6-Aminonicotinamide: A vitamin antagonist which has teratogenic effects.Niacinamide: An important compound functioning as a component of the coenzyme NAD. Its primary significance is in the prevention and/or cure of blacktongue and PELLAGRA. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake.Pentose Phosphate Pathway: An oxidative decarboxylation process that converts GLUCOSE-6-PHOSPHATE to D-ribose-5-phosphate via 6-phosphogluconate. The pentose product is used in the biosynthesis of NUCLEIC ACIDS. The generated energy is stored in the form of NADPH. This pathway is prominent in tissues which are active in the synthesis of FATTY ACIDS and STEROIDS.Teratogens: An agent that causes the production of physical defects in the developing embryo.Abnormalities, Drug-Induced: Congenital abnormalities caused by medicinal substances or drugs of abuse given to or taken by the mother, or to which she is inadvertently exposed during the manufacture of such substances. The concept excludes abnormalities resulting from exposure to non-medicinal chemicals in the environment.HexosephosphatesGlucose: 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.Phosphogluconate Dehydrogenase: An enzyme of the oxidoreductase class that catalyzes the reaction 6-phospho-D-gluconate and NADP+ to yield D-ribulose 5-phosphate, carbon dioxide, and NADPH. The reaction is a step in the pentose phosphate pathway of glucose metabolism. (From Dorland, 27th ed) EC 1.1.1.43.Glucosephosphate DehydrogenaseSalmonella typhimurium: A serotype of Salmonella enterica that is a frequent agent of Salmonella gastroenteritis in humans. It also causes PARATYPHOID FEVER.Nicotinamidase: An enzyme that catalyzes the hydrolysis of nicotinamide to nicotinate and ammonia. EC 3.5.1.19.Mutation: Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.Salmonella: A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that utilizes citrate as a sole carbon source. It is pathogenic for humans, causing enteric fevers, gastroenteritis, and bacteremia. Food poisoning is the most common clinical manifestation. Organisms within this genus are separated on the basis of antigenic characteristics, sugar fermentation patterns, and bacteriophage susceptibility.meta-Aminobenzoates: Aminobenzoate derivatives that contain an amino group attached to carbon number 3 or 5 of the benzene ring structure.Glycolysis: A metabolic process that converts GLUCOSE into two molecules of PYRUVIC ACID through a series of enzymatic reactions. Energy generated by this process is conserved in two molecules of ATP. Glycolysis is the universal catabolic pathway for glucose, free glucose, or glucose derived from complex CARBOHYDRATES, such as GLYCOGEN and STARCH.Deoxyglucose: 2-Deoxy-D-arabino-hexose. An antimetabolite of glucose with antiviral activity.Metabolic Syndrome X: A cluster of metabolic risk factors for CARDIOVASCULAR DISEASES and TYPE 2 DIABETES MELLITUS. The major components of metabolic syndrome X include excess ABDOMINAL FAT; atherogenic DYSLIPIDEMIA; HYPERTENSION; HYPERGLYCEMIA; INSULIN RESISTANCE; a proinflammatory state; and a prothrombotic (THROMBOSIS) state. (from AHA/NHLBI/ADA Conference Proceedings, Circulation 2004; 109:551-556)Stem Cells: Relatively undifferentiated cells that retain the ability to divide and proliferate throughout postnatal life to provide progenitor cells that can differentiate into specialized cells.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.RNA, Catalytic: RNA that has catalytic activity. The catalytic RNA sequence folds to form a complex surface that can function as an enzyme in reactions with itself and other molecules. It may function even in the absence of protein. There are numerous examples of RNA species that are acted upon by catalytic RNA, however the scope of this enzyme class is not limited to a particular type of substrate.Cell Proliferation: All of the processes involved in increasing CELL NUMBER including CELL DIVISION.Stem Cell Transplantation: The transfer of STEM CELLS from one individual to another within the same species (TRANSPLANTATION, HOMOLOGOUS) or between species (XENOTRANSPLANTATION), or transfer within the same individual (TRANSPLANTATION, AUTOLOGOUS). The source and location of the stem cells determines their potency or pluripotency to differentiate into various cell types.Embryonic Stem Cells: Cells derived from the BLASTOCYST INNER CELL MASS which forms before implantation in the uterine wall. They retain the ability to divide, proliferate and provide progenitor cells that can differentiate into specialized cells.Cell Culture Techniques: Methods for maintaining or growing CELLS in vitro.Pluripotent Stem Cells: Cells that can give rise to cells of the three different GERM LAYERS.Feeder Cells: Cells used in COCULTURE TECHNIQUES which support the growth of the other cells in the culture. Feeder cells provide auxillary substances including attachment substrates, nutrients, or other factors that are needed for growth in culture.Cell Differentiation: Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.Brenner Tumor: A smooth, solid or cystic fibroepithelial (FIBROEPITHELIAL NEOPLASMS) tumor, usually found in the OVARIES but can also be found in the adnexal region and the KIDNEYS. It consists of a fibrous stroma with nests of epithelial cells that sometimes resemble the transitional cells lining the urinary bladder. Brenner tumors generally are benign and asymptomatic. Malignant Brenner tumors have been reported.Astrocytes: A class of large neuroglial (macroglial) cells in the central nervous system - the largest and most numerous neuroglial cells in the brain and spinal cord. Astrocytes (from "star" cells) are irregularly shaped with many long processes, including those with "end feet" which form the glial (limiting) membrane and directly and indirectly contribute to the BLOOD-BRAIN BARRIER. They regulate the extracellular ionic and chemical environment, and "reactive astrocytes" (along with MICROGLIA) respond to injury.Cerebellum: The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.Purkinje Cells: The output neurons of the cerebellar cortex.Ganciclovir: An ACYCLOVIR analog that is a potent inhibitor of the Herpesvirus family including cytomegalovirus. Ganciclovir is used to treat complications from AIDS-associated cytomegalovirus infections.Thymidine Kinase: An enzyme that catalyzes the conversion of ATP and thymidine to ADP and thymidine 5'-phosphate. Deoxyuridine can also act as an acceptor and dGTP as a donor. (From Enzyme Nomenclature, 1992) EC 2.7.1.21.Mice, Transgenic: Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Glyceraldehyde-3-Phosphate Dehydrogenases: Enzymes that catalyze the dehydrogenation of GLYCERALDEHYDE 3-PHOSPHATE. Several types of glyceraldehyde-3-phosphate-dehydrogenase exist including phosphorylating and non-phosphorylating varieties and ones that transfer hydrogen to NADP and ones that transfer hydrogen to NAD.Phosphates: Inorganic salts of phosphoric acid.NADP: Nicotinamide adenine dinucleotide phosphate. A coenzyme composed of ribosylnicotinamide 5'-phosphate (NMN) coupled by pyrophosphate linkage to the 5'-phosphate adenosine 2',5'-bisphosphate. It serves as an electron carrier in a number of reactions, being alternately oxidized (NADP+) and reduced (NADPH). (Dorland, 27th ed)NADPH Oxidase: A flavoprotein enzyme that catalyzes the univalent reduction of OXYGEN using NADPH as an electron donor to create SUPEROXIDE ANION. The enzyme is dependent on a variety of CYTOCHROMES. Defects in the production of superoxide ions by enzymes such as NADPH oxidase result in GRANULOMATOUS DISEASE, CHRONIC.Tolonium Chloride: A phenothiazine that has been used as a hemostatic, a biological stain, and a dye for wool and silk. Tolonium chloride has also been used as a diagnostic aid for oral and gastric neoplasms and in the identification of the parathyroid gland in thyroid surgery.Bullying: Aggressive behavior intended to cause harm or distress. The behavior may be physical or verbal. There is typically an imbalance of power, strength, or status between the target and the aggressor.Software: Sequential operating programs and data which instruct the functioning of a digital computer.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.Communication: The exchange or transmission of ideas, attitudes, or beliefs between individuals or groups.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.ToluidinesPulmonary Artery: The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.Superoxides: Highly reactive compounds produced when oxygen is reduced by a single electron. In biological systems, they may be generated during the normal catalytic function of a number of enzymes and during the oxidation of hemoglobin to METHEMOGLOBIN. In living organisms, SUPEROXIDE DISMUTASE protects the cell from the deleterious effects of superoxides.Hydroxyeicosatetraenoic Acids: Eicosatetraenoic acids substituted in any position by one or more hydroxy groups. They are important intermediates in a series of biosynthetic processes leading from arachidonic acid to a number of biologically active compounds such as prostaglandins, thromboxanes, and leukotrienes.Constriction: The act of constricting.Mitochondria: Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed)Superoxide Dismutase: An oxidoreductase that catalyzes the reaction between superoxide anions and hydrogen to yield molecular oxygen and hydrogen peroxide. The enzyme protects the cell against dangerous levels of superoxide. EC 1.15.1.1.

Effect of 6-aminonicotinamide and other protein synthesis inhibitors on formation of platinum-DNA adducts and cisplatin sensitivity. (1/52)

The present study was undertaken to examine the mechanistic basis for the recent observation that the pyridine nucleotide derivative 6-aminonicotinamide (6AN, NSC 21206) enhances the accumulation and resulting cytotoxicity of cisplatin in a variety of tumor cell lines. When A549 lung cancer cells or K562 leukemia cells were treated with 62.5 microM 6AN for 21 h and then pulse-labeled with [(35)S]methionine for 1 h, increased labeling of five polypeptides, one of which corresponded to a M(r) approximately 78,000 glucose-regulated protein (GRP78), was observed. Two subsequent observations, however, suggested that up-regulation of these polypeptides was unlikely to explain the interaction between 6AN and cisplatin: 1) the concentration of 6AN required to induce GRP78 was 4-fold higher than the dose required to sensitize cells to cisplatin; and 2) simultaneous treatment of cells with 6AN and cycloheximide prevented the increase in GRP78 but not the sensitizing effect of 6AN. On the contrary, treatment with the protein synthesis inhibitors cycloheximide, anisomycin, or puromycin as well as prolonged exposure to the RNA synthesis inhibitor actinomycin D mimicked the biochemical modulating effects of 6AN on cisplatin action. Conversely, 6AN inhibited protein synthesis, whereas 18 6AN analogs that failed to enhance Pt-DNA adducts and cisplatin cytotoxicity failed to inhibit protein synthesis. These observations are consistent with a model in which 6AN and other inhibitors of protein synthesis act as modulating agents by increasing cisplatin accumulation, thereby enhancing the formation of Pt-DNA adducts and subsequent cisplatin-induced cell death.  (+info)

Grp78 is involved in retention of mutant low density lipoprotein receptor protein in the endoplasmic reticulum. (2/52)

The low density lipoprotein (LDL) receptor is responsible for removing the majority of the LDL cholesterol from the plasma. Mutations in the LDL receptor gene cause the disease familial hypercholesterolemia (FH). Approximately 50% of the mutations in the LDL receptor gene in patients with FH lead to receptor proteins that are retained in the endoplasmic reticulum (ER). Misfolding of mutant LDL receptors is a probable cause of this ER retention, resulting in no functional LDL receptors at the cell surface. However, the specific factors and mechanisms responsible for retention of mutant LDL receptors are unknown. In the present study we show that the molecular chaperone Grp78/BiP co-immunoprecipitates with both the wild type and two different mutant (W556S and C646Y) LDL receptors in lysates obtained from human liver cells overexpressing wild type or mutant LDL receptors. A pulse-chase study shows that the interaction between the wild type LDL receptor and Grp78 is no longer detectable after 2(1/2) h, whereas it persists for more than 4 h with the mutant receptors. Furthermore, about five times more Grp78 is co-immunoprecipitated with the mutant receptors than with the wild type receptor suggesting that Grp78 is involved in retention of mutant LDL receptors in the ER. Overexpression of Grp78 causes no major alterations on the steady state level of active LDL receptors at the cell surface. However, overexpression of Grp78 decreases the processing rate of newly synthesized wild type LDL receptors. This indicates that the Grp78 interaction is a rate-limiting step in the maturation of the wild type LDL receptor and that Grp78 may be an important factor in the quality control of newly synthesized LDL receptors.  (+info)

Inhibitors of pentose phosphate pathway cause vasodilation: involvement of voltage-gated potassium channels. (3/52)

Cytosolic reducing cofactors, such as NADPH and NADH, are thought to regulate vascular smooth muscle ion channel activity and vascular tone. In this study, the effects of pentose phosphate pathway (PPP) inhibitors, 6-aminonicotinamide (6-AN), epiandrosterone (EPI), and dehydroepiandrosterone (DHEA), on vascular tone were studied in isolated perfused lungs and pulmonary artery (PA) and aortic rings from rats. In addition, effects of 6-AN on voltage-gated K(+) (K(v)) current in PA smooth muscle cells (SMCs) were also examined. Pretreatment of lungs with 6-AN and EPI reduced the pressor response to acute hypoxia and decreased tissue NADPH levels. 6-AN, EPI, and DHEA relaxed isolated PA and aortic rings precontracted with 30 mM KCl in a dose-dependent manner. The PPP inhibitor-induced PA relaxations were reduced in PA rings precontracted with 80 mM KCl but not by pretreatment with nitro-L-arginine or endothelial removal. Pretreatment of PA rings with tetraethylammonium chloride or 4-aminopyridine caused rightward shifts of concentration-relaxation curves for 6-AN, EPI, and DHEA. In contrast, glybenclamide, charybdotoxin, or apamin did not inhibit the relaxant effects of 6-AN, EPI, and DHEA. 6-AN caused an increase in K(v) current in PASMC. These results indicate that reduction of NADPH by the PPP inhibitors causes vasodilation at least partly through opening of K(v) channels.  (+info)

Up-regulation of glucose metabolism during male pronucleus formation determines the early onset of the s phase in bovine zygotes. (4/52)

After in vitro fertilization with spermatozoa from bulls with high in vitro fertility, a beneficial paternal effect is manifested during the G1 phase of the first cell cycle. This benefit determines an earlier onset of the first S phase, and then a successful morula-blastocyst transition 7 days later. We hypothesized that the origin of the paternal effect could be a shift of the metabolism of the fertilized oocyte, because in mice, sperm decondensation is responsible for a dramatic increase in glucose metabolism. In this study we investigated the interaction between both pronuclei and compared glycolysis and pentose phosphate pathway (PPP) activities in bovine oocytes fertilized with spermatozoa from bulls of high or low fertility. Here we demonstrate that male pronucleus formation is necessary for the onset of the S phase in the female pronucleus, and that the component promoting an early S phase in both pronuclei is metabolic and linked to an up-regulation of the PPP during the male pronucleus formation. This long-lasting paternal effect is more evidence of the important role of epigenetic control during early embryo development.  (+info)

Pentose phosphate pathway coordinates multiple redox-controlled relaxing mechanisms in bovine coronary arteries. (5/52)

Pentose phosphate pathway (PPP) inhibitors, 6-aminonicotinamide (6-AN) and epiandrosterone (Epi), were employed to examine whether changes in NADP(H) redox regulates contractile force in endothelium-removed bovine coronary arteries (BCAs). 6-AN (0.01-5 mM) or Epi (1-500 microM) elicited dose-dependent relaxation in BCAs contracted with 30 mM KCl, 0.1 microM U-44619, and endothelin-1 but not with phorbol 12,13-dibutyrate, a protein kinase C activator that causes Ca2+-independent contraction. Relaxation to PPP inhibition was associated with oxidation of NADPH and glutathione (GSH). Relaxation to 6-AN was not mediated by H2O2, because it was not altered by hypoxia or the peroxide scavenger ebselen (100 microM). The thiol reductant DTT (3 mM) attenuated the relaxation to 6-AN and Epi by 30-40%. Inhibition of glycolysis or mitochondrial electron transport did not elicit relaxation in BCAs contracted with 30 mM KCl, suggesting these pathways may not be involved in relaxation elicited by PPP inhibition. High doses of K+ channel blockers [e.g., TEA (10 mM) and 4-aminopyridine (10 mM)] only partially inhibited the relaxation to 6-AN. On the basis of changes in the fura-2 fluorescence ratio, 6-AN and Epi appeared to markedly reduce intracellular Ca2+. Thus PPP inhibition oxidizes NADPH and GSH and appears to activate a novel coordination of redox-controlled relaxing mechanisms in BCAs mediated primarily through decreasing intracellular Ca2+.  (+info)

Biochemical modulation of tumor cell energy: regression of advanced spontaneous murine breast tumors with a 5-fluorouracil-containing drug combination. (6/52)

This report describes a highly active chemotherapeutic drug combination, consisting of N-(phosphonacetyl)-L-aspartate plus 6-methylmercaptopurine riboside plus 6-aminonicotinamide plus 5-fluorouracil, in CD8F1 mice bearing spontaneous, autochthonous, breast tumors or first-passage advanced transplants of these spontaneous tumors. The combination and sequence of administration of these drugs were selected on the basis of known potentiating biochemical interactions. High performance liquid chromatography and nuclear magnetic resonance spectroscopy measurements of biochemical changes resulting from treatment with N-(phosphonacetyl)-L-aspartate plus 6-methylmercaptopurine riboside plus 6-aminonicotinamide indicated a severe depletion of cellular energy levels in the treated tumors. 6-Aminonicotinamide produced a severe block of the pentose shunt, and 5-fluorouracil severely inhibited both thymidylate synthase and thymidine kinase in the treated tumors. This quadruple drug combination, administered on a 10-11-day schedule, produced an impressive partial tumor regression rate of 67% of large, spontaneous, autochthonous, murine breast tumors and a tumor regression rate of 74% of first-passage transplants of the spontaneous breast tumors.  (+info)

Insulin stimulates glucose metabolism via the pentose phosphate pathway in Drosophila Kc cells. (7/52)

Drosophila melanogaster has become a prominent and convenient model for analysis of insulin action. However, to date very little is known regarding the effect of insulin on glucose uptake and metabolism in Drosophila. Here we show that, in contrast to effects seen in mammals, insulin did not alter [(3)H]2-deoxyglucose uptake and in fact decreased glycogen synthesis ( approximately 30%) in embryonic Drosophila Kc cells. Insulin significantly increased ( approximately 1.5-fold) the production of (14)CO(2) from D-[1-(14)C]glucose while the production of (14)CO(2) from D-[6-(14)C]glucose was not altered. Thus, insulin-stimulated glucose oxidation did not occur via increasing Krebs cycle activity but rather by stimulating the pentose phosphate pathway. Indeed, inhibition of the oxidative pentose phosphate pathway by 6-aminonicotinamide abolished the effect of insulin on (14)CO(2) from D-[U-(14)C]glucose. A corresponding increase in lactate production but no change in incorporation of D-[U-(14)C]glucose into total lipids was observed in response to insulin. Glucose metabolism via the pentose phosphate pathway may provide an important source of 5'-phosphate for DNA synthesis and cell replication. This novel observation correlates well with the fact that control of growth and development is the major role of insulin-like peptides in Drosophila. Thus, although intracellular signaling is well conserved, the metabolic effects of insulin are dramatically different between Drosophila and mammals.  (+info)

Effects of small molecules on chaperone-mediated autophagy. (8/52)

Autophagy, including macroautophagy (MA), chaperone-mediated autophagy (CMA), crinophagy, pexophagy and microautophagy, are processes by which cells select internal components such as proteins, secretory vesicles, organelles, or foreign bodies, and deliver them to lysosomes for degradation. MA and CMA are activated during conditions of serum withdrawal in cell culture and during short-term and prolonged starvation in organisms, respectively. Although MA and CMA are activated under similar conditions, they are regulated by different mechanisms. We used pulse/chase analysis under conditions in which most intracellular proteolysis is due to CMA to test a variety of compounds for effects on this process. We show that inhibitors of MA such as 3-methyladenine, wortmannin, and LY294002 have no effect on CMA. Protein degradation by MA is sensitive to microtubule inhibitors such as colcemide and vinblastine, but protein degradation by CMA is not. Activators of MA such as rapamycin also have no effect on CMA. We demonstrate that CMA, like MA, is inhibited by protein synthesis inhibitors anisomycin and cycloheximide. CMA is also partially inhibited when the p38 mitogen activated protein kinase is blocked. Finally we demonstrate that the glucose-6-phophate dehydrogenase inhibitor, 6-aminonicotinamide, and heat shock protein of 90 kilodaltons inhibitor, geldanamycin, have the ability to activate CMA.  (+info)

The treatment of rats for 4 h with 6-aminonicotinamide (60 mg kg -1) resulted in an 180-fold increase in the concentration of 6-phospho-gluconate in their brains; glucose increased 2.6-fold and glucose 6-phosphate, 1.7-fold. Moreover, lactate decreased by 20%, glutamate by 8% and y-aminobutyrate by 12 %, and aspartate increased by 10%. No significant changes were found in glutamine and citrate. In blood, 6-phosphogluconate increased 5-fold; glucose, 1.4-fold and glucose 6-phosphate, 1.8-fold. The metabolism of glucose in the rat brain, via both the Embden-Meyerhof pathway and the hexose monophosphate shunt, was investi-gated by injecting [U-14C]glucose or [2-14C]glucose, and that via the hexose monophosphate shunt alone by injecting [3, 4-14C]glucose. The total radioactive yield of amino acids in the rat brain was 5.63 μmol at 20 min after injection of [U-14C]glucose, or 5.82 μmol after injection of [2-14C]glucose; by contrast, it was 0.62 μmol after injection of [3, 4-14C]glucose. The ...
329-89-5 - ZLWYEPMDOUQDBW-UHFFFAOYSA-N - 6-Aminonicotinamide - Similar structures search, synonyms, formulas, resource links, and other chemical information.
TY - JOUR. T1 - 6-Aminonicotinamide-resistant mutants of Salmonella typhimurium. AU - Hughes, K. T.. AU - Cookson, B. T.. AU - Ladika, D.. AU - Olivera, B. M.. AU - Roth, J. R.. PY - 1983. Y1 - 1983. N2 - Resistance to the nicotinamide analog 6-aminonicotinamide has been used to identify the following three new classes of mutants in pyridine nucleotide metabolism. pncX mutants have Tn10 insertion mutations near the pncA locus which reduce but do not eliminate the pncA product, nicotinamide deamidase. nadB (6-aminonicotinamide-resistant) mutants have dominant alleles of the nadB gene, which we propose are altered in feedback inhibition of the nadB enzyme, L-aspartate oxidase. Many of these mutants also exhibit a temperature-sensitive nicotinamide requirement phenotype. nadD mutants have mutations that affect a new gene involved in pyridine nucleotide metabolism. Since a high proportion of nadD mutations are temperature-sensitive lethal mutations, this appears to be an essential gene for NAD and ...
To our knowledge, this study first demonstrated in vivo evidence that inflammatory responses in pregnant mice upon activated Nod1 signaling severely affected their fetal growth and survival. The present study also clarified that Nod1-associated inflammatory responses in both maternal and fetal vascular tissues contributed to the pathogeneses of IUGR and IUFD that were mimicked by maternal injection of FK565.. Nod1 is a member of the NLR family that is ubiquitously expressed in various tissues. Nod1 detects dipeptide γ-D-Glu-meso-diaminopimelic acid (iE-DAP), which is present in the peptidoglycan of most Gram-negative bacteria such as Escherichia coli and certain Gram-positive bacteria (11, 12, 23). DAP-containing bacteria release Nod1 ligands into the environment, and Nod1 ligands are stable in higher temperatures or under acidic or basic conditions (23). It has been suggested that the chronic stimulation of the host immune system by various bacteria present in the environment and food may be ...
The fetal and postnatal development of binding sites for [3H]nicotine was examined in brain regions of normal rats and rats whose mothers received nicotine injections or infusions, starting before fetal implantation (gestational day 4) and continuing to gestational day 20. The normal ontogenetic pattern of binding indicated a small but detectable concentration of sites during late gestation, and a substantial increase after birth, primarily during the period in which the majority of cholinergic synapses is forming. The adult pattern of regional selectivity of binding capabilities, namely midbrain + brainstem greater than cerebral cortex much greater than cerebellum, was not present at birth, but rather developed over the ensuing 3 weeks postpartum. Fetal exposure to nicotine produced an elevation in binding detectable during the course of drug exposure (gestational day 18), a finding similar to nicotines effects in mature brain. However, examination of the subsequent developmental pattern of ...
Introduction: A single course of corticosteroid reduces intracranial hemorrhage in preterm infants. The mechanism of protection is unclear. Glial fibrillary acidic protein (GFAP), expressed by astrocytes, is regulated by glucosteroids and is an important component of the cells forming the blood brain barrier. We have evaluated the effect of prenatal corticosteroid upon ovine GFAP.. Methods: Date-mated ewes were studied in two protocols and lambs delivered on day 125 or 145 (term = 150). In the maternal injection protocol (n = 36) ewes were administered saline, single or repeated injections of corticosteroid. In the fetal injection protocol (n = 48) direct ultrasound-guided fetal injections of saline, single or repeated corticosteroid were administered, and an additional control group did not receive fetal injections. Optic nerve GFAP immunohistochemistry was performed and quantified.. Results: At 125 days, repeated, but not single, administration of corticosteroid, by either maternal or fetal ...
NEW Practitioner-only formulation. Source of chromium. Helps prevent dietary chromium and nicotinamide deficiency.. Chromium assists glucose metabolism and helps maintain healthy blood sugar and cholesterol in healthy individuals.. Nicotinamide and chromium aid protein, fat and carbohydrate metabolism.. Vitamins and minerals can only be of assistance if dietary intake is inadequate.. Each capsule contains: ...
1D7L: Structure-function correlations of the reaction of reduced nicotinamide analogues with p-hydroxybenzoate hydroxylase substituted with a series of 8-substituted flavins.
To elucidate the formation of early thalamocortical synapses we recorded optical images with voltage-sensitive dyes from the cerebral cortex of prenatal rats by selective thalamic stimulation of thalamocortical slice preparations. At embryonic day (E) 17, thalamic stimulation elicited excitation that rapidly propagated through the internal capsule to the cortex. These responses lasted less than 15 ms, and were not affected by the application of glutamate receptor antagonists, suggesting that they might reflect presynaptic fiber responses. At E18, long-lasting (more than 300 ms) responses appeared in the internal capsule and in subplate. By E19, long-lasting responses increased in the cortical subplate. By E21, shortly before birth, the deep cortical layers were also activated in addition to the subplate. These long-lasting responses seen in the internal capsule and subplate were blocked by the antagonist perfusion, but the first spike-like responses still remained. The laminar location of the responses
Supplementary MaterialsSuppl Fig. ovary (CHO) cells to measure sulfate uptake activity. Outcomes We discovered a hitherto undescribed mutation, T512K, homozygous in the affected topics and heterozygous in both parents and in the unaffected sister. T512K was after that defined as second pathogenic allele in the seven Finnish DTD topics. Expression tests confirmed pathogenicity. Conclusions DLCD is allelic towards the other disorders indeed. T512K is another uncommon Finnish mutation that leads to DLCD at homozygosity and in DTD when compounded using the milder, common Finnish mutation. In 1972, de la Chapelle described a grouped family members with two siblings suffering from a definite and previously unrecognised lethal skeletal dysplasia. The TAK-375 enzyme inhibitor scientific phenotype was characterised by serious micromelia, little thorax, cleft palate, and bilateral clubfoot; radiologically, the main features were short and bowed limb bones, unusually hypoplastic ulna and fibula, and spinal ...
The term squitten is generally used to refer to cats with the condition radial hypoplasia (underdeveloped radius bones) or foreleg micromelia (small forelegs) and related conditions known as radial aplasia (absent radius bones), radial agenesis (failure of radius bones to form) that produces stunted forelegs. The mutation sometimes occurs in the random-breeding population, particularly in inbred populations where recessive genes may be exhibited. Such cats have also been called twisty cats; In the late 1990s, several were deliberately bred at Karma Farms, a horse farm and cattery in Marshall, Texas,[3][4] resulting in a public outcry against the operators of the farm. Radial hypoplasia is related to one form of polydactyly, sometimes called patty feet or hamburger feet by cat lovers to distinguish them from thumb cat polydactyls. Ordinary mitten cat polydactyls are not affected.[5][6] Cats with radial hypoplasia or similar mutations often sit on their rump with their forelegs unable to touch the ...
The BinaxNOW® G6PD Test is a visual screening test used for differentiating normal from deficient G6PD activity levels in whole blood and is intended to aid in the identification of people with G6PD deficiency.
is In no way … intended to be a linear history of discoveries, techniques, or famous men (p. 4). It is a pity, therefore, that the title is so misleading, since this book is not a history of the practice and science of anaesthesia in Victorian Britain either. Aspects of... or A Consideration of … would have been a fairer description. Nor, although it is one in the series entitled Science, Technology and Medicine in Modern History, is there a great deal of science or medicine, and technology is hardly mentioned at all. Thus such neglected technological topics as the contribution of the commercial chemists and instrument makers, still of great relevance today, do not feature. Instead, taking Pernicks treatise on the early years of anaesthesia in the United States as an example (1), Dr. Snow has used the history of anaesthesia to illuminate three areas of current historical interest: the relationship between medical practice and science; the dynamics which structured patient-doctor ...
Hypochondroplasia (HCH) is a developmental disorder caused by an autosomal dominant genetic defect in the fibroblast growth factor receptor 3 gene (FGFR3) that results in a disproportionately short stature, micromelia, and a head that appears large in comparison with the underdeveloped portions of the body, it is classified as short-limbed dwarfism. Individuals affected by this disorder appear normal at birth. As the infant grows, however, their arms and legs do not develop properly and their body becomes thicker and shorter than normal The following are characteristics consistent with this condition: Brachydactyly syndrome Short stature Micromelia Skeletal dysplasia Abnormality of femur In terms of cause this disorder is transmitted as an autosomal dominant trait affecting the FGFR3 gene on chromosome 4p16.3, there is currently no cure for this condition. This disorder results from mutations in the proximal tyrosine kinase domain of the FGFR3 gene. This gene plays an important role in embryonic ...
The main clinical features of this metaphyseal chondrodysplasia are severe growth retardation, predominantly lower extremity micromelia, knee flexion contractures, and severe brachydactyly. The radiologic appearance of the knees is considered specific, with the distal femoral and the proximal tibial epiphyses embedding themselves in their corresponding metaphyses, which results in the typical cup shape on x-ray. The name acroscyphodysplasia refers to this characteristic cup-shaped (scyphus = cup) anomaly. Premature epiphyseal-metaphyseal fusion and gross deformation of the femoral condyles can occur. The distal femoral metaphyses appear wedge-shaped. The femoral diaphyses are short and broad. Additional features include progressive bilateral coxae valgae, bowed and/or short, stubby tibiae with cone-shaped metaphyses and varus deformity of the tibiotalar joint. Overall, the upper extremities are much less affected with only mild deformation of the long bones. However, the shortening of the hand ...
Partial discharge measurement is a common method for monitoring and diagnostics of power transformers, and can detect insulation malfunctions before they lead to failure. Different parameters extracted from the measured PD activity can be correlated to the PD source, and as a result it is possible to identify the PD source by analyzing the PD activity.. In this thesis, possible defects that could cause harmful PDs in transformers were investigated. These defects include corona in oil, a void in pressboard, a metal object at floating potential, surface discharge in oil, a free bubble in oil and small free metallic particles in oil. The characteristics of disturbing discharge sources were analyzed, like corona in air, surface discharge in air, and discharge from an unearthed object near to the test setup.. The PD activity was recorded both in the time domain and phase domain, and possible characteristics for each PD pattern and waveform were extracted in order to find the best characteristic for ...
The committee will recruit, plan, organize, evaluate and document all internal professional development activities. The committee will meet regularly throughout the academic year and submit a schedule of PD activities for the fall and spring breaks. The committee will work with other college units to ensure documentation and evaluation of all PD activities. The committee will review requests for external PD activities submitted under the Competitive Travel PD Guidelines. The committee also will recommend changes in the PD process for the next academic year. The committee will carry out any related charges from the Professional Development Coordinator or the Provost. ...
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Get information, facts, and pictures about Pentose phosphate pathway at Encyclopedia.com. Make research projects and school reports about Pentose phosphate pathway easy with credible articles from our FREE, online encyclopedia and dictionary.
Pentose Phosphate Pathway. The pentose phosphate pathway is also called as the phosphogluconate pathway or hexose monophosphate shunt.
Bommer, Guido. Protecting Glycolysis and the Pentose Phosphate Pathway from Metabolic Side-Products.Keystone Conference: Novel Frontiers in Understanding Tumor Metabolism (Banff, Canada, du 21/02/2016 au 25/02/2016 ...
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Background: Achondrogenesis type II is a lethal form of osteochondrodysplasia characterized by short trunk, disproportionately large head, prominent forehead, micrognathia, extreme micromelia, anasarca, large abdomen and poor ossification of the bones. The children with achondrogenesis are usually born premature, or die in the neonatal period mostly from respiratory failure. We report the case of a live term newborn infant with achondrogenesis type II who died shortly after birth. Methods: We report a case of achondrogenesis type II in a live male newborn. Results: We report the case of a term male infant delivered to a 24-year-old woman with a chondrogenesis type II confirmed radiologically but died at age 5 days. Conclusion: Whenever a skeletal dysplasia in a fetal dwarfism is suspected, a proper work-up plan should be done to evaluate family history. A clinical, radiographic and histopathologic examination, should be done and confirmed by genetic study. Following evidence-based diagnosis, patients
Pentose phosphate pathway can define as a metabolic pathway that occurs in all living organisms which utilize the first intermediate product of glycolysis i.e. Glucose 6-phosphate for the production of NADPH (by the reduction of coenzyme NADP) and a Pentose sugar.
Antimetabolite A substance bearing a close structural resemblance to one required for normal physiological functioning, and exerting its effect by interfering with the utilization of the essential metabolite. It competes with, replaces, or antagonizes a particular metabolite; for example, ethionine is an antimetabolite of methionine.methotrexatefolic acidcancerCancercancercancer
The pentose phosphate pathway provides a deep look into a stunning array of essential roles for glucose. In it, glucose becomes the source of NADPH, used for antioxidant defense, detoxification, recycling of nutrients like vitamin K and folate, and the anabolic synthesis of fatty acids, cholesterol, neurotransmitters, and nucleotides. At the same time, glucose also becomes the source of 5-carbon sugars, used structurally in DNA, RNA, and energy carriers like ATP, coenzyme A, NADH, NADPH, and FADH2. DNA is needed for growth, reproduction, and cellular repair; RNA is needed to translate genetic information from DNA into all of the structures in our bodies; the energy carriers constitute the very infrastructure of the entire system of energy metabolism. This lesson covers the details of the pentose phosphate pathway, how it operates in multiple modes according to the relative needs of the cell for ATP, NADPH, and 5-carbon sugars, the role of glucose 6-phosphate dehydrogenase deficiency and thiamin
Antituberculosis Drugs Isoniazid MOA: inhibits mycolic acid synthesis in the wall Side Effects: peripheral neuropathies (prevent with treatment with pyridoxine), hepatitis, hepatotoxicity Rifampin MOA: blocks the beta subunit of bacterial RNA polymerase thus stopping bacterial RNA synthesis Side Effects: urine and sweat turn red, induces P450, hepatitis Pyrazinamide MOA: nicotinamide analog with unknown mechanism Side Effects: hepatitis, hyperuricemia with gouty arthritis. Is never used alone because of rapid resistance Ethambutol MOA: inhibits mycolic acid synthesis in bacterial cell wall Side Effects: reversible retrobulbar neuritis, loss of central vision
In almost all the bodys muscles, essentially all the carbohydrates utilized for energy are degraded to pyruvic acid by glycolysis and then oxidized
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The preliminary stage activities of a medium term research program aimed at studying the aging process of electrical components due to partial discharges (PD) and temperature are illustrated. In this aim, the Cigre II test
Dear Neuroscientists a friend of mine is experiencing 1) general paresthesia without motor impairment 2) slight diziness and heaviheadness 3) needle and pin on limbs, passively 4) night sweating and slight fatigue Any imput is greatly appreciated daihs at dna.es.dupont.com ...
1998). "6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin". Clin. Cancer Res. 4 (1): 117-130. PMID 9516960. ... p53 activates hexokinase 2 (HK2) that converts glucose to glucose-6-phosphate (G6P) which enters glycolysis to produce ATP, or ... In preclinical studies, drugs such as 6-amino-nicotinamide (6-AN), which inhibits G6P dehydrogenase, the enzyme that initiates ...
... is stimulated by its substrate G6P. The usual ratio of NADPH/NADP+ in the cytosol of tissues ... Glucose-6-phosphate dehydrogenase (G6PD or G6PDH) (EC 1.1.1.49) is a cytosolic enzyme that catalyzes the chemical reaction D- ... Glucose-6-phosphate dehydrogenase deficiency is very common worldwide, and causes acute hemolytic anemia in the presence of ... Glucose-6-phosphate dehydrogenase deficiency Genetic resistance to malaria Thomas D, Cherest H, Surdin-Kerjan Y (Mar 1991). " ...
... vitamin b 6 MeSH D03.383.725.676.925.500 --- pyridoxal MeSH D03.383.725.676.925.500.500 --- pyridoxal phosphate MeSH D03.383. ... 6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, methyl ester MeSH D03.383.725.547.950 --- xanthinol niacinate MeSH D03.383. ... 6,7,11b-hexahydro-3-isobutyl-9,10-dimethoxy- MeSH D03.438.834.775 --- sparteine MeSH D03.438.834.850 --- tetrabenazine MeSH ... 6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, methyl ester MeSH D03.383.725.210 --- dimethindene MeSH D03.383.725.220 --- ...
In blood, 6-phosphogluconate increased 5-fold; glucose, 1.4-fold and glucose 6-phosphate, 1.8-fold. The metabolism of glucose ... The treatment of rats for 4 h with 6-aminonicotinamide (60 mg kg -1) resulted in an 180-fold increase in the concentration of 6 ... Metabolism of glucose into glutamate via the hexose monophosphate shunt and its inhibition by 6-aminonicotinamide in rat brain ... Metabolism of glucose into glutamate via the hexose monophosphate shunt and its inhibition by 6-aminonicotinamide in rat brain ...
6-Aminonicotinamide - Similar structures search, synonyms, formulas, resource links, and other chemical information. ... Substance Name: 6-Aminonicotinamide. RN: 329-89-5. UNII: D6FNW67F2B. InChIKey: ZLWYEPMDOUQDBW-UHFFFAOYSA-N. Note. *. A vitamin ... 1S/C6H7N3O/c7-5-2-1-4(3-9-5)6(8)10/h1-3H,(H2,7,9)(H2,8,10). Download. ...
C) Proliferation of Tsc2−/− and Tsc2+/+ MEFs treated with the autophagy inhibitor spautin-1 (5 μM), 6-AN (10 μM) or both for 4 ... A, B) Proliferation of Tsc2−/− and Tsc2+/+ MEFs treated with chloroquine (CQ, 5 μM), 6-aminonicotinamide (6-AN, 10 μM) or both ... C) Immunoblot analysis of caspase-1 (pro- and cleaved-form) in Tsc2−/− MEFs treated with chloroquine (CQ, 5 μM) and 6-AN (10 μM ... Images from this publication.See all images (6)Free text. Figure 1. Chloroquine inhibits the proliferation and tumorigenicity ...
6-Aminonicotinamide and Acute Degenerative Changes in the Central Nervous System. By STEPHEN S. STERNBERG, FREDERICK S. PHILIPS ... 6-Aminonicotinamide and Acute Degenerative Changes in the Central Nervous System. By STEPHEN S. STERNBERG, FREDERICK S. PHILIPS ... 6-Aminonicotinamide and Acute Degenerative Changes in the Central Nervous System Message Subject. (Your Name) has forwarded a ...
Meaning of 6-aminonicotinamide. What does 6-aminonicotinamide mean? Information and translations of 6-aminonicotinamide in the ... Definition of 6-aminonicotinamide in the Definitions.net dictionary. ... Discuss these 6-aminonicotinamide definitions with the community:. Word of the Day. Would you like us to send you a FREE new ... What does 6-aminonicotinamide mean?. Definitions for 6-aminonicotinamide. Here are all the possible meanings and translations ...
6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin.. I I Budihardjo, D L Walker, P A Svingen, C A Buckwalter, S ... 6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin.. I I Budihardjo, D L Walker, P A Svingen, C A Buckwalter, S ... 6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin.. I I Budihardjo, D L Walker, P A Svingen, C A Buckwalter, S ... 6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin. Message Subject (Your Name) has forwarded a page to you ...
Buy 6-Aminonicotinamide (CAS 329-89-5), a PGD inhibitor and apoptosis inducer, from Santa Cruz. Purity: ≥99%, Molecular Formula ... 6-Aminonicotinamide (CAS 329-89-5) 6-Aminonicotinamide , CAS 329-89-5 is rated 5.0 out of 5 by 1. ... Molecular Formula: C6H7N3O Supplemental Information: This is classified as a Dangerous Good for transport and may be subject to ... 6-Aminonicotinamide Product Citations See how others have used 6-Aminonicotinamide. Click on the entry to view the PubMed entry ...
The biosynthesis of derivatives of NAD and NADP containing 6-aminonicotinamide (6-AN) entails functional disorders in different ... Johnson, W.J., and J.D. McColl: Antimetabolic activity of 6-aminonicotinamide. Fed. Proc. 15, 284 (1965).Google Scholar ... Dietrich, L.S., I.M. Friedland, and L.A. Kaplan: Pyridine nucleotide metabolism: Mechanism of action of the niacin antagonist 6 ... Wolf, A., D. Cowen, and L.M. Geller: The effects of an antimetabolite, 6-aminonicotinamide, on the central nervous system. ...
6-Aminonicotinamide-resistant mutants of Salmonella typhimurium. K. T. Hughes, B. T. Cookson, D. Ladika, B. M. Olivera, J. R. ... 6-Aminonicotinamide-resistant mutants of Salmonella typhimurium. / Hughes, K. T.; Cookson, B. T.; Ladika, D.; Olivera, B. M.; ... nadB (6-aminonicotinamide-resistant) mutants have dominant alleles of the nadB gene, which we propose are altered in feedback ... nadB (6-aminonicotinamide-resistant) mutants have dominant alleles of the nadB gene, which we propose are altered in feedback ...
Time of onset and selective response of chondrogenic core of 5-day chick limb after treatment with 6-aminonicotinamide. (opens ... Further studies on a cytoplasmically transmitted difference in response to the teratogen 6-aminonicotinamide. (opens in new tab ... A cytoplasmically transmitted, diet-dependent difference in response to the teratogenic effects of 6-aminonicotinamide. Science ... The frequency of congenital cleft palate produced by maternal treatment with 6-aminonicotinamide during pregnancy is lower in ...
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Study Chapter 14 - Neurotoxicology flashcards from Cheryl Fattman
6.. Elucidation of inhibitory effects on metastatic sentinel lymph nodes of breast cancer during One-Step Nucleic Acid ... 2018 Jun 18;13(6):e0199117. doi: 10.1371/journal.pone.0199117. eCollection 2018. Erratum in: PLoS One. 2018 Oct 5;13(10): ... 2014 Jun;184(6):1683-94. doi: 10.1016/j.ajpath.2014.02.006. Epub 2014 Apr 8. ... Altered proteoglycan synthesis by micromelial limbs induced by 6-aminonicotinamide. Appearance of abnormal forms of cartilage- ...
N = 6/5. G-J, qRT-PCR for Nqo1, Srxn1 (G), G6pdx, Pgd, Taldo1, Tkt (H), Idh1, and Me1 (J) relative to Rps29 using RNA from ... N = 6. F and G, qRT-PCR for Nqo1 and Gsta3 (F) and Gclc, Gclm, Gss, and Gsr (G) relative to Rps29 using epidermal RNA from tg/ ... Untreated N = 4/6; 3x TPA N = 8/7. D and E, qRT-PCR for G6pdx, Pgd, Taldo1, and Tkt (D) and Me1 and Idh1 (E) relative to Rps29 ... N = 6. G, qRT-PCR for NQO1, SRXN1, and NRF2 relative to GAPDH using RNA from skin of healthy donors (N = 5 biopsies) and from ...
C6H7N3O5S2 (Thiazole, 5-acetamido-2-(methylsulfonyl)-4-nitro-) ... C6H7N3O2______ (4 species). *C6H7N3O4 (Ethyl 4-nitro-1h- ... Formulas which begin with C6H7N3O. All formulas are in Hill order. ...
2-amino-nicotinamide derivatives and their use as vegf-receptor tyrosine kinase inhibitors. ... 6 Abr 2006. Abitorabi M A. Cell culture media. US20060078543. 29 Sep 2005. 13 Abr 2006. Reubinoff Benjamin E. Neural progenitor ... 6. Aoki, et al., "Embroyonic stem cells that differentiate into RPE cell precursors in vitro develop int RPE cell monolayers in ... 6, pp. 1380-1387, (2003).. 14. Conti, et al., "Niche-independent symmetrical self-renewal of a mammalian tissue stem cell", ...
6 a). Additionally, the astrocyte density in the double transgenics was ∼19-40% less than that in single lacZ transgenic mice ( ... Unstained sections (6 μm) were mounted on poly-l-lysine-coated slides, hybridized, and washed as described previously (Lyons et ... 3 a,e,i,m). Some transgenic animals were examined at 6 months of age after a single GCV treatment at P3. These animals were ... Either 10 μg of RNA purified by CsCl centrifugation (lanes 2,5, 6) or 20 μg of RNA purified by STAT-60 (Tel-Test "B," ...
2014 Jun; 73: (6)1137-46. View PubMed. * Deming DA, Ninan J, Bailey HH, Kolesar JM, Eickhoff J, Reid JM, Ames MM, McGovern RM, ... 2011; 6: (9)e24374. View PubMed. * George RE, Lahti JM, Adamson PC, Zhu K, Finkelstein D, Ingle AM, Reid JM, Krailo M, Neuberg ... 2002 Dec; 72(6):638-47. View PubMed. * Steinherz PG, Seibel NL, Ames MM, Avramis VI, Krailo MD, Liu-Mares W, Reid JM, Safgren ... 2016 Jun 27; 6:28699 Epub 2016 June 27 View PubMed. * Camacho-Pereira J, Tarrago MG, Chini CCS, Nin V, Escande C, Warner GM, ...
1998). "6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin". Clin. Cancer Res. 4 (1): 117-130. PMID 9516960. ... p53 activates hexokinase 2 (HK2) that converts glucose to glucose-6-phosphate (G6P) which enters glycolysis to produce ATP, or ... In preclinical studies, drugs such as 6-amino-nicotinamide (6-AN), which inhibits G6P dehydrogenase, the enzyme that initiates ...
A) IL-6 mRNA in non-stimulated (ns) and IL-1β plus TNF-α (20 ng/mL and 50 ng/mL, respectively)-stimulated cultures. Levels of ... B) IL-6 secreted in non-stimulated (ns), IL-1β (20 ng/mL), or TNF-α (50 ng/mL)-stimulated cultures. Levels of IL-6 were ... Il-6 Gene Trans-Activation by RORα.. To further investigate the role of RORα on IL-6 regulation and assess the hypothesis of ... Highly purified C57BL/6 astrocyte cultures were used. They were treated with IL-1β (20 ng/mL) and TNF-α (50 ng/mL) alone or in ...
6-aminonicotinamide (6-AN). Interleukin-6 (IL-6) is a key inducer of brain MT-I+II, as judged by using genetic IL-6 deficient ... Although IL-6 induces CNS protection, this could be due to IL-6-induced MT-I+II, as neuroprotection and recovery are associated ... The MT-I+II actions seen after brain injury and 6-AN-toxicity are induced by both endogenous MT-I overexpression and exogenous ... The IL-6 overexpressors are suitable for this as they spontaneously develop proliferative angiopathy/angiogenesis, which is ...
A, Untreated TSC2-deficient cells and cells incubated with 30 μmol/L Nec-1 or 3 μmol/L NSA for 6 hours were analyzed for the ... Figure 6. BSO/auranofin/Nec-1 combination synergistically inhibits growth of TSC2-deficient tumors and induces necrosis in vivo ... Cells were plated in a 6-well format (1 × 105/well), cultured overnight, and transfected with siRNA using Lipofectamine 3000 ... Autophagy-dependent metabolic reprogramming sensitizes TSC2-deficient cells to the antimetabolite 6-aminonicotinamide. Mol ...
6. The fascicular pattern of the goldfish optic nerve is defined by the tissues astrocytes. (a) and (b) show the pattern in ... 6. Axon regeneration in injured goldfish optic nerve.. The literature abounds with studies that confirm an observation made by ... 1991;6:359-370. [PubMed]. Cajal S. Ramon Y. 1928. In: Degeneration and Regeneration of the Nervous System. (Translated by May, ... Remyelination by Schwann cells of axons demyelinated by intraspinal injections of 6-aminonicotinamide. J Neurocytol. 1975;4:745 ...
Visitors Guide to Hawaii credible Medicinal Chemistry, 1(6), 1143-1151. Polynomial neurons of protective download getting ... A Nitric Oxide Storage and Transport System That 6-aminonicotinamide important Sources from Endogenous Nitric Oxide ...
  • In this study, we tested the hypothesis that inhibition of glucose-6-phosphate dehydrogenase (G6PD), a major source of NADPH in the cell, prevents 20-HETE synthesis and 20-HETE-induced proinflammatory signaling that promotes secretory phenotype of vascular smooth muscle cells. (physiology.org)
  • Recently, our laboratory also found that 20-HETE is involved in promoting prolonged hypoxia-induced pulmonary vasoconstriction and that glucose-6-phosphate dehydrogenase (G6PD), which is a major producer of NADPH in the cell, and cytochrome P -450 monooxygenase enzymes are functionally coupled in vascular smooth muscle tissue (unpublished observations). (physiology.org)
  • In this study, we examined contents of thiobarbituric acid reactive substance (TBARS), H 2 O 2 and glutathione, and glucose-6-phosphate dehydrogenase (G6PDH), glutathione reductase (GR) and glutathione peroxidase (GPX) enzyme activity in Hpa1 xoo -expressing Arabidopsis under salt stress. (pakbs.org)
  • The mechanism for maintaining that enzymatic balance involves glucose-6-phosphate dehydrogenase (G6PD). (elevateblogconference.com)
  • The treatment of rats with 6-aminonicotinamide showed significant decreases in these values, owing to decreases in the radioactive yields of glutamate, glutamine, aspartate, y -aminobutyrate, and alanine+glycine+serine. (royalsocietypublishing.org)
  • Rat fetuses between day 11 of gestation and birth and young rats between the day of birth and the fourteenth postnatal day were treated with a single dose of 6-aminonicotinamide (6-AN) (10 mg/kg body weight) and after different time intervals the resulting brain edema and the deviations from the normal development of the central nervous system were studied in different brain regions, as represented by the visual system. (springer.com)
  • In warm-adapted rats FFA rose 3 is amoxicillin a penicillin to 6 hr after administration of T3, but returned to the pre-injection level 12 hr later. (floatrefer.top)
  • The frequency of congenital cleft palate produced by maternal treatment with 6-aminonicotinamide during pregnancy is lower in the C57BL/6J than in the A/J inbred mouse strain. (meta.org)
  • Once habituated to handling, C57BL/6 mice were most interactive towards a familiar home tunnel, whereas the ICR strain showed strong interaction with all tunnel handling regardless of any experience of a home cage tunnel. (saladgaffe.tk)
  • aeruginosa-infected C57BL/6 when viagra generic available in usa mouse. (baysoft.icu)
  • Studies have also shown that 6-aminonicotinamide induces apoptosis in tumor cells and causes glial cell degeneration. (scbt.com)
  • Although IL-6 induces CNS protection, this could be due to IL-6-induced MT-I+II, as neuroprotection and recovery are associated with MT-I+II levels only and not with IL-6 or inflammation: The more MT-I+II, the less neuropathology. (ku.dk)
  • 6-Aminonicotinamide sensitizes human tumor cell lines to cisplatin. (aacrjournals.org)
  • Colony-forming assays using human tumor cell lines demonstrated that pretreatment with 30-250 microM 6AN for 18 h resulted in increased sensitivity to the DNA cross-linking agent cisplatin, with 6-, 11-, and 17-fold decreases in the cisplatin dose that diminishes colony formation by 90% being observed in K562 leukemia cells, A549 non-small cell lung cancer cells, and T98G glioblastoma cells, respectively. (aacrjournals.org)
  • Clinical manifestation of TSC is development of tumors and neoplastic lesions in kidney, lung, brain, heart and skin, among which renal cell carcinoma (RCC), renal angiomyolipoma (AML), pulmonary lymphangioleiomyomatosis (LAM), and brain tumors constitute the most common cause of TSC-associated deaths ( 3-6 ). (aacrjournals.org)
  • Inclusion criteria required near-homogeneous tumoricidal (α/ß = 10 Gy) biological effective dose (BED10) of 100-105 Gy (e.g., 50/5, 48/4, 60/8), one or two synchronously treated lesions, and at least 6 months of follow up or documented evidence of pneumonitis. (bvsalud.org)
  • In addition, p53 mutation, which occurs mostly in cancer cells, plays a significant role in the resistance of cancer cells to DNA damaging agents ( 4 - 6 ). (pubmedcentralcanada.ca)
  • Warburg also initially suspected that cancer cells displayed impaired respiration due to the functional defects in mitochondria ( 5 ), whereas the findings from his own laboratory ( 3 ) and those of others ( 6 , 7 ) indicated otherwise. (toxicolres.org)
  • We examined the relation of RORα to astrocytes and IL-6 using normal and RORα loss-of-function mutant mice. (pnas.org)
  • Interleukin-6 (IL-6) is a key inducer of brain MT-I+II, as judged by using genetic IL-6 deficient mice (IL-6 knock-out (IL-6KO) mice) and IL-6 overexpressing (GFAP-IL6) mice subjected to brain injury. (ku.dk)
  • Both MT-KO and TgMT genotypes and mice receiving exogenous MT were studied after cryogenic brain injury and 6-AN-induced toxicity in brain stem. (ku.dk)
  • In fact, angiogenesis was highest in the MT-I overexpressing TgMT and GFAP-IL6/TgMT mice, even though the TgMT mice show quite low IL-6 levels as MT-I+II inhibit brain IL-6 mRNA and protein. (ku.dk)
  • Special studies on teratogenicity Mice Six groups of 25 pregnant mice were given continuously from days 6-15 of gestation 0, 6.95, 32.5, 150, or 695 mg/kg b.w./day GDL by oral intubation. (inchem.org)
  • Astrocytes and one of their products, IL-6, not only support neurons but also mediate inflammation in the brain. (pnas.org)
  • This is important because, in the brain, KADP is present in much lower concentrations than NAD, and because the conversion of NADP to 6-AXADP will considerably change the function of the enzymes needing NADP. (springer.com)
  • We suggest that this direct control is necessary to maintain IL-6 basal level in the brain and may be a link between the neuro-supportive roles of RORα, IL-6, and astrocytes. (pnas.org)
  • Moreover, MT-I+II are antioxidant and antiapoptotic factors counteracting reactive oxygen species (ROS)/oxidative stress, neurodegeneration and apoptotic cell death, whereby the delayed (secondary) tissue damage was inhibited after brain injury and 6-AN-toxicity. (ku.dk)
  • The MT-I+II actions seen after brain injury and 6-AN-toxicity are induced by both endogenous MT-I overexpression and exogenous MT-II treatment. (ku.dk)
  • Decreased glycolytic flux rate in the isolated perfused rat brain after pretreatment with 6-aminonicotinamide. (baysoft.icu)
  • These studies also indicate that IL-6 and/or IL-6-induced MT-I+II exert neuroprotective functions. (ku.dk)
  • In this regard, effector T cells have been reported to metabolically reprogram and upregulate glucose, amino acid, and iron uptake to support the synthesis of the new macromolecules necessary for T-cell clonal expansion and effector function ( 5 , 6 ). (frontiersin.org)
  • We have also demonstrated that RORα directly trans-activates the Il-6 gene. (pnas.org)
  • We further demonstrate that RORα plays a dual role in the control of Il-6 gene expression in astrocytes. (pnas.org)
  • We found that RORα directly trans-activates Il-6 gene expression in non-reactive astrocytes and indirectly inhibits Il-6 expression through the NF-κB pathway in activated astrocytes. (pnas.org)
  • Loss-of-function mutation in the TSC1 or TSC2 gene has been defined as the main factor driving malignancy of TSC-associated tumors ( 6, 8 ). (aacrjournals.org)
  • As Wilhelm Levison compared some assignments directly, ' How vegetation-caused factors who enable the Borgo Santo Spirito Modeling from the Ponte Sant' Angelo to St. 84th education providing at Oxford in 1943 was the quantitative paper to include the avenues of intelligence sharing anxiety, and versa to help the 6(11 time of the behavior on the series. (ogtechnology.com)
  • In the phase of production of future nerve cells (preneurons or neuroblasts) from day 11/2 to 20 of pregnancy the undifferentiated ventricular cells react to application of 6-AN by the formation of an intracellular edema, mostly in the form of severe swelling of the perinuclear cleft, 24 hours after treatment. (springer.com)
  • The overall ZD4054 effect of the antioxidant system depends on the intracellular balance between these antioxidant enzymes [6]. (elevateblogconference.com)
  • Neurodegeneration in the substantia nigra pars compacta (SNc) was induced by unilateral injection of 6-OHDA into the medial forebrain bundle. (bvsalud.org)
  • Expression of IL-6, like most inflammatory mediators, is principally driven by the NF-κB signaling pathway. (pnas.org)
  • Accordingly, MT-I+II reduce CNS activation of macrophages and lymphocytes including expression of proinflammatory cytokines IL-1b, IL-6, IL-12 and TNF-a. (ku.dk)
  • Expression and analysis in vitro of recombinant UGT1A7, UGT1A9, UGT1A10, UGT2B7 and UGT2B15 demonstrated that UGT1A7, UGT1A9 and UGT1A10 catalysed the glucuronidation of 7-hydroxybenzo(alpha)pyrene, as well as other environmental carcinogens, such as 2-hydroxyamino-1-methyl-6-phenylimidazo-(4, 5-beta)-pyridine. (lookformedical.com)
  • B thought not to provide a quick, ready reference to the patient to relate her concerns about memory and concentration of 35 mg/l (6-80 mg/l) is reached without causing troublesome side effects. (alsrideforlife.org)
  • The Muller cells are considered to be a type of astrocytes because their processes are filled with intermediate filaments - so-called because their diameter is intermediate between myosin filaments (15 nm) and actin filaments (6 nm) - that stain dramatically with antibodies to GFAP, the subunit protein of the filaments found in astrocytes (reviewed by Traub, 1985). (utah.edu)
  • Although the observations of Chance and Weinhouse ( 6 , 7 ) contradicted Warburg's argument of mitochondrial defects in cancers, many studies over the past several decades have documented oncogenic nuclear and mitochondrial DNA mutations in proteins involved in respiration. (toxicolres.org)
  • Astrocytes are among the effector cells of innate immunity in the CNS and acquire the capacity to produce high levels of inflammatory mediators, including IL-6. (pnas.org)
  • In a study published in 1975 in "Archives of Dermatology," Herschel S. Zackheim, M.D., found that a combination of oral niacinamide and topical 6-aminonicotinamide helped to substantially improve psoriasis in 27 out of 34 patients, with complete clearing of plaques -- or scaly areas -- experienced by some. (acner.org)
  • 7. The method of claim 6 , wherein the human umbilical cord feeder cells consists essentially of the human umbilical cord fibroblast feeder cells. (google.es)
  • 3. The method according to claim 1, wherein R 4 and R 5 are taken together with the atoms to which they are bound to form a 5-6 membered nitrogen containing heterocyclic ring optionally containing 1 or more nitrogen, oxygen or sulfur atoms and which may be optionally substituted with 1 or more R 6 ' groups. (patentsencyclopedia.com)