نتایج جستجو برای: gram negative bacteria

تعداد نتایج: 717890  

Journal: :iranian journal of public health 0
sh.hakimi m.sigaroodi m.mohammadi b.ghorayshi s.mahajer

a total number of 259 gram negative bacteria (entero-bacteria) isolated during the years 1973-1974 was examined. these strains were isolated from sick children referred and or hospitalized in a children hospital in tehran. the strains consisted of ; 131e.coli, 52 salmonella, 40 klebsiella, 18 shigella, 13 proteus, 3 enterobacter and 2 citrobacter. sensitivity tests were performed according to t...

Journal: :applied biotechnology reports 0
jafar khezri national institute of genetic engineering and bio-technology iran, tehran fathollah ahmadpour applied biotechnology research center, baqiyatal-lah university of medical sciences, tehran, iran samira talebi national institute of genetic engineering and bio-technology iran, tehran

bacterial utilize a multitude of methods to secretion of specific substrate across phospholipid membranes. these bacterial strategies can play many roles in promoting bacterial process, from enhancing pathogenesis to bacterial response to environmental condition. the secretion in bacterial species transfer and release performance substance such as proteins, enzymes and metabolites to environmen...

Journal: :iranian journal of public health 0
r ranjbar molecular biology research center, baqiyatallah university of medical sciences, tehran, iran mt haghi-ashtiani laboratory of microbiology, children's medical center, school of medicine, tehran university of medi n jonaidi jafari health research center, baqiyatallah university of medical sciences, tehran, iran m abedini laboratory of microbiology, children's medical center, school of medicine, tehran university of medi

background: urinary tract infection (uti) is considered as the most common bacterial infectious disease seen among the pediatric patients. the aim of this study was to investigate the prevalence and antimicrobial susceptibility of bacterial uropathogens isolated from the pediatric patients with urinary tract infections. methods: this descriptive study was conducted in children medial center, te...

Journal: :medical laboratory journal 0
shirin sheikholeslami pharmaceutical sciences branch, islamic azad university, tehran, iran seyed mahdi rezayat pharmaceutical sciences branch, islamic azad university, tehran, iran reza hosseini doust pharmaceutical sciences branch, islamic azad university, tehran, iran hamid reza ahmadi ashtiani islamic azad university, pharmaceutical sciences branch, tehran, iran

abstract       background and objective: the spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. the aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of zataria multiflora on five gram-positive and gram-negative bac...

Journal: :journal of medical bacteriology 0
mohammad mohammadzadeh department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran. mahnaz tavakoli department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran. abolfazl mohebi department of microbiology, faculty of sciences, islamic azad university, karaj, iran. samad aghayi department of microbiology, faculty of sciences, islamic azad university, karaj, iran.

background :   imipenem-resistant gram negative bacteria, resulting from metallo-beta-lactamase (mbls)-producing strains have been reported to be among the important causes of nosocomial infections and of serious therapeutic problem worldwide. because of their broad range, potent carbapenemase activity and resistance to inhibitors, these enzymes can confer resistance to almost all beta-lactams....

Journal: :international archives of health sciences 0
fahimeh nourbakhsh department of pharmacodynamy and toxicology, faculty of pharmacy, mashhad university of medical sciences, mashhad, ir iran

aims: the internal unit and icu of hospitals are a suitable environment for growing of bacteria such as staphylococcus epidermidis and pseudomonas, acinetobacter. the aim of our study was to evaluate the effect of different disinfectants on bacteria isolated from the surface of hospitals in isfahan. instrument & methods: in this study, 200 samples were randomly selected from different parts of ...

Journal: :iranian journal of health sciences 0
tahereh jasemizad department of environmental health engineering, school of public health and environmental science and technology research center, shahid sadoughi university of medical sciences, yazd, iran mehdi mokhtari department of environmental health engineering, school of public health and environmental science and technology research center, shahid sadoughi university of medical sciences, yazd, iran hengameh zandi department of microbiology, school of medicine, shahid sadoughi university of medical sciences, yazd, iran taher shahriari department of environmental health engineering, school of public health and social determinants of health research center, birjand university of medical sciences, birjand, iran fatemeh sahlabadi department of environmental health engineering, school of public health and social determinants of health research center, birjand university of medical sciences, birjand, iran akram montazeri environmental health expert, shahid sadoughi accidents burns hospital, yazd, iran

as pseudomonas, acinetobacter, and staphylococcus that appropriate disinfection can reduce these pathogens. the aim of this study was to evaluate the effect of different disinfectants on gram-negative bacteria isolated from the surface of accidents and burn hospital in yazd. materials and methods: in this study, 240 samples were randomly collected from different parts of accidents and burn hosp...

Journal: :journal of research in medical sciences 0
shuhua li hengmo rong qinliang guo yifei chen guqing zhang jiong yang

background: serum procalcitonin (pct) levels differ in patients with bacterial or fungal infections and are significantly elevated in patients with gram-negative bacteremia. we evaluated the diagnostic accuracy of different inflammatory markers to discriminate sepsis caused by different pathogens. materials and methods: we included 328 episodes of bacteremia from 292 patients with sepsis and 31...

Journal: :infection, epidemiology and medicine 2016
farzaneh mehraban mahmoud nateghi rostami masoumeh douraghi masoumeh dolati

background: the role of the hospital environment as a source of dissemination of pathogens is critical. environmental surfaces in the intensive care units (icus) are suitable for the growth of gram-negative bacteria that normally circulate between the environment and patients and can cause outbreaks of nosocomial infections. in this study, the prevalence of gram-negative bacilli in the environm...

Journal: :journal of medical bacteriology 0
mohammad mohammadzadeh 1department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran. mahnaz tavakoli 1department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, iran. abolfazl mohebi 2department of microbiology, faculty of science, islamic azad university, karaj, iran. samad aghayi 2department of microbiology, faculty of science, islamic azad university, karaj, iran.

background :   imipenem-resistant gram negative bacteria, resulting from metallo-beta-lactamase (mbls)-producing strains have been reported to be among the important causes of nosocomial infections and of serious therapeutic problem worldwide. because of their broad range, potent carbapenemase activity and resistance to inhibitors, these enzymes can confer resistance to almost all beta-lactams....

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