Comparison of Vitamin K Activities of Vitamin K1 and Klotogen (Menadione Sodium Bisulfite Complex)
نویسندگان
چکیده
منابع مشابه
Dietary vitamin K1 requirement and comparison of biopotency of different vitamin K sources for young turkeys.
In a preliminary experiment, the inclusion of vitamin K1 (K1) at a dietary level of 0.1 mg/kg was as effective as 1 or 2 mg/kg in reducing plasma prothrombin time (PT). To obtain an estimate of the dietary K1 requirement and to compare the biopotency of different vitamin K sources for poults, three additional experiments were conducted. In Experiment 1, an incomplete factorial arrangement of tr...
متن کاملVitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7.
Vitamin K is a cofactor in the production of blood coagulation factors (in the liver), osteocalcin (in bone), and matrix Gla protein (cartilage and vessel wall). Accumulating evidence suggests that for optimal bone and vascular health, relatively high intakes of vitamin K are required. The synthetic short-chain vitamin K(1) is commonly used in food supplements, but recently the natural long-cha...
متن کاملMenadione is a metabolite of oral vitamin K.
Phylloquinone is converted into menaquinone-4 and accumulates in extrahepatic tissues. Neither the route nor the function of the conversion is known. One possible metabolic route might be the release of menadione from phylloquinone by catabolic activity. In the present study we explored the presence of menadione in urine and the effect of vitamin K intake on its excretion. Menadione in urine wa...
متن کاملHEMOSTASIS, THROMBOSIS, AND VASCULAR BIOLOGY Vitamin K–containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7
Vitamin K is a cofactor in the production of blood coagulation factors (in the liver), osteocalcin (in bone), and matrix Gla protein (cartilage and vessel wall). Accumulating evidence suggests that for optimal bone and vascular health, relatively high intakes of vitamin K are required. The synthetic short-chain vitamin K1 is commonly used in food supplements, but recently the natural long-chain...
متن کاملMenadione (vitamin K3) is a catabolic product of oral phylloquinone (vitamin K1) in the intestine and a circulating precursor of tissue menaquinone-4 (vitamin K2) in rats.
Mice have the ability to convert dietary phylloquinone (vitamin K1) into menaquinone-4 (vitamin K2) and store the latter in tissues. A prenyltransferase enzyme, UbiA prenyltransferase domain-containing 1 (UBIAD1), is involved in this conversion. There is evidence that UBIAD1 has a weak side chain cleavage activity for phylloquinone but a strong prenylation activity for menadione (vitamin K3), w...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1957
ISSN: 0032-5791
DOI: 10.3382/ps.0360633