Plasma lipoproteins as carriers of phylloquinone (vitamin K1) in humans
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چکیده
منابع مشابه
Phylloquinone (vitamin K1) content of vegetables
Assessment of vitamin K (VK) dietary intakes has been limited by incomplete VK food composition data for the US food supply. The phylloquinone (VK-1 or vitamin K1) concentrations of a variety of geographically representative vegetables (n 1⁄4 218) were determined by reversed-phase high performance liquid chromatography with fluorescent detection. Green leafy and flower vegetables including broc...
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Plasma concentrations of vitamin K1 were similar in 37 patients with cystic fibrosis (median 46 ng/l) and 16 controls (49 ng/l). The plasma concentrations were lower than those previously described in adults, but higher than in neonates. There was no association between an increase in prothrombin time and vitamin K1 plasma concentration.
متن کاملRemarkable Features of the Hotdog-fold Thioesterases Involved in Phylloquinone (vitamin K1) Biosynthesis
A C K N O W L E D G M E N T S 5 T A B L E O F C O N T E N T S 6 L I S T O F F I G U R E S 8 L I S T O F T A B L E S 9 C H A P T E R 1 10 L ITERATURE REVIEW PREFACE 10 CHEMISTRY OF VITAMIN K 11 OCCURRENCE AND FUNCTIONS OF VITAMIN K 12 VERTEBRATES 12 (MOST) ARCHAEA AND BACTERIA 13 PLANTS, DIATOMS, ALGAE AND CYANOBACTERIA 14 BIOSYNTHESIS OF VITAMIN K 16 BACKGROUND 16 ISOCHORISMATE SYNTHASE AND PHY...
متن کاملEffect of warfarin on the metabolism of phylloquinone (vitamin K1):dose-response relationships in man.
Summarg 1. The dose-response relationship between the oral anticoagulant, warfarin, and its effect on the metabolism of phylloquinone (vitamin K,) has been examined in normal male volunteer subjects. 2. In each study the subject received a single, oral dose of warfarin and, 2 h later, an intravenous injection of [l ',2'-3H2 Jphylloquinone. Changes in the metabolism of phylloquinone were assesse...
متن کاملSite of prenylation reaction in synthesis of phylloquinone (vitamin K1) by spinach chloroplasts.
1,4-Dihydroxy-2-naphthoate [1, 21 as the crucial intermediate in the biosynthesis of menaquinones in bacteria is formed from shikimate [3] via chorismate [2] and o-succinylbenzoate [I]. Prenylation [4] and methylation [I] result in formation of menaquinones of different length of side chain. The principal steps of the synthesis of the naphthoquinone moiety are similar for both plants and bacter...
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ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 1998
ISSN: 0002-9165,1938-3207
DOI: 10.1093/ajcn/67.6.1226