objective(s): buthionine sulfoximine (bso) inhibits synthesis of glutathione as the main intracellular antioxidant. the aim of the present study is to investigate the effect of bso-induced oxidative stress on histological structure of testis, testosterone secretion and semen parameters. materials and methods: thirty male balb/c mice were divided into 3 groups. in control group, the mice did not...

objective(s) oxidative stress plays an important role in diabetic nephropathy pathogenesis. rosmarinic acid, a plant phenolic compound, was first used as an antioxidant agent for inhibition of diabetic nephropathy. material and methods forty male rats were uninephrectomized from the left flank.the rats were divided in four groups randomly; group one as control, group two diabetic untreatment, g...

objective(s) nonenzymatic glycosylation (glycation) occurs in many macromolecules in aging and diabetes due to exposure of biomolecules to high level of glucose. glycation can changes function, activities and structure of many biomolecules. considering this important role of transferrin (trf) in iron transport and antioxidant activity in plasma this study was carried out to investigate the effe...

objectives:vagal pathways in gastrointestinal tract are the most important pathways that regulate ischemia/reperfusion (i/r).  gastrointestinal tract is one of the important sources of melatonin production. the aim of this study was to investigate probable protective effect of the interaction between vagus nerve and melatonin after i/r. materials and methods:this study was performed in male rat...

objective(s):to evaluate the effect of graptophyllum pictum on lipid peroxidation and tissue antioxidant enzymes in liver and kidney of gentamicin induced nephrotoxic rats. materials and methods: animals were grouped into 6: group 1 received gum acacia, group 2 received g. pictum ethanol extract (300 mg/kg), group 3 received gentamicin, groups 4, 5, 6 received gentamicin along with g. pictum at...

conclusions troxerutin may reduce the vascular complications and tissue injuries induced by chronic diabetes in rat aorta through increasing the activity of tissue antioxidant system and reducing the level of lipid peroxidation. materials and methods male wistar rats were randomly divided into four groups (n = 8/each): control, control plus troxerutin, diabetic and diabetic plus troxerutin. dia...

introduction: free radicals are molecules or atoms with single electron that results in reactions thus causing severe damages to the body’s macromolecules. by preventing the formation of free radicals, repairing damages caused by radical’s activities, increasing the excretion of the damaged molecules and minimizing the cellular mutation, the antioxidant defense system contrasts the damages caus...

background: cadmium (cd) intoxication can cause oxidative stress and involve the antioxi-dant defense system in hepatocytes. administration of vitamin c, chitosan, or a combination of both may prevent cd-induced oxidative damage. methods:cyprinus carpio were distributed into six groups. the control group received normal feed (group i). group ii was exposed to 0.2 mg.l-1 cadmium chloride. group ...

background: there is much evidence indicating that natural substances from edible and medicinal plants possess powerful antioxidant and hepatoprotective activities. the objective of the present study was to investigate the potential hepatoprotective effect of silymarin in fish exposed to malathion. methods: zebra cichlid fish were allocated into five groups of which one group received normal fe...

objective(s): to understand the role of mitochondrial respiration in cisplatin sensitivity, we have employed wild-type and mitochondrial dna depleted rho0 yeast cells. materials and methods: wild type and rho0 yeast cultured in fermentable and non-fermentable sugar containing media, were studied for their sensitivity against cisplatin by monitoring growth curves, oxygen consumption, ph changes ...