FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASES, CTX-M TYPE IN CLINICAL SALMONELLA SPP ISOLATED IN TEHRAN, IRAN

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MERCEDEH TAJBAKHSH M.; HAMIDIAN M.; RAHBAR M.; MOHAMMADZADEH M.; DABIRI H.; ZALI M.R.

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Journal: Iranian Journal of Infectious Diseases and Tropical Medicine Year:2010 | Volume:15 | Issue:50 Page(s): 39-44

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Title

FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASES, CTX-M TYPE IN CLINICAL SALMONELLA SPP ISOLATED IN TEHRAN, IRAN

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Keywords

SALMONELLAQ3

EXTENDED-SPECTRUM BETA-LACTAMASES (ESBL)Q3

BLA CTX-M-15Q3

Abstract

Background and objective: SALMONELLA infections is an important public health problem. In the world. Nontyphoidal gastroenteritis of SALMONELLA are commonly self limited, but treatment with third generation of cephalosporines are a suitable choice for enteric fevers and invasive salmonellosis. Resistance to these antimicrobial and production of extended-spectrum betalactamases (ESBL) in bacteria have been increased recently. blaCTX-M-type enzymes belong to class A group of ESBL which rapid spreading among Enterobacteriacea is a major epidemiologically problem. The aim of this study is to determine the type of blaCTX-M in SALMONELLA spp.Material and methods: 174 SALMONELLA Spp isolated from stool culture of patients with gastroenteritis symptom during July 2007 to December 2009. Due to screen ESBL-producers strains, the isolates were tested for antimicrobial susceptibility by fifteen antibiotic using disk diffusion method.Suspicious strains were tested by Kirby-Bauer, combined disk and minimal inhibitory concentrations methods. ESBL positive strains were tested for blaCTX-M, bla TEM and blaSHV genes by PCR.Results: according to antibiogram susceptibility tests, the highest resistant rate belongs to nalidixic acid (49.4%) and tetracycline (43%). phenotypic tests were shown that seven strains were ESBL positive. DNA sequencing of PCR product reveals that the all bla CTX-M positive strains (n=6) belong to CTX –M-15 classes.Conclusion: increased dissemination of broad spectrum beta lactam mediated by bla-CTX-M 15, in SALMONELLA in Iran, suggests that its incidence in Enterobacteriaceae to be monitored. Horizontal transfer and expression of this gene among Enterobacteriaceae lead to present of high level ESBL-producing bacteria in future.

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APA: Copy

MERCEDEH TAJBAKHSH, M., HAMIDIAN, M., RAHBAR, M., DABIRI, H., MOHAMMADZADEH, M., & ZALI, M.R.. (2010). FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASES, CTX-M TYPE IN CLINICAL SALMONELLA SPP ISOLATED IN TEHRAN, IRAN. IRANIAN JOURNAL OF INFECTIOUS DISEASES AND TROPICAL MEDICINE, 15(50), 39-44. SID. https://sid.ir/paper/53005/en

Vancouver: Copy

MERCEDEH TAJBAKHSH M., HAMIDIAN M., RAHBAR M., DABIRI H., MOHAMMADZADEH M., ZALI M.R.. FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASES, CTX-M TYPE IN CLINICAL SALMONELLA SPP ISOLATED IN TEHRAN, IRAN. IRANIAN JOURNAL OF INFECTIOUS DISEASES AND TROPICAL MEDICINE[Internet]. 2010;15(50):39-44. Available from: https://sid.ir/paper/53005/en

IEEE: Copy

M. MERCEDEH TAJBAKHSH, M. HAMIDIAN, M. RAHBAR, H. DABIRI, M. MOHAMMADZADEH, and M.R. ZALI, “FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASES, CTX-M TYPE IN CLINICAL SALMONELLA SPP ISOLATED IN TEHRAN, IRAN,” IRANIAN JOURNAL OF INFECTIOUS DISEASES AND TROPICAL MEDICINE, vol. 15, no. 50, pp. 39–44, 2010, [Online]. Available: https://sid.ir/paper/53005/en

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