coagulases microbiology definition
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Coagulase Coagulase is a protein enzyme produced by several microorganisms that enables the conversion of fibrinogen to fibrin. In the laboratory, it is used to distinguish between different types of Staphylococcus isolates. Importantly, S. aureus is generally coagulase-positive, meaning that coagulase negativity usually excludes S. aureus. However it is now known that not all S. aureus are coagulase-positive.
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Materials Required: Applications: 1  The coagulase test is used to distinguish between pathogenic and nonpathogenic members of the genus Staphylococcus. 2  All pathogenic strains of S. aureus are coagulase positive whereas the nonpathogenic species(S. epidermidis) are coagulase negative.+) --- Delayed reaction d --- 11- 89% of strains are positive. 1  The coagulase test is used to distinguish between pathogenic and nonpathogenic members of the genus Staphylococcus. 2  All pathogenic strains of S. aureus are coagulase positive whereas the nonpathogenic species(S. epidermidis) are coagulase negative.
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Definitions &Translations Microbiology. Microbiology is the study of microscopic organisms, either unicellular, multicellular, or acellular. Microbiology includes the disciplines virology, mycology, parasitology, bacteriology, and so on.
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Innate immune system In addition, some of the products of the coagulation system are directly antimicrobial. For example, beta-lysine, an amino acid produced by platelets during coagulation, can cause lysis of many Gram-positive bacteria by acting as a cationic detergent.
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Staphylococcus epidermidis and other Coagulase-Negative Staphylococci Most of the coagulase-negative staphylococci associated with clinical disease are common inhabitants of the skin and mucous membranes. S. epidermidis is the most prevalent species, accounting for approximately 60-70% of all coagulase-negative Staphylococci on the skin.aboratory tests for coagulase negative staphylococci usually do not support a diagnosis of an infectious process or help resolve whether an isolate is a pathogen or contaminant A single isolate from a blood culture is usually considered of indeterminate significance or to represent contamination.
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microbiology bacteria, bacterium - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants.icrobiology. the branch of biology that studies microorganisms, including bacteria, viruses, fungi, and pathogenic protozoa. — microbiologist, n.
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coagulate The definition of coagulate means for a liquid to become a soft mass or a clot. An example of coagulate is for blood to clot and congeal into a mass on the edge of a cut in the skin. -·lat·ed, -·lat·ing. to cause (a liquid) to become a soft, semisolid mass; curdle; clot. Origin of coagulate.
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coagulase coagulase. a bacterial enzyme that reacts with a cofactor found in blood plasma to catalyze the formation of fibrin from fibrinogen. It is produced by most of the virulent strains of staphylococci, and by Yersinia pestis.
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- Elinor L Baron, MD, DTMH. Coagulase-negative staphylococci (CoNS) are part of the normal flora of human skin [1]. These organisms have relatively low virulence but are increasingly recognized as agents of clinically significant infection of the bloodstream and other sites.
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Bacterial Genetics Bacterial conjugation refers to the transfer of DNA between bacterial cells that requires cell-to-cell contact. Joshua Lederberg and Edward Tatum first. described conjugation in 1946 when they discovered the F factor (an episome) that can move between Escherichia coli cells.
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Lancefield grouping Lancefield grouping is grouping catalase-negative, coagulase-negative bacteria based on the carbohydrate composition of bacterial antigens found on their cell walls.
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- Coagulation: In medicine, the clotting of blood. The process by which the blood clots to form solid masses, or clots. More than 30 types of cells and substances in blood affect clotting.The process is initiated by blood platelets. Platelets produce a substance that combines with calcium ions in the blood to form thromboplastin, which in turn converts the protein prothrombin into thrombin in a complex series of reactions.he blood cells and plasma are enmeshed in the network of fibrils to form the clot. Tissue can also be subjected to coagulation by various means, as by electrocoagulation, laser coagulation, or photocoagulation.
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- A blood clot or thrombus is consists of blood cells occluded in a matrix of the protein fibrin. Thrombolysis or fibrinolysis is enzyme regulated process for dissolution of clot. In mammalian circulation, the enzyme responsible for the fibrinolysis is plasmin which is a trypsin-like serine protease [7].he biochemical conversion of the inactive plasminogen to fibrinolytic plasmin involves a limited proteolytic cleavage which is mediated by the various plasminogen activators [8]. Generally two plasminogen activators that occur naturally in blood are the tissue type (t-PA) and the urokinase type (u-PA).
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- Save. Coagulase-negative staphylococcus covers a family of staphylococcus bacteria responsible for several types of infections. Most staphylococcus infections are a result of weakened immune system or caught in the hospital; however, staphylococcus is found in various forms.. epidermidis (a coagulase-negative staphylococcus strain) attacks the skin and can cause serious infection. Unclean plastic utensils placed in the body cause bacterial infection. S. epidermidis is resistant to antibiotics; there is no treatment. If infection is suspected, the utensil is removed and replaced.
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- From the NMC Newsletter Udder Topics, August, 2000. Coagulase-negative staphylococcus (CNS) species are the organisms most frequently isolated from bovine milk samples. Mastitis researchers do not classify CNS as contagious or environmental pathogens.They designate them as skin flora opportunists since CNS are a part of the normal teat skin flora.oagulase-negative staphylococcus (CNS) species are the organisms most frequently isolated from bovine milk samples. Mastitis researchers do not classify CNS as contagious or environmental pathogens.
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- Microbiology is the study of microbes-microscopic living organisms. This group includes bacteria, fungi, and protozoa. This page looks at microbiology in the context of the rumen-part of the digestive system of cows and other ruminants.acteria are the most important microbes involved in ruminant digestion, and there are many different types in the rumen (Prescott, Harley & Klein, 2005). Almost all of the rumen bacteria will die if they are exposed to oxygen-they are obligately anaerobic (Hungate, 1975).
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Thrombolysis Thrombolysis is the breakdown (lysis) of blood clots by pharmacological means, and commonly called clot busting. It works by stimulating secondary fibrinolysis by plasmin through infusion of analogs of tissue plasminogen activator (tPA), the protein that normally activates plasmin.hrombolysis mainly involves the use of thrombolytic drugs, which dissolve blood clots. These drugs are either derived from Streptococcus species, or, more recently, using recombinant biotechnology whereby tPA is manufactured by bacteria, resulting in a recombinant tissue plasminogen activator or rtPA.
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Microbiological culture Microbiological culture. A microbiological culture, or microbial culture, is a method of multiplying microbial organisms by letting them reproduce in predetermined culture media under controlled laboratory conditions. Microbial cultures are foundational and basic diagnostic methods used extensively as a research tool in molecular biology. Microbial cultures are used to determine the type of organism, its abundance in the sample being tested, or both. It is one of the primary diagnostic methods of microbiology and used a
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Materials Required: Applications: 1  The coagulase test is used to distinguish between pathogenic and nonpathogenic members of the genus Staphylococcus. 2  All pathogenic strains of S. aureus are coagulase positive whereas the nonpathogenic species(S. epidermidis) are coagulase negative.pplications: 1  The coagulase test is used to distinguish between pathogenic and nonpathogenic members of the genus Staphylococcus. 2  All pathogenic strains of S. aureus are coagulase positive whereas the nonpathogenic species(S. epidermidis) are coagulase negative.
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- Microbiology is the study of microbes-microscopic living organisms. This group includes bacteria, fungi, and protozoa. This page looks at microbiology in the context of the rumen-part of the digestive system of cows and other ruminants.here are all sorts of different types of microbes in the rumen, such as fungi, bacteria and single-celled eukaryotic organisms called protozoans. There are also some archaea, which are ancient microorgansisms that produce methane.
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coagulate verb (used with or without object), coagulated, coagulating. 1. to change from a fluid into a thickened mass; curdle; congeal: Let the pudding stand two hours until it coagulates. 2. Biology. (of blood) to form a clot.
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Blood Cultures Positive for Coagulase-Negative Staphylococci: Antisepsis, Pseudobacteremia, and Therapy of Patients A blood culture cohort study investigating issues related to isolation of coagulase-negative staphylococci (CoNS) and other skin microflora is reported.easures to limit the unnecessary use of vancomycin (and other agents) are important. Coagulase-negative staphylococci (CoNS), the most frequent blood culture isolates, are predominantly blood culture contaminants, but they are also a significant cause of bacteremia (2-5, 7, 9, 13).
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- Micrococcus luteus is a Gram-positive, to Gram-variable, nonmotile,  spherical, saprotrophic bacterium that belongs to the family  Micrococcaceae. It produces coagulase whic … h is a protein enzyme  that enables the conversion of fibrinogen to fibrin.
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- Clinics or health care professionals providing care to the medically indigent may enter into an. agreement with KDHE in order to be deemed a Point of Entry or Charitable Health Care. Provider and be indemnified for liability purposes under the Kansas Tort Claims Act.
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blood coagulation Noun. 1. coagulation-the process of forming semisolid lumps in a liquid. clotting, curdling. blood clotting, blood coagulation-a process in which liquid blood is changed into a semisolid mass (a blood clot).oun. 1. coagulation-the process of forming semisolid lumps in a liquid. clotting, curdling. blood clotting, blood coagulation-a process in which liquid blood is changed into a semisolid mass (a blood clot).
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bacteria (bækˈtɪərɪə) pl n, sing -rium (-rɪəm) (Microbiology) a very large group of microorganisms comprising one of the three domains of living organisms. They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animals.