Results 241 to 250 of about 785,135 (271)
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1998
The discovery of vitamin K can be largely attributed to the Danish scientist Henrik Dam, whose work on sterol metabolism in chicks required the feeding of carefully controlled diets, some of which were depleted in lipids (Dam, 1929). This often caused internal hemorrhages and other symptoms similar to scurvy, but which Dam showed to be incurable by ...
P, Newman, M J, Shearer
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The discovery of vitamin K can be largely attributed to the Danish scientist Henrik Dam, whose work on sterol metabolism in chicks required the feeding of carefully controlled diets, some of which were depleted in lipids (Dam, 1929). This often caused internal hemorrhages and other symptoms similar to scurvy, but which Dam showed to be incurable by ...
P, Newman, M J, Shearer
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VITAMIN K AND VITAMIN K-DEPENDENT PROTEINS
British Journal of Haematology, 1990The more recent introduction of techniques to assess vitamin K status is also leading to a deeper understanding of the nutritional and clinical role of vitamin K. Progress has been particularly rapid in the last decade and is the purpose of this annotation to review the advances in different ...
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Pediatrics, 1985
To the Editor.— The article by Payne and Hasegawa1 on vitamin K deficiency of the newborn correctly stresses the existence of differences between vitamin K deficiency and Coumadin effect. This has been somewhat forgotten in important studies on the mode of action of prothrombin.2-4 Modern techniques as the Echis time5 and certain ...
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To the Editor.— The article by Payne and Hasegawa1 on vitamin K deficiency of the newborn correctly stresses the existence of differences between vitamin K deficiency and Coumadin effect. This has been somewhat forgotten in important studies on the mode of action of prothrombin.2-4 Modern techniques as the Echis time5 and certain ...
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Vitamin K and Vitamin K Antagonists
2020Vitamin Κ was discovered by Henrik Dam in 1929 in studies of sterol metabolism in chicks fed fat-free diets (1). The antihemorrhagic fat-soluble agent was called vitamin Κ, Κ being short for "Koagulation" (the German word for coagulation). Since then there have been two major eras of extensive research on this vitamin.
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Vitamin K-Dependent Carboxylase
Annual Review of Biochemistry, 1985Vitamin K is an essential cofactor for a microsomal carboxylase that converts glutamyl residues in endogenous precursor proteins to y-carboxyglutamyl residues in completed proteins. The same microsomal preparations convert vitamin K to its 2,3-epoxide, and it has been suggested that these two reactions (carboxylation and epoxidation) are coupled ...
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Nihon rinsho. Japanese journal of clinical medicine, 1993
In this paper, highly sensitive methods for measuring of vitamin K in serum, feces and milk are described. Vitamin K1 and the menaquinone family from the serum, feces and milk were separated by high performance liquid chromatography. The separated K1 and menaquinone families were detected by a fluorescence spectrophotometer after their reduction with ...
K, Komatsu +3 more
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In this paper, highly sensitive methods for measuring of vitamin K in serum, feces and milk are described. Vitamin K1 and the menaquinone family from the serum, feces and milk were separated by high performance liquid chromatography. The separated K1 and menaquinone families were detected by a fluorescence spectrophotometer after their reduction with ...
K, Komatsu +3 more
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2018
Vitamin K is the fourth of the lipid-soluble vitamins and like the other three is of isoprenoid biosynthetic origin. In this case a redox active bicyclic naphthoquinone nucleus is tethered to the long hydrophobic tail. In plants that produce the phylloquinone form of K, it serves as a mobile carrier in a one electron transfer role in photosystem I of ...
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Vitamin K is the fourth of the lipid-soluble vitamins and like the other three is of isoprenoid biosynthetic origin. In this case a redox active bicyclic naphthoquinone nucleus is tethered to the long hydrophobic tail. In plants that produce the phylloquinone form of K, it serves as a mobile carrier in a one electron transfer role in photosystem I of ...
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