منابع مشابه
Folate and Vitamin B
Forty-one patients with oral lesions and symptoms were enrolled in the study. Their ages ranged from 16 to 79 years with a mean age of 48.5 years. They were divided into two groups. Group I consisted of 25 patients with oral lichen planus and group II consisted of 16 patients with stomatitis or glossitis. Their complete blood counts, hemoglobin typing, serum and red cell folate, and serum vitam...
متن کاملThe Vitamin B Complex
died) ; and that Michael made excellent attempts to isolate the antiscorbutic principle early in the eighteenth century. Further, Lunin (1881) clearly recognized that small quantities of unknown substances were essential to life, and Pekelharing (1905) demonstrated the existence of diseases due to dietary deficiency. Yet it was Hopkins (1912) who first realized the full significance of vitamins...
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 کاملVitamin B Antagonists
V ITAMIN B11 is a catalyst of considerable biological imimportance. Studies during time past 15 years have estai)lished a key role for thus vitanlin in protein and amiiino aci(1 mmletabohismll and, sommiewhat less firmly, in fat imletai)ohism. It would seemil, therefore, timat suitable antagonists to thus vitaillmn mllighmt be of timerapeutic inml)ortance. We are actually ill a utmost curious s...
متن کاملThe Nitrilosides(Vitamin B-17)
Vitamin B-17 (nitriloside) is a designation proposed to include a large group of water-soluble, essentially non-toxic, sugary, compounds found in over 800 plants, many of which are edible. These factors are collectively known as Beta-cyanophoric glycosides. They comprise molecules made of sugar, hydrogen cyanide, a benzene ring or an acetone. Though the intact molecule is for all practical purp...
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ژورنال
عنوان ژورنال: Nature
سال: 1929
ISSN: 0028-0836,1476-4687
DOI: 10.1038/124411a0