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Shokravi, Zahra, Haseli, Mehdi, Mehrad, Laleh, Ramazani, Ali. (1399). Distribution of Staphylococcal cassette chromosome mecA (SCCmec) types among coagulase-negative Staphylococci isolates from healthcare workers in the North-West of Iran. , 23(11), 1489-1493. doi: 10.22038/ijbms.2020.48481.11127
Zahra Shokravi; Mehdi Haseli; Laleh Mehrad; Ali Ramazani. "Distribution of Staphylococcal cassette chromosome mecA (SCCmec) types among coagulase-negative Staphylococci isolates from healthcare workers in the North-West of Iran". , 23, 11, 1399, 1489-1493. doi: 10.22038/ijbms.2020.48481.11127
Shokravi, Zahra, Haseli, Mehdi, Mehrad, Laleh, Ramazani, Ali. (1399). 'Distribution of Staphylococcal cassette chromosome mecA (SCCmec) types among coagulase-negative Staphylococci isolates from healthcare workers in the North-West of Iran', , 23(11), pp. 1489-1493. doi: 10.22038/ijbms.2020.48481.11127
Shokravi, Zahra, Haseli, Mehdi, Mehrad, Laleh, Ramazani, Ali. Distribution of Staphylococcal cassette chromosome mecA (SCCmec) types among coagulase-negative Staphylococci isolates from healthcare workers in the North-West of Iran. , 1399; 23(11): 1489-1493. doi: 10.22038/ijbms.2020.48481.11127

Distribution of Staphylococcal cassette chromosome mecA (SCCmec) types among coagulase-negative Staphylococci isolates from healthcare workers in the North-West of Iran

Iranian Journal of Basic Medical Sciences
مقاله 16، دوره 23، شماره 11، بهمن 2020، صفحه 1489-1493    اصل مقاله (473.68 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22038/ijbms.2020.48481.11127
نویسندگان
Zahra Shokravi1؛ Mehdi Haseli2؛ Laleh Mehrad1؛ Ali Ramazani* 2
1Department of Microbiology, Faculty of Basic Science, Islamic Azad University, Science and Research Branch of Tehran, Markazi, Iran
2Biotechnology Department, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
چکیده
Objective(s): Methicillin-resistant coagulase-negative Staphylococci (MR-CoNS) are recognized as one of the major causes of healthcare-associated infections in hospitals. The present investigation aimed to study the prevalence of Staphylococcal cassette chromosome mec (SCCmec) types, along with aminoglycoside modifying enzymes (AMEs) genes in the nasal carriage of MR-CoNS in the north-west of Iran.
Materials and Methods: To assess the potential of coagulase-negative Staphylococci as hidden reservoirs for antibiotic resistance, we analyzed the antimicrobial susceptibility of MR-CoNS using the disk diffusion method. In addition, PCR and multiplex PCR assays were performed to determine the prevalence of AME encoding genes and SCCmec types in methicillin-resistant coagulase-negative Staphylococci isolates.
Results: A total of 51 MR-CoNS isolates were recovered from the anterior nares of healthcare workers. The observed resistance rates to tobramycin, gentamicin, cotrimoxazole, kanamycin, erythromycin, tetracycline, and ciprofloxacin were 74.5%, 68.5%, 57%, 53%, 51%, 49%, and 8%, respectively. Of the 51 tested MR-CoNS isolates, 2(4%) were harboring SCCmec type I, four (8%) were type II, six (12%) type III, eleven (21.6%) type IVa, two (4%) type IVb, two (4%) type IVc, six (12%) type IVd, and two (4%) type V. The rates of prevalence of the aminoglycoside modifying enzyme genes were as follows: aac (6′)/aph (2′′) (28 cases, 55 %), ant (4′)-Ia (20 cases, 39%), and the aph (3´)-IIIa gene (9 cases, 17.6 %).
Conclusion: Subtypes IVa and IVd were the most prevalent SCC elements, and aac (6′)/aph (2′′) was the most common AME gene detected among the MR-CoNS isolates.
کلیدواژه‌ها
Aminoglycosides modifying enzymes Coagulase؛ negative Staphylococci Healthcare workers Methicillin resistance Polymerase chain reaction
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