Genetic Diversity and Exotoxin A Production of Group A Streptococci Causing Sepsis
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منابع مشابه
Genetic Diversity and Exotoxin A Production of Group A Streptococci Causing Sepsis
The M protein and streptococcus pyrogenic exotoxin (SPE A) are important virulence factors in group A streptococci (GAS) infections. The emm types of GAS strains isolated from patients with sepsis were determined by sequencing the 5' N-terminus of the emm gene, encoding the M protein, and clonality analysis using pulsed-field gel electrophoresis. The presence of speA and production of SPE A wer...
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In group A streptococci, genetic markers for principal tissue reservoir are located within emm genes, which encode surface proteins that have a role in virulence. A worldwide collection of 160 isolates was evaluated for two traits: chromosomal emm gene markers for tissue tropism (designated patterns A-E), and bacteriophage-associated genes (speA and speC) encoding pyrogenic exotoxins. The speA ...
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15 صفحه اولBacteriocine 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...
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ژورنال
عنوان ژورنال: Journal of Korean Medical Science
سال: 2006
ISSN: 1011-8934
DOI: 10.3346/jkms.2006.21.2.193