نتایج جستجو برای: gram positive and gram negative bacteria

تعداد نتایج: 16930196  

Journal: :archives of clinical infectious diseases 0
hossein goudarzi department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran arezou taherpour department of microbiology, kurdistan university of medical sciences, sanandaj, ir iran fatemeh fallah department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran bita pourkaveh infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran soroor erfanimanesh department of microbiology, school of medicine, tehran university of medical sciences, tehran, ir iran ali hashemi department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran; corresponding author: ali hashemi, department of microbiology, school of medicine, shahid beheshti university of medical sciences, koodakyar st., tabnak blv., yaman av., chamran highway, p. o. box: 1985717443, tehran, ir iran. tel: +98-2123872556; +98-9122947439, e-mail:

the nosocomial infections, caused by multi-drug resistant bacteria, are the most important cause of mortality throughout the world. one important mechanism against beta-lactam antibiotics is the production of beta-lactamases. enterobacteriaceae and non-fermentative bacteria, like pseudomonas aeruginosa and acinetobacter baumannnii may produce these enzymes. currently, there is no vaccine to pre...

Journal: :jundishapur journal of microbiology 0
mahsa mirzarazi department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, ir iran seyedeh elham rezatofighi department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, ir iran; department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, ir iran. tel/fax: +98-6113331045 mahdi pourmahdi faculty of veterinary medicine, shahid chamran university of ahvaz, ahvaz, ir iran mohamad reza mohajeri clinical and pathological laboratory of dr. mohajeri, isfahan, ir iran

conclusions with regards to the continuous changing in causative microorganisms isolated from patients with uti and antibiotic sensitivity patterns, it is recommended that bacterial sensitivity patterns in populations are determined in any region annually. . objectives this study aimed to detect and also compare the frequency and drug resistance pattern of gram negative bacteria isolated from p...

ژورنال: توسعه آبزی پروری 2022

Microbial infections outbreak in aquatics are important challenges, and farmers have major difficulties dealing with microbes especially regarding their antibiotic resistance. The purpose of this study was comparative evaluating of antimicrobial activity of silver nanoparticles (Ag NPs) against one gram-positive bacteria (Bacillus spp) and a gram-negative (Vibrio harveyi). In this experimental ...

Journal: :Journal of Venomous Animals and Toxins including Tropical Diseases 2019

Infections are one of the most important causes of death, disability and inappropriate conditions for millions of people around the world. Therefore, the development in prognosis, prevention and treatment of infectious diseases made a considerable progress in designing and synthesis of new antimicrobial drugs. Nowadays, due to the increase in microbial resistance, discovery of new compounds wit...

Journal: :medical journal of islamic republic of iran 0
farrokh a. nakhdjavani from the department of microbiology, medical science faculty, tarbiat modarres university, tehran nasrin moazami , the department of biotechnology, iranian research organization for science and technology, p.o. box 15815-3338, tehran hassan lamea the food science and technology center, postgraduate and advanced research branch, islamic azad university, p.o. box 19395-1775, tehran, islamic republic of iran.

71 samples of milk and dairy products were collected from 18 cities throughout iran. 93 strains of lactic acid bacteria (lab) were isolated and assayed against four opportunistic patho gens including e. coli, proteus and klebsiella as gram-negative and s. aureus as a gram-positive organism. all indicators (organisms) were hospital strains. among isolated bacteria, lactobacilli (37 isolates) had...

Journal: :iranian journal of pharmacology and therapeutics 0
sushil bhargava

sudarshan churna (sc) is very potent ayurvedic medicine ; composed of 42 medicinal plants, which is used traditionally in treatment of malaria, viral fever, and bacterial infection. the present study was designated to evaluate the antimicrobial activity of aqueous extract of sudarshan churna (asc) using the paper disc diffusion method. the asc was found active against the gram-negative bacteria...

The chemical composition of essential oils isolated from the leaves of Cosmos bipinnatus and its antibacterial activity were analyzed by GC-MS and microbroth dilution assay respectively. The essential oil extracted from this plant was predominantly composed of monoterpenes (69.62%) and sesquiterpenes (22.73%). The antibacterial assay showed that the oil had significant inhibitory effects agains...

Journal: :jundishapur journal of microbiology 0
rahem khoshbakht department of pathobiology, school of veterinary medicine, shiraz university, shiraz, ir iran., ir iran +98-7116138697, [email protected]; department of pathobiology, school of veterinary medicine, shiraz university, shiraz, ir iran., ir iran +98-7116138697, [email protected] ayub salimi razi vaccine and serum research institute, ir iran hesamaddin shirzad aski department of pathobiology, school of veterinary medicine, shiraz university, shiraz, ir iran., ir iran +98-7116138697, [email protected] hale keshavarzi school of veterinary medicine, shiraz university, ir iran

background urinary tract infection (uti) is one of the most common bacterial diseasesworldwidethat can be presented asymptomatic or symptomatic, characterized by a wide range of symptoms from mild irritative voiding to bacteremia, sepsis, or even death. in latter decades, widespread utilization of antibiotics has resulted in increased incidence of antibiotic resistance among urinary tract patho...

لکزایی, فرحناز, مرادی, یزدان, ناظمی, ملیکا, کریم پور, مریم, گذری, محسن,

Introduction & Objective: Holothuria leucospilota, sea cucumber, is a species of the Phylum Echinodermata. Sea cucumbers have the most natural products with biological activity. In this study we investigated the antibacterial activity of aqueous and methanol extract of H. leucospilota used against gram positive and gram negative human pathogenic bacteria. Materials & Methods: ...

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