BACKGROUND US adults have access to multiple sources of folic acid. The contribution of these sources to usual intakes above the tolerable upper intake level (UL) (1000 microg/d) and to folate and vitamin B-12 status is unknown. OBJECTIVE The objective was to estimate usual folic acid intake above the UL and adjusted serum and red blood cell folate, vitamin B-12, methylmalonic acid, and homoc...

The studies of many investigators have led to a unified concept of the megaloblastic anemias as a single morphologic entity due to defective nucleoprotein synthesis from various causes. The vast majority of patients with megaloblastic anemia have been found to have deficiency of vitamin B12, of folic acid, or of both vitamins. For this reason, the possible interrelations of these two vitamins h...

L-tyrosine, B6 and folic acid are involved in biosynthesis of DOPA and consequently dopamine. The aim of this study was to investigate the antiparkinsonian effect of these agents in perphenazine-induced catatonia in rats. Murprogo method or scored muscular rigidity, which is induced by a phenothiazine, was used to evaluate the antiparkinsonian effect of these agents. A significant decrease in m...

I . Fifty-two pregnant women in a village were divided into three groups, A, B and C , and were given the following supplements: A, iron in the form of zoo mg ferrous sulphate daily; B, Fe (as group A) and 5 mg of folic acid daily; C , Fe and folic acid (as group B) plus an antimalarial drug. 2. Blood samples were collected each week and assessed for haemoglobin and haematocrit values. 3. Dieta...

Folic acid contents of plasma, whole blood, liver and spleen in Rauscher leukemic mice were estimated. Plasma and liver folate in the leukemic mice was lower than that of normal mice, suggesting that folic acid was deficient in Rauscher leukemia. Folic acid contents in whole blood and spleen were even higher in the leukemic mice than those in normal mice. Clearance study by injecting folic acid...

A high incidence of subnormal serum folic acid levels was observed in 48 patients receiving anticonvulsants (75 %). In peripheral blood, macrocytosis was detected in 46 % and an increase of hypersegmented neutrophils was also seen in 24 % of the patients. Correlation existed between these signs and low serum folate levels. The growth response of Lactobacillus casei and L. leichmannii was not su...