[Hyperhomocysteinemia and endothelial dysfunction in patients with cerebral vascular and autoimmune diseases].

Endothelial dysfunction today is recognized as one of the leading factors in the pathogenesis of diseases of the central nervous system of various etiologies. Numerous studies have shown the role of hyperhomocysteinemia in the development of endothelial dysfunction and prothrombogenic state. The most important condition in the development of multiple sclerosis (MS) is dysregulation of the blood-brain barrier (BBB) and transendothelial leukocyte migration. It has been proven that homocysteine also contributes to the damage of neurons by the mechanism of excitotoxicity and induction of apoptosis of neurons. These processes can be one of the factors of neurodegenerative brain damage, which plays a leading role in the progression of MS. This review describes the pleiotropic effect of homocysteine on these processes and its role in the pathogenesis of MS.