alexa Homocysteine and stroke.
Neurology

Neurology

Brain Disorders & Therapy

Author(s): Hankey GJ, Eikelboom JW

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Abstract During the past year epidemiological studies have linked elevated plasma total homocysteine concentrations with an increased risk of ischaemic stroke because of arterial disease. Laboratory studies have further explored the mitogenic effects of total homocysteine on vascular smooth muscle, and cytotoxic and thrombophilic effects on vascular endothelium. Also, a clinical trial has shown that lowering total homocysteine by means of multivitamin therapy decreases the rate of abnormal exercise electrocardiography tests. However, it remains to be determined whether lowering total homocysteine prevents hard clinical outcome events, such as stroke and other serious vascular events. An alternative explanation for the observed association between elevated total homocysteine and stroke is a confounding effect of factors associated with hyperhomocysteinaemia (e.g. cigarette smoking, renal impairment, an atherogenic diet, cystine deficiency, folate deficiency) or perhaps even the acute vascular events themselves, whereby the tissue damage temporarily increases total homocysteine levels. The results of ongoing clinical trials in stroke patients to determine the impact of multivitamin therapy on recurrent stroke and other serious vascular events are awaited.
This article was published in Curr Opin Neurol and referenced in Brain Disorders & Therapy

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