BACKGROUND The association between dietary vitamin C intake and breast cancer survival is inconsistent and few studies have specifically examined vitamin C supplement use among women with breast cancer. The purpose of this study was to summarise results from prospective studies on the association between vitamin C supplement use and dietary vitamin C intake and breast cancer-specific mortality ...

OBJECTIVE: Streptozotocin (STZ) destroys the beta cells of pancreas by generation of reactive oxygen species and vitamin C has documented antioxidant properties. This study was designed to evaluate the preventive effect of supplementation of diet by vitamin C on induction of STZ-diabetes and its effect on carbohydrate and lipid metabolism of diabetic rats. MATERIALS AND METHODS: Fifty male Wis...

background: bisphenol a (bpa), an environmental pollutant, can generate free radicals which damages the reproductive system. vitamin c is an antioxidant which may prevent the adverse effects of free radicals.objective: the aim was to investigate the effect of vitamin c on the ovary tissue in rats treated with bpa.materials and methods: in this experimental study, 24 female wistar rats (200±20 g...

background: this study attempted to determine the effects of long-term use of vitamin c on vascular endothelial function. materials and methods: during a pilot clinical trial study conducted at imam hussein hospital (isfahan) in 2014-2015, a total of 40 diabetic patients were selected and then assigned randomly into two 20-subject groups receiving vitamin c and placebo tablets. the patients wer...

A 3×2 factorial experiment was conducted to evaluate the effects of dietary vitamin C, E and Zinc supplementation on growth, survival and reproduction of Oreochromis niloticus in hapa based system installed in earthern ponds for 5 months. The triplicate groups consisting 30 fish were fed three levels of vitamin C (0, 50 and 1250 mg kg diet), two levels of vitamin E (0, 600 mg kg diet). An addit...

Mild-to-moderate vitamin C depletion in weanling guinea-pigs affects pyridinoline:deoxypyridinoline (collagen cross-link) ratios in femur shaft and urine, attributed to impairment of hydroxylation of collagen lysine. We investigated: (1). whether the picture at two time points is compatible with progressive accumulation of abnormal collagen; (2). whether any changes are seen in skin, where litt...

The present study was conducted to determine malondialdehyde (MDA) as index of free radical induced lipid peroxidation and some antioxidant e.g. Albumin, Uric acid, vitamin E and Vitamin C in 40 patients with chronic renal failure and 40 subjects as control group. Serum MDA, Urea, Creatinine, Total protein, Serum iron, Albumin, Uric acid, Vitamin E and Vitamin C were measured in both patients a...

background chronic inflammation is the most important cause of cardiovascular disease in patients undergoing hemodialysis, and vitamin c as a major antioxidant which could be effective to suppress inflammation. objectives this study was performed to evaluate the effect of vitamin c supplementation on c-reactive protein levels in patients undergoing hemodialysis. patients and methods this random...

A study was conducted to determine the effects of packaging materials, seasonality, storage temperature and time on physiochemical and antioxidant properties of roselle-mango juice blends. Roselle extract (20%, 40%, 60%, and 80%) was mixed with mango juice and stored in glass and plastic bottles at 4°C and 28°C. Total soluble solids, pH, titratable acidity, reducing sugar, color, vitamin C, tot...