نتایج جستجو برای: beta lactamase

تعداد نتایج: 193773  

ژورنال: Medical Laboratory Journal 2010

Bachground and objectives: Hospital surfaces can serve as reservoirs of potential pathogen bacteria. Staff hands are the most important source of transmission in hospital. The prevalence of β–lactamase producer bacteria in staff hands and hospital surfaces, increase antibiotic resistance nosocomial infection. The aim of this study was to survey the spread of beta-lactam resistance St...

Journal: :archives of clinical infectious diseases 0
fatemeh bagheri bejestani pharmaceutical sciences branch, islamic azad university, tehran, ir iran mojdeh hakemi-vala department of microbiology, medical school, shahid beheshti university of medical sciences, tehran, ir iran; department of microbiology, medical school, shahid beheshti university of medical sciences, velenjak, tehran, ir iran. tel: + 98-2123872556, fax: + 98-2122439964 raheleh momtaheni pharmaceutical sciences branch, islamic azad university, tehran, ir iran ozra bagheri bejestani molecular biology research center, baghiyatallah university of medical sciences, tehran, ir iran mehrdad gholami department of microbiology, medical school, shahid beheshti university of medical sciences, tehran, ir iran

conclusions despite of high resistance of p. aeruginosa, the resistance rate of p. aeruginosa strains isolated from children in the current study was not high. then accurate prescription of antibiotics can decrease the speed of resistance creation. background the first report of pseudomonas aeruginosa (p. aeruginosa) carbapenem resistant strains, and especially the metallo-beta-lactam (mbl) pro...

Journal: :international journal of infection 0
mehdi ghamgosha department of microbiology, islamic azad university, jahrom, ir iran; department of microbiology, islamic azad university, jahrom, ir iran. email: shahram shahreki zahedani department of medical microbiology, zahedan university of medical sciences, zahedan, ir iran farshid kafilzadeh department of microbiology, islamic azad university, jahrom, ir iran zakaria bameri infectious diseases and tropical medical research center, zahedan university of medical science, zahedan, ir iran

conclusions regarding the importance of metallo-beta-lactamase (mbl) produced by pseudomonas spp. isolated from hospitals, quick identification of clinical samples should be considered as an important and basic step to treat and control infections caused by pseudomonas spp. results strains with mic > 4 µg/ml were investigated by phenotypic and genotypic methods. in the current study the rate of...

اشراقیان, محمدرضا, بختیاری, روناک, حنفی ابدر, مجتبی, رستگارلاری, عبدالعزیز, سلطان‌دلال, محمدمهدی, صباغی, آیلار, فرد صانعی, عاطفه, فلاح مهرآبادی, جلیل, ملاآقامیرزایی, هدروشا,

Background: Beta- lactamase enzymes are the most important resistant factors to beta lactam antibiotics among gram negative bacteria. Nowadays, the prevalence of beta- lactamase infection is increasing worldwide and drawn the scientists attention as an important subject. Due to high prevalence of bacteria contained TEM beta lactamase and AmpC enzymes, using molecular methods especially designin...

Journal: :Journal of infection in developing countries 2010
Supriya Upadhyay Malay Ranjan Sen Amitabha Bhattacharjee

INTRODUCTION Infections caused by Pseudomonas aeruginosa are difficult to treat as the majority of isolates exhibit varying degrees of beta-lactamase mediated resistance to most of the beta-lactam antibiotics. It is also not unusual to find a single isolate that expresses multiple beta-lactamase enzymes, further complicating the treatment options. Thus the present study was designed to investig...

rezaeian, Abbasali, shaheli, Marjan, kangavari, Sepideh ,

Aim and Background:Eradicating infections is difficult due to the presence of genes on the introns, especially the beta-lactamase enzymes and  The importance of their resistance is high.The purpose of this study was to determine the beta-lactamase genes (OXA-2 , OXA-10) , Integron class 1  and antibiotic resistance. Material and methods:In this cross sectional descriptive study, 120 Pseudomona...

Journal: :Antimicrobial agents and chemotherapy 1982
H C Neu

The beta-lactamase inhibitors clavulanic acid and sulbactam were combined with mecillinam. beta-Lactamase-containing Escherichia coli resistant to mecillinam was synergistically inhibited by both clavulanic acid and sulbactam. beta-Lactamase-containing Enterobacter was synergistically inhibited, but strains lacking beta-lactamases were not synergistically inhibited. Synergistic inhibition was n...

Journal: :iranian journal of microbiology 0
f shahcheraghi department of bacteriology, pasteur institute of iran, tehran, iran. m abbasalipour department of bacteriology, pasteur institute of iran, tehran, iran and faculty of biology science, shahid beheshti university, tehran. iran. mm feizabadi department of microbiology, school of medicine, tehran university of medical sciences, tehran, iran. gh ebrahimipour faculty of biology science, shahid beheshti university, tehran. iran. n akbari department of bacteriology, pasteur institute of iran, tehran, iran.

background and objective : carbapenems are therapeutic choice against infections caused by gram-negative bacilli including strains of acinetobacter baumannii. resistance to these antibiotics is mediated by efflux pumps, porins, pbps and ß-lactamases. the aim of this study was to determine the possibility of existence of mbls, oxas and ges-1 betalactamase genes among clinical isolates of acineto...

Journal: :jundishapur journal of microbiology 0
mohammad yousef alikhani department of microbiology, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran zahra karimi tabar department of microbiology, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran fatemeh mihani department of microbiology, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran enayat kalantar department of microbiology, school of medicine, alborz university of medical sciences, alborz, ir iran pegman karami department of microbiology, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran mahnaz sadeghi tuberculosis and lung research center, tabriz university of medical sciences, tabriz, ir iran

conclusions: this study highlighted the need to establish antimicrobial resistance surveillance networks for p. aeruginosa to determine the appropriate empirical treatment regimens. the high prevalence of multidrug resistance and production of esbls in p. aeruginosa isolates confirms the necessity of protocols considering these issues in the hospitals. results: the resistance against broad-spect...

Journal: :jundishapur journal of microbiology 0
roya rafiee department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran fereshteh eftekhar department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran; department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran. tel: +98-2129903208, fax: +98-2122431664 seyyed ahmad tabatabaei department of pediatrics, shahid beheshti university of medical sciences, tehran, ir iran dariush minaee tehrani department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran

conclusions a high prevalence of multiple β-lactamase production was observed among the ampc producers (60%), of which the majority co-produced ampc and mbl. the current study results showed correlation between β-lactamase production and the presence of antibiotic resistance genes in the isolates. results all isolates were multidrug resistant. ampc, esbl and mbl production were observed in 35 (...

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