin, adipose tissue. (usda.gov)
- The two types of adipose tissue are white adipose tissue (WAT), which stores energy, and brown adipose tissue (BAT), which generates body heat. (wikipedia.org)
- Most adipose tissue is described as white adipose which functions in the storage of energy. (thoughtco.com)
- In mammals, adipose tissue exists as mainly as two different types: white adipose tissue (WAT) 3 and brown adipose tissue (BAT). (pubmedcentralcanada.ca)
- The group nevertheless was able to maintain Lsd1 production specifically in fat cells, and thereby reducing age-related transformation of beige to white adipose tissue. (innovations-report.com)
- Subcutaneous white adipose tissue (SWAT) is found under the skin throughout the body and has several functions including acting as a layer of insulation 1 . (alpco.com)
- Visceral white adipose tissue (VWAT) is located around the internal organs and is the main type of adipose tissue used for energy storage. (alpco.com)
- White adipose tissue browning can be initiated by a thermogenic stimulus, such as prolonged exposure to cold 5 . (alpco.com)
- CIDEA mRNA expression was assessed in s.c. white adipose tissue from 23 cancer cachexia patients, 17 weight-stable cancer patients, and 8 noncancer patients. (aacrjournals.org)
- Recent rodent studies suggest that FA oxidation in white adipose tissue is an additional important regulator of FA oxidation ( 13 ). (aacrjournals.org)
- The capacity of human white adipose tissue to oxidize FAs may increase markedly if the oxidative machinery is altered ( 14 ). (aacrjournals.org)
- adipose pO 2 decreases even further with increasing body fat percentage ( 10 ). (frontiersin.org)
- With aging, the volume of facial fat decreases and there is less supportive tissue to support the normal elasticity of the skin. (verywellhealth.com)
- For example, decreases in estrogen and increases in testosterone levels that occur during menopause are associated with loss of subcutaneous and gain of visceral fat and increase in insulin resistance ( 12 ). (diabetesjournals.org)
- Inhibition of ATGL markedly decreases total adipose acyl-hydrolase activity. (sciencemag.org)
- The number of beige adipocytes decreases when Lsd1 levels fall in aging adipose tissue. (innovations-report.com)
- Adipose connective tissue composed mainly of adipocytes (fat cells), coloured scanning electron micrograph (SEM). (sciencephoto.com)
- In anatomy , adipose tissue or fat is loose connective tissue composed of adipocytes. (bionity.com)
- Specialized connective tissue composed of adipocytes, or fat cells. (nap.edu)
- By selectively ablating fat tissue during M. tuberculosis infection, we directly tested the role of fat cell loss and adipose tissue physiology in regulating pulmonary pathology, bacterial burden, and immune status. (asm.org)
- Adipose, long studied as an energy storage depot and structural tissue, is a key player in maintaining energy homeostasis. (stembook.org)
- Adipose tissue (AT), also referred to as fat tissue, is found throughout the body and is vital for maintaining energy homeostasis 1 . (alpco.com)
- Each type of adipose tissue and adipocyte contributes differently to energy metabolism and overall homeostasis 3 . (alpco.com)
- In females, intra-abdominal PG adipocytes are more insulin-sensitive than SC adipocytes and more insulin-sensitive than male adipocytes from either depot. (diabetesjournals.org)
- White adipocytes are mainly located in the abdominal and subcutaneous areas of the body and highly adapted to store excess energy. (news-medical.net)
- Intra-abdominal fat includes mesenteric, omental, and perirenal fat deposits (see Figure 1 ). (stembook.org)
- A quadratic relationship between abdominal adipose weight (AAW) and light period suggested that long-term or short-term light exposure could decrease the amount of AAW. (nature.com)
- Intra-abdominal fat may be lost in some people, but preserved in others. (rarediseases.org)
- The relative contribution, in term of cardiovascular risk, of abdominal subcutaneous adipose tissue (a-SAT) is still controversial with studies showing both a detrimental effect and a protective role. (biomedcentral.com)
- These factors, together with high BMI, abdominal fat distribution, and enlarged adipocytes, may increase the risk of progression to T2DM after GDM. (gu.se)
- As a result of these and other changes, insufficient oxygenation, i.e., hypoxia occurs in adipose tissue under pathologically obese conditions. (frontiersin.org)
- From left, as fat cells (adipocytes) store more fat molecules and enlarge, they release several products that can modify the body's sensitivity to insulin. (nature.com)
- One significant commonality between brown and white adipocytes is the role of the master transcriptional regulator, PPARγ. (stembook.org)
- Additionally, evidence suggests that miRNAs regulate the formation of adipose tissue. (thefreelibrary.com)
- Her work has established that adipose tissue has an evolutionary history and many roles. (newscientist.com)
- Adipose tissue also surrounds internal organs and provides protection for these organs. (ayurhelp.com)
- Compared to white color fat cells in fat tissue that are associated with internal organs (called visceral adipose tissue), the beige color fat cells have higher numbers of mitochondria that are well known for their fat metabolizing ability. (usda.gov)
- Adipose lines organs and body cavities to protect organs and insulate the body against heat loss. (thoughtco.com)
- Adiponectin is produced by adipose tissue in inverse amounts to the fat mass and is one relevant mediator of the action of peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists. (diabetesjournals.org)
- The primary cells of adipose are adipocytes . (thoughtco.com)
- Thermogenic activity ceases and with it the cells' ability to burn fat. (innovations-report.com)
- Adipose connective tissue forms a thick layer under the skin in certain body areas and it functions as an insulating layer and as a reserve energy source. (sciencephoto.com)
- When this mechanism functions normally, it allows the body to stabilize its weight, preventing excessive gain - or loss - of fat. (medicalnewstoday.com)
- Additionally, through its endocrine functions, adipose impacts a wide variety of systems in the body. (stembook.org)
- Fat is distributed widely throughout the body and has different functions and growth properties depending on its location. (stembook.org)
- What Is the Preferred Fuel for Most Body Functions? (reference.com)
- These cells are grouped according to their functions in the body. (pregnancyandlowbackpain.com)
- Each tissue is composed of specialized adipocytes serving different functions. (sdu.dk)
- The adipose organ contributes to many fundamental biological functions: thermogenesis, lactation, immune responses and obviously energy balance and energy substrates partitioning. (biomedcentral.com)
- It functions as the conductor of your bodies orchestra. (bio-medicine.org)
- A) Anatomy of the visceral fat depot. (xenbase.org)
- The visceral fat can be subdivided into omental fat which surrounds the intestine superficially, retroperitoneal fat near the kidney and the mesenteric fat in close proximity to the intestine ( 4 ). (frontiersin.org)
- The adipose cells should gradually break down and be reabsorbed, leading to a reduced volume of visceral fat with a subsequent decrease of insulin resistance. (thefreedictionary.com)
- The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) announces a workshop focused on elucidating the roles of recently described brown and beige/brite fat in people. (nih.gov)
- Both brown and beige adipose burn fat and produce heat. (thoughtco.com)
- Lsd1 placed on white adipocytes (red) prevents the aging of beige adipose tissue (yellow). (innovations-report.com)
- With increasing age, beige adipocytes take on the morphology of white adipocytes. (innovations-report.com)
- Beige fat cells can be generated using cold treatment, for example. (innovations-report.com)
- The researchers demonstrated that Lsd1 is not only essential for the development of beige adipocytes, but also for the maintenance of beige fat cells. (innovations-report.com)
- Lsd1 prevents age-programmed loss of beige adipocytes. (innovations-report.com)
- Beige adipose tissue is found scattered throughout SWAT deposits and does not have its own dedicated fat pads 1,5 . (alpco.com)
- The adipocytes found in beige adipose tissue are commonly referred to as beige or brite adipocytes. (alpco.com)
- It has been shown that beige adipocytes have the ability to revert back to white adipocytes once the body reaches normal temperature again, then back to beige adipocytes upon more prolonged cold exposure 1 . (alpco.com)
- Adipose tissue is derived from preadipocytes. (wikipedia.org)