Vitamin K is required for the hepatic production of blood coagulation factors II, VII, IX and X. The term vitamin K refers to a variety of fat-soluble 2-methyl-1, 4-naphthoquinone derivatives. Vitamin K1 (phylloquinone) occurs in green plants, while vitamin K2 (menaquinone) is synthesized by microbial in the gut. The recommended dose of vitamin K in neonates is 1 mg intramuscularly. For infants...

A T THE suggestion of a medical friend the writer decided to investigate the use of viatmin B, in connection with turf culture. This was about a year and a half ago. Extensive investigation of this particular vitamin substance was being carried on at the nearby California Institute of Technology, HO at my friend's request a visit was made to the school and a sample was obtained with which to st...

Several human studies have shown an inverse relation between vitamin A intake (and serum concentrations of retinol and carotene) and cancer. Serum cholesterol concentrations have also been reported in inverse relation to cancer. In a study of 3102 people in Evans County, Georgia, who were followed for over 12-14 years to assess the incidence of cancer there was an inverse association between th...

background: micronutrient deficiency is one of the major public health problems in the middle east affecting economic, political and social development of countries. the three commonest micronutrient deficiencies belong to iron, iodine and vitamin a.  methods: we conducted a systematic review of published english articles in the middle east countries using databases from pubmed, world health or...

as the first case, a baby red eared slider turtle, trachemys scripta elegans, 1.77 inches long, with a 4 month history of anorexia and blind eyes was referred to the aquatic animal clinic, school of veterinary medicine, shiraz university, iran. the eyes of the pet were swollen and he was not active in swimming and feeling around. in the clinic, after stress treatment, he was kept in a clean aqu...

background micronutrient deficiency in tanzania is a significant public health problem, with vitamin a deficiency (vad) affecting 34% of children aged 6 to 59 months. since 2007, development partners have worked closely to advocate for the inclusion of twice-yearly vitamin a supplementation and deworming (vasd) activities with budgets at the subnational level, where funding and implementation o...

two independent experiments were conducted with broilers to determine the effect of threonine and vitamin a on immune system. in first experiment, dietary treatments contained 0.8%, 0.87%, 0.94 % and 1.01 % total threonine. in second experiment, diets were as follows: basal diet without vitamin a; basal diet plus 1500 iu/kg vitamin a; basal diet plus 6250 iu/kg vitamin a; basal diet plus 11000 ...

It is now well established that carotene is a precursor of vitamin A, and its transformation into the vitamin is a function of the animal organism. During studies of the mechanism of this change, attention has been focused mainly on the liver, the storehouse of vitamin A in the animal body, and at least one investigator has claimed that the change takes place in the liver through the action of ...

We investigated the effects of dietary supplementation of zinc (Zn) with or without vitamin A (Vit. A), to elucidate any cross activity between the two micronutrients, on memory and nerve growth factor (NGF) production in ddY male mice depleted for the two elements. After 3 mo-feeding with a Zn and Vit. A deficient (VAD) diet, mice were divided into three groups and replenished with normal Zn w...