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...

hydrocarbons are prone to bacterial and fungal contamination. bacteria and fungi live and proliferate in water droplets within the fuels and on surfaces surrounding them. this can cause corrosion in oil exploration and production, clogging of fuel lines in aviation and higher emissions in diesel combustion engines to state few examples. state-of-the-art is the addition of biocides to fuels, whi...

bacteria make up about half of the living organisms inside of the rumen. however, they do more than half of the work in the rumen. the bacteria work together. some breakdown certain carbohydrates and proteins which are then used by others. some require certain growth factors, such as b-vitamins, which are made by others. some bacteria help to clean up the rumen of others’ end products, such as ...

antibiotic resistance is an important problem in antibiotic treatment of infections, particularly in hospitals. tomatidine is a plant secondary metabolite with antimicrobial and antifungal effects. this study examined the possible synergistic effect tomatidine with several antibiotics against standard and clinical strains of staphylococcus aureus, enterococcus faecalis, pseudomonas aeruginosa a...