the purpose of this study was to examine the acute and sub-acute effects of diazinon onhistopathological parameters of liver tissue and blood level of hepatic enzymes of male commonfrog (rana ridibunda). frogs were assigned to 9 groups (n=8, meaning 8 frogs in each group):control and treatment groups with 30, 60, 90 and 120 μg/l diazinon in water for one day or oneweek. hepatic enzymes containi...

objective(s): methylsulfonylmethane (msm) is a sulfur-containing compound found in a wide range of human foods including fruits, vegetables, grains and beverages. in this study the effect of msm pretreatment on acetaminophen induced liver damage was investigated. materials and methods: male sprague dawley rats were pretreated with 100 mg/kg msm for one week. on day seven rats were received acet...

background: the present study was performed to investigate the effects of trace elements particularity se, zn and cu on tumor genesis in breast cancer. methods: the inhibitory effect of se, zn and cu, on telomerase activity was analyzed in human breast tumor tissues and breast cancer (t47d) cells. tissue specimens from 24 women with benign breast disease and 32 women with breast cancer specimen...

background and objective: adult lead poisoning commonly occurs due to workplace exposures. neuro- psychological symptoms such as insomnia are reported as the early symptoms of chronic lead intoxication. this study aimed to evaluate association between blood lead level (bll) of workers from lead-zinc factories and their sleep quality. materials and methods : a cross-sectional study was performed...

consumption of leaded gasoline in iran cause to emit lead compounds in ambient air of gasoline stations and is known to effect on workers health in these locations. the objectives of this study were assessment of ambient lead levels and blood lead levels of gasoline station workers in hamadan city, iran. for this purpose, 82 samples were obtained in ambient air of gasoline station locations. se...

Background: Angiotensin converting enzyme (ACE) upregulation in stromal cells of joints affected by rheumatoid arthritis may lead to higher tissue angiotensin II that is a vasoconstrictor and mitogen factor. To date, the role of angiotensin II on regulating blood flow in inflamed joints has not been studied. Methods: Acute and chronic joint inflammation was induced in rabbits by intra-articular...