Viridans group streptococci: a reservoir of resistant bacteria in oral cavities
نویسندگان
چکیده
منابع مشابه
High prevalence of erythromycin-resistant and clindamycin-susceptible (M phenotype) viridans group streptococci from pharyngeal samples: a reservoir of mef genes in commensal bacteria.
Sir, An increase in the isolation of Streptococcus pyogenes resistant to macrolides, often mediated by the recently described M phenotype, has been reported in several countries. Strains of the M phenotype carry the mef(A) gene, which confers resistance to 14and 15-, but not 16-membered macrolides or clindamycin. Pneumococcal resistance to macrolides mediated by the mef(A) gene has also been de...
متن کاملH(2)O(2) produced by viridans group streptococci may contribute to inhibition of methicillin-resistant Staphylococcus aureus colonization of oral cavities in newborns.
In an accompanying report, we showed that viridans group streptococci may prevent methicillin-resistant Staphylococcus aureus (MRSA) colonization of the oral cavities of newborns. In the present study, we investigated the mechanism of prevention in vitro. Most viridans group streptococci had bacteriocin-like activity and killed MRSA, Burkholderia cepacia, Enterobacter aerogenes, and Pseudomonas...
متن کاملMannosidase production by viridans group streptococci.
The production of mannosidase activity by all currently recognized species of human viridans group streptococci was determined using an assay in which bacterial growth was dependent on the degradation of the high-mannose-type glycans of RNase B and subsequent utilization of released mannose. RNase B is an excellent substrate for the demonstration of mannosidase activity since it is a glycoprote...
متن کاملPrevalence rate and antibiotic susceptibility of oral viridans group streptococci (VGS) in healthy children population.
PURPOSE The aim of this study was to evaluated the prevalence rate of oral viridans group streptococci (VGS) and their susceptibilities to some antibiotics in healthy children. MATERIAL AND METHODS Samples of pharyngeal swabs and supragingival dental plaques for microbiological studies were collected from 206 healthy children, aged 4-18 years. Additionally, 75 samples of carious lesions from ...
متن کاملEffect of penicillin G every three weeks on oral microflora by penicillin resistant Viridans Streptococci.
BACKGROUND Benzathine penicillin G every 3 weeks is the standard protocol for secondary prophylaxis for recurrent rheumatic fever. OBJECTIVE Assess the effect of Benzathine penicillin G on Streptococcus sanguinis and Streptococcus oralis in patients with cardiac valvular disease due to rheumatic fever receiving secondary prophylaxis. METHODS Oral streptococci were evaluated before (baseline...
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ژورنال
عنوان ژورنال: Clinical Microbiology and Infection
سال: 2002
ISSN: 1198-743X
DOI: 10.1046/j.1198-743x.2001.00398.x