نتایج جستجو برای: 12 bacterial strains
تعداد نتایج: 894606 فیلتر نتایج به سال:
Background and Objective. Antimicrobial resistance is now a major challenge to clinicians for treating patients. Hence, this short term study was undertaken to detect the incidence of multidrug-resistant (MDR), extensively drug-resistant (XDR), and pandrug-resistant (PDR) bacterial isolates in a tertiary care hospital. Material and Methods. The clinical samples were cultured and bacterial strai...
Heavy metals have deleterious the effects on nodulation and N2 fixation of Rhizobium- Legume symbiosis, due to their inhibitory effects on the growth and activity of both symbionts. This research has been undertaken to evaluate the effect of Cd tolerance of native rhizobial strains on diminution of the Cd detrimental effects on Sinorhizobium meliloti-alfalfa symbiosis. For this purpose, a green...
diarrheal diseases can be caused by viral, bacterial and parasitic infections. this paper provides a preliminary image of diarrhea with regards to etiology and epidemiologic factors in tunisian children less than five years of age.overall, 124 diarrhoeal stools were collected from patients suffering from acute diarrhea and 54 stool samples from healthy children. all stools were examined for the...
ABSTRACT- Aerobic biodegradation is an environmental-friendly biological method that allows micro organisms to remove persistent organic pollutants. Aroclor1254 is a mixed compound containing polychlorinated biphenyls (PCBs) along with persistent organic materials. There is no estimate of Aroclor1254 usage and its release into the environment in Iran. A transformer manufacturing plant in Shiraz...
background and objectives: hospital surfaces can serve as reservoirs of potential pathogenic bacteria.staff hands are the main source of bacterial transmission in hospital. the prevalence of bacteria harboring β– lactamase enzyme in staff hands and hospital surfaces, leads to spread of β–lactamase producing bacteria and ultimate increase of antibiotic resistance nosocomial infections. the aim o...
Dry remains of the herbal species plantain ( Plantago major ), wormwood Artemisia vulgaris ) and reed grass Calamagrostis acutiflora were used as a natural source for isolation β- mannanase producing strains. They isolated by using carob gum single carbon energy. Each chosen plant was found to be colonized with dominant epiphytic group microorganism, although plants had been collected in same l...
Introduction: Traditional medicines cannot adequately reach the target tissues, due to their large size; therefore, the attention of researchers has been drawn to the use of nanomedicines. In fact, the use of biological active compounds loaded on the surface of nanoparticles can be effective the in the promotion of their antimicrobial activity. In the earlier studies, it was demonstrated that b...
Drug resistance (especially multiple drug resistance) in Mycobacterium tuberculosis makes global concerns in treatment and control of tuberculosis. Rapid diagnosis of drug resistant strains of the bacteria has vital importance in the prognosis of the disease. The aim of this study was to identify the mutations responsible for drug resistance in Mycobacterium tuberculosis strains derived from pa...
The toxic effect of nanoscale zero valent iron (nZVI) particles on bacteria from different growth phases was studied. Four bacterial strains namely Escherichia coli strains JM109 and BW25113, and Pseudomonas putida strains KT2440 and F1 were experimented. The growth curves of these strains were determined. Bacterial cells were harvested based on the predetermined time points, and exposed to nZV...
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