B-Group Vitamins: Chemoprevention?

Urinary excretion of B-group vitamins reflects the nutritional status of B-group vitamins in rats

We have reported previously that the urinary excretion of B-group vitamins reflects recent dietary intakes of these vitamins. We also proposed reference values for the urinary levels of B-group vitamins for human subjects, and used these for evaluating human nutritional status. However, the question arises as to whether the urinary excretion of B-group vitamins in animals or human subjects decr...

Replacement of Vitamins of the B-group by Amino Acids

rats. Since lathyrus peas are grown extensively as a forage crop, this problem is important also in animal husbandry. It is evident that the nutrition of the peoples of other continents than our own will become a matter of increasing concern to us in the years ahead. For this reason, it is desirable to understand the nut,ritive value of many foods not commonly used in America. The problems of l...

Method for Evaluation of the Requirements of B-group Vitamins Using Tryptophan Metabolites in Human Urine

Tryptophan metabolism is directly involved with B-group vitamins such as vitamin B2, niacin, and vitamin B6, and indirectly with vitamin B1 and pantothenic acid. We evaluated the validity of requirements of B-group vitamins set by the Dietary Reference Intakes for the Japanese (DRI-J). We investigated the fate of dietary tryptophan in 10 Japanese adult men who ate the same diet based on DRI-J d...

Study on relationships among deep vein thrombosis, homocysteine & related B group vitamins

OBJECTIVES Hyperhomocysteinemia has been considered as a potential risk factor for deep venous thrombosis (DVT) but it is still controversy. We aimed to evaluate the prevalence of hyperhomocysteinemia in patients with DVT. Our second objective was to document the prevalence of folate, Vitamin B6, and Vitamin B12 level in this patient population. METHODS Sixty patients with DVT aged from 23 to...

Role of B Vitamins in Biological Methylation