homocysteine


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Related to homocysteine: homocysteine test, Methylmalonic acid, C reactive protein

ho·mo·cys·te·ine

 (hō′mə-sĭs′tə-ēn′, -ĭn, -tē-)
n.
An amino acid, C4H9NO2S, not found in proteins, that is used by the body in cellular metabolism. Elevated concentrations in the blood are associated with an increased risk of heart disease.

[homo-, homologous with (from homologous) + cysteine.]

homocysteine

(ˌhəʊməʊˈsɪstiːn)
n
(Chemistry) an amino acid occurring as an intermediate in the metabolism of methionine. Elevated levels in the blood may indicate increased risk of cardiovascular disease
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References in periodicals archive ?
Comment: High plasma homocysteine levels have been associated with depression.
The novel MaxDiscovery Homocysteine Enzymatic Assay Kit employs simplified endpoint analysis to offer high sensitivity and low detection limits.
No one disputes that homocysteine is toxic to our inner arterial lining.
More limited evidence suggests that exposure to Pb may increase plasma homocysteine concentration.
Vitamin B12 is an essential cofactor in homocysteinemeta bolisem to methionine and vitamin B6 by cystathionine 6 synthase converts homocysteine to cystathionine [10].
Increased plasma homocysteine concentrations produce deleterious effects via several mechanisms (1).
Plasma total homocysteine status of vegetarians compared with omnivores: a systematic review and meta-analysis.
It was found that homocysteine levels did not correlate with the risk of adenoma development in the total population; however, when a subgroup analysis by gender was done, it was found that a higher plasma homocysteine concentration significantly increased the risk for adenoma formation in the female cohort.
Those with high homocysteine levels were found to be 60% more likely to suffer from depression.
Now, some scientists think that excess homocysteine may also be a factor in poor mental health and that nearly one in six cases of depression in the elderly could be avoided by using aspirin to lower levels in the blood.