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Title

Determination of Antimicrobial Resistance Pattern in Methicillin-Resistant Staphylococcus saprophyticus and Staphylococcus epidermidis and Detection of Resistance Genes to Clindamycin and Erythromycin

Pages

  169-178

Abstract

 Background and Aims: Clindamycin is one of the selective drugs for treatment of staphylococcal infections. Molecular methods can complete phenotypic methods to diagnosis induction resistance to clindamycin. The aim of this study was to identify the genes responsible for the resistance to clindamycin and erythromycin, and determine their antibiotic resistance pattern. Materials and Methods: 100 isolates of Staphylococcus epidermidis and Staphylococcus saprophyticus were isolated from 466 different clinical specimens using biochemical tests. Using the disc diffusion method, Antibiogram susceptibility test was conducted to determinate Lincosamides and tetracycline resistance pattern. Then ermA, ermB, ermC and msrA genes were identified and investigated by PCR method. Results: Out of 100 strains of coagulase-negative staphylococci isolated from clinical specimens, 5 isolates were identified as S. saprophyticus (5%) and 55 isolates of S. epidermidis (55%), respectively. Out of the 5 isolated of S. saprophyticus, 2 (40%) isolates were resistant to methicillin and one (20%) isolate had D phenotype. In addition, 1 isolate had ermA gene and 1 isolate had ermB. Out of the 55 isolates of S. epidermidis, 25 (45. 45%) isolates were resistant to methicillin, of which nine (36%) isolates had D phenotype. Also, 4 (16%) isolates had ermA gene, 3 (12%) isolates had ermB, 6 (24%) isolates had ermC and 1 (4%) isolate was carrying the msrA. Conclusions: The phenotypic pattern of resistance to macrolide-Lincosamides groups does not have a high degree of accuracy in detecting methicillin-resistant MLSB strains.

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    APA: Copy

    Tahmasebi, Hamed, DEHBASHI, SANAZ, & ARABESTANI, MOHAMMAD REZA. (2018). Determination of Antimicrobial Resistance Pattern in Methicillin-Resistant Staphylococcus saprophyticus and Staphylococcus epidermidis and Detection of Resistance Genes to Clindamycin and Erythromycin. IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY, 12(3 ), 169-178. SID. https://sid.ir/paper/132720/en

    Vancouver: Copy

    Tahmasebi Hamed, DEHBASHI SANAZ, ARABESTANI MOHAMMAD REZA. Determination of Antimicrobial Resistance Pattern in Methicillin-Resistant Staphylococcus saprophyticus and Staphylococcus epidermidis and Detection of Resistance Genes to Clindamycin and Erythromycin. IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY[Internet]. 2018;12(3 ):169-178. Available from: https://sid.ir/paper/132720/en

    IEEE: Copy

    Hamed Tahmasebi, SANAZ DEHBASHI, and MOHAMMAD REZA ARABESTANI, “Determination of Antimicrobial Resistance Pattern in Methicillin-Resistant Staphylococcus saprophyticus and Staphylococcus epidermidis and Detection of Resistance Genes to Clindamycin and Erythromycin,” IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY, vol. 12, no. 3 , pp. 169–178, 2018, [Online]. Available: https://sid.ir/paper/132720/en

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