A possible role for vitamin C in age-related cataract

Proceedings of the Nutrition Society

Jolieke C. van der Pols¹ 

关键词: Vitamin C;    Cataract;    Antioxidants;    Old age;   

DOI  :  10.1017/S0029665199001354

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

While many experimental studies have shown a protective effect of vitamin C in age-related cataract, other studies have revealed contrasting roles for this nutrient. Oxidative damage in the lens can be prevented by vitamin C. However, a pro-oxidant effect of vitamin C through H2O2 generation has been suggested. Vitamin C has also been shown to play a role in protein glycation, which is observed in cataract formation. A protective effect of dietary energy restriction appears to be inversely related to plasma vitamin C levels in rodents. Moreover, conclusions from human epidemiological and intervention studies are not uniform. The available evidence suggests that maintenance of sufficient plasma vitamin C is needed to prevent oxidative damage in the lens. More research will be needed in order to confirm the relative importance of the different roles of vitamin C in the eye lens.

【 授权许可】

Unknown