PMID- 21388339 OWN - NLM STAT- MEDLINE DCOM- 20110727 LR - 20220409 IS - 1437-4331 (Electronic) IS - 1434-6621 (Linking) VI - 49 IP - 3 DP - 2011 Mar TI - Homocysteine: a biomarker in neurodegenerative diseases. PG - 435-41 LID - 10.1515/CCLM.2011.084 [doi] AB - Diseases of the central nervous system are found in patients with severe hyperhomocysteinemia (HHcy). Epidemiological studies show a positive, dose-dependent relationship between mild-to-moderate increases in plasma total homocysteine concentrations (Hcy) and the risk of neurodegenerative diseases, such as Alzheimer's disease, vascular dementia, cognitive impairment or stroke. HHcy is a surrogate marker for B vitamin deficiency (folate, B12, B6) and a neurotoxic agent. The concept of improving the patient's clinical outcome by lowering of Hcy with B vitamins seems to be attractive. Recent B vitamin supplementation trials demonstrated a slowing of brain atrophy and improvement in some domains of cognitive function. Meta-analysis of secondary prevention trials showed that B vitamins supplementation caused a decrease in plasma Hcy and a trend for lowering the risk of stroke. HHcy is common in elderly people. Therefore, it seems prudent to identify B vitamin deficient subjects and to ensure sufficient vitamin intake. Therefore, recent evidence supports the role of Hcy as a potential biomarker in age-related neurodegenerative diseases. FAU - Herrmann, Wolfgang AU - Herrmann W AD - Department of Clinical Chemistry, Medical School, Saarland University, Homburg, Germany. kchwher@uks.eu FAU - Obeid, Rima AU - Obeid R LA - eng PT - Journal Article PL - Germany TA - Clin Chem Lab Med JT - Clinical chemistry and laboratory medicine JID - 9806306 RN - 0 (Biomarkers) RN - 0LVT1QZ0BA (Homocysteine) SB - IM MH - Biomarkers/blood MH - Homocysteine/*blood MH - Humans MH - Neurodegenerative Diseases/*blood MH - Vitamin B 12 Deficiency/blood EDAT- 2011/03/11 06:00 MHDA- 2011/07/28 06:00 CRDT- 2011/03/11 06:00 PHST- 2011/03/11 06:00 [entrez] PHST- 2011/03/11 06:00 [pubmed] PHST- 2011/07/28 06:00 [medline] AID - 10.1515/CCLM.2011.084 [doi] PST - ppublish SO - Clin Chem Lab Med. 2011 Mar;49(3):435-41. doi: 10.1515/CCLM.2011.084.