منابع مشابه
Clot formation by group A streptococci.
Group A streptococci of several different M serotypes can cause human plasma to clot in nutrient-poor media. Addition of glucose to the medium prevents clot formation. Once formed, clots are stable for several days and can be lysed on addition of exogenous streptokinase or urokinase. Clot lysis can also be achieved by addition of glucose to a clot containing wild-type group A streptococci but n...
متن کاملBacteriocine Production by Group a Streptococci
I t has been known for many years t ha t some strains of Escherichia coli, Bacillus megaterium, and Group D streptococci secrete substances called colicines, or bacteriocines, which inhibi t the growth of o ther strains of closely related microorganisms (1-6). In 1949 Sherwood and his coworkers (7) reported observations on the inhibitory action of certain strains of be ta hemolyt ic streptococc...
متن کاملRAPID IDENTIFICATION OF GROUP A STREPTOCOCCI BY PYRROLIDONYL-β-APHTHYLAMIDE HYDROLYSIS
In a clinical trial a new pyrrolidonyl-β-naphthylamide (PYR) hydrolysis test was compared with the bacitracin disk susceptibility test for accuracy in the presumptive identification of group A streptococci (GAS). Among 128 isolates of beta-hemolytic streptococci 93 group A isolates were found. The sensitivity of the PYR and bacitracin tests were similar (98.9%), but the bacitracin test had ...
متن کاملBacteremia Caused by Group G Streptococci, Taiwan
A retrospective observational study in Taiwan, 1998-2004, identified 92 patients with group G streptococcal bacteremia; 86 had Streptococcus dysgalactiae subspecies equisimilis. The most common diagnosis was cellulitis (48 cases), followed by primary bacteremia (34 cases). Infection recurred in 9 patients. Mortality rate was low (3.3%); resistance to quinupristin-dalfopristin was high.
متن کاملSerious infection caused by group C streptococci.
Group C streptococci commonly cause infection in animals but only occasionally give rise to severe infection in man. We report here three cases of serious human infection due to this organism and discuss its pathogenicity in relation to the clinical manifestations of the disease.
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1998
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.66.5.2362-2364.1998