Protective effects of vitamin C against brain ischemia

Orally administrated ascorbic acid suppresses neuronal damage and modifies expression of SVCT2 and GLUT1 in the brain of diabetic rats with cerebral ischemia-reperfusion

This study investigated the effects of oral supplementation of vitamin C on cerebral injury. The daily intake of vitamin C attenuates brain ischemia (insufficient supply of blood to the brain) in diabetic rats. These results suggested that vitamin C supplementation may protect against ischemia in the diabetic state. Further details can be found in the study.
As in coronary artery disease, the underlying disease process for cerebrovascular disease –the narrowing of the arteries that supply blood to the brain – is arteriosclerosis. Here too, the process starts with a weakening of the blood vessel walls, most frequently caused by an insufficient dietary intake of vitamins and other micronutrients. This leads to an underproduction of collagen and other reinforcement molecules in the artery walls and to the initiation of a repair process to compensate for the growing instability of these walls. The arteriosclerotic plaques that – with time – narrow the blood flow in the neck (carotid) arteries or brain (cerebral) arteries is essentially an overshooting repair process for the vitamin-deficient artery wall. A stroke occurs when the already narrowed arteries are clogged and the supply of oxygen and nutrients to billions of brain cells is interrupted, causing permanent damage.
Naohiro Iwata, Mari Okazaki, Meiyan Xuan,Shinya Kamiuchi, Hirokazu Matsuzaki, Yasuhide Hibino. Orally Administrated Ascorbic Acid Suppresses Neuronal Damage and Modifies Expression of SVCT2 and GLUT1 in the Brain of Diabetic Rats with Cerebral Ischemia-Reperfusion. Nutrients. 2014 Apr; 6(4): 1554–1577.

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