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   high prevalence of blaoxa-48 and blandm-producing carbapenem-resistant klebsiella pneumoniae isolated from clinical samples in shahid rajaei hospital in tehran, iran  
   
نویسنده jafari alireza ,arya mohammad javad ,mokhtari maryam ,mahdieh nejat ,mojtahedi ali
منبع jundishapur journal of microbiology - 2022 - دوره : 15 - شماره : 10 - صفحه:1 -8
چکیده    Background: due to the increasing antibiotic resistance, treating infections caused by klebsiella pneumoniae has become more challenging.objectives: the present study aimed to investigate the prevalence of blaoxa-48 and blandm producing carbapenem-resistant k. pneu-moniae isolated from clinical samples in shahid rajaei hospital in tehran, iran.methods: various clinical samples were collected from 1,186 patients admitted with open heart surgery in two wards (icu and surgery) in shahid rajaei heart hospital in tehran, iran. klebsiella pneumoniae isolates were identified by standard microbiologic tests. antimicrobial susceptibility of isolates were determined by disk di usion and e-test methods. a modified carbapenem inac-tivation method (mcim) was performed to detect the presence of carbapenemase. antibiotic resistance genes were detected using conventional polymerase chain reaction (pcr) by primers targeting blaoxa-48, blaspm, blaimp, blavim, and blandm genes.results: a total of 131 clinical isolates of k. pneumoniae were isolated and 45.8% (60/131) of them were resistant to carbapenem. kleb-siella pneumoniae isolates showed the highest resistance rate (100%) to ceftriaxone, ceftazidime, cefazolin, and cefepime and the maximum sensitivity to tigecycline (96.7%). the carbapenemase-encoding blaoxa-48 and blandm-1 genes were detected in 96.7% and 66.7% of isolates, respectively. eight di erent clusters of the isolates, considering a ≥ 80% homology cut-o , were shown with the same rep-pcr pattern. clusters a, b, c, d, e, f, g, and h included 20, 11, 7, 6, 6, 3, 2, and 2 members, respectively.conclusions: the rapd-pcr method reveals the clonal relationship between isolates and may help improve infection control pro-cedures.
کلیدواژه klebsiella pneumoniae ,antibiotics resistance ,carbapenem-resistant ,blaoxa-48
آدرس guilan university of medical sciences, urology research center, razi hospital, school of medicine, iran, sina pathobiology lab, sina pathobiology lab, iran, guilan university of medical sciences, school of medicine, department of microbiology, iran, iran university of medical sciences, cardiogenetic research center, rajaei cardiovascular medical and research center, iran, guilan university of medical sciences, school of medicine, department of microbiology, iran
پست الکترونیکی mojtahedi99.a@gmail.com
 
     
   
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