Hemolytic effect of some water-soluble vitamins (niacin B5, pyridoxine B6, thiamine B1 and ascorbic and acid C) on erythrocytes was studied spectrophotometrically at relatively high concentration. The oxidation mechanism of hemoglobin was the same for the used vitamins. Vitamin C was the strongest hemolytic agent in comparison with the other vitamins, while vitamin B1 is the weakest one. The re...

The relationship of vitamin Br to carbohydrate metabolism was one of the earliest functions of a vitamin to be observed. The problem has been more or less continuously investigated up to the present time and the majority of the evidence indicates that in vitamin B1 deficiency there is some interference with glycogen storage, hyperglycemia, and characteristic errors in carbohydrate metabolism. E...

Divalent metal ions were found to trigger the shrinkage of a supramolecular hydrogel based on a peptide dendron, and the shrinkable gel could be further used to control the release of vitamin B1.

We have developed a new method to directly measure the concentration of the particulate and dissolved pools of B-vitamins in seawater. B-vitamins are coenzymes required for life, yet many organisms cannot synthesize these compounds de novo and must scavenge them from the environment. It has been shown that B-vitamins can control the marine microbial community’s structure and activity; however, ...

The relationship of vitamin Br to carbohydrate metabolism was one of the earliest functions of a vitamin to be observed. The problem has been more or less continuously investigated up to the present time and the majority of the evidence indicates that in vitamin B1 deficiency there is some interference with glycogen storage, hyperglycemia, and characteristic errors in carbohydrate metabolism. E...

BACKGROUND Children with Sickle Cell Disease (SCD) may show growth failure in comparison to healthy peers. Many factors as hematological status, endocrine and/or metabolic dysfunction, and nutritional status, may play an important role in growth failure. The aim of this study was to assess whether impaired growth and nutritional intake can affect SCD severity during childhood. METHODS We cond...

1661 vitamin B12 than the control foetuses, showing that vitamin-Bl2 deficiency in the mother may seriously affect the vitamin-B12 stores of the foetus. It seems probable, therefore, that infants born of vitamin-B12-deficient mothers will start life with defective body stores of this vitamin, even though cord blood levels may not be very low. As was to be expected the levels in the breast milk ...

1. The effects of cocaine and of added vitamin B1 on the glucose fermentation of Saccharomyces cerevi8iae at pH 7, previously grown in the presence and in the absence of cocaine, have been compared. There is a difference in behaviour towards added vitamin B1 between the normal yeast and the cocaine-grown yeast. 2. Cocaine in concentration sufficient to arrest growth (0005M) at pH 7 inhibits com...