Vitamin C (ascorbic acid) is an important antioxidant and there is a wide spread supplementation of diets with vitamin C among the general population in the form of tablets or powder. Vitamin C is also present in multi-vitamin tablets along with Zn and other transitional metal ions. Recent reports, however, have suggested that vitamin C exhibits pro-oxidant properties and in vitro it can produc...

Oxalosis, or calcium oxalate deposition in the tissues, may develop in patients with inherited disorders of oxalate metabolism or can occur secondary to other diseases. In this study, a case of renal oxalosis probably secondary to excessive parenteral vitamin C administration in a patient with acute post-traumatic oliguric renal failure is reported. Oxalate deposits 1 Received December 7. 1995....

Two experiments were conducted, involving 68 third-litter sows and 20 first-litter gilts in Exp. 1 and 82 first-litter gilts in Exp. 2. On d 108 of gestation, the dams were moved into individual crates, stratified by parity and breed, and randomly assigned within strata, to one of two treatments: (1) fed a basal 16% protein corn-soybean meal diet, 1.8 and 2.7 kg once daily before farrowing and ...

vitamin d is important for the development, growth, and mineralization of the skeletal in neonates and children. vitamin d is essential for intestinal absorption of calcium. vitamin d is metabolized to 25-hydroxyvitamin d and then to 1,25-dihydroxyvitamin d. pregnant women in developed countries often have insufficient serum concentrations of 25-hydroxyvitamin d and a supplementation of vitamin...

With the exceptions of folate for prevention of birth defects and calcium for prevention of bone disease, currently there is no evidence of benefit from vitamin or mineral supplementation in diabetic patients without underlying deficiencies. Given the recent revelations about antioxidant vitamins, it is prudent to refrain from using vitamin E, vitamin C, or vitamin A in excess of the Dietary Re...

AIMS Vitamin C (ascorbic acid) is a powerful antioxidant but there is limited information on its ability to prevent LDL oxidation and its interaction with other natural antioxidants in vivo. We assessed the effect of 4 weeks pharmacological supplementation with vitamin C 1 g day(-1) on copper induced LDL oxidation and lipid peroxidation. METHODS Blood samples were obtained at baseline and at ...

In animal models and human cross-sectional studies, vitamin D deficiency has been associated with liver disease progression. Vitamin D supplementation has been suggested as a treatment to prevent disease progression. We sought to evaluate the role of vitamin D levels in predicting chronic liver disease development. We conducted a nested case-control study of vitamin D levels in subjects with (c...

OBJECTIVES Bronchial asthma is a chronic inflammatory airways disease. Nutritional intervention is an important tool to decrease the severity of many chronic inflammatory diseases including asthma. The aim of this study is to evaluate the role of omega-3 fatty acids, vitamin C and Zn in children with moderately persistent asthma. PATIENTS AND METHODS Randomly assigned, placebo-self-controlled...

Objective Different studies have demonstrated that regular exercise can induce changes in the lipid profile, but results remain inconclusive. Available data suggest that correction of vitamin D deficiency can improve the lipid profile. In this study, we have hypothesized that Nordic Walking training will improve lipid profile in elderly women supplemented with vitamin D. Methods A total of 10...