coagulase


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Related to coagulase: staphylokinase, Leukocidins

coagulase

 [ko-ag´u-lās]
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.

coagulase

/co·ag·u·lase/ (-lās) an antigenic substance of bacterial origin, produced by staphylococci, which may be causally related to thrombus formation.

coagulase

(kō-ăg′yə-lās′, -lāz′)
n.
Any of various enzymes, such as rennin or thrombin, that induce coagulation.

coagulase

[kō·ag′yəlās]
Etymology: L, coagulare, to curdle
an enzyme produced by bacteria, particularly Staphylococcus aureus, that promotes the formation of fibrin from fibrinogen to form thrombi.

coagulase

An enzyme secreted by the micro-organism Staphylococcus aureus that causes clotting in blood plasma by converting prothrombin to thrombin. This ability probably contributes to the tendency of the organism to form abscesses.

coagulase

an antigenic substance of bacterial origin, produced chiefly by staphylococci, which may be causally related to thrombus formation.

coagulase test
enzymatic conversion of fibrinogen in rabbit plasma to fibrin is used as a means of identifying pathogenic species of staphylococci. The test may be carried out rapidly on a slide or in several hours or overnight in a tube. Most coagulase-positive staphyloccoci are pathogenic; coagulase-negative ones commonly are not.
References in periodicals archive ?
Cultural examination confirmed that cocci observed on smear examination were mannitol fermenting, coagulase positive, methicilin sensitive and Vancomycin sensitive Staphylococuus aureus.
Significant difference as calculated through Chi-square 2 x 2 contingency table was seen for plasma coagulase production.
Materials and Methods: In this study 241 coagulase negative staphylococci clinical isolates from Maternity and Children hospital Makkah were included.
The percentage of coagulase positive results from each plate was determined and multiplied by the concentration of yellow halo-forming colonies for each sample to give the S.
aureus produces coagulase and spa proteins which are virulence factors and induce mastitis (Karahan et al.
Coagulase negative staphylococci (CoNS) were considered as contaminant organisms in the past but now it is realized in various parts of the world and has become an established fact that it causes infections.
Resultados e discussao: Das amostras avaliadas, 90 foram identificadas como Staphylococcus coagulase negativa (SCN) e 21 como Staphylococcus coagulase positiva (SCP), confirmando uma maior ocorrencia dos SCN nos casos de mastite subclinica de caprinos.
Figure 1 presents the results on the microbiological quality of milk based sweet products in terms of counts of Staphylococci (both coagulase -ve and +ve) in them.
In next couple of decades coagulase negative Staphylococci emerged as the commonest pathogen.
Trata-se de um estudo quali-quatitativo de resultados analiticos, realizado no periodo de 2007-2008 atravEs de analises de coliformes ambientais (35[degrees]C), coliformes termotolerantes (45[degrees]C) em agua filtrada e fervida, dietas enterais e alimentos infantis; estafilococos coagulase positiva, Bacillus cereus, Clostridios sulfitorredutore e Salmonella sp em dietas enterais e alimentos infantis; contagem global de bactErias mesofilos heterotroficas e Listeria monocytogenes em dietas enterais.