In the present study, ascorbic acid weakly inhibited the multiplication of viruses of three different families: herpes simplex virus type 1 (HSV-1), influenza virus type A and poliovirus type 1. Dehydroascorbic acid, an oxidized form of ascorbic acid and hence without reducing ability, showed much stronger antiviral activity than ascorbic acid, indicating that the antiviral activity of ascorbic...

Studies were conducted to evaluate the blood levels of ascorbic acid, dehydroascorbic acid, glutathione, and histamine in patients with gastric carcinoma, tuberculous enteritis and non-specific ulcerative colitis. Leucocyte ascorbic acid, urinary excretion of total ascorbic acid and ascorbic acid saturation test were also carried out in order to assess the ascorbic acid status of these patients...

1 لوئسم هدنسیون : ناریا ،نارهت ،نارهت هاگشناد ،یمیش یسدنهم هدکشناد ،يژولونکتویب هورگ ،رایشناد . یکینورتکلا تسپ : [email protected] 2 ناریا ،يراس ،ناردنزام تاقیقحت و مولع یملاسا دازآ هاگشناد ،ییاذغ عیانص و مولع هدکشناد ،دشرا سانشراک . 3 ناریا ،نارهت ،نارهت هاگشناد ،یمیش یسدنهم هدکشناد ،يژولونکتویب هورگ ،دشرا سانشراک . 4 و مولع یملاسا دازآ هاگشناد ،یمیش هدکشناد ،رایداتسا ناریا ،يراس ،نار...

Huntington's disease has been associated with a failure in energy metabolism and oxidative damage. Ascorbic acid is a powerful antioxidant highly concentrated in the brain where it acts as a messenger, modulating neuronal metabolism. Using an electrophysiological approach in R6/2 HD slices, we observe an abnormal ascorbic acid flux from astrocytes to neurons, which is responsible for alteration...

objective oxygen intoxication plays an important role in the pathogenesis of some fetal diseases such as encephalopathy, ischemia& hypoxia. antioxidants can reduce oxidative damage in newborns. the object of this research was measuring total value of antioxidant and vitamin c in blood sample of pregnant women before delivery, and also in umbilical cord blood of their newborn, and repeating thes...

the ameliorative activity of aqueous extract of the flesh of dates (phoenix dactylifera l.) and ascorbic acid on thioacetamide-induced hepatotoxicity was studied in rats. sixty male rats were divided into six equal groups of 10. two groups were controls, one treated with thioacetamide and one with only distilled water. two groups received extract of flesh phoenix dactylifera and intraperitoneal...

a new and simple method followed by atomic absorption spectrometry has been developedfor indirect determination of ascorbic acid (aa). the proposed method was based on the oxidationof aa to dehydroascorbic acid with cu2+cation(200mgl-1)in an ammonium thiocyanatesolution atph2.4. aa reduces cu2+to cu+followed by the precipitation of cu+ with scn-. then, the excess ofcu2+in the solution was measu...

BACKGROUND Reactive oxygen species generated by ultraviolet light result in photocarcinogenic and photoaging changes in the skin. Antioxidants protect skin from these insults. OBJECTIVE This study defines formulation characteristics for delivering L-ascorbic acid into the skin to supplement the skin's natural antioxidant reservoir. METHODS L-ascorbic acid or its derivatives were applied to ...

Studies in animal models suggest that ascorbic deficiency impairs T-cell-mediated immunity. We studied five normal volunteers hospitalized on a metabolic unit and consuming a strictly controlled diet deficient in ascorbic acid I) after a 5-wk control period of ascorbic acid supplementation (75 mg/day) and 2) after a 9-wk period of no supplementation. Three of the subjects were restudied after a...