Vitamin B12

被引:10
作者
Wolffenbuttel, Bruce H. R. [1 ]
Owen, P. Julian [2 ]
Ward, Mary [3 ]
Green, Ralph [4 ]
机构
[1] Univ Groningen, Univ Med Ctr Groningen, Groningen, Netherlands
[2] Cambridge Univ Hosp NHS Trust, Dept Trauma & Orthopaed, Addenbrookes, Cambridge, England
[3] Ulster Univ, Nutr Innovat Ctr Food & Hlth, Sch Biomed Sci, Coleraine, North Ireland
[4] Univ Calif Davis, Dept Pathol & Lab Med, Sacramento, CA USA
来源
BMJ-BRITISH MEDICAL JOURNAL | 2023年 / 383卷
关键词
COBALAMIN; DEFICIENCY; DISORDERS; TRANSCOBALAMIN; ASSOCIATIONS; HAPTOCORRIN; GUIDELINES; DIAGNOSIS; PATIENT; RISKS;
D O I
10.1136/bmj-2022-071725
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
What is vitamin B12? Vitamin B12 (cobalamin) is a water soluble vitamin required for several physiological processes, including normal nervous system functioning, and red blood cell development and maturation. It has antioxidant effects, is a co-factor in mitochondrial energy metabolism, and contributes to DNA synthesis, the methylation cycle, and epigenetic regulation.1 2 B12 is present in foods of animal origin, such as meat, eggs, and milk, or via food fortification. Healthy adults require an average intake of 4-7 mcg daily to maintain B12 status.3 4 Indications for B12 treatment, administration routes, and preparations Treatment with B12 may be required for a variety of reasons (table 1). © 2023 BMJ Publishing Group. All rights reserved.
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页数:8
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