BETA-LACTAMASE ENCODED GENES BLATEM AND BLACTX AMONG ACINETOBACTER BAUMANNII SPECIES ISOLATED FROM MEDICAL DEVICES OF INTENSIVE CARE UNITS IN TEHRAN HOSPITALS

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KHALILZADEGAN SARA; SADE MOJTABA; GOUDARZI HOSSEIN; ESLAMI GITA; HALLAJZADEH MASOUMEH; FALLAH FATEMEH; YADEGARYNIA DAVOOD

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Journal: Jundishapur Journal of Microbiology Year:2016 | Volume:9 | Issue:5 Page(s): 0-0

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Title

BETA-LACTAMASE ENCODED GENES BLATEM AND BLACTX AMONG ACINETOBACTER BAUMANNII SPECIES ISOLATED FROM MEDICAL DEVICES OF INTENSIVE CARE UNITS IN TEHRAN HOSPITALS

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Keywords

LACTAMASE GENES

ANTIMICROBIAL RESISTANCE

DISINFECTANTS

ACINETOBACTER BAUMANNII

Abstract

Background: Excessive consumption of antimicrobial materials in hospitals is considered as the main encoder leading to the emergence, development and acquisition of new bacterial resistance to beta-lactamase.Objectives: Owing to the lack of proper information regarding the mechanism of the bacterial resistance to antibiotics and responsible genes in the country, the current study aimed to consider the resistance or sensitivity of the ACINETOBACTER BAUMANNII multi drug resistant (MDR) isolates facing 2% glutaraldehyde. The study was conducted in the selected intensive care units in Tehran hospitals, Iran, in 2013.Materials and Methods: In this study conducted over a period of 10 months, A. baumannii species were isolated by bacterial culture following biochemical tests from intensive care units (ICUs) of some hospitals in Tehran, Iran (Fayazbaksh, Taleghani, ImamKhomeini, Valiasr, Labafinejad). The resistance and sensitivity of the isolates to antibiotics were considered according to the clinical and laboratory standard institute CLSI (2012) guidelines. By multiplex PCR method, blaCTX and blaTEM genes were detected and finally, MDR strains were treated with 2% glutaraldehyde. PCR was used for each strain of MDR using specific primers.Results: In the current study, 131 A. baumannii isolates (22.3%) out of 588 were studied. The level of resistance to various antibiotics was in the range of 69.4% to 100%. The frequencies of blaTEM and blaCTX genes were 3.2% and 19.4%, respectively. MIC50% and MIC90% of imipenem and meropenem antibiotics were 32±1 mg/mL and 64±1 mg/mL, respectively (P < 0.9). However no resistance to glutaraldehyde was observed. Different bands of MDR strains were observed in the PCR product by electrophoresis.Conclusions: It seems that besides the variety and prevalence of blaTEM and blaCTX, enormous mechanisms such as porin and leaking systems (efflux pumps) are responsible for the information of the A. baumannii resistance to DISINFECTANTS. The study on an accurate consideration of the resistance in strains and other microorganisms is advised.

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APA: Copy

KHALILZADEGAN, SARA, SADE, MOJTABA, GOUDARZI, HOSSEIN, ESLAMI, GITA, HALLAJZADEH, MASOUMEH, FALLAH, FATEMEH, & YADEGARYNIA, DAVOOD. (2016). BETA-LACTAMASE ENCODED GENES BLA_TEM AND BLA_CTX AMONG ACINETOBACTER BAUMANNII SPECIES ISOLATED FROM MEDICAL DEVICES OF INTENSIVE CARE UNITS IN TEHRAN HOSPITALS. JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM), 9(5), 0-0. SID. https://sid.ir/paper/317626/en

Vancouver: Copy

KHALILZADEGAN SARA, SADE MOJTABA, GOUDARZI HOSSEIN, ESLAMI GITA, HALLAJZADEH MASOUMEH, FALLAH FATEMEH, YADEGARYNIA DAVOOD. BETA-LACTAMASE ENCODED GENES BLA_TEM AND BLA_CTX AMONG ACINETOBACTER BAUMANNII SPECIES ISOLATED FROM MEDICAL DEVICES OF INTENSIVE CARE UNITS IN TEHRAN HOSPITALS. JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM)[Internet]. 2016;9(5):0-0. Available from: https://sid.ir/paper/317626/en

IEEE: Copy

SARA KHALILZADEGAN, MOJTABA SADE, HOSSEIN GOUDARZI, GITA ESLAMI, MASOUMEH HALLAJZADEH, FATEMEH FALLAH, and DAVOOD YADEGARYNIA, “BETA-LACTAMASE ENCODED GENES BLA_TEM AND BLA_CTX AMONG ACINETOBACTER BAUMANNII SPECIES ISOLATED FROM MEDICAL DEVICES OF INTENSIVE CARE UNITS IN TEHRAN HOSPITALS,” JUNDISHAPUR JOURNAL OF MICROBIOLOGY (JJM), vol. 9, no. 5, pp. 0–0, 2016, [Online]. Available: https://sid.ir/paper/317626/en

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