Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells.
Sensitive method for detection of bacterial endotoxins and endotoxin-like substances that depends on the in vitro gelation of Limulus amebocyte lysate (LAL), prepared from the circulating blood (amebocytes) of the horseshoe crab, by the endotoxin or related compound. Used for detection of endotoxin in body fluids and parenteral pharmaceuticals.
Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed)
A condition characterized by the presence of ENDOTOXINS in the blood. On lysis, the outer cell wall of gram-negative bacteria enters the systemic circulation and initiates a pathophysiologic cascade of pro-inflammatory mediators.
Sepsis associated with HYPOTENSION or hypoperfusion despite adequate fluid resuscitation. Perfusion abnormalities may include, but are not limited to LACTIC ACIDOSIS; OLIGURIA; or acute alteration in mental status.
Earth or other matter in fine, dry particles. (Random House Unabridged Dictionary, 2d ed)
Hemorrhagic necrosis that was first demonstrated in rabbits with a two-step reaction, an initial local (intradermal) or general (intravenous) injection of a priming endotoxin (ENDOTOXINS) followed by a second intravenous endotoxin injection (provoking agent) 24 h later. The acute inflammation damages the small blood vessels. The following intravascular coagulation leads to capillary and venous THROMBOSIS and NECROSIS. Shwartzman phenomenon can also occur in other species with a single injection of a provoking agent, and during infections or pregnancy. Its susceptibility depends on the status of IMMUNE SYSTEM, coagulation, FIBRINOLYSIS, and blood flow.
Substances capable of increasing BODY TEMPERATURE and cause FEVER and may be used for FEVER THERAPY. They may be of microbial origin, often POLYSACCHARIDES, and may contaminate distilled water.
A condition produced by the presence of toxins or other harmful substances in the BLOOD.
Lipid A is the biologically active component of lipopolysaccharides. It shows strong endotoxic activity and exhibits immunogenic properties.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
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.
The presence of bacteria, viruses, and fungi in the air. This term is not restricted to pathogenic organisms.
Glycolipid-anchored membrane glycoproteins expressed on cells of the myelomonocyte lineage including monocytes, macrophages, and some granulocytes. They function as receptors for the complex of lipopolysaccharide (LPS) and LPS-binding protein.
Mononuclear cells with pronounced phagocytic ability that are distributed extensively in lymphoid and other organs. It includes MACROPHAGES and their precursors; PHAGOCYTES; KUPFFER CELLS; HISTIOCYTES; DENDRITIC CELLS; LANGERHANS CELLS; and MICROGLIA. The term mononuclear phagocyte system has replaced the former reticuloendothelial system, which also included less active phagocytic cells such as fibroblasts and endothelial cells. (From Illustrated Dictionary of Immunology, 2d ed.)
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
A mixture of polymyxins B1 and B2, obtained from Bacillus polymyxa strains. They are basic polypeptides of about eight amino acids and have cationic detergent action on cell membranes. Polymyxin B is used for infections with gram-negative organisms, but may be neurotoxic and nephrotoxic.
A pattern recognition receptor that interacts with LYMPHOCYTE ANTIGEN 96 and LIPOPOLYSACCHARIDES. It mediates cellular responses to GRAM-NEGATIVE BACTERIA.
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.
A secreted protein that associates with TOLL-LIKE RECEPTOR 4 and is essential for receptor recognition of LIPOPOLYSACCHARIDES.
The contamination of indoor air.
Specific, characterizable, poisonous chemicals, often PROTEINS, with specific biological properties, including immunogenicity, produced by microbes, higher plants (PLANTS, TOXIC), or ANIMALS.
Galactosamine is a type of amino monosaccharide that is a key component of many glycosaminoglycans, and is commonly found in animal tissues, often used in research and pharmaceutical applications for its role in cellular metabolism and synthesis of various biological molecules.
Antisera from immunized animals that is purified and used as a passive immunizing agent against specific BACTERIAL TOXINS.
A serotype of SALMONELLA ENTERICA which is the etiologic agent of TYPHOID FEVER.
"In the context of medicine, 'textiles' refers to the use of woven, knitted, or nonwoven materials, often as components of medical devices such as bandages, sutures, or implantable materials, which can be designed to have specific properties like biocompatibility, breathability, or antimicrobial activity."
An abnormal elevation of body temperature, usually as a result of a pathologic process.
The presence of organisms, or any foreign material that makes a drug preparation impure.
A TEXTILE fiber obtained from the pappus (outside the SEEDS) of cotton plant (GOSSYPIUM). Inhalation of cotton fiber dust over a prolonged period can result in BYSSINOSIS.
Systemic inflammatory response syndrome with a proven or suspected infectious etiology. When sepsis is associated with organ dysfunction distant from the site of infection, it is called severe sepsis. When sepsis is accompanied by HYPOTENSION despite adequate fluid infusion, it is called SEPTIC SHOCK.
The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.
A soluble factor produced by MONOCYTES; MACROPHAGES, and other cells which activates T-lymphocytes and potentiates their response to mitogens or antigens. Interleukin-1 is a general term refers to either of the two distinct proteins, INTERLEUKIN-1ALPHA and INTERLEUKIN-1BETA. The biological effects of IL-1 include the ability to replace macrophage requirements for T-cell activation.
The aggregate business enterprise of manufacturing textiles. (From Random House Unabridged Dictionary, 2d ed)
A cytokine that stimulates the growth and differentiation of B-LYMPHOCYTES and is also a growth factor for HYBRIDOMAS and plasmacytomas. It is produced by many different cells including T-LYMPHOCYTES; MONOCYTES; and FIBROBLASTS.
The passage of viable bacteria from the GASTROINTESTINAL TRACT to extra-intestinal sites, such as the mesenteric lymph node complex, liver, spleen, kidney, and blood. Factors that promote bacterial translocation include overgrowth with gram-negative enteric bacilli, impaired host immune defenses, and injury to the INTESTINAL MUCOSA resulting in increased intestinal permeability. Bacterial translocation from the lung to the circulation is also possible and sometimes accompanies MECHANICAL VENTILATION.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner.
The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.)
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.
A naturally occurring glucocorticoid. It has been used in replacement therapy for adrenal insufficiency and as an anti-inflammatory agent. Cortisone itself is inactive. It is converted in the liver to the active metabolite HYDROCORTISONE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p726)
Living facilities for humans.
The exposure to potentially harmful chemical, physical, or biological agents by inhaling them.
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.
Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes.
Thorium oxide (ThO2). A radiographic contrast agent that was used in the early 1930s through about 1954. High rates of mortality have been linked to its use and it has been shown to cause liver cancer.
Inbred C3H mice are a strain of laboratory mice that have been selectively bred to maintain a high degree of genetic uniformity and share specific genetic characteristics, including susceptibility to certain diseases, which makes them valuable for biomedical research purposes.
Specialized phagocytic cells of the MONONUCLEAR PHAGOCYTE SYSTEM found on the luminal surface of the hepatic sinusoids. They filter bacteria and small foreign proteins out of the blood, and dispose of worn out red blood cells.
Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.
A disorder characterized by procoagulant substances entering the general circulation causing a systemic thrombotic process. The activation of the clotting mechanism may arise from any of a number of disorders. A majority of the patients manifest skin lesions, sometimes leading to PURPURA FULMINANS.
Forceful administration into the peritoneal cavity of liquid medication, nutrient, or other fluid through a hollow needle piercing the abdominal wall.
Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method.
Elements of limited time intervals, contributing to particular results or situations.
An arthropod subclass (Xiphosura) comprising the North American (Limulus) and Asiatic (Tachypleus) genera of horseshoe crabs.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria found in soil, water, food, and clinical specimens. It is a prominent opportunistic pathogen for hospitalized patients.
Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles.
A condition of BRONCHOCONSTRICTION resulting from hypersensitive reaction to inhaled dust during the initial processing of cotton, flax, or hemp in the textile industry. Symptoms include wheezing and tightness in the chest.
Progressive diminution of the susceptibility of a human or animal to the effects of a drug, resulting from its continued administration. It should be differentiated from DRUG RESISTANCE wherein an organism, disease, or tissue fails to respond to the intended effectiveness of a chemical or drug. It should also be differentiated from MAXIMUM TOLERATED DOSE and NO-OBSERVED-ADVERSE-EFFECT LEVEL.

Personal exposure to dust, endotoxin and crystalline silica in California agriculture. (1/4158)

AIMS: The aim of this study was to measure personal exposure to dust, endotoxin and crystalline silica during various agricultural operations in California over a period of one year. METHODS: Ten farms were randomly selected in Yolo and Solano counties and workers were invited to wear personal sampling equipment to measure inhalable and respirable dust levels during various operations. The samples were analysed for endotoxin using the Limulus Amebocyte Lysate assay and crystalline silica content using X-ray diffraction. In total 142 inhalable samples and 144 respirable samples were collected. RESULTS: The measurements showed considerable difference in exposure levels between various operations, in particular for the inhalable fraction of the dust and the endotoxin. Machine harvesting of tree crops (Geometric mean (GM) = 45.1 mg/m3) and vegetables (GM = 7.9 mg/m3), and cleaning of poultry houses (GM = 6.7 mg/m3) showed the highest inhalable dust levels. Cleaning of poultry houses also showed the highest inhalable endotoxin levels (GM = 1861 EU/m3). Respirable dust levels were generally low, except for machine harvesting of tree crops (GM = 2.8 mg/m3) and vegetables (GM = 0.9 mg/m3). Respirable endotoxin levels were also low. For the inhalable dust fraction, levels were reduced considerably when an enclosed cabin was present. The percentage of crystalline silica was overall higher in the respirable dust samples than the inhalable dust samples. CONCLUSIONS: Considerable differences exist in personal exposure levels to dust, endotoxin and crystalline silica during various agricultural operations in California agriculture with some operations showing very high levels.  (+info)

Hierarchical cluster analysis applied to workers' exposures in fiberglass insulation manufacturing. (2/4158)

The objectives of this study were to explore the application of cluster analysis to the characterization of multiple exposures in industrial hygiene practice and to compare exposure groupings based on the result from cluster analysis with that based on non-measurement-based approaches commonly used in epidemiology. Cluster analysis was performed for 37 workers simultaneously exposed to three agents (endotoxin, phenolic compounds and formaldehyde) in fiberglass insulation manufacturing. Different clustering algorithms, including complete-linkage (or farthest-neighbor), single-linkage (or nearest-neighbor), group-average and model-based clustering approaches, were used to construct the tree structures from which clusters can be formed. Differences were observed between the exposure clusters constructed by these different clustering algorithms. When contrasting the exposure classification based on tree structures with that based on non-measurement-based information, the results indicate that the exposure clusters identified from the tree structures had little in common with the classification results from either the traditional exposure zone or the work group classification approach. In terms of the defining homogeneous exposure groups or from the standpoint of health risk, some toxicological normalization in the components of the exposure vector appears to be required in order to form meaningful exposure groupings from cluster analysis. Finally, it remains important to see if the lack of correspondence between exposure groups based on epidemiological classification and measurement data is a peculiarity of the data or a more general problem in multivariate exposure analysis.  (+info)

5'-Nucleotidase activity of mouse peritoneal macrophages. I. Synthesis and degradation in resident and inflammatory populations. (3/4158)

Mouse resident peritoneal macrophages display sufficient 5'-nucleotidase activity to hydrolyze 58 nm AMP/min per cell protein. This activity increases approximately 163 nm AMP/min per mg after 72 h in culture. The enzyme is renewed in unstimulated cells with a half-time of 13.9 h. The activity is not reduced by treatment of intact cells with a variety of proteolytic enzymes, including trypsin, pronase, urokinase, and plasmin. Cells obtained from an inflammatory exudate have diminished or absent levels of enzyme activity. Endotoxin-elicited cells display enzyme activitiy of 20.9 nm AMP/min per mg, while thioglycollate-stimulated macrophages have no detectable activity. The reduced level of activity in endotoxin-stimulated cells is due to their elevated rate of enzyme degradation, with a half-time of 6.9 h. Their rate of enzyme synthesis is essentially normal. No evidence for latent enzyme activity could be obtained in thioglycollate-stimulated cells, nor do these cells produce any inhibition of normal cell enzyme activity. Serum deprivation reduces the enzyme activity of resident cells to about 45% of control activity. These conditions do not significantly affect the rate of enzyme synthesis, but again are explainable by an increase in the rate of enzyme degradation. Pinocytic rate is elevated in endotoxin-stimulated cells which show a more rapid rate of enzyme degradation than unstimulated cells do. However, in serum-free conditions, the rate of enzyme degradation is doubled with no change in the pinocytic rate of the cells.  (+info)

Effect of sodium butyrate on lymphocyte activation. (4/4158)

Butyrate, in relatively low concentrations, has been shown to induce synthesis of enzymes, cause changes in cell morphology, and inhibit growth of a variety of mammalian cells in tissue culture (reviewed in [1]). In this communication, we report our observations on the effect of butyrate on lymphocyte activation. Butyrate completely and reversibly inhibits mitogen-induced blast formation. We present evidence that it does not interfere with the binding of mitogens, that it does not inhibit a number of the "early" reactions involved in activation, and that it does not affect ongoing DNA synthesis for an extended period of time. However, butyrate rapidly inhibits any increase in the rate of DNA synthesis.  (+info)

Macrophage plasminogen activator: induction by asbestos is blocked by anti-inflammatory steroids. (5/4158)

Intraperitoneal injection of asbestos fibres into mice induces the formation of exudates containing macrophages that produce plasminogen activator. Like-wise, in vitro addition of asbestos to macrophage cultures stimulates plasminogen activator secretion; the synthesis and secretion of lysozyme and lysosomal enzymes are not changed under these conditions. The enhanced secretion of plasminogen activator by macrophages exposed to asbestos is suppressed by low concentrations of anti-inflammatory steroids.  (+info)

Clindamycin suppresses endotoxin released by ceftazidime-treated Escherichia coli O55:B5 and subsequent production of tumor necrosis factor alpha and interleukin-1 beta. (6/4158)

Treatment of septicemia caused by Escherichia coli with ceftazidime (CAZ) may be associated with the development of septic shock due to the release of bacterial lipopolysaccharide. We examined the suppressive effect of clindamycin (CLDM) on CAZ-induced release of endotoxin by cultured E. coli and the subsequent production of inflammatory cytokines (tumor necrosis factor alpha [TNF-alpha] and interleukin-1 beta [IL-1 beta]). E. coli ATCC 12014 was incubated in inactivated horse serum with or without CLDM for 1, 4, or 18 h, followed by the addition of CAZ and collection of the culture supernatant at 0, 1, and 2 h. The concentration of endotoxin in each sample was measured by a chromogenic Limulus test. Another portion of the culture supernatant was added to THP-1 cell culture and incubated for 4 h, and the concentrations of TNF-alpha and IL-1 beta in the supernatant were measured by an enzyme-linked immunosorbent assay. In the control group (no CLDM), CAZ administration resulted in significant increases in endotoxin, TNF-alpha, and IL-1 beta concentrations. Pretreatment of E. coli with CLDM for 4 or 18 h before the addition of CAZ significantly suppressed the concentrations of endotoxin, TNF-alpha, and IL-1 beta in a time-dependent manner. In addition, CAZ treatment transformed E. coli from rodshaped bacteria to filament-like structures, as determined by electron microscopy, while pretreatment with CLDM prevented these morphological changes. Our in vitro studies showed that CAZ-induced release of large quantities of endotoxin by E. coli could be suppressed by prior administration of CLDM.  (+info)

Fosfomycin alters lipopolysaccharide-induced inflammatory cytokine production in mice. (7/4158)

To determine the mechanisms of immunomodulating action of fosfomycin (FOF), we examined its effect on the production of inflammatory cytokines in mice injected with lipopolysaccharide (LPS). Treatment with FOF significantly lowered the peak serum levels of tumor necrosis factor alpha and interleukin-1 beta, indicating that FOF alters inflammatory cytokine production after LPS stimulation.  (+info)

Overexpression of the Bacillus thuringiensis (Bt) Cry2Aa2 protein in chloroplasts confers resistance to plants against susceptible and Bt-resistant insects. (8/4158)

Evolving levels of resistance in insects to the bioinsecticide Bacillus thuringiensis (Bt) can be dramatically reduced through the genetic engineering of chloroplasts in plants. When transgenic tobacco leaves expressing Cry2Aa2 protoxin in chloroplasts were fed to susceptible, Cry1A-resistant (20,000- to 40,000-fold) and Cry2Aa2-resistant (330- to 393-fold) tobacco budworm Heliothis virescens, cotton bollworm Helicoverpa zea, and the beet armyworm Spodoptera exigua, 100% mortality was observed against all insect species and strains. Cry2Aa2 was chosen for this study because of its toxicity to many economically important insect pests, relatively low levels of cross-resistance against Cry1A-resistant insects, and its expression as a protoxin instead of a toxin because of its relatively small size (65 kDa). Southern blot analysis confirmed stable integration of cry2Aa2 into all of the chloroplast genomes (5, 000-10,000 copies per cell) of transgenic plants. Transformed tobacco leaves expressed Cry2Aa2 protoxin at levels between 2% and 3% of total soluble protein, 20- to 30-fold higher levels than current commercial nuclear transgenic plants. These results suggest that plants expressing high levels of a nonhomologous Bt protein should be able to overcome or at the very least, significantly delay, broad spectrum Bt-resistance development in the field.  (+info)

Endotoxins are toxic substances that are associated with the cell walls of certain types of bacteria. They are released when the bacterial cells die or divide, and can cause a variety of harmful effects in humans and animals. Endotoxins are made up of lipopolysaccharides (LPS), which are complex molecules consisting of a lipid and a polysaccharide component.

Endotoxins are particularly associated with gram-negative bacteria, which have a distinctive cell wall structure that includes an outer membrane containing LPS. These toxins can cause fever, inflammation, and other symptoms when they enter the bloodstream or other tissues of the body. They are also known to play a role in the development of sepsis, a potentially life-threatening condition characterized by a severe immune response to infection.

Endotoxins are resistant to heat, acid, and many disinfectants, making them difficult to eliminate from contaminated environments. They can also be found in a variety of settings, including hospitals, industrial facilities, and agricultural operations, where they can pose a risk to human health.

The Limulus test, also known as the Limulus amebocyte lysate (LAL) test, is a medical diagnostic assay used to detect the presence of bacterial endotoxins in various biological and medical samples. The test utilizes the blood cells (amebocytes) from the horseshoe crab (Limulus polyphemus) that can coagulate in response to endotoxins, which are found in the outer membrane of gram-negative bacteria.

The LAL test is widely used in the pharmaceutical industry to ensure that medical products, such as injectable drugs and implantable devices, are free from harmful levels of endotoxins. It can also be used in clinical settings to detect bacterial contamination in biological samples like blood, urine, or cerebrospinal fluid.

The test involves mixing the sample with LAL reagent and monitoring for the formation of a gel-like clot or changes in turbidity, which indicate the presence of endotoxins. The amount of endotoxin present can be quantified by comparing the reaction to a standard curve prepared using known concentrations of endotoxin.

The Limulus test is highly sensitive and specific for endotoxins, making it an essential tool in ensuring patient safety and preventing bacterial infections associated with medical procedures and treatments.

Lipopolysaccharides (LPS) are large molecules found in the outer membrane of Gram-negative bacteria. They consist of a hydrophilic polysaccharide called the O-antigen, a core oligosaccharide, and a lipid portion known as Lipid A. The Lipid A component is responsible for the endotoxic activity of LPS, which can trigger a powerful immune response in animals, including humans. This response can lead to symptoms such as fever, inflammation, and septic shock, especially when large amounts of LPS are introduced into the bloodstream.

Endotoxemia is a medical condition characterized by the presence of endotoxins in the bloodstream. Endotoxins are toxic substances that are found in the cell walls of certain types of bacteria, particularly gram-negative bacteria. They are released into the circulation when the bacteria die or multiply, and can cause a variety of symptoms such as fever, inflammation, low blood pressure, and organ failure.

Endotoxemia is often seen in patients with severe bacterial infections, sepsis, or septic shock. It can also occur after certain medical procedures, such as surgery or dialysis, that may allow bacteria from the gut to enter the bloodstream. In some cases, endotoxemia may be a result of a condition called "leaky gut syndrome," in which the lining of the intestines becomes more permeable, allowing endotoxins and other harmful substances to pass into the bloodstream.

Endotoxemia can be diagnosed through various tests, including blood cultures, measurement of endotoxin levels in the blood, and assessment of inflammatory markers such as c-reactive protein (CRP) and procalcitonin (PCT). Treatment typically involves antibiotics to eliminate the underlying bacterial infection, as well as supportive care to manage symptoms and prevent complications.

Septic shock is a serious condition that occurs as a complication of an infection that has spread throughout the body. It's characterized by a severe drop in blood pressure and abnormalities in cellular metabolism, which can lead to organ failure and death if not promptly treated.

In septic shock, the immune system overreacts to an infection, releasing an overwhelming amount of inflammatory chemicals into the bloodstream. This leads to widespread inflammation, blood vessel dilation, and leaky blood vessels, which can cause fluid to leak out of the blood vessels and into surrounding tissues. As a result, the heart may not be able to pump enough blood to vital organs, leading to organ failure.

Septic shock is often caused by bacterial infections, but it can also be caused by fungal or viral infections. It's most commonly seen in people with weakened immune systems, such as those who have recently undergone surgery, have chronic medical conditions, or are taking medications that suppress the immune system.

Prompt diagnosis and treatment of septic shock is critical to prevent long-term complications and improve outcomes. Treatment typically involves aggressive antibiotic therapy, intravenous fluids, vasopressors to maintain blood pressure, and supportive care in an intensive care unit (ICU).

In medical terms, "dust" is not defined as a specific medical condition or disease. However, generally speaking, dust refers to small particles of solid matter that can be found in the air and can come from various sources, such as soil, pollen, hair, textiles, paper, or plastic.

Exposure to certain types of dust, such as those containing allergens, chemicals, or harmful pathogens, can cause a range of health problems, including respiratory issues like asthma, allergies, and lung diseases. Prolonged exposure to certain types of dust, such as silica or asbestos, can even lead to serious conditions like silicosis or mesothelioma.

Therefore, it is important for individuals who work in environments with high levels of dust to take appropriate precautions, such as wearing masks and respirators, to minimize their exposure and reduce the risk of health problems.

The Shwartzman phenomenon is a rare but serious condition characterized by the development of thrombotic vasculopathy in multiple organs. It is typically divided into two phases: the local reaction phase and the systemic reaction phase. The local reaction phase occurs after the injection of a large dose of bacterial endotoxin (such as Escherichia coli) into the skin, which results in a localized inflammatory response. This is followed by the systemic reaction phase, which can occur 24-48 hours later and is characterized by the development of thrombosis and necrosis in various organs, including the kidneys, lungs, and brain.

The Shwartzman phenomenon is thought to be caused by the activation of the complement system and the coagulation cascade, which leads to the formation of blood clots and the destruction of blood vessels. It can occur as a complication of certain medical procedures (such as intravenous pyelograms) or infections, and it is often seen in patients with compromised immune systems.

The Shwartzman phenomenon is named after the Russian-American physician, Maurice Shwartzman, who first described the condition in 1928.

Pyrogens are substances that can induce fever, or elevate body temperature above the normal range of 36-37°C (96.8-98.6°F). They can be either exogenous (coming from outside the body) or endogenous (produced within the body). Exogenous pyrogens include bacterial toxins, dead bacteria, and various chemicals. Endogenous pyrogens are substances produced by the immune system in response to an infection, such as interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α). These substances act on the hypothalamus, a part of the brain that regulates body temperature, to raise the set point for body temperature, leading to an increase in body temperature.

Toxemia is an outdated and vague term that was used to describe the presence of toxic substances or toxins in the blood. It was often used in relation to certain medical conditions, most notably in pregnancy-related complications such as preeclampsia and eclampsia. In modern medicine, the term "toxemia" is rarely used due to its lack of specificity and the more precise terminology that has replaced it. It's crucial to note that this term should not be used in a medical context or setting.

Lipid A is the biologically active component of lipopolysaccharides (LPS), which are found in the outer membrane of Gram-negative bacteria. It is responsible for the endotoxic activity of LPS and plays a crucial role in the pathogenesis of gram-negative bacterial infections. Lipid A is a glycophosphatidylinositol (GPI) anchor, consisting of a glucosamine disaccharide backbone with multiple fatty acid chains and phosphate groups attached to it. It can induce the release of proinflammatory cytokines, fever, and other symptoms associated with sepsis when introduced into the bloodstream.

'Escherichia coli' (E. coli) is a type of gram-negative, facultatively anaerobic, rod-shaped bacterium that commonly inhabits the intestinal tract of humans and warm-blooded animals. It is a member of the family Enterobacteriaceae and one of the most well-studied prokaryotic model organisms in molecular biology.

While most E. coli strains are harmless and even beneficial to their hosts, some serotypes can cause various forms of gastrointestinal and extraintestinal illnesses in humans and animals. These pathogenic strains possess virulence factors that enable them to colonize and damage host tissues, leading to diseases such as diarrhea, urinary tract infections, pneumonia, and sepsis.

E. coli is a versatile organism with remarkable genetic diversity, which allows it to adapt to various environmental niches. It can be found in water, soil, food, and various man-made environments, making it an essential indicator of fecal contamination and a common cause of foodborne illnesses. The study of E. coli has contributed significantly to our understanding of fundamental biological processes, including DNA replication, gene regulation, and protein synthesis.

Tumor Necrosis Factor-alpha (TNF-α) is a cytokine, a type of small signaling protein involved in immune response and inflammation. It is primarily produced by activated macrophages, although other cell types such as T-cells, natural killer cells, and mast cells can also produce it.

TNF-α plays a crucial role in the body's defense against infection and tissue injury by mediating inflammatory responses, activating immune cells, and inducing apoptosis (programmed cell death) in certain types of cells. It does this by binding to its receptors, TNFR1 and TNFR2, which are found on the surface of many cell types.

In addition to its role in the immune response, TNF-α has been implicated in the pathogenesis of several diseases, including autoimmune disorders such as rheumatoid arthritis, inflammatory bowel disease, and psoriasis, as well as cancer, where it can promote tumor growth and metastasis.

Therapeutic agents that target TNF-α, such as infliximab, adalimumab, and etanercept, have been developed to treat these conditions. However, these drugs can also increase the risk of infections and other side effects, so their use must be carefully monitored.

Air microbiology is the study of microorganisms, such as bacteria, fungi, and viruses, that are present in the air. These microorganisms can be suspended in the air as particles or carried within droplets of liquid, such as those produced when a person coughs or sneezes.

Air microbiology is an important field of study because it helps us understand how these microorganisms are transmitted and how they may affect human health. For example, certain airborne bacteria and fungi can cause respiratory infections, while airborne viruses can cause diseases such as the common cold and influenza.

Air microbiology involves various techniques for collecting and analyzing air samples, including culturing microorganisms on growth media, using molecular biology methods to identify specific types of microorganisms, and measuring the concentration of microorganisms in the air. This information can be used to develop strategies for controlling the spread of airborne pathogens and protecting public health.

CD14 is a type of protein found on the surface of certain cells in the human body, including monocytes, macrophages, and some types of dendritic cells. These cells are part of the immune system and play a crucial role in detecting and responding to infections and other threats.

CD14 is not an antigen itself, but it can bind to certain types of antigens, such as lipopolysaccharides (LPS) found on the surface of gram-negative bacteria. When CD14 binds to an LPS molecule, it helps to activate the immune response and trigger the production of cytokines and other inflammatory mediators.

CD14 can also be found in soluble form in the bloodstream, where it can help to neutralize LPS and prevent it from causing damage to tissues and organs.

It's worth noting that while CD14 plays an important role in the immune response, it is not typically used as a target for vaccines or other immunotherapies. Instead, it is often studied as a marker of immune activation and inflammation in various diseases, including sepsis, atherosclerosis, and Alzheimer's disease.

The Mononuclear Phagocyte System (MPS) is a network of specialized immune cells distributed throughout the body, primarily consisting of monocytes, macrophages, and dendritic cells. These cells share a common bone marrow-derived precursor and play crucial roles in innate and adaptive immunity. They are involved in various functions such as:

1. Phagocytosis: engulfing and destroying foreign particles, microbes, and cellular debris.
2. Antigen presentation: processing and presenting antigens to T-cells to initiate an adaptive immune response.
3. Cytokine production: releasing pro- and anti-inflammatory cytokines to regulate immune responses and maintain tissue homeostasis.
4. Immune regulation: modulating the activity of other immune cells, including T-cells, B-cells, and natural killer (NK) cells.

The MPS is essential for maintaining tissue integrity, fighting infections, and orchestrating immune responses. Its components are found in various tissues, including the liver (Kupffer cells), spleen, lymph nodes, bone marrow, and connective tissues.

Occupational air pollutants refer to harmful substances present in the air in workplaces or occupational settings. These pollutants can include dusts, gases, fumes, vapors, or mists that are produced by industrial processes, chemical reactions, or other sources. Examples of occupational air pollutants include:

1. Respirable crystalline silica: A common mineral found in sand, stone, and concrete that can cause lung disease and cancer when inhaled in high concentrations.
2. Asbestos: A naturally occurring mineral fiber that was widely used in construction materials and industrial applications until the 1970s. Exposure to asbestos fibers can cause lung diseases such as asbestosis, lung cancer, and mesothelioma.
3. Welding fumes: Fumes generated during welding processes can contain harmful metals such as manganese, chromium, and nickel that can cause neurological damage and respiratory problems.
4. Isocyanates: Chemicals used in the production of foam insulation, spray-on coatings, and other industrial applications that can cause asthma and other respiratory symptoms.
5. Coal dust: Fine particles generated during coal mining, transportation, and handling that can cause lung disease and other health problems.
6. Diesel exhaust: Emissions from diesel engines that contain harmful particulates and gases that can cause respiratory and cardiovascular problems.

Occupational air pollutants are regulated by various government agencies, including the Occupational Safety and Health Administration (OSHA) in the United States, to protect workers from exposure and minimize health risks.

Polymyxin B is an antibiotic derived from the bacterium Paenibacillus polymyxa. It belongs to the class of polypeptide antibiotics and has a cyclic structure with a hydrophobic and a hydrophilic region, which allows it to interact with and disrupt the bacterial cell membrane. Polymyxin B is primarily active against gram-negative bacteria, including many multidrug-resistant strains. It is used clinically to treat serious infections caused by these organisms, such as sepsis, pneumonia, and urinary tract infections. However, its use is limited due to potential nephrotoxicity and neurotoxicity.

Toll-Like Receptor 4 (TLR4) is a type of protein found on the surface of some cells in the human body, including immune cells like macrophages and dendritic cells. It belongs to a class of proteins called pattern recognition receptors (PRRs), which play a crucial role in the innate immune system's response to infection.

TLR4 recognizes and responds to specific molecules found on gram-negative bacteria, such as lipopolysaccharide (LPS), also known as endotoxin. When TLR4 binds to LPS, it triggers a signaling cascade that leads to the activation of immune cells, production of pro-inflammatory cytokines and chemokines, and initiation of the adaptive immune response.

TLR4 is an essential component of the body's defense against gram-negative bacterial infections, but its overactivation can also contribute to the development of various inflammatory diseases, such as sepsis, atherosclerosis, and certain types of cancer.

Salmonella is a genus of rod-shaped, Gram-negative bacteria that are facultative anaerobes and are motile due to peritrichous flagella. They are non-spore forming and often have a single polar flagellum when grown in certain conditions. Salmonella species are important pathogens in humans and other animals, causing foodborne illnesses known as salmonellosis.

Salmonella can be found in the intestinal tracts of humans, birds, reptiles, and mammals. They can contaminate various foods, including meat, poultry, eggs, dairy products, and fresh produce. The bacteria can survive and multiply in a wide range of temperatures and environments, making them challenging to control completely.

Salmonella infection typically leads to gastroenteritis, characterized by symptoms such as diarrhea, abdominal cramps, fever, and vomiting. In some cases, the infection may spread beyond the intestines, leading to more severe complications like bacteremia (bacterial infection of the blood) or focal infections in various organs.

There are two main species of Salmonella: S. enterica and S. bongori. S. enterica is further divided into six subspecies and numerous serovars, with over 2,500 distinct serotypes identified to date. Some well-known Salmonella serovars include S. Typhi (causes typhoid fever), S. Paratyphi A, B, and C (cause paratyphoid fever), and S. Enteritidis and S. Typhimurium (common causes of foodborne salmonellosis).

Lymphocyte Antigen 96 (LY96), also known as MD-1 or myeloid differentiation factor 1, is a protein that is primarily expressed on the surface of B cells and some types of antigen-presenting cells. It associates with CD14/TLR4/MD-2 complex and plays an important role in the recognition and response to lipopolysaccharides (LPS) found on gram-negative bacteria. LY96 is involved in the activation of signaling pathways that lead to the production of pro-inflammatory cytokines, which are crucial for the immune response against bacterial infections.

Indoor air pollution refers to the contamination of air within buildings and structures due to presence of particles, gases, or biological materials that can harmfully affect the health of occupants. These pollutants can originate from various sources including cooking stoves, heating systems, building materials, furniture, tobacco products, outdoor air, and microbial growth. Some common indoor air pollutants include particulate matter, carbon monoxide, nitrogen dioxide, sulfur dioxide, volatile organic compounds (VOCs), and mold. Prolonged exposure to these pollutants can cause a range of health issues, from respiratory problems to cancer, depending on the type and level of exposure. Effective ventilation, air filtration, and source control are some of the strategies used to reduce indoor air pollution.

Biological toxins are poisonous substances that are produced by living organisms such as bacteria, plants, and animals. They can cause harm to humans, animals, or the environment. Biological toxins can be classified into different categories based on their mode of action, such as neurotoxins (affecting the nervous system), cytotoxins (damaging cells), and enterotoxins (causing intestinal damage).

Examples of biological toxins include botulinum toxin produced by Clostridium botulinum bacteria, tetanus toxin produced by Clostridium tetani bacteria, ricin toxin from the castor bean plant, and saxitoxin produced by certain types of marine algae.

Biological toxins can cause a range of symptoms depending on the type and amount of toxin ingested or exposed to, as well as the route of exposure (e.g., inhalation, ingestion, skin contact). They can cause illnesses ranging from mild to severe, and some can be fatal if not treated promptly and effectively.

Prevention and control measures for biological toxins include good hygiene practices, vaccination against certain toxin-producing bacteria, avoidance of contaminated food or water sources, and personal protective equipment (PPE) when handling or working with potential sources of toxins.

Galactosamine is not a medical condition but a chemical compound. Medically, it might be referred to in the context of certain medical tests or treatments. Here's the scientific definition:

Galactosamine is an amino sugar, a type of monosaccharide (simple sugar) that contains a functional amino group (-NH2) as well as a hydroxyl group (-OH). More specifically, galactosamine is a derivative of galactose, with the chemical formula C6H13NO5. It is an important component of many glycosaminoglycans (GAGs), which are complex carbohydrates found in animal tissues, particularly in connective tissue and cartilage.

In some medical applications, galactosamine has been used as a building block for the synthesis of GAG analogs or as a component of substrates for enzyme assays. It is also used in research to study various biological processes, such as cell growth and differentiation.

Antitoxins are substances, typically antibodies, that neutralize toxins produced by bacteria or other harmful organisms. They work by binding to the toxin molecules and rendering them inactive, preventing them from causing harm to the body. Antitoxins can be produced naturally by the immune system during an infection, or they can be administered artificially through immunization or passive immunotherapy. In a medical context, antitoxins are often used as a treatment for certain types of bacterial infections, such as diphtheria and botulism, to help counteract the effects of the toxins produced by the bacteria.

Salmonella typhi is a bacterium that causes typhoid fever, a severe and sometimes fatal infectious disease. It is a human-specific pathogen, which means it only infects humans and is not carried in animals or birds. The bacteria are spread through the fecal-oral route, often through contaminated food or water. Once ingested, Salmonella typhi can invade the intestinal tract, causing symptoms such as high fever, headache, abdominal pain, constipation, and rose-colored spots on the chest. If left untreated, typhoid fever can lead to serious complications, including intestinal perforation, bacteremia, and death.

I'm sorry for any confusion, but "textiles" is not a term that is typically used in a medical context. In general, textiles refer to the broad category of flexible materials made by weaving, knitting, braiding, or felting fibers together. They include things like clothing, upholstery, and other soft goods.

In a medical setting, terms such as "medical textiles" or "healthcare textiles" might be used to refer to textile-based products that are specifically designed for use in medical applications, such as bandages, wound dressings, sutures, and implantable materials. These products must meet strict regulatory requirements to ensure their safety and effectiveness.

However, it's important to note that while some healthcare professionals may be familiar with the term "textiles" in this context, it is not a standard medical term and would not be used in a formal medical definition.

Fever, also known as pyrexia or febrile response, is a common medical sign characterized by an elevation in core body temperature above the normal range of 36.5-37.5°C (97.7-99.5°F) due to a dysregulation of the body's thermoregulatory system. It is often a response to an infection, inflammation, or other underlying medical conditions, and it serves as a part of the immune system's effort to combat the invading pathogens or to repair damaged tissues.

Fevers can be classified based on their magnitude:

* Low-grade fever: 37.5-38°C (99.5-100.4°F)
* Moderate fever: 38-39°C (100.4-102.2°F)
* High-grade or severe fever: above 39°C (102.2°F)

It is important to note that a single elevated temperature reading does not necessarily indicate the presence of a fever, as body temperature can fluctuate throughout the day and can be influenced by various factors such as physical activity, environmental conditions, and the menstrual cycle in females. The diagnosis of fever typically requires the confirmation of an elevated core body temperature on at least two occasions or a consistently high temperature over a period of time.

While fevers are generally considered beneficial in fighting off infections and promoting recovery, extremely high temperatures or prolonged febrile states may necessitate medical intervention to prevent potential complications such as dehydration, seizures, or damage to vital organs.

Drug contamination refers to the presence of impurities or foreign substances in a pharmaceutical drug or medication. These impurities can include things like bacteria, chemicals, or other drugs that are not intended to be present in the final product. Drug contamination can occur at any stage during the production, storage, or distribution of a medication and can potentially lead to reduced effectiveness, increased side effects, or serious health risks for patients. It is closely monitored and regulated by various health authorities to ensure the safety and efficacy of medications.

Cotton fiber is not a medical term, but I can provide you with some information about cotton fibers in a general context.

Cotton fibers are soft, fluffy staple fibers that grow in a protective case called a boll around the seeds of cotton plants. Cotton fibers are primarily composed of cellulose, which is an organic compound and the main structural component of plant cells. These fibers are typically spun into yarn or thread and used to make a wide variety of textiles, including clothing and other soft goods.

Cotton fibers have some unique properties that make them suitable for medical applications as well:

1. Hypoallergenic: Cotton is generally considered hypoallergenic, meaning it is less likely to cause an allergic reaction compared to other materials. This makes cotton a popular choice for medical bandages, swabs, and other products that come into contact with the skin.
2. Absorbent: Cotton fibers are highly absorbent, which can be useful in medical settings for managing wounds, incontinence, or excessive sweating.
3. Breathable: Cotton is a breathable material, allowing air to pass through and helping to maintain a comfortable body temperature. This property makes cotton an excellent choice for medical garments, bedding, and other products that require good ventilation.
4. Comfortable: Cotton fibers are soft, lightweight, and gentle on the skin, making them a preferred material for medical textiles and clothing designed for people with sensitive skin or medical conditions like eczema or dermatitis.
5. Durable: Although cotton fibers can be delicate when wet, they are relatively strong and durable in dry conditions. This makes cotton an appropriate choice for reusable medical products like gowns, scrubs, and linens.

Sepsis is a life-threatening condition that arises when the body's response to an infection injures its own tissues and organs. It is characterized by a whole-body inflammatory state (systemic inflammation) that can lead to blood clotting issues, tissue damage, and multiple organ failure.

Sepsis happens when an infection you already have triggers a chain reaction throughout your body. Infections that lead to sepsis most often start in the lungs, urinary tract, skin, or gastrointestinal tract.

Sepsis is a medical emergency. If you suspect sepsis, seek immediate medical attention. Early recognition and treatment of sepsis are crucial to improve outcomes. Treatment usually involves antibiotics, intravenous fluids, and may require oxygen, medication to raise blood pressure, and corticosteroids. In severe cases, surgery may be required to clear the infection.

Medical Definition:

Lethal Dose 50 (LD50) is a standard measurement in toxicology that refers to the estimated amount or dose of a substance, which if ingested, injected, inhaled, or absorbed through the skin by either human or animal, would cause death in 50% of the test population. It is expressed as the mass of a substance per unit of body weight (mg/kg, μg/kg, etc.). LD50 values are often used to compare the toxicity of different substances and help determine safe dosage levels.

Interleukin-1 (IL-1) is a type of cytokine, which are proteins that play a crucial role in cell signaling. Specifically, IL-1 is a pro-inflammatory cytokine that is involved in the regulation of immune and inflammatory responses in the body. It is produced by various cells, including monocytes, macrophages, and dendritic cells, in response to infection or injury.

IL-1 exists in two forms, IL-1α and IL-1β, which have similar biological activities but are encoded by different genes. Both forms of IL-1 bind to the same receptor, IL-1R, and activate intracellular signaling pathways that lead to the production of other cytokines, chemokines, and inflammatory mediators.

IL-1 has a wide range of biological effects, including fever induction, activation of immune cells, regulation of hematopoiesis (the formation of blood cells), and modulation of bone metabolism. Dysregulation of IL-1 production or activity has been implicated in various inflammatory diseases, such as rheumatoid arthritis, gout, and inflammatory bowel disease. Therefore, IL-1 is an important target for the development of therapies aimed at modulating the immune response and reducing inflammation.

I'm sorry for any confusion, but "Textile Industry" and "medical definition" are not related. The textile industry is the overall system of designing, producing, and distributing clothing and their raw materials, which include fiber, yarn, and cloth. It involves several processes such as spinning, weaving, knitting, dyeing, and finishing.

If you're looking for a medical term or definition, please provide me with the term so I can assist you better.

Interleukin-6 (IL-6) is a cytokine, a type of protein that plays a crucial role in communication between cells, especially in the immune system. It is produced by various cells including T-cells, B-cells, fibroblasts, and endothelial cells in response to infection, injury, or inflammation.

IL-6 has diverse effects on different cell types. In the immune system, it stimulates the growth and differentiation of B-cells into plasma cells that produce antibodies. It also promotes the activation and survival of T-cells. Moreover, IL-6 plays a role in fever induction by acting on the hypothalamus to raise body temperature during an immune response.

In addition to its functions in the immune system, IL-6 has been implicated in various physiological processes such as hematopoiesis (the formation of blood cells), bone metabolism, and neural development. However, abnormal levels of IL-6 have also been associated with several diseases, including autoimmune disorders, chronic inflammation, and cancer.

Bacterial translocation is a medical condition that refers to the migration and establishment of bacteria from the gastrointestinal tract to normally sterile sites inside the body, such as the mesenteric lymph nodes, bloodstream, or other organs. This phenomenon is most commonly associated with impaired intestinal barrier function, which can occur in various clinical settings, including severe trauma, burns, sepsis, major surgery, and certain gastrointestinal diseases like inflammatory bowel disease (IBD) and liver cirrhosis.

The translocation of bacteria from the gut to other sites can lead to systemic inflammation, sepsis, and multiple organ dysfunction syndrome (MODS), which can be life-threatening in severe cases. The underlying mechanisms of bacterial translocation are complex and involve several factors, such as changes in gut microbiota, increased intestinal permeability, impaired immune function, and altered intestinal motility.

Preventing bacterial translocation is an important goal in the management of patients at risk for this condition, and strategies may include optimizing nutritional support, maintaining adequate fluid and electrolyte balance, using probiotics or antibiotics to modulate gut microbiota, and promoting intestinal barrier function through various pharmacological interventions.

I believe there may be some confusion in your question. "Rabbits" is a common name used to refer to the Lagomorpha species, particularly members of the family Leporidae. They are small mammals known for their long ears, strong legs, and quick reproduction.

However, if you're referring to "rabbits" in a medical context, there is a term called "rabbit syndrome," which is a rare movement disorder characterized by repetitive, involuntary movements of the fingers, resembling those of a rabbit chewing. It is also known as "finger-chewing chorea." This condition is usually associated with certain medications, particularly antipsychotics, and typically resolves when the medication is stopped or adjusted.

Cytokines are a broad and diverse category of small signaling proteins that are secreted by various cells, including immune cells, in response to different stimuli. They play crucial roles in regulating the immune response, inflammation, hematopoiesis, and cellular communication.

Cytokines mediate their effects by binding to specific receptors on the surface of target cells, which triggers intracellular signaling pathways that ultimately result in changes in gene expression, cell behavior, and function. Some key functions of cytokines include:

1. Regulating the activation, differentiation, and proliferation of immune cells such as T cells, B cells, natural killer (NK) cells, and macrophages.
2. Coordinating the inflammatory response by recruiting immune cells to sites of infection or tissue damage and modulating their effector functions.
3. Regulating hematopoiesis, the process of blood cell formation in the bone marrow, by controlling the proliferation, differentiation, and survival of hematopoietic stem and progenitor cells.
4. Modulating the development and function of the nervous system, including neuroinflammation, neuroprotection, and neuroregeneration.

Cytokines can be classified into several categories based on their structure, function, or cellular origin. Some common types of cytokines include interleukins (ILs), interferons (IFNs), tumor necrosis factors (TNFs), chemokines, colony-stimulating factors (CSFs), and transforming growth factors (TGFs). Dysregulation of cytokine production and signaling has been implicated in various pathological conditions, such as autoimmune diseases, chronic inflammation, cancer, and neurodegenerative disorders.

Macrophages are a type of white blood cell that are an essential part of the immune system. They are large, specialized cells that engulf and destroy foreign substances, such as bacteria, viruses, parasites, and fungi, as well as damaged or dead cells. Macrophages are found throughout the body, including in the bloodstream, lymph nodes, spleen, liver, lungs, and connective tissues. They play a critical role in inflammation, immune response, and tissue repair and remodeling.

Macrophages originate from monocytes, which are a type of white blood cell produced in the bone marrow. When monocytes enter the tissues, they differentiate into macrophages, which have a larger size and more specialized functions than monocytes. Macrophages can change their shape and move through tissues to reach sites of infection or injury. They also produce cytokines, chemokines, and other signaling molecules that help coordinate the immune response and recruit other immune cells to the site of infection or injury.

Macrophages have a variety of surface receptors that allow them to recognize and respond to different types of foreign substances and signals from other cells. They can engulf and digest foreign particles, bacteria, and viruses through a process called phagocytosis. Macrophages also play a role in presenting antigens to T cells, which are another type of immune cell that helps coordinate the immune response.

Overall, macrophages are crucial for maintaining tissue homeostasis, defending against infection, and promoting wound healing and tissue repair. Dysregulation of macrophage function has been implicated in a variety of diseases, including cancer, autoimmune disorders, and chronic inflammatory conditions.

Environmental monitoring is the systematic and ongoing surveillance, measurement, and assessment of environmental parameters, pollutants, or other stressors in order to evaluate potential impacts on human health, ecological systems, or compliance with regulatory standards. This process typically involves collecting and analyzing data from various sources, such as air, water, soil, and biota, and using this information to inform decisions related to public health, environmental protection, and resource management.

In medical terms, environmental monitoring may refer specifically to the assessment of environmental factors that can impact human health, such as air quality, water contamination, or exposure to hazardous substances. This type of monitoring is often conducted in occupational settings, where workers may be exposed to potential health hazards, as well as in community-based settings, where environmental factors may contribute to public health issues. The goal of environmental monitoring in a medical context is to identify and mitigate potential health risks associated with environmental exposures, and to promote healthy and safe environments for individuals and communities.

Occupational exposure refers to the contact of an individual with potentially harmful chemical, physical, or biological agents as a result of their job or occupation. This can include exposure to hazardous substances such as chemicals, heavy metals, or dusts; physical agents such as noise, radiation, or ergonomic stressors; and biological agents such as viruses, bacteria, or fungi.

Occupational exposure can occur through various routes, including inhalation, skin contact, ingestion, or injection. Prolonged or repeated exposure to these hazards can increase the risk of developing acute or chronic health conditions, such as respiratory diseases, skin disorders, neurological damage, or cancer.

Employers have a legal and ethical responsibility to minimize occupational exposures through the implementation of appropriate control measures, including engineering controls, administrative controls, personal protective equipment, and training programs. Regular monitoring and surveillance of workers' health can also help identify and prevent potential health hazards in the workplace.

The liver is a large, solid organ located in the upper right portion of the abdomen, beneath the diaphragm and above the stomach. It plays a vital role in several bodily functions, including:

1. Metabolism: The liver helps to metabolize carbohydrates, fats, and proteins from the food we eat into energy and nutrients that our bodies can use.
2. Detoxification: The liver detoxifies harmful substances in the body by breaking them down into less toxic forms or excreting them through bile.
3. Synthesis: The liver synthesizes important proteins, such as albumin and clotting factors, that are necessary for proper bodily function.
4. Storage: The liver stores glucose, vitamins, and minerals that can be released when the body needs them.
5. Bile production: The liver produces bile, a digestive juice that helps to break down fats in the small intestine.
6. Immune function: The liver plays a role in the immune system by filtering out bacteria and other harmful substances from the blood.

Overall, the liver is an essential organ that plays a critical role in maintaining overall health and well-being.

Cortisone is a type of corticosteroid hormone that is produced naturally in the body by the adrenal gland. It is released in response to stress and helps to regulate metabolism, reduce inflammation, and suppress the immune system. Cortisone can also be synthetically produced and is often used as a medication to treat a variety of conditions such as arthritis, asthma, and skin disorders. It works by mimicking the effects of the natural hormone in the body and reducing inflammation and suppressing the immune system. Cortisone can be administered through various routes, including oral, injectable, topical, and inhalational.

I'm sorry for any confusion, but "housing" is not a term that has a medical definition. In a general sense, housing refers to a place where someone lives, such as a house or apartment. If you have any questions related to healthcare, medicine, or health-related topics, I would be happy to try to help answer them.

Inhalation exposure is a term used in occupational and environmental health to describe the situation where an individual breathes in substances present in the air, which could be gases, vapors, fumes, mist, or particulate matter. These substances can originate from various sources, such as industrial processes, chemical reactions, or natural phenomena.

The extent of inhalation exposure is determined by several factors, including:

1. Concentration of the substance in the air
2. Duration of exposure
3. Frequency of exposure
4. The individual's breathing rate
5. The efficiency of the individual's respiratory protection, if any

Inhalation exposure can lead to adverse health effects, depending on the toxicity and concentration of the inhaled substances. Short-term or acute health effects may include irritation of the eyes, nose, throat, or lungs, while long-term or chronic exposure can result in more severe health issues, such as respiratory diseases, neurological disorders, or cancer.

It is essential to monitor and control inhalation exposures in occupational settings to protect workers' health and ensure compliance with regulatory standards. Various methods are employed for exposure assessment, including personal air sampling, area monitoring, and biological monitoring. Based on the results of these assessments, appropriate control measures can be implemented to reduce or eliminate the risks associated with inhalation exposure.

Inflammation is a complex biological response of tissues to harmful stimuli, such as pathogens, damaged cells, or irritants. It is characterized by the following signs: rubor (redness), tumor (swelling), calor (heat), dolor (pain), and functio laesa (loss of function). The process involves the activation of the immune system, recruitment of white blood cells, and release of inflammatory mediators, which contribute to the elimination of the injurious stimuli and initiation of the healing process. However, uncontrolled or chronic inflammation can also lead to tissue damage and diseases.

Neutrophils are a type of white blood cell that are part of the immune system's response to infection. They are produced in the bone marrow and released into the bloodstream where they circulate and are able to move quickly to sites of infection or inflammation in the body. Neutrophils are capable of engulfing and destroying bacteria, viruses, and other foreign substances through a process called phagocytosis. They are also involved in the release of inflammatory mediators, which can contribute to tissue damage in some cases. Neutrophils are characterized by the presence of granules in their cytoplasm, which contain enzymes and other proteins that help them carry out their immune functions.

Thorium dioxide, also known as thorium(IV) oxide or Thorotrast, is a radioactive compound with the chemical formula ThO2. It is a white, odorless, tasteless powder that is insoluble in water and most organic solvents.

Thorium dioxide was historically used as a contrast agent for X-ray radiography, particularly for angiography and myelography, due to its high density and radioopacity. However, its use has been discontinued in many countries due to the recognition of its harmful health effects. Long-term exposure to thorium dioxide can lead to fibrosis, cancer, and other radiation-induced diseases.

It is important to note that the handling and disposal of thorium dioxide require special precautions due to its radioactivity and potential health hazards.

'C3H' is the name of an inbred strain of laboratory mice that was developed at the Jackson Laboratory in Bar Harbor, Maine. The mice are characterized by their uniform genetic background and have been widely used in biomedical research for many decades.

The C3H strain is particularly notable for its susceptibility to certain types of cancer, including mammary tumors and lymphomas. It also has a high incidence of age-related macular degeneration and other eye diseases. The strain is often used in studies of immunology, genetics, and carcinogenesis.

Like all inbred strains, the C3H mice are the result of many generations of brother-sister matings, which leads to a high degree of genetic uniformity within the strain. This makes them useful for studying the effects of specific genes or environmental factors on disease susceptibility and other traits. However, it also means that they may not always be representative of the genetic diversity found in outbred populations, including humans.

Kupffer cells are specialized macrophages that reside in the liver, particularly in the sinusoids of the liver's blood circulation system. They play a crucial role in the immune system by engulfing and destroying bacteria, microorganisms, and other particles that enter the liver via the portal vein. Kupffer cells also contribute to the clearance of damaged red blood cells, iron metabolism, and the regulation of inflammation in the liver. They are named after the German pathologist Karl Wilhelm von Kupffer who first described them in 1876.

A lung is a pair of spongy, elastic organs in the chest that work together to enable breathing. They are responsible for taking in oxygen and expelling carbon dioxide through the process of respiration. The left lung has two lobes, while the right lung has three lobes. The lungs are protected by the ribcage and are covered by a double-layered membrane called the pleura. The trachea divides into two bronchi, which further divide into smaller bronchioles, leading to millions of tiny air sacs called alveoli, where the exchange of gases occurs.

Disseminated Intravascular Coagulation (DIC) is a complex medical condition characterized by the abnormal activation of the coagulation cascade, leading to the formation of blood clots in small blood vessels throughout the body. This process can result in the consumption of clotting factors and platelets, which can then lead to bleeding complications. DIC can be caused by a variety of underlying conditions, including sepsis, trauma, cancer, and obstetric emergencies.

The term "disseminated" refers to the widespread nature of the clotting activation, while "intravascular" indicates that the clotting is occurring within the blood vessels. The condition can manifest as both bleeding and clotting complications, which can make it challenging to diagnose and manage.

The diagnosis of DIC typically involves laboratory tests that evaluate coagulation factors, platelet count, fibrin degradation products, and other markers of coagulation activation. Treatment is focused on addressing the underlying cause of the condition while also managing any bleeding or clotting complications that may arise.

"Intraperitoneal injection" is a medical term that refers to the administration of a substance or medication directly into the peritoneal cavity, which is the space between the lining of the abdominal wall and the organs contained within it. This type of injection is typically used in clinical settings for various purposes, such as delivering chemotherapy drugs, anesthetics, or other medications directly to the abdominal organs.

The procedure involves inserting a needle through the abdominal wall and into the peritoneal cavity, taking care to avoid any vital structures such as blood vessels or nerves. Once the needle is properly positioned, the medication can be injected slowly and carefully to ensure even distribution throughout the cavity.

It's important to note that intraperitoneal injections are typically reserved for situations where other routes of administration are not feasible or effective, as they carry a higher risk of complications such as infection, bleeding, or injury to surrounding organs. As with any medical procedure, it should only be performed by trained healthcare professionals under appropriate clinical circumstances.

Gram-negative bacteria are a type of bacteria that do not retain the crystal violet stain used in the Gram staining method, a standard technique used in microbiology to classify and identify different types of bacteria based on their structural differences. This method was developed by Hans Christian Gram in 1884.

The primary characteristic distinguishing Gram-negative bacteria from Gram-positive bacteria is the composition and structure of their cell walls:

1. Cell wall: Gram-negative bacteria have a thin peptidoglycan layer, making it more susceptible to damage and less rigid compared to Gram-positive bacteria.
2. Outer membrane: They possess an additional outer membrane that contains lipopolysaccharides (LPS), which are endotoxins that can trigger strong immune responses in humans and animals. The outer membrane also contains proteins, known as porins, which form channels for the passage of molecules into and out of the cell.
3. Periplasm: Between the inner and outer membranes lies a compartment called the periplasm, where various enzymes and other molecules are located.

Some examples of Gram-negative bacteria include Escherichia coli (E. coli), Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella enterica, Shigella spp., and Neisseria meningitidis. These bacteria are often associated with various infections, such as urinary tract infections, pneumonia, sepsis, and meningitis. Due to their complex cell wall structure, Gram-negative bacteria can be more resistant to certain antibiotics, making them a significant concern in healthcare settings.

In the field of medicine, "time factors" refer to the duration of symptoms or time elapsed since the onset of a medical condition, which can have significant implications for diagnosis and treatment. Understanding time factors is crucial in determining the progression of a disease, evaluating the effectiveness of treatments, and making critical decisions regarding patient care.

For example, in stroke management, "time is brain," meaning that rapid intervention within a specific time frame (usually within 4.5 hours) is essential to administering tissue plasminogen activator (tPA), a clot-busting drug that can minimize brain damage and improve patient outcomes. Similarly, in trauma care, the "golden hour" concept emphasizes the importance of providing definitive care within the first 60 minutes after injury to increase survival rates and reduce morbidity.

Time factors also play a role in monitoring the progression of chronic conditions like diabetes or heart disease, where regular follow-ups and assessments help determine appropriate treatment adjustments and prevent complications. In infectious diseases, time factors are crucial for initiating antibiotic therapy and identifying potential outbreaks to control their spread.

Overall, "time factors" encompass the significance of recognizing and acting promptly in various medical scenarios to optimize patient outcomes and provide effective care.

I'm sorry for any confusion, but "Horseshoe Crabs" are not a medical term or a medical condition. They are actually marine arthropods that have survived for over 450 million years, and are found primarily in the Atlantic Ocean, especially around the Gulf of Mexico and the eastern seaboard of the United States.

However, Horseshoe Crabs do have a significant role in the medical field, particularly in the production of Limulus amebocyte lysate (LAL), which is used to test for bacterial endotoxins in medical equipment and injectable drugs. The blood of Horseshoe Crabs contains amebocytes, which can clot in response to endotoxins found in gram-negative bacteria. This reaction forms a gel-like clot that can be detected and measured, providing a crucial tool for ensuring the sterility of medical products.

So while "Horseshoe Crabs" are not a medical term per se, they do have an important place in medical research and production.

"Serratia marcescens" is a medically significant species of gram-negative, facultatively anaerobic, motile bacillus bacteria that belongs to the family Enterobacteriaceae. It is commonly found in soil, water, and in the gastrointestinal tracts of humans and animals. The bacteria are known for their ability to produce a red pigment called prodigiosin, which gives them a distinctive pink color on many types of laboratory media.

"Serratia marcescens" can cause various types of infections, including respiratory tract infections, urinary tract infections, wound infections, and bacteremia (bloodstream infections). It is also known to be an opportunistic pathogen, which means that it primarily causes infections in individuals with weakened immune systems, such as those with chronic illnesses or who are undergoing medical treatments that suppress the immune system.

In healthcare settings, "Serratia marcescens" can cause outbreaks of infection, particularly in patients who are hospitalized for extended periods of time. It is resistant to many commonly used antibiotics, which makes it difficult to treat and control the spread of infections caused by this organism.

In addition to its medical significance, "Serratia marcescens" has also been used as a model organism in various areas of microbiological research, including studies on bacterial motility, biofilm formation, and antibiotic resistance.

Monocytes are a type of white blood cell that are part of the immune system. They are large cells with a round or oval shape and a nucleus that is typically indented or horseshoe-shaped. Monocytes are produced in the bone marrow and then circulate in the bloodstream, where they can differentiate into other types of immune cells such as macrophages and dendritic cells.

Monocytes play an important role in the body's defense against infection and tissue damage. They are able to engulf and digest foreign particles, microorganisms, and dead or damaged cells, which helps to clear them from the body. Monocytes also produce cytokines, which are signaling molecules that help to coordinate the immune response.

Elevated levels of monocytes in the bloodstream can be a sign of an ongoing infection, inflammation, or other medical conditions such as cancer or autoimmune disorders.

Byssinosis is a respiratory condition that primarily affects textile workers who are exposed to high levels of cotton, flax, or hemp dust. It's also known as brown lung disease. The medical definition of byssinosis is:

A restrictive lung disease characterized by chest tightness, cough, and shortness of breath that typically occurs in workers exposed to high levels of organic dust from cotton, flax, or hemp. The symptoms usually appear after the first day of exposure (known as "Monday fever") and improve with continued exposure during the week, only to recur again at the beginning of the next workweek. Chronic byssinosis can lead to progressive shortness of breath, chronic cough, and significant lung function impairment. The exact mechanism by which the dust causes the disease is not fully understood but may involve an immune response or direct toxicity to the airways.

Drug tolerance is a medical concept that refers to the decreased response to a drug following its repeated use, requiring higher doses to achieve the same effect. This occurs because the body adapts to the presence of the drug, leading to changes in the function or expression of targets that the drug acts upon, such as receptors or enzymes. Tolerance can develop to various types of drugs, including opioids, benzodiazepines, and alcohol, and it is often associated with physical dependence and addiction. It's important to note that tolerance is different from resistance, which refers to the ability of a pathogen to survive or grow in the presence of a drug, such as antibiotics.

Delta endotoxins (δ-endotoxins) are pore-forming toxins produced by Bacillus thuringiensis species of bacteria. They are useful ... Once activated, the endotoxin binds to the gut epithelium and causes cell lysis by the formation of cation-selective channels, ... Specific delta-endotoxins that have been inserted with genetic engineering include Cry3Bb1 found in MON 863 and Cry1Ab found in ... Plants with two kinds of delta endotoxins tend to make resistance happen slower, as the insects have to evolve to overcome both ...
Raetz C, Whitfield C (2002). "Lipopolysaccharide endotoxins". Annu Rev Biochem. 71: 635-700. doi:10.1146/annurev.biochem. ...
Raetz C. Whitfield C (2002). "Lipopolysaccharide endotoxins". Annu Rev Biochem. 71: 635-700. doi:10.1146/annurev.biochem. ...
... is a lipid component of an endotoxin held responsible for the toxicity of gram-negative bacteria. It is the innermost ... Beutler, B.; Poltorak, A. (2001-04-01). "The sole gateway to endotoxin response: how LPS was identified as Tlr4, and its role ... Tzeng YL, Datta A, Kolli VK, Carlson RW, Stephens DS (May 2002). "Endotoxin of Neisseria meningitidis composed only of intact ... Raetz C, Whitfield C (2002). "Lipopolysaccharide endotoxins". Annu Rev Biochem. 71 (1): 635-700. doi:10.1146/annurev.biochem. ...
Raetz CR, Whitfield C (2002). "Lipopolysaccharide endotoxins". Annu. Rev. Biochem. 71: 635-700. doi:10.1146/annurev.biochem. ... outer membrane of many gram-negative bacteria includes a complex lipopolysaccharide whose lipid portion acts as an endotoxin - ...
"Biosynthesis of endotoxins. Purification and catalytic properties of 3-deoxy-D-manno-octulosonic acid transferase from ...
"Biosynthesis of endotoxins. Purification and catalytic properties of 3-deoxy-D-manno-octulosonic acid transferase from ...
Raetz CR (1990). "Biochemistry of endotoxins". Annu. Rev. Biochem. 59: 129-70. doi:10.1146/annurev.bi.59.070190.001021. PMID ...
Kagan, Jonathan C. (2013-09-13). "Sensing Endotoxins from Within". Science. 341 (6151): 1184-1185. Bibcode:2013Sci...341.1184K ...
... and endotoxins. The role of the toxins identified in the process of melioidosis symptom development has not been fully ...
To test a sample for endotoxins, it is mixed with lysate and water; endotoxins are present if coagulation occurs. There are ... decided to cancel the proposal to include recombinant technology for endotoxin testing in chapter 85, Bacterial Endotoxins, and ... Proper endotoxin recovery must be proven before LAL can be used to release product. The LAL test is a major source of animal ... The LAL cascade is also triggered by (1,3)-β-D-glucan, via a different Factor G. Both bacterial endotoxins and (1,3)-β-D-glucan ...
Esmon CT (2004). "Coagulation and inflammation". J. Endotoxin Res. 9 (3): 192-8. doi:10.1179/096805103125001603. PMID 12831462 ...
... responses to endotoxin; and the epidemiology of suicide. He co-authored several books on surgery and trauma, including the well ... Total parenteral nutrition and bowel rest modify the metabolic response to endotoxin in humans. Ann Surg 210: 449-456 (PMID ... Total parenteral nutrition and bowel rest modify the metabolic response to endotoxin in humans. Ann Surg 210: 449-456 (PMID ... The acute splanchnic and peripheral tissue metabolic response to endotoxin in humans. J Clin Invest 85: 1896-1904 (PMID 2347917 ...
Rietschel, Ernst T.; Westphal, Otto (1999). "Endotoxin: Historical Perspectives". In Brade, Helmut (ed.). Endotoxin in Health ...
Czura CJ, Wang H, Tracey KJ (2001). "Dual roles for HMGB1: DNA binding and cytokine". J. Endotoxin Res. 7 (4): 315-21. doi: ...
Endotoxin Res. 9 (1): 55-9. doi:10.1179/096805103125001351. PMID 12691620. Georgel P, Naitza S, Kappler C, Ferrandon D, et al ...
The gene then codes for delta endotoxins (Cry proteins) which are toxins that are very potent and provoke lesions in the cell ... Specificity of Bacillius thuringiensis delta-endotoxins. Eur J Biochem 186: 239-247. ISAAA. 2009. Executive Summary Global ...
At the University of Minnesota, Watson did research on several diseases, but his discoveries about endotoxin shock might be his ... Watson, Dennis W.; Kim, Yoon Berm (1963). "Modification of Host Responses to Bacterial Endotoxins". Journal of Experimental ...
... is unrelated to Bt delta-endotoxins. It is an aegerolysin (Pfam PF06355) composed of two beta sheets in a beta- ...
The most common pyrogens are endotoxins, which are lipopolysaccharides (LPS) produced by Gram-negative bacteria such as E. coli ... 1030 decreased endotoxin effects;: 1029 and increased proliferation of T cells.: 1030 : 212 Having a fever response in response ...
A prime example of such a foreign ligand is bacterial endotoxin, whose effects have been known for generations. When it enters ... Journal of Endotoxin Research. 6 (5): 401-5. doi:10.1177/09680519000060050101. PMID 11521063. Lien E, Ingalls RR (January 2002 ...
Journal of Endotoxin Research. 7 (4): 310-4. doi:10.1177/09680519010070040201. PMID 11717588. "Icos Psoriasis Treatment Falls ...
Rietschel, Ernst Th; Cavaillon, Jean-Marc (2002). "Endotoxin and anti-endotoxin. The contribution of the schools of Koch and ... Journal of Endotoxin Research. 8 (2): 71-82. doi:10.1179/096805102125000218. PMID 12028747. Leibowitz, D. (1993). "Scientific ...
Journal of Endotoxin Research. 9 (4): 264-8. doi:10.1177/09680519030090040801. PMID 12935358. S2CID 208323243. Patel VB, ...
Bruce A. Beutler on Nobelprize.org including the Nobel lecture How Mammals Sense Infection: From Endotoxin to the Toll-like ... Of still greater importance, Beutler demonstrated that TNF acted as a key mediator of endotoxin-induced shock. This he ... Sultzer, B. M. (September 21, 1968). "Genetic control of leucocyte responses to endotoxin". Nature. 219 (5160): 1253-1254. ... also known as endotoxin). He did so by identifying spontaneous mutations in the gene coding for mouse Toll-like receptor 4 ( ...
... and endotoxin". The Journal of Biological Chemistry. 275 (27): 20260-20267. doi:10.1074/jbc.M909168199. ISSN 0021-9258. PMID ... Journal of Endotoxin Research. 6 (5): 401-405. doi:10.1179/096805100101532243. PMID 11521063. Liu, Chao; Gelius, Eva; Liu, Gang ... Journal of Endotoxin Research. 5 (1-2): 56-61. doi:10.1177/09680519990050010201. ISSN 0968-0519. S2CID 85796229. Dziarski, R.; ...
Alexander C, Rietschel ET (2001). "Bacterial lipopolysaccharides and innate immunity". Journal of Endotoxin Research. 7 (3): ...
They include potent neurotoxins, hepatotoxins, cytotoxins, and endotoxins. Despite the similarity in name, they are unrelated ... endotoxins). Most cyanotoxins have a number of variants (analogues). As of 1999, altogether over 84 cyanotoxins were known and ...
... is one of the delta endotoxins produced by this bacterium which act as insecticides. Because of this, the genes for ... Subsequently, Bt cotton has added other delta endotoxins. Products such as Bt cotton, Bt brinjal and genetically modified maize ...
"toxin" at Dorland's Medical Dictionary Brade, Helmut (1999). Endotoxin in Health and Disease. CRC Press. ISBN 9780824719449. ... or endotoxins, which are released mainly when bacteria are lysed. The term "biotoxin" is sometimes used to explicitly confirm ...
Today, the term endotoxin is often used synonymously with LPS, although there are a few endotoxins (in the original sense of ... Opal SM (2010). "Endotoxins and other sepsis triggers". Endotoxemia and Endotoxin Shock. Contributions to Nephrology. Vol. 167 ... Epidemiological studies have shown that increased endotoxin load, which can be a result of increased populations of endotoxin- ... The presumed mechanism for the association of endotoxin with obesity is that endotoxin induces an inflammation-mediated pathway ...
Lipid A is an endotoxin. Endotoxins trigger intense inflammation. They bind to receptors on monocytes causing the release of ... These are divided into two groups: endotoxins and exotoxins. Endotoxin is a component (lipopolysaccharide (LPS)) of the cell ... As glycolipids (as opposed to peptides), endotoxins are not bound by B or T-cell receptors and do not elicit an adaptive immune ... Some are chromosomally encoded and intrinsic to the bacteria (e.g. capsules and endotoxin), whereas others are obtained from ...
Exotoxins are generated and actively secreted; endotoxins remain part of the bacteria. Usually, an endotoxin is part of the ... Endotoxins most commonly refer to the lipopolysaccharide (LPS) or lipooligosaccharide (LOS) that are in the outer plasma ... Endotoxins most commonly refer to the lipopolysaccharide (LPS) or lipooligosaccharide (LOS) that are in the outer plasma ... The body's response to an endotoxin can involve severe inflammation. In general, the inflammation process is usually considered ...
Endotoxins are an up-regulator of the gene coding for ferritin, thus causing the concentration of ferritin to rise. By contrast ... Journal of Endotoxin Research. 11 (5): 267-80. doi:10.1179/096805105X58698. PMID 16262999. Larade K, Storey KB (March 2004). " ... organisms such as Pseudomonas, although possessing endotoxin, cause plasma ferritin levels to drop significantly within the ...
Endotoxin and immune activation in chronic heart failure: proof of concept. 3/1999: 2nd Prize; Young Investigator Award ( ... Cellular endotoxin desensitization in patients with severe chronic heart failure, November 2000. AHA Samuel A Levine Young ... Cellular endotoxin desensitization in patients with severe chronic heart failure. 2/2001: GlaxoSmithKline Respiratory Clinical ... Rauchhaus, M; Coats, AJ; Anker, SD (2000). "The endotoxin-lipoprotein hypothesis". Lancet. 356 (9233): 930-3. doi:10.1016/S0140 ...
Delta endotoxins (δ-endotoxins) are pore-forming toxins produced by Bacillus thuringiensis species of bacteria. They are useful ... Once activated, the endotoxin binds to the gut epithelium and causes cell lysis by the formation of cation-selective channels, ... Specific delta-endotoxins that have been inserted with genetic engineering include Cry3Bb1 found in MON 863 and Cry1Ab found in ... Plants with two kinds of delta endotoxins tend to make resistance happen slower, as the insects have to evolve to overcome both ...
... Clin Exp Allergy. 1995 Jan;25(1):73-9. doi: 10.1111/j.1365- ...
After a simple spin-wash step, the bound plasmid DNA is eluted in endotoxin-free water. Up to 250 μg of endotoxin-free plasmid ... The GenElute Endotoxin-free Plasmid Kit offers a simple, rapid, cost effective method for purifying plasmid DNA with ≤0.1 EU/μg ... Endotoxins are removed from the cleared lysate with simple extraction-phase separation steps. Plasmid DNA is further purified ... Endotoxins (also known as lipopolysaccharides or LPS) are often co-purified with plasmid DNA and significantly reduce ...
This document was developed as a special control to support the classification of the endotoxin assay into class II (special ... A falsely low endotoxin measurement could result in a determination that the patient is at a lower risk for sepsis, which could ... "An endotoxin assay is a device that uses serological techniques in whole blood. The device is intended for use in conjunction ... A falsely high endotoxin measurement could result in a determination that the patient is at a higher risk for sepsis, which ...
Endotoxins and their influence on transfection efficiency during CRISPR ...
Validation Of Endotoxin Testing For CAR T-cell Manufacturing Quality Control & Benefits of Cartridge Technology During ... Endotoxins can be detected reliably by the limulus amoebocyte lysate (LAL) test. Endosafe nexgen-PTS, (Charles River) is a ... Endotoxins are lipopolysaccharide molecules produced by gram-negative bacteria that can cause toxic reactions in patients and ... Materials used in cell manufacturing may interfere with the test and therefore validation of bacterial endotoxin testing (BET) ...
Significance and Use 5.1 The determination of endotoxin concentrations in MWF is a parameter that can be used in decision- ... Standard Practice for Determination of Endotoxin Concentrations in Water-Miscible Metalworking Fluids. ... 5.1 The determination of endotoxin concentrations in MWF is a parameter that can be used in decision-making for prudent fluid ... 1.5 This practice seeks to minimize inter-laboratory variation of endotoxin data but does not ensure uniformity of results. ...
KNOWN EFFECTS OF ENDOTOXINS AT THE CELLULAR LEVEL. Endotoxins are known to have strong immune stimulatory and proinflammatory ... ENDOTOXINS AND RESPIRATORY HEALTH; RESULTS FROM OCCUPATIONAL EPIDEMIOLOGY. Endotoxins can be found at higher concentrations in ... While some studies indicated an increased risk of asthma after endotoxin exposure, others have shown that endotoxin exposure ... making the use of an internal standard endotoxin necessary. The results of the test should be expressed as endotoxin units (EU ...
Low endotoxin, Azide free. Validated in WB, IHC and tested in Human. Cited in 4 publication(s). Independently reviewed in 1 ... Our Low endotoxin, azide-free formats have low endotoxin level (≤ 1 EU/ml, determined by the LAL assay) and are free from azide ... Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD14 antibody [EPR3653] - Low endotoxin, Azide free ... Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD14 antibody [EPR3653] - Low endotoxin, Azide free ...
This Biocompare article looks at best practices to reduce the risk of endotoxin contamination. ... Five Easy Ways to Keep Your Cell Cultures Endotoxin-Free , Reduce Endotoxin Contamination Risk , Corning. ... it is clear that endotoxin contamination remains a major source of concern. Whenever endotoxins are present, there will always ... Check that media and additives have been tested for endotoxins. Like standard FBS, most commercially prepared media are ...
RSSL becomes the first UK lab to offer a sustainable bacterial endotoxin test method ... RSSL has become the first UK laboratory to offer a sustainable bacterial endotoxin test method to the life sciences industry ... Reading Scientific Services Ltd (RSSL) has become the first UK laboratory to offer a sustainable bacterial endotoxin test (BET) ... PyroSmart NextGen™ is the result of years of research and development by leading endotoxin detection specialists, Associates of ...
Endotoxin Activity Assay (EAA), in measuring Endotoxin (ET) activity in septic patients. Findings show a significant ... Newly Developed Endotoxin Measurement Method (the Endotoxin Activity Assay) May Reflect the Severity of Sepsis () ... "Effectiveness of a Human Monoclonal Anti-Endotoxin Antibody (HA-1A) in Gram-Negative Sepsis: Relationship to Endotoxin and ... "Impact of Hepatic Clearance of Endotoxin Using Endotoxin Activity Assay," Hepatology International, Vol. 6, 2011, pp. 489-493. ...
Endotoxin removal Kit allows highly efficient endotoxin removal. ... Endotoxin Assay Kit is applicable to in vitro end-product ... Accurately determine endotoxin levels. End-product endotoxin qualitative detection. One-step end-product endotoxin qualitative ... Detect the endotoxin concentration in the water by using ToxinSensor Chromogenic LAL Endotoxin Assay Kit(Cat. No. L00350), and ... The Chromogenic LAL Endotoxin Assay kit can quantitatively detect endotoxin in a broad range (0.01-1 EU/ml). The Gel Clot ...
Low Endotoxin. Cat# MBS238154. Supplier: MyBiosource. Available at Gentaur Genprice in 5 to 7 Working Days. Place your Order ... MBS238154 , MOUSE IgG2a NEGATIVE CONTROL:Low Endotoxin. (No reviews yet) Write a Review Write a Review. ... MBS238154 , MOUSE IgG2a NEGATIVE CONTROL:Low Endotoxin MyBiosource Negative/Isotype Controls ... MBS238154 , MOUSE IgG2a NEGATIVE CONTROL:Low Endotoxin. Rating Required Select Rating. 1 star (worst). 2 stars. 3 stars ( ...
B in the induction of the IL-6 promoter in skeletal muscle cells by endotoxin (lipopolysaccharide [LPS]), tumor necrosis factor ... Endotoxin-induced IL-6 promoter activation in skeletal muscle requires an NF-κB site David Yeagley, Charles H ... Endotoxin-induced IL-6 promoter activation in skeletal muscle requires an NF-κB site. ... study was to examine the involvement of NF-κB in the induction of the IL-6 promoter in skeletal muscle cells by endotoxin ( ...
... plus low-dose alveolar endotoxin (10 micrograms/kg), and high-dose alveolar endotoxin alone (50-100 micrograms/kg). Alveolar ... Differential responses of the endothelial and epithelial barriers of the lung in sheep to Escherichia coli endotoxin.. J P ... E. coli endotoxin was administered according to one of three protocols: intravenous alone (5-500 micrograms/kg), intravenous (5 ... In spite of the marked chemotactic effect of alveolar endotoxin, there was no change in the permeability of the epithelial ...
BioVision develops and offers a wide variety of products including assay kits, antibodies, recombinant proteins & enzymes, and other innovative research tools for studying Apoptosis, Metabolism, Cell Proliferation, Cellular Stress, Cell Damage and Repair, Diabetes, Obesity and Metabolic Syndrome, Stem Cell Biology, Gene Regulation, Signal Transduction, etc. BioVisions products are currently being sold in more than 60 countries worldwide.
Endotoxin. Residual endotoxin contamination in advanced biotherapy products is an expensive and often difficult contaminant to ... increasing both endotoxin removal and protein recovery. Uniquely, we offer flow rate control for endotoxin removal in a ... In a centrifuge, the membrane pores dilate and the eluate, free of endotoxin, passes into the collection tube. The contact time ... Many commercially available protocols are unable to remove endotoxins effectively and are based on non-affinity chromatography ...
This article outlines various requirements of standards for endotoxin and elaborates on their definition as distinct from other ... Endotoxin-albumin complexes transfer endotoxin monomers to MD-2 resulting in activation of TLR4, Innate Immunity, Innate Immun ... As per USP ,11,, an impurity mixture labelled as a "natural endotoxin" is not endotoxin, but a mixture that may contain ... Todays Limulus-based tests are specific for endotoxin, not for cell wall or cytoplasmic constituents that are not endotoxin; ...
An assessment of endotoxin transfer will assist in further defining the risks associated with organ transplantation from donors ... Neisseria meningitidis Endotoxin and Capsule Transmission by Transplantation. Emerging Infectious Diseases. 2005;11(8):1326- ... Neisseria meningitidis Endotoxin and Capsule Transmission by Transplantation. Volume 11, Number 8-August 2005 ... Prospective studies identifying and quantifying endotoxin in the transplanted liver itself and in the recipient may be valuable ...
Inflammatory response after inhalation of bacterial endotoxin assessed by the induced sputum technique ... Inflammatory response after inhalation of bacterial endotoxin assessed by the induced sputum technique ... Inflammatory response after inhalation of bacterial endotoxin assessed by the induced sputum technique ...
Endotoxin induces nitric oxide (NO) production by NO synthase 2 (NOS2). To assess the role of NO and NOS2 in the impairment of ... Endotoxin induces nitric oxide (NO) production by NO synthase 2 (NOS2). To assess the role of NO and NOS2 in the impairment of ... After endotoxin challenge and LMBO, systemic oxygenation was impaired to a greater extent in wild-type than in NOS2-deficient ... Hypoxic pulmonary blood flow redistribution and arterial oxygenation in endotoxin-challenged NOS2-deficient mice J Clin Invest ...
... *Sensitive and specific method for ... A frequent contaminant, endotoxin, can cause fever, inflammation, headache, nausea, and even death. Found in the cell wall of ... The endotoxin concentration of negative controls (as determined by the extrapolation of the standard curve) should be ... The absorbance (A405) can be measured by the plate reader and is proportional to the endotoxin concentration in the sample. ...
Compounding Pharmacies and Bacterial Endotoxin Testing posted by RXinsider Staff ... Or what does this mean in terms of adherence to endotoxin testing requirements, or why do I even need to test for endotoxins. ... With guidelines changing, some helpful tips for compounding pharmacies on endotoxin testing requirements ... If your product now needs to be tested for endotoxins, you might have some questions and concerns about how to do this and why ...
Central and Systemic Endotoxin Challenges Exacerbate the Local Inflammatory Response and Increase Neuronal Death during Chronic ... Central and Systemic Endotoxin Challenges Exacerbate the Local Inflammatory Response and Increase Neuronal Death during Chronic ... Central and Systemic Endotoxin Challenges Exacerbate the Local Inflammatory Response and Increase Neuronal Death during Chronic ... Central and Systemic Endotoxin Challenges Exacerbate the Local Inflammatory Response and Increase Neuronal Death during Chronic ...
This application note explains how the ASSIST PLUS pipetting robot automates your ENDOZYME II GO endotoxin tests using ... Overview: Performing an endotoxin test using a rFC assay. The ASSIST PLUS is used to perform an ENDOZYME II GO endotoxin test ... Endotoxin-free borosilicate glass test tubes with aluminum screw cap. Ideal vessels for samples and the dilution of endotoxin ... Automated endotoxin test with ASSIST PLUS The ENDOZYME® II GO kit was developed by bioMérieux. It includes a novel 96 well ...
Detection of endotoxins in engineered nanomaterials represents one of the grand challenges in the field of nanomedicine. Here, ... To prepare a 05 endotoxin unit per milliliter quality control, combines 50 microliter of the one endotoxin unit per milliliter ... To prepare a 05 endotoxin unit per milliliter of inhibition enhancement control, combine 25 microliters of the one endotoxin ... Journal / Bioengineering / Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays… ...
Mean endotoxin levels varied significantly from room to room. Cross-sectionally, endotoxin was moderately correlated between ... Endotoxin ranged from 2 to 1,945 units per milligram of dust. Levels were highest during summer and lowest in the winter. ... Endotoxin exposure has been proposed as an environmental determinant of allergen responses in children. To better understand ... We analyzed 1,287 dust samples from the kitchen, family room, and babys bedroom for endotoxin. We fit a mixed-effects model to ...
Recombinant human superoxide dismutase, Acute respiratory distress syndrome, Endotoxin, Intratracheal injection, Piglets, Blood ... 10 min before induction of acute lung injury with intratracheal endotoxin (20 mg/kg). The PaO2 values of the SOD-treated group ... was assessed in an animal model of acute lung injury induced by intratracheal endotoxin in neonatal piglets. Twenty-one ... effective for alleviating acute lung injury caused by endotoxins. ... Injury Induced by the Intratracheal Instillation of Endotoxin ...
BackgroundLong-term occupational exposure to cotton dust that contains endotoxin is associated with chronic respiratory ... Past endotoxin exposure was defined as cumulative exposure to endotoxin (EU/m3-years) prior to start of the survey interval but ... Past endotoxin exposure was defined as cumulative exposure to endotoxin (EU/m3-years) before the start of the survey interval ... Past endotoxin exposure was defined as cumulative exposure to endotoxin (EU/m3-years) before the start of the survey interval ...
  • Materials used in cell manufacturing may interfere with the test and therefore validation of bacterial endotoxin testing (BET) is mandated for each cell product. (brighttalk.com)
  • 1.1 This practice covers quantitative methods for the sampling and determination of bacterial endotoxin concentrations in water miscible metalworking fluids (MWF). (astm.org)
  • However, endotoxemia in liver transplant recipients has been associated with graft failure and a high mortality rate ( 4 , 5 ), and in gram-negative bacterial infections, the physiologic effects of endotoxin may persist after adequate antimicrobial drug treatment. (cdc.gov)
  • This new general chapter describes a bacterial endotoxins test (BET) that can be used as an alternative to the classic limulus amoebocyte lysate (LAL)-based methods for the quantification of endotoxins from gram-negative bacteria. (edqm.eu)
  • Both texts have been revised to allow the use of recombinant factor C (rFC) to test for bacterial endotoxins, as described in general chapter 2.6.32 . (edqm.eu)
  • For users, this proposed revision will mean that they can select the test described in 2.6.32 directly when testing pharmaceutical waters, i.e. without a side-by-side comparison against the tests described in general chapter 2.6.14 Bacterial endotoxins . (edqm.eu)
  • Absorption of bacterial endotoxin has been shown to occur after release of the occluded superior mesenteric artery in the rat. (bmj.com)
  • This document describes a protocol for a quantitative detection of Gram negative bacterial endotoxin in nanoparticle preparations using an end-point Limulus Amebocyte Lysate (LAL) assay. (duke.edu)
  • Gram negative bacterial endotoxin catalyzes the activation of proenzyme in the Limulus Amebocyte Lysate. (duke.edu)
  • Bacterial endotoxins and host response : proceedings of the 4th International Congress of Immunology Satellite Workshop held in Paris, France, on 26 July 1980 / M. K. Agarwal, editor. (who.int)
  • This information is important because endotoxin is released during multiplication or bacterial death, causing a series of biological effects that lead to an inflammatory reaction and resorption of mineralized tissues. (bvsalud.org)
  • Thus, the aim of this work is to carry out a review of the literature on the role of bacterial endotoxin in the etiology of periapical lesions, its mechanism of action, and to elucidate molecular mechanisms involved in endotoxin's recognition by the immune system and cell activation. (bvsalud.org)
  • The Bacterial Endotoxin (LPS) has been widely studied. (bvsalud.org)
  • Therefore, the objective of this study is to carry out a review of the literature on the role of bacterial endotoxin in the etiology of periapical lesions, as well as to elucidate molecular mechanisms involved in its recognition by the immune system and in cell activation. (bvsalud.org)
  • Although not all cell cultures will be impacted by the more standard endotoxin level, premium FBS can be a sensible choice for researchers concerned that higher endotoxin levels might cause issues for their specific cultures. (corning.com)
  • A highly purified material is used as a standard endotoxin (RSE/CSE), which has served historically to define endotoxin analytically. (europeanpharmaceuticalreview.com)
  • Control standard endotoxin (ACC cat. (moleculardevices.com)
  • A series of dilutions from the control standard endotoxin solution were prepared in LAL reagent water. (moleculardevices.com)
  • It includes a novel 96 well microplate (GOPLATE™) pre-loaded with the required Control Standard Endotoxin (CSE) concentrations for a standard curve, as well as Positive Product Controls (PPC). (integra-biosciences.com)
  • And 100 microliters of control standard endotoxin, to prepare as many intermediate dilutions as needed, to enable the preparation of a calibration standard with a concentration of one endotoxin unit per milliliter. (jove.com)
  • To prepare a 05 endotoxin unit per milliliter quality control, combines 50 microliter of the one endotoxin unit per milliliter of control standard endotoxin solution, with 950 microliters of LAL grade water. (jove.com)
  • Delta endotoxins (δ-endotoxins) are pore-forming toxins produced by Bacillus thuringiensis species of bacteria. (wikipedia.org)
  • Endotoxins are lipopolysaccharide molecules produced by gram-negative bacteria that can cause toxic reactions in patients and lead to serious complications. (brighttalk.com)
  • Endotoxins, part of the outer membrane of Gram negative bacteria, are a potent inducer of neutrophilic airway inflammation. (bmj.com)
  • Therefore, endotoxins are active for much longer than the lifetime of the bacteria themselves. (bmj.com)
  • Endotoxins are complex lipopolysaccharides that perform important structural and functional roles in the outer membrane of most gram-negative bacteria. (corning.com)
  • However, poorly maintained water purification systems, water storage containers, and associated tubing can harbor significant levels of endotoxin-producing bacteria and should always be tested if endotoxins are suspected or discovered in cell cultures. (corning.com)
  • Endotoxin, or lipopolysaccharide (LPS), is a constituent of the outer leaflet (OL) of the outer membrane (OM) of gram-negative bacteria. (europeanpharmaceuticalreview.com)
  • Found in the cell wall of gram negative bacteria, endotoxin has routinely been detected by the sensitive and specific Limulus Amebocyte Lysate (LAL) assay. (moleculardevices.com)
  • Clinical evaluation of culturable bacteria, endotoxins and lipoteichoic acid in teeth with vital normal pulp tissues. (bvsalud.org)
  • The objective of this study was to investigate the presence of culturable bacteria , endotoxins (LPS) and lipoteichoic acid (LTA) levels in teeth with normal vital pulp (NVP) with intact crowns (IC) and those with coronal restoration (CR) limited to the enamel level. (bvsalud.org)
  • Gram-negative bacteria not only have different factors of virulence and generate products and sub-products that are toxic to apical and periapical tissues, but also contain endotoxin in the outer membrane of their cell wall. (bvsalud.org)
  • In dentistry, many studies using different methodologies in vivo and in vitro have emphasized the importance of Gram-negative anaerobic bacteria and endotoxin in the etiology of chronic periapical lesions. (bvsalud.org)
  • We analyzed bulk samples of MWFs for bacteria, fungi, and endotoxin. (cdc.gov)
  • Bacteria and endotoxin levels in the bulk MWF samples were very low, and no fungi were detected in the samples. (cdc.gov)
  • Inhalation of gram-negative bacteria endotoxin. (cdc.gov)
  • The report concludes that the low-grade chronic, systemic, immune-mediated inflammatory response induced by the bacteria and their endotoxins and the proinflammatory mediators circulating through the blood contributes to various biological processes that are involved in neurological impairment and cerebral ischemia," said Leira, who is one of the report's authors. (medscape.com)
  • Full Title: Validation Of Endotoxin Testing For CAR T-cell Manufacturing Quality Control & Benefits of Cartridge Technology During manufacture of CAR T-cells there is a risk of contamination of the final product and/or materials with endotoxins. (brighttalk.com)
  • This article looks at best practices to reduce the risk of endotoxin contamination. (corning.com)
  • Although much remains unknown about the mechanisms through which endotoxins interact with in vitro cell cultures, it is clear that endotoxin contamination remains a major source of concern. (corning.com)
  • Residual endotoxin contamination in advanced biotherapy products is an expensive and often difficult contaminant to control. (lifescience.ca)
  • The final concentrations used to generate a standard and curve were 50, 5, 0.5, 0.05, and 0.005 EU/mL. 50 µL from each dilution series was transferred in triplicate to the 96-well Pyroplate ® microplate, which is certified free of interfering endotoxin and glucan contamination. (moleculardevices.com)
  • Here, we present a case study that describes the framework composed of three different LAL formats to estimate potential endotoxin contamination in nanoparticles. (jove.com)
  • EtEraser HP Endotoxin Removal Kit are designed to remove endotoxin contamination from aqueous solutions. (gaiascience.com.sg)
  • 5.1 The determination of endotoxin concentrations in MWF is a parameter that can be used in decision-making for prudent fluid management practices (fluid draining, cleaning, recharging or biocide dosages). (astm.org)
  • 9 Recent measurements on the endotoxin concentrations in house dust have been summarised by Michel. (bmj.com)
  • High concentrations of inhaled NO attenuated HPV in NOS2-deficient mice challenged with endotoxin. (nih.gov)
  • 2. The present study examines the effect of feeding with fat diets rich (corn oil) and poor (coconut oil) in linoleate at high and low concentrations on responses to endotoxin. (portlandpress.com)
  • The concentrations of airborne dust and endotoxin determined on the examined herb farms were large. (aaem.pl)
  • The concentrations of airborne endotoxin determined during peppermint and chamomile processing were within a wide range 1.53-208.33 µg/m 3 and 0.005-2604.19 µg/m 3 respectively (medians 57.3 µg/m3 and 0.96 µg/m 3 ). (aaem.pl)
  • In conclusion, farmers cultivating peppermint are exposed during processing of this herb to large concentrations of airborne microorganisms, dust and endotoxin posing a risk of work-related respiratory disease. (aaem.pl)
  • Endotoxin concentrations were 329 EU/m or 1122 pmol/m and 13.5 EU/m or 110 pmol/m, respectively, for dairy and control workers. (cdc.gov)
  • Commercial infant cereals contain high concentrations of endotoxins and viable Bacillus spp. (lu.se)
  • Endotoxins can be detected reliably by the limulus amoebocyte lysate (LAL) test. (brighttalk.com)
  • 14 The kinetic limulus amoebocyte lysate (LAL) method, an in vitro biological method, has been widely used for endotoxin measurements since the 1980s. (bmj.com)
  • Differential responses of the endothelial and epithelial barriers of the lung in sheep to Escherichia coli endotoxin. (jci.org)
  • Although intravenous Escherichia coli endotoxin has been used extensively in experimental studies to increase lung endothelial permeability, the effect of E. coli endotoxin on lung epithelial permeability has not been well studied. (jci.org)
  • However, prior challenge with Escherichia coli endotoxin markedly impaired the ability of LMBO to reduce QLPA/QPA in wild-type, but not in NOS2-deficient, mice. (nih.gov)
  • Escherichia coli endotoxin is a potent stimulator of interleukin 1 production from macrophages. (portlandpress.com)
  • Endotoxins (also known as lipopolysaccharides or LPS) are often co-purified with plasmid DNA and significantly reduce transfection efficiencies in endotoxin-sensitive cell lines. (sigmaaldrich.com)
  • Each cartridge is supplied with a predetermined spike recovery with two sample and two spiked channels enabling quick and easy endotoxin detection. (brighttalk.com)
  • In this webinar, you will learn from our experts: Introduction to cartridge technology and its benefits How the Endosafe nexgen-PTS provides a rapid quantitative method for Endotoxin detection in CAR T-cell products. (brighttalk.com)
  • PyroSmart NextGen™ is the result of years of research and development by leading endotoxin detection specialists, Associates of Cape Cod Inc. It follows the same enzymatic cascade pathway as naturally-sourced reagents and can be used as a direct, synthetic replacement. (rssl.com)
  • Endotoxin detection test is one of the most critical quality control tests required by the FDA for all drugs in their final formulation. (genscript.com)
  • ToxinSensor Endotoxin Detection System uses FDA approved LAL (Limulus Amebocyte Lysate) testing methods to achieve a fast and highly sensitive endotoxin assay. (genscript.com)
  • Our unique combination of Endosafe® endotoxin testing, Celsis® rapid microbial detection, and Accugenix® microbial identification and strain typing keeps your manufacturing operations running efficiently and smoothly, lowers your cost to manufacture, and protects your reputation. (rxinsider.com)
  • Detection of endotoxins in engineered nanomaterials represents one of the grand challenges in the field of nanomedicine. (jove.com)
  • Endotoxins are usually measured in samples of airborne or settled dust. (bmj.com)
  • A study of the delta-endotoxin of Bacillus thuringiensis var. (who.int)
  • Endotoxinas producidas por BACILLUS THURINGIENSIS utilizadas en plantas transgénicas e insecticidas. (bvsalud.org)
  • Endotoxins produced by BACILLUS THURINGIENSIS used in transgenic plants and insecticides. (bvsalud.org)
  • In a centrifuge, the membrane pores dilate and the eluate, free of endotoxin, passes into the collection tube. (lifescience.ca)
  • The timing of exposure is not the only potential influence on the long-term effects of endotoxin on changes in lung function. (nih.gov)
  • 1.5 This practice seeks to minimize inter-laboratory variation of endotoxin data but does not ensure uniformity of results. (astm.org)
  • We fit a mixed-effects model to estimate mean levels and the variation of endotoxin between homes, between rooms, and between sampling times. (harvard.edu)
  • Endosafe nexgen-PTS, (Charles River) is a portable system designed to read cartridges loaded with LAL reagents and endotoxin control. (brighttalk.com)
  • For many cultures, this level is suitably low to avoid adverse effects on in vitro cell growth, yet it is important to be aware that any reagents added to media after it has been filtered can also harbor endotoxins. (corning.com)
  • It comes in response to growing industry demand for a reliable and effective alternative to the longstanding practice of using LAL reagents derived from horseshoe crab blood for endotoxin testing. (rssl.com)
  • The object of this study is to find out if an inhalation of endotoxin (LPS) induces a local and systemic inflammation and if yes - how to prove this inflammation. (uni-frankfurt.de)
  • Inhalation of endotoxin is followed by clinical and laboratory signs of systemic infammation, whereas no significant increase of bronchial eNO (exhaled NO) was observed as an indicator of airway infammation. (uni-frankfurt.de)
  • Endotoxin induces nitric oxide (NO) production by NO synthase 2 (NOS2). (nih.gov)
  • Endotoxin induces the expansion of IL-1β-producing uterine DCs and, in response, more uterine ILC2s produce IL-4, IL-5 and IL-13. (elifesciences.org)
  • The Chromogenic LAL Endotoxin Assay kit can quantitatively detect endotoxin in a broad range (0.01-1 EU/ml). (genscript.com)
  • The Gel Clot Endotoxin Assay kit is a fast qualitative test showing a positive or negative result. (genscript.com)
  • Our Low endotoxin, azide-free formats have low endotoxin level (≤ 1 EU/ml, determined by the LAL assay) and are free from azide, to achieve consistent experimental results in functional assays. (abcam.com)
  • Low Endotoxin/Azide Free Anti-Mouse LPAM-1 antibody for use in flow cytometry, immunohistochemistry, immunoprecipitation, and blocking assays. (southernbiotech.com)
  • Low Endotoxin/Azide Free Anti-Human IL-13 antibody for use in flow cytometry, immunohistochemistry / immunocytochemistry, ELISA, ELISpot, and neutralization assays. (southernbiotech.com)
  • B. thuringiensis encodes many proteins of the delta endotoxin family (InterPro: IPR038979), with some strains encoding multiple types simultaneously. (wikipedia.org)
  • Some insects populations have started to develop resistance towards delta endotoxin, with five resistant species found as of 2013. (wikipedia.org)
  • Therefore, it is essential to remove endotoxin from human and animal parenteral drugs, biological products, and medical devices. (genscript.com)
  • These kits can be used to remove endotoxin from proteins,peptides,antibodies,or even DNA samples. (genscript.com)
  • In contrast, the risk of non-atopic asthma, characterised by neutrophilic response, is enhanced in subjects with higher endotoxin exposure. (bmj.com)
  • ABSTRACT Few data are available from Eastern Mediterranean countries about levels of domestic allergens and endotoxins. (who.int)
  • After endotoxin challenge and LMBO, systemic oxygenation was impaired to a greater extent in wild-type than in NOS2-deficient mice. (nih.gov)
  • Indeed, maternal ILC2s promote fetal growth and protect against fetal mortality upon systemic endotoxin challenge. (elifesciences.org)
  • Our observations suggest that biologically relevant levels of antigens, including endotoxin, may have been transferred to the recipient. (cdc.gov)
  • Dust samples were collected from mattresses and floors of 457 homes in the Syrian city of Aleppo and analysed for antigens and endotoxins. (who.int)
  • A large number of studies in occupational epidemiology has shown that exposure to endotoxins increases the likelihood of organic dust toxic syndrome, chronic bronchitis, and asthma-like syndrome. (bmj.com)
  • In contrast, it has been shown that exposure to endotoxins in the occupational and environmental setting protects from respiratory allergies and sensitisation to allergens. (bmj.com)
  • While some studies indicated an increased risk of asthma after endotoxin exposure, others have shown that endotoxin exposure protects from asthma. (bmj.com)
  • At the workplace, measures should therefore be taken in order to reduce endotoxin exposure. (bmj.com)
  • In occupational settings, endotoxins mainly occur in environments with high exposure to organic dusts. (bmj.com)
  • Exposure from, for example, intensive animal production facilities increases the background exposure to endotoxins in rural areas 11 compared to urban settings. (bmj.com)
  • Endotoxin exposure has been proposed as an environmental determinant of allergen responses in children. (harvard.edu)
  • To better understand the implications of using a single measurement of house dust endotoxin to characterize exposure in the first year of life, we evaluated room-specific within-home and between-home variability in dust endotoxin obtained from 470 households in Boston, Massachusetts. (harvard.edu)
  • Long-term occupational exposure to cotton dust that contains endotoxin is associated with chronic respiratory symptoms and excessive decline in forced expiratory volume in 1 sec (FEV 1 ), but the mechanisms of endotoxin-related chronic airflow obstruction remain unclear. (nih.gov)
  • In the current study, we examined temporal aspects of the exposure-response relationship between airborne endotoxin exposure, longitudinal change in FEV 1 , and respiratory symptoms in a cohort of Chinese cotton textile workers. (nih.gov)
  • We used a generalized estimating equations approach to model FEV 1 level and respiratory symptoms as a function of past exposure (cumulative exposure up to the start of the most recent 5-year survey interval) and cumulative exposure (within the most recent interval) to endotoxins, after adjusting for other covariates. (nih.gov)
  • Past exposure to endotoxin was associated with reduced FEV 1 level among retired cotton workers. (nih.gov)
  • Recent endotoxin exposure was significantly associated with byssinosis, chronic bronchitis, and chronic cough. (nih.gov)
  • However, the long-term exposure-response relationship between endotoxin and change in lung function and respiratory symptoms is not well understood. (nih.gov)
  • A 3-year longitudinal study of pig farmers observed a significant linear association between endotoxin exposure and annual decline in forced expiratory volume in 1 sec (FEV 1 ). (nih.gov)
  • Previous analyses of the present study population, a cohort of Chinese cotton textile workers, evaluated longitudinal change in FEV 1 and the occurrence of chronic respiratory symptoms in relation to cumulative endotoxin exposure. (nih.gov)
  • Whether the excessive decline in lung function and the occurrence of respiratory symptoms are influenced differently by more recent or more remote exposure to endotoxin is unknown. (nih.gov)
  • In the present study, we evaluated the exposure-response relationship between cumulative endotoxin exposure and longitudinal change in FEV 1 and the occurrence of respiratory symptoms in an updated follow-up of a 25-year prospective cohort study of Chinese cotton textile workers. (nih.gov)
  • Relation between house-dust endotoxin exposure, type 1 T-cell development, and allergen sensitisation in infants at high risk of asthma. (southernbiotech.com)
  • METHODS: Exposure of 205 dairy and 45 control (vegetable processing) workers to particulate matter and endotoxin was monitored. (cdc.gov)
  • 1.3 This practice gives an estimate of the endotoxin concentration in the sampled MWF. (astm.org)
  • The absorbance (A405) can be measured by the plate reader and is proportional to the endotoxin concentration in the sample. (moleculardevices.com)
  • Then using 900 microliters of LAL grade water, and 100 microliters of the one endotoxin unit per milliliter calibration standard, prepare a second calibration standard, at a concentration of 0.1 endotoxin unit per milliliter. (jove.com)
  • Concentration of endotoxin in a sample is in direct proportion with absorbance and is calculated from a standard curve. (duke.edu)
  • ToxinSensor Endotoxin Assay Kits can be widely used in in vitro end-product endotoxin tests, including those for human and animal parenteral drugs, biological products, and medical devices. (genscript.com)
  • On behalf of the Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM), the NTP Interagency Center for the Evaluation of Alternative Toxicological Methods (NICEATM) requests public comments on nominations received for the three in vitro test methods proposed for detecting and quantifying botulinum neurotoxin (BoNT), and at second for an in vitro test method proposed for detecting non-endotoxin pyrogens. (gmp-compliance.org)
  • CONCLUSIONS: Modern California dairy endotoxin exposures and shift length were associated with a mild acute decrease in forced vital capacity. (cdc.gov)
  • The aim of this study was to determine the levels of microorganisms, dust and endotoxin in the air during processing of peppermint ( Mentha piperita ) and chamomile ( Matricaria recutita ) by herb farmers, and to examine the species composition of airborne microflora. (aaem.pl)
  • Next generation Proteus kits combine the quality separation you expect from gravity flow columns with the speed and ease-of-use of spin columns to give you 4-log reductions of endotoxin without compromising protein or antibody yields. (lifescience.ca)
  • The contact time is maximized to ensure maximum endotoxin depletion without losses of the target protein, antibody or domain antibody. (lifescience.ca)
  • 1 Endotoxins are parts of the outer membrane. (bmj.com)
  • Endotoxin is a major contaminant found in biologically active substances. (genscript.com)
  • This kit utilizes chromogenic LAL assay to quantitatively detect endotoxin in a broad range. (genscript.com)
  • In addition, the department is looking for data generated through alternative test methods for identifying non-endotoxin pyrogens, including but not limited to the monocyte activation test (MAT), which was nominated by Biotest AG. (gmp-compliance.org)
  • Data on non-endotoxin pyrogens tested in the rabbit pyrogen test (RPT) are requested for comparison. (gmp-compliance.org)
  • Thus, the alveolar epithelium in sheep is significantly more resistant than the lung endothelium to the injurious effects of E. coli endotoxin. (jci.org)
  • Mean endotoxin levels varied significantly from room to room. (harvard.edu)
  • Endotoxin levels were significantly higher in wool/cotton mattresses and older houses. (who.int)
  • Endotoxin levels were significantly higher in the evisceration area than the dark meat area, although they were not significantly related to reported employee symptoms. (cdc.gov)
  • 5.2 This standard provides a practice for analysts who perform quantitative endotoxin analyses of water-miscible MWF. (astm.org)
  • For efficient removal of endotoxin from samples! (genscript.com)
  • With repeat use of ToxinEraser endotoxin removal resin. (genscript.com)
  • GenScript ToxinSensor is an efficient endotoxin removal tool. (genscript.com)
  • The final endotoxin level can be reduced below 1 EU/mg with repeated use of ToxinSensor Advanced Endotoxin Removal resin. (genscript.com)
  • The proprietary FlowGo technology regulates sample movement through the high-quality affinity resin matrix, increasing both endotoxin removal and protein recovery. (lifescience.ca)
  • Uniquely, we offer flow rate control for endotoxin removal in a centrifuge. (lifescience.ca)
  • EtEraser™ SE Endotoxin Removal Kit utilizes food-grade modified E-poly-L-lysine as a high-affinity ligand for endotoxins. (gaiascience.com.sg)
  • Particulate matter, endotoxin, and worker respiratory health on large Californian dairies. (cdc.gov)
  • Indeed, the previously referenced study showed some 1M amino acid solutions to have endotoxin levels as high as 50ng/mL. (corning.com)
  • Where possible, researchers should ask manufacturers to confirm the endotoxin levels of their products. (corning.com)
  • When in doubt, the media endotoxin levels should be tested by LAL assay both before and after adding any new components. (corning.com)
  • The purpose of this study was to evaluate the usefulness of a newly developed method (Endotoxin Activity Assay (EAA)) to measure the ET activity (EA) in patients under sepsis compared with the prior method of the limulus amebocyte lysate (LAL) assay and explore the association between EA levels and patients' severity. (scirp.org)
  • L. C. Casey, R. A. Balk and R. C. Bone, "Plasma Cytokine and Endotoxin Levels Correlate with Survival in Patients with the Sepsis Syndrome," Annals Internal Medicine, Vol. 119, No. 8, 1993, pp. 771-778. (scirp.org)
  • Adjusting for season, the correlation of endotoxin levels within homes over time was 0.65 for both the bedroom and kitchen and 0.54 for the family room. (harvard.edu)
  • These results suggest that room-to-room and home-to-home differences in endotoxin influence the total variability more than factors affecting endotoxin levels within a room over time. (harvard.edu)
  • The levels of endotoxin in the pinning room were found to be much higher than in any other area of the evisceration or dark meat areas. (cdc.gov)
  • Endotoxin (ET) is a structural molecule of the Gram-negative bacilli extracellular membrance, which activates targeted cells including macrophages and neutrophils, and causes septic shock. (scirp.org)
  • Once activated, the endotoxin binds to the gut epithelium and causes cell lysis by the formation of cation-selective channels, which leads to death. (wikipedia.org)
  • In addition, other sections of this guidance document identify the risk to health and describe measures that, if followed by manufacturers and combined with the general controls, will generally address the risk associated with these endotoxin assays and lead to a timely premarket notification [510(k)] review and clearance. (fda.gov)
  • The efficacy of prophylactic endotracheal administration of superoxide dismutase (SOD) was assessed in an animal model of acute lung injury induced by intratracheal endotoxin in neonatal piglets. (karger.com)
  • We'll present the validation approach for endotoxin testing using Endosafe nexgen-PTS designed to meet Australian regulatory requirements. (brighttalk.com)
  • This endotoxin tolerance (ET) is mediated via epigenetic mechanisms. (uni-muenchen.de)
  • E. coli endotoxin was administered according to one of three protocols: intravenous alone (5-500 micrograms/kg), intravenous (5 micrograms/kg) plus low-dose alveolar endotoxin (10 micrograms/kg), and high-dose alveolar endotoxin alone (50-100 micrograms/kg). (jci.org)
  • Although intravenous E. coli endotoxin produced a marked increase in transvascular protein flux and interstitial pulmonary edema, there was no effect on the clearance of either the vascular (131I-albumin) or the alveolar (125I-albumin) protein tracer across the epithelial barrier. (jci.org)
  • Morphologic studies confirmed that the alveolar epithelial barrier was not injured by either intravenous or alveolar E. coli endotoxin. (jci.org)
  • DIC was induced by intravenous administration of endotoxin, 20 micrograms/kg/hr during 6 hr. (cun.es)
  • Many commercially available protocols are unable to remove endotoxins effectively and are based on non-affinity chromatography methods e.g. (lifescience.ca)
  • The animals received recombinant human SOD (5 or 20 mg/kg intratracheally) 10 min before induction of acute lung injury with intratracheal endotoxin (20 mg/kg). (karger.com)
  • Thus, the present findings suggest that prophylactic treatment with SOD may be, at least in part, effective for alleviating acute lung injury caused by endotoxins. (karger.com)
  • The protocol is based on QCL-1000 kit insert manufactured by BioWhittaker/Cambrex Corporation (10.1) and the US FDA Guideline "Validation of the LAL test as an end-product endotoxin test for human and animal parenteral drugs, biological products, and medical devices" (10.2). (duke.edu)
  • 4 The immune stimulatory capacity of endotoxins can only be inactivated at high temperatures (for example, 160°C for 4 hours). (bmj.com)
  • The presence of endotoxin can cause pyrogenic reactions in host organisms such as endotoxin shock, tissue injury, and even death. (genscript.com)
  • To assess the therapeutic efficacy of agents capable of stimulating the fibrinolytic system, such as tissue plasminogen activator (t-PA) and urokinase (UK) on endotoxin-induced disseminated intravascular coagulation (DIC) in the rabbit. (cun.es)
  • In spite of the marked chemotactic effect of alveolar endotoxin, there was no change in the permeability of the epithelial barrier to the vascular or alveolar protein tracers. (jci.org)
  • This kit is a convenient endotoxin qualitative test based on gelation principle. (genscript.com)
  • Or what does this mean in terms of adherence to endotoxin testing requirements, or why do I even need to test for endotoxins. (rxinsider.com)
  • The ASSIST PLUS is used to perform an ENDOZYME II GO endotoxin test from bioMérieux, using a pipetting program generated by the VIALAB software. (integra-biosciences.com)