background: to determine prospectively the prevalence of anaerobic and aerobic infection in early onset (during 72 hours of age) neonatal sepsis, in tehran vali-e-asr hospital. methods: among all the live birth, neonates suspecting of having septicemia were investigated for isolation of micro­organisms. culture bottle containing enriched tryptic soy broth was used for standard blood culture sys...

introduction: antibiotics have the potential to adversely affect the microbial community. for anaerobic digestion, a sufficient methanogenic population needs to be preserved in the system. the main aim of this study was determination of inhibitory concentration of oxytetracycline on methanogenic bacteria. methods: a 120 ml jacketed bioreactor with a 90 ml working volume was inoculated granular ...

although the conventional therapies have obviously improved the conditions of patients with cancer, some mechanisms of resistance have led scientists to use alternative agents that can penetrate in most solid tumors. furthermore, the success of cancer therapies depends on limiting the uptake of toxins to normal tissues and their selectivity to malignant cells. the involvement of natural and gen...

background: wound infections are associated with increased morbidity and mortality. etiologic agents of wound infections vary with geographical locations. this study was conducted to assess the prevalence of wound infections, the effect of age and gender on the prevalence as well as the etiologic agents and their susceptibility to antibacterial agents. methods: wound swabs collected from 2061 p...

bacteria usually cause disease in the gastrointestinal tract by colonization and growth in the gastrointestinal tract, where the micro organisms may invade the tissues of host or secretion of an exotoxin that is performed in food and then ingested by the host, examples of second group include: staphylococcal, bacillus cereus, clostridial (c.botulinum and c.perfringens type a) toxin. in this stu...

in order to evaluate the efficiency of inoculation of chickpea seeds with mesorhizobium and application of nitrogen and zinc on yield and yield components of rainfed chickpea an experiment was carried out in research station of shirvan-chardavel, ilam. the experiment was conducted in randomized complete block design (rcbd) with six treatments including mesorhizobium inoculation, nitrogen (40 kg...

abstract asthma is a common chronic inflammatory and complex disease in children with many contributing (including genetic and environmental) factors. this study aims to review the impact of infections in children with asthma. different websites including googlescholar, yahoo, pubmed, sid.ir, magiran, irandoc, iranmedex ,embase and hand searching were searched for pertinent articles with keywor...

several species of magnetotactic bacteria have been discovered recently. these bacteria synthesize intracellular magnetic nanoparticles in specific sizes and shapes and arrange them in chains. these particles called magnetosomes and can be used for drug-delivery, cell-targeting and hyperthermia. magnetotactic bacteria navigate along the magnetic field; this process is known as ‘magnetotaxis’ wh...