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Protective Function of Alpha-Tocopherol against the Process of Cataractogenesis in Humans.
- Source :
-
Annals of Nutrition & Metabolism . 1999, Vol. 43 Issue 5, p286-289. 4p. - Publication Year :
- 1999
-
Abstract
- In a random trial 50 patients with unilateral/bilateral idiopathic immature senile cataract (cortical n = 25, nuclear n = 25) requiring surgery at least in one eye were included in the present study. Reduced glutathione (GSH), vitamin E, malondialdehyde (MDA) and glutathione peroxidase (GSH-Px) were studied in these patients receiving either vitamin E (n = 12 in each subgroup) or placebo (n = 13 in each group) for 30 days. A comparable increase of vitamin E in both types of lens homogenates of cataractous patients was observed in the study group. The level of GSH in cortical cataractous lenses in the study group was significantly raised (p < 0.001) whereas it was not increased significantly in nuclear cataractous lenses (p > 0.05) as compared to the placebo group. The percentage decrease in MDA levels was greater in cortical cataracts (38.07%) than in the nuclear type (27.94%). The activity of GSH-Px in cortical lenses was higher than that in the nuclear cataractous lens. The change in the size of lens opacity in cortical cataractous patients receiving vitamin E therapy was significantly decreased as compared to the placebo group. There may be a direct modulating effect of vitamin E on some GSH-related enzymes and the cortex of the lens might be protected more than the nucleus.Copyright © 2000 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
- Subjects :
- *CATARACT
*PEROXIDATION
*CRYSTALLINE lens diseases
*MALONDIALDEHYDE
Subjects
Details
- Language :
- English
- ISSN :
- 02506807
- Volume :
- 43
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Annals of Nutrition & Metabolism
- Publication Type :
- Academic Journal
- Accession number :
- 11333771
- Full Text :
- https://doi.org/10.1159/000012796