کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3348256 1216005 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enterococcal virulence determinants may be involved in resistance to clinical therapy
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروبیولوژی و بیوتکنولوژی کاربردی
پیش نمایش صفحه اول مقاله
Enterococcal virulence determinants may be involved in resistance to clinical therapy
چکیده انگلیسی

The ability of enterococci to acquire resistance to antibiotics and form biofilms in vivo makes these infections, endocarditis in particular, especially difficult to treat. A collection of clinical enterococcal isolates was screened for the presence of various virulence determinants and in an in vitro assay for biofilm formation. Isolates were chosen for the presence or absence of the genes for Esp and gelatinase and different in vitro biofilm phenotypes, and were evaluated in a rat model of endocarditis; all colonized vegetations to similar degrees. Treatment with vancomycin resulted in a 2.7-log reduction in colony-forming unit (CFU) in vegetations for an esp+/gel− strain, compared with no reduction in CFU for an esp+/gel+ or an esp−/gel− isolate. These results suggest that although there may not be an absolute role for individual virulence determinants in infectivity, combinations of factors may play a role in allowing a biofilm infection to be more resistant to therapy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diagnostic Microbiology and Infectious Disease - Volume 58, Issue 1, May 2007, Pages 59–65
نویسندگان
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