MOLECULAR CHARACTERIZATION OF CLINDAMYCIN CONSTITUTIVE AND INDUCIBLE RESISTANCE STAPHYLOCOCCUS AUREUS STRAINS’ ISOLATED FROM NOSE OF CARRIERS

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JAPONI NEJAD A.; REZAZADEH M.; KAZEMIAN H.; FARDMOUSAVI N.; GHAZNAVI RAD E.

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Journal: IRANIAN SOUTH MEDICAL JOURNAL (ISMJ) Year:2014 | Volume:17 | Issue:1 Page(s): 33-41

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Title

MOLECULAR CHARACTERIZATION OF CLINDAMYCIN CONSTITUTIVE AND INDUCIBLE RESISTANCE STAPHYLOCOCCUS AUREUS STRAINS’ ISOLATED FROM NOSE OF CARRIERS

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Keywords

S.AUREUSQ2

D TESTQ2

NASAL CARRIERQ2

INDUCIBLE CLINDAMYCIN RESISTANCEQ2

SPA TYPEQ2

Abstract

Background: Increasing frequency of StaphylococcuS.AUREUS infections and changes in antimicrobial resistance pattern have led to renewed interest in the use of lincosamide-streptogramin B (MLSB) antibiotics for treatment of infections. Since no study has focused on the molecular epidemiology of community -acquired staphylococcuS.AUREUS isolates in Iran, the aim of this study was to determine the molecular typing and prevalence of the macrolides-lincosamides-streptogramins B (MLSB) resistance in community associated S.AUREUS isolated from healthy students at Arak university of Medical sciences.Material and Methods: 568 healthy students from Arak university of Medical sciences were subjected to this study. All samples were subjected to S. aureus-specific isolation procedures. D TEST was performed to determine various phenotypes as well as spa typing done for molecular typing of these strains.Results: Of 568 the 84 community acquired StaphylococcuS.AUREUS, six (7%) were Methiclicin resistant StaphylococcuS.AUREUS (CA-MRSA) and 78 (93%) were Methicillin sensitive StaphylococcuS.AUREUS (CAMSSA) of the 84 S.AUREUS strains, eight (9.5%) showed constitutive resistance with SPA TYPE t660, t701, t304, t5598, t012, t3204, t084 and t1944. Two strains (2.5%) demonstrated inducible resistance with SPA TYPE t9024, t077, two strains (2.5%) were D TEST negative with SPA TYPE t084 and t1149. 72 (85.5%) strains. Illustrated susceptible Phenotype. Among CA-MRSA isolates, two strains had constitutive resistance and four remaining CA-MRSA had susceptible phenotype.Conclusion: The result of this study indicates that in community associated S.AUREUS strains, constitutive MLSB resistance rate is higher than the rate of inducible resistance. Presence of inducible resistance to clindamycin in CA-MRSA strains, warrants that D TEST should be performed to detect this type of resistance. All isolates with inducible and constitutive resistance and D zone negative strains had different molecular typings.

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APA: Copy

JAPONI NEJAD, A., REZAZADEH, M., KAZEMIAN, H., FARDMOUSAVI, N., & GHAZNAVI RAD, E.. (2014). MOLECULAR CHARACTERIZATION OF CLINDAMYCIN CONSTITUTIVE AND INDUCIBLE RESISTANCE STAPHYLOCOCCUS AUREUS STRAINS’ ISOLATED FROM NOSE OF CARRIERS. IRANIAN SOUTH MEDICAL JOURNAL (ISMJ), 17(1), 33-41. SID. https://sid.ir/paper/33769/en

Vancouver: Copy

JAPONI NEJAD A., REZAZADEH M., KAZEMIAN H., FARDMOUSAVI N., GHAZNAVI RAD E.. MOLECULAR CHARACTERIZATION OF CLINDAMYCIN CONSTITUTIVE AND INDUCIBLE RESISTANCE STAPHYLOCOCCUS AUREUS STRAINS’ ISOLATED FROM NOSE OF CARRIERS. IRANIAN SOUTH MEDICAL JOURNAL (ISMJ)[Internet]. 2014;17(1):33-41. Available from: https://sid.ir/paper/33769/en

IEEE: Copy

A. JAPONI NEJAD, M. REZAZADEH, H. KAZEMIAN, N. FARDMOUSAVI, and E. GHAZNAVI RAD, “MOLECULAR CHARACTERIZATION OF CLINDAMYCIN CONSTITUTIVE AND INDUCIBLE RESISTANCE STAPHYLOCOCCUS AUREUS STRAINS’ ISOLATED FROM NOSE OF CARRIERS,” IRANIAN SOUTH MEDICAL JOURNAL (ISMJ), vol. 17, no. 1, pp. 33–41, 2014, [Online]. Available: https://sid.ir/paper/33769/en

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