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Iranian Journal of Basic Medical Sciences، جلد ۲۵، شماره ۱۲، صفحات ۱۴۱۶-۱۴۲۳
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عنوان انگلیسی High frequency of carbapenem-resistant Enterobacteriaceae fecal carriage among ICU hospitalized patients from Southern Iran
چکیده انگلیسی مقاله Objective(s): The worldwide emergence of carbapenem-resistant Enterobacteriaceae (CRE) has become a major therapeutic concern to medical institutions. To date, no study has determined the frequency and risk factors of inpatients with CRE fecal carriage in Southern Iran. We studied the features of carbapenemase-producing Enterobacteriaceae (CPE) collected from the central ICU of a university hospital.Materials and Methods: Totally, 173 samples, including 124 stool samples from 46 ICU inpatients on admission and different follow-ups, 9 ICU staff, and 40 environmental samples were included. CRE was identified using microbiological methods. Antimicrobial susceptibility was investigated by using the disk diffusion method and E-test. Carbapenemase producers were detected using the mCIM method. Seven carbapenemase genes were characterized. The genetic relationship among 20 CPE was elucidated by PFGE. Results: The overall fecal carriage rate was 28.2%, while CRE acquisition was 6.1%. CRE were classified as Klebsiella pneumoniae (71.4%), Escherichia coli (23.8%), and Enterobacter aerogenes (4.8%). From 21 CRE, 20 (95.2%) produced carbapenemases, of which 10, 15, 10, 25, 5, and 65% were blaKPC, blaSME, blaIMP, blaVIM, blaNDM and blaOXA-48-positive, respectively. Out of 20 CPE, 14 different PFGE patterns were observed, categorized into six clusters, suggestive of non-clonal spread. No difference between the examined risk factors with CRE carriage was shown. Conclusion: The data indicate a high CRE fecal carriage rate among inpatients. Our findings implicate the widespread of OXA-48 carbapenemase together with heterogeneity among CRE with great concern for dissemination and therapeutic threat. Early diagnosis and monitoring of CRE among inpatients are urgent. 
کلیدواژه‌های انگلیسی مقاله Antibiotic resistance, Carbapenemase, Enterobacteriaceae, Fecal carrier, PFGE
نویسندگان مقاله | Nima Davari
Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran


| Reza Khashei
Department of Bacteriology and Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran


| Bahman Pourabbas
Professor Alborzi Clinical Microbiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran


| Vajiheh Sadat Nikbin
Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran


| Farid Zand
Anesthesiology and Critical Care Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
نشانی اینترنتی https://ijbms.mums.ac.ir/article_21238.html
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