ACTIVITY OF CRYSTALLINE VITAMIN B12 FOR CHICK GROWTH
نویسندگان
چکیده
منابع مشابه
Relation of dietary folic acid and vitamin B12 to enzyme activity in the chick.
The relationship of folic acid (PGA) to certain enzyme systems has recently been the subject of investigation by workers in several laboratories. In 1948 Kalckar and Klenow (l-3) demonstrated the inhibitory effect of folic acid upon milk xanthopterin oxidase in vitro. Subsequently Keith et al. (4), studying the effect of dietary PGA upon enzymes, observed that activity of xanthine oxidase in ch...
متن کاملVitamin B12 and hemoglobin regeneration in the chick.
At the time that the isolation of crystalline vitamin B,z was announced (l), it was reported that this vitamin was extremely effective in the treatment of Addisonian pernicious anemia (2). These and other reports (3, 4) indicated that, in the human, vitamin Blz apparently stimulates the bone marrow to produce mature erythrocytes and myeloid leucocytes. In baby pigs, vitamin Blz was found by Neu...
متن کاملOral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency.
BACKGROUND Vitamin B12 deficiency is common, and the incidence increases with age. Most people with vitamin B12 deficiency are treated in primary care with intramuscular (IM) vitamin B12. Doctors may not be prescribing oral vitamin B12 formulations because they may be unaware of this option or have concerns regarding its effectiveness. OBJECTIVES To assess the effects of oral vitamin B12 vers...
متن کاملErythrocyte Vitamin B12 Activity in Health, Polycythemia, and in Deficiency of Vitamin B12 and Folate
T HERE HAS BEEN RELATIVELY LITTLE WORK on the estimation of erythrocyte vitamin B12 activity in man, and consequently there are few reports of its activity in disease states. Sobotka et al.1 reported low levels in four cases of pernicious anemia ( P. A. ) , using E. gracilis and 0. maihamensis. This was confirmed by Biggs et al.,2 who also reported the levels found in treated cases of polycythe...
متن کاملErythrocyte vitamin B12 activity in health, polycythemia, and in deficiency of vitamin B12 and folate.
T HERE HAS BEEN RELATIVELY LITTLE WORK on the estimation of erythrocyte vitamin B12 activity in man, and consequently there are few reports of its activity in disease states. Sobotka et al.1 reported low levels in four cases of pernicious anemia ( P. A. ) , using E. gracilis and 0. maihamensis. This was confirmed by Biggs et al.,2 who also reported the levels found in treated cases of polycythe...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1948
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)57316-6