Detection of tet(M), tet(O) and tet(S) in tetracycline/minocycline-resistant Streptococcus pyogenes bacteraemia isolates
نویسندگان
چکیده
منابع مشابه
detection of mutation in 23s rrna in isolates of streptococcus pyogenes resistant to erythromycin
background: in this study, erythromycin resistance isolates from the students with aged 12-15 yr old were studied and the mutations in the 23s rrna were identified by sequencing. methods: throat samples of 327 students with 12-15 years old from 3 schools of tehran were cultured on the selective streptococcus pyogenes medium and 23 strains were primarily selected as s. pyogenes . results: all ...
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In a nationwide study in Germany, a total of 381 Streptococcus pyogenes were collected. Erythromycin A-resistant strains were characterized for the underlying resistance genotype, showing 55.6% had the efflux type mef(A), 31.5% had erm(A), and 13.0% had erm(B). A total of 23 different multilocus sequence types were observed.
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Minimally subcultured clinical isolates of virulent nephritogenic and nonnephritogenic Streptococcus pyogenes of the same serotype showed major differences in lipoteichoic acid (LTA) production, secretion, and structure. These were related to changes in coccal adherence to and destruction of growing human skin cell monolayers in vitro. A possible relationship between cellular LTA content and gr...
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In Spain, the frequency of resistance of group A streptococci (GAS) to erythromycin was very low, increasing from 0 to 0.7% in 1989 and 1990 (1, 7) to approximately 3% in 1991 to 1994 (2). The purpose of the present study was to determine the susceptibilities of recent isolates of GAS to macrolides and, in the case of resistant isolates, to ascertain their patterns of erythromycin resistance. W...
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Group A Streptococcus associated diseases continue to be a major public health problem. Asymptomatic carriage of GAS is prevalent in school children. Penicillin remains the drug of choice for GAS infections; alternate therapies include macrolides and cephalosporins. Though resistance to penicillin has never been reported, resistance to macrolides and lincosamides is being increasingly reported ...
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ژورنال
عنوان ژورنال: Journal of Antimicrobial Chemotherapy
سال: 2003
ISSN: 1460-2091
DOI: 10.1093/jac/dkh043