Staphylococcal isolates were examined for possible macrolide-inducible resistance to telithromycin. All macrolide-resistant isolates demonstrated telithromycin D-shaped zones. This result did not discriminate between resistance due to an efflux mechanism (msrA) or a ribosomal target modification (ermA or ermC). Inducible telithromycin resistance in staphylococci does not appear to be analogous ...

The incidences of inducible clindamycin resistance at two hospitals (an inner-city hospital and a suburban community hospital) were 7 and 12% for methicillin-resistant Staphylococcus aureus, 20 and 19% for methicillin-susceptible S. aureus, and 14 and 35% for coagulase-negative staphylococci, respectively. Given the variability of inducible resistance to clindamycin found in our two hospitals, ...

Induced clindamycin resistance poses a major problem for the use of this drug to treat staphylococcal infections. An infectious etiology is often implicated in presence CoNS clinical specimens. A total 183 isolates Staphylococci spp. recovered from different specimens were studied. coagulase test was done select negative Staphylococci, and they confirmed by conventional microbiological techniqu...

Clindamycin is an aminoglycoside used in treatment of skin & soft tissue infections caused by both Methicillin resistant Staphylococcus aureus (MRSA) and Methicillin sensitive Staphylococcus aureus (MSSA). Staphylococcus aureus becomes resistant to erythromycin through either erm or msr A genes. Strains with erm-mediated erythromycin resistance may possess inducible clindamycin resistance but a...

Background Antibiotic resistance in S. aureus is one of the major concerns and the rate of MRSA has dramatically increased in recent years. Clindamycin belongs to the MLS group and is used to treat skin and soft tissue infections. Resistance to clindamycin may be inducible (iMLSB) or constitutive (cMLSB) and it is present both in MRSA and MSSA. Treatment failure has been reported both in iMLSB ...

In staphylococci, inducible macrolide-lincosamide-streptogramin B (MLS(B)) resistance is conferred by the erm(C) or erm(A) gene. This phenotype is characterized by the erythromycin-clindamycin "D-zone" test. Although clindamycin appears active in vitro, exposure of MLS(B)-inducible Staphylococcus aureus to this antibiotic may result in the selection of clindamycin-resistant mutants, either in v...

This is the largest Libyan study to date to investigate the prevalence and antimicrobial susceptibility of methicillin-resistant Staphylococcus aureus (MRSA) among health care workers in Tripoli, Libya. A total of 569 doctors and nurses from 4 main hospitals were screened for MRSA with specimens collected from the anterior nares. Isolates from 109 of the 569 subjects (19%) were confirmed as MRS...

Background. Current susceptibility testing recommendations for β-hemolytic streptococci outline testing for clindamycin resistance, including inducible resistance by a positive D-zone phenotype. However, few studies describe the prevalence of clindamycin resistance among invasive GCS and GGS organisms. This study aims to describe the prevalence of clindamycin resistance among GCS/GGS compared w...