Abstract
Chronic kidney disease (CKD) is one of the most common pathologies worldwide. With CKD, cardiovascular risk increases and mortality rises. The article presents the role of homocysteine as a laboratory marker of renal failure and the development of cardiovascular disease. Homocysteine is a thiol-containing amino acid, which is an intermediate product of methionine metabolism, which is metabolized in two ways: due to the transfer of the sulfate group, which occurs in the presence of vitamin B 6, or remethylation, which occurs in the presence of vitamin B 12 and folic acid. Normally, in an adult, the concentration of total homocysteine in blood plasma does not exceed 15 μmol/L. It has been shown that with CKD, hyperhomocysteinemia is observed at the initial stages and its frequency increases at the pre- and dialysis stages of the disease. Hyperhomocysteinemia provokes endothelial dysfunction, accelerates systemic atherosclerosis, increases the risk of atherothrombotic complications. Evaluation of plasma homocysteine levels may be useful in stratifying nephrocardio- and cerebrovascular risk in CKD.
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