منابع مشابه
The Oral Use of Combined Vitamin B 12
ERS Helen W. Belding, M.D., Winston-Salem. N. C. Conrad Maier, M.D., Zurich, Switzerland Robert B. Chodos, M.D., Fransingham, Mass. Milo Netou ek, M.D., Praha, Czechoslovakia Roger C. Crafts, Ph.D., Cincinrwti Charles E. Rath, M.D., Washington C. R. DasGupta, M.D., Calcutta, India Jean P. Soulier, M.D., Paris, France Solomon Estren, M .D ., New York Ram#{243}nM. Su#{225}rez,M.D., San Juan. Puer...
متن کاملVitamin B-12 and folate deficiency in elderly persons.
In May 2002, the Food Standards Agency in the United Kingdom decided against endorsing the recommendation of the Committee on Medical Aspects of Food and Nutrition Policy that universal folic acid fortification of flour be introduced to prevent neural tube defects, but the agency also indicated a willingness to reconsider the decision in the light of further evidence. In coming to its decision,...
متن کاملThe Vitamin B 12 Coenzyme
INTRODUCTION In 19'58 Barker and his associates l 3 recognized a new coenzyme which controlled the conversion of glutamate into ,8-methylaspartate by Clostridium tetanomorph'im. The coenzyme was shown4 to be related to ",-vitamin B12, i.e. contair ing an adenine nucleotide grouping in place of the 5,6-dimethylbe:nziminalole nucleotide of vitamin B12, although similar coenzymes containing b{ nzi...
متن کاملVitamin B-12.
V itamin B-12 is a cofactor for 2 enzymes. In the cytoplasm, methionine synthase requires vitamin B-12 in the form of methylcobalamin and catalyzes the conversion of homocysteine to methi-onine by transfer of a methyl group from methyltet-rahydrofolate. This enzyme links the methylation pathway through synthesis of the methyl donor S-adenosyl methionine and the pathway in which purine and pyrim...
متن کاملThe total synthesis of vitamin B 12 .
The final stages in the total synthesis of vitamin B12 are reported. It was particularly appropriate, I think, and most pleasant for us this morning to see the splendid film provided by our Russian friends, in which the very successful Symposium at Riga was enshrined for posterity. Appropriate in the sense, from my own point of view, that I did report there at Riga, on the progress we had made ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 1998
ISSN: 0002-9165,1938-3207
DOI: 10.1093/ajcn/67.4.739