Homocysteine (Hcy) is an amino acid. It’s a chemical in your blood that helps create proteins. Vitamin B12, vitamin B6 and vitamin B9 (folate) break down homocysteine to generate other chemicals your body needs.

Homocysteine (/ ˌ h oʊ m oʊ ˈ s ɪ s t iː n /; symbol Hcy) is a non-proteinogenic α-amino acid. It is a homologue of the amino acid cysteine, differing by an additional methylene bridge (−CH 2 −). It is biosynthesized from methionine by the removal of its terminal C ε methyl group.

2018年9月18日 · High homocysteine levels, if not treated, can increase your risk for certain health conditions, including osteoporosis, atherosclerosis, and thrombosis. What does it mean to have high...

It measures the amount of homocysteine, an amino acid in the body. The test is often used to diagnose vitamin B6, B9 or B12 deficiency. People with elevated homocysteine may have a higher risk for cardiovascular disease. In newborns, homocysteine testing can help diagnose a rare condition called homocystinuria. What is a homocysteine test?

2025年3月6日 · Homocysteine is an amino acid that the body produces. Most people have low homocysteine levels. This is because the body breaks down the amino acid quickly into other compounds. High, or...

2023年7月29日 · Homocystinuria (HCY) is a rare condition that interferes with your body’s ability to break down a protein from the food you eat. Protein is made of smaller building blocks called amino acids....

Homocysteine (Hcy) is a sulfhydryl-containing amino acid, and intermediate metabolite formed in metabolising methionine (Met) to cysteine (Cys); defective Met metabolism can increase Hcy. The effect of hyperhomocysteinemia (HHcy) on human health, is ...

Hyperhomocysteinemia (HHcy) is a metabolic condition characterized by elevated blood homocysteine (Hcy) levels, which is implicated in various disorders, serving as a potential risk factor for serious complications [1, 2, 3].

Homocysteine (Hcy) is considered to be a common intermediate at the crossing point of two important intracellular metabolic pathways. Hcy participates in the folate cycle with vitamin B 12, providing a one-carbon unit for nucleotide and amino acid metabolism.

Homocysteine (Hcy) is a thiol group containing the amino acid, which naturally occurs in all humans. Hcy is degraded in the body through two metabolic pathways, while a minor part is excreted through kidneys.