homocysteine

noun
ho·​mo·​cys·​te·​ine | \ˌhō-mō-ˈsi-stə-ˌēn, ˌhä- \

Definition of homocysteine 

: an amino acid C4H9NO2S that is produced in animal metabolism by the demethylation of methionine and that appears to be associated with an increased risk of cardiovascular disease when occurring at high levels in the blood

Examples of homocysteine in a Sentence

Recent Examples on the Web

Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, CNN, "Enthusiasm over vitamins often outpaces evidence, experts say," 13 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, chicagotribune.com, "Older Americans are hooked on vitamins despite scarce evidence they work," 6 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, CNN, "Enthusiasm over vitamins often outpaces evidence, experts say," 13 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, chicagotribune.com, "Older Americans are hooked on vitamins despite scarce evidence they work," 6 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, CNN, "Enthusiasm over vitamins often outpaces evidence, experts say," 13 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, chicagotribune.com, "Older Americans are hooked on vitamins despite scarce evidence they work," 6 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, chicagotribune.com, "Older Americans are hooked on vitamins despite scarce evidence they work," 6 Apr. 2018 Because folic acid can lower homocysteine levels, researchers once hoped that folic acid supplements would prevent heart attacks and strokes. Liz Szabo, USA TODAY, "Are you over 65 and take vitamins? They don't usually help — and sometimes they harm," 4 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'homocysteine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of homocysteine

1932, in the meaning defined above

History and Etymology for homocysteine

International Scientific Vocabulary hom- + cysteine

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The first known use of homocysteine was in 1932

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More Definitions for homocysteine

homocysteine

noun
ho·​mo·​cys·​te·​ine | \ˌhō-mō-ˈsis-tə-ˌēn, ˌhäm-ō- \

Medical Definition of homocysteine 

: an amino acid C4H9NO2S that is produced in animal metabolism by the demethylation of methionine and forms a complex with serine that breaks up to produce cysteine and homoserine and that appears to be associated with an increased risk of cardiovascular disease when occurring at high levels in the blood

More from Merriam-Webster on homocysteine

Britannica.com: Encyclopedia article about homocysteine

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