vitamin K

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vitamin K

[′vīd·ə·mən ¦kā]
(biochemistry)
Any of three yellowish oils which are fat-soluble, nonsteroid, and nonsaponifiable; it is essential for formation of prothrombin. Also known as antihemorrhagic vitamin; prothrombin factor.
References in periodicals archive ?
24,25) The vitamin K2 (MK4) was added because of spontaneous bleeding from low platelets and the reported benefit to myelodysplastic syndromes and leukemias.
While fermented cheeses are the best dietary source of menaquinones in the West, most will not be able to consume enough to obtain optimal amounts of vitamin K2, nor is cheese a practical source for extracting the menaquinones," added Dr.
Vitamin K2 activates osteocalcin, which collects calcium from the bloodstream and affixes it to the bone matrix.
It has been shown that vitamin K2 treatment rapidly decreases serum ucOC ([26]), and has a preventive effect on vertebral fractures ([27]).
Prior to this study, only two other one-year studies were done on vitamin K2 MK-7 (4).
UniK2 provides Vitamin K2 as mcnaquinone-7 (MK-7), the most bioavailable and bioactive form of vitamin K.
18 November 2011 - Norwegian biotechnology company Nattopharma ASA (OSL:NATTO) announced today a supply and cooperation deal for its natural vitamin K2 product MenaQ7 with Swedish nutrition products company Indevex Biotech AB.
In one study, published March 24 in the online edition of the American Journal of Clinical Nutrition (AJCN), researchers found that the highest intakes of vitamin K2 were associated with a 30 percent lower risk of cancer mortality, as well as a reduced risk of developing any cancer.
In general, the researchers found, the one quarter with the highest intakes of vitamin K2 were 28% less likely to have died of any one of the cancers than the one-quarter of men and women with the lowest intakes of the vitamin.
The company has verified that menaquinone-7 (MK-7), a kind of vitamin K2 derived from natto, has a higher nutritional value than menquinone-4 (MK-4), which is commonly used as a food additive.
But many popular substances, such as selenium yeast, tin, manganese and vitamin K2, have been omitted and are subject to 505 separate appeals.