Penicillin-Susceptible Group B Streptococcal Clinical Isolates with Reduced Cephalosporin Susceptibility
نویسندگان
چکیده
منابع مشابه
Penicillin-susceptible group B streptococcal clinical isolates with reduced cephalosporin susceptibility.
We characterized penicillin-susceptible group B streptococcal (PSGBS) clinical isolates exhibiting no growth inhibition zone around a ceftibuten disk (CTB(r) PSGBS). The CTB(r) PSGBS isolates, for which augmented MICs of cefaclor and ceftizoxime were found, shared a T394A substitution in penicillin-binding protein 2X (PBP 2X) and a T567I substitution in PBP 2B, together with an additional G429S...
متن کاملScreening for group B streptococci with reduced penicillin susceptibility in clinical isolates obtained between 1977 and 2005.
Group B streptococcus (GBS; Streptococcus agalactiae) is a leading cause of neonatal invasive infections, and until recently, it was thought to be completely susceptible to penicillin. However, we recently identified several clinical GBS isolates with reduced penicillin susceptibility (PRGBS) whose minimum inhibitory concentrations of penicillin were >0.12 μg/ml, which is above the susceptibili...
متن کاملAntibiotic resistance patterns of group B streptococcal clinical isolates.
OBJECTIVES To determine the in vitro resistance of group B streptococcus (GBS) to 12 antibiotics. To determine if there has been any decrease in sensitivity to the penicillins or other antibiotics currently used for GBS chemoprophylaxis in pregnant women. Find suitable alternative antibiotics to penicillin. Find an antibiotic that will have minimal selective pressure for resistance among the en...
متن کاملAnalysis of multidrug resistant group B streptococci with reduced penicillin susceptibility forming small, less hemolytic colonies
Group B streptococci (GBS; Streptococcus agalactiae) are the leading cause of neonatal invasive diseases and are also important pathogens for elderly adults. Until now, nearly all GBS with reduced penicillin susceptibility (PRGBS) have shown β-hemolytic activity and grow on sheep blood agar. However, we have previously reported three PRGBS clinical isolates harboring a CylK deletion that form s...
متن کاملPractical disk diffusion test for detecting group B streptococcus with reduced penicillin susceptibility.
Although group B streptococcus (GBS) has been considered to be uniformly susceptible to beta-lactams, the presence of GBS with reduced penicillin susceptibility (PRGBS) was recently confirmed genetically. We developed a feasible and reliable method for screening PRGBS in clinical microbiology laboratories using a combination of ceftibuten, oxacillin, and ceftizoxime disks.
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 2014
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.01291-14