menaquinone


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menaquinone

 [men″ah-kwin´ōn]
any of a series of compounds having vitamin K activity, in which the phytyl side chain of phytonadione (vitamin K1) is replaced by a side chain of prenyl units.

menaquinone

/men·a·quin·one/ (men″ah-kwin´ōn) vitamin K2; any of a series of compounds having vitamin K activity and structurally similar to phytonadione (vitamin K1) but having a different side chain; synthesized by the intestinal flora.

menaquinone

(mĕn′ə-kwĭ-nōn′, -kwĭn′ōn′)

menaquinone

any of a series of compounds having vitamin K activity, in which the phytyl side-chain of phytomenadione (vitamin K1) is replaced by a side-chain of prenyl units. Called also vitamin K2.
References in periodicals archive ?
Vermeer, "Determination of Phylloquinone and Menaquinones in Food: Effect of Food Matrix on Circulating Vitamin K Concentrations," Haemostasis 30, 298-307 (2000).
8220;The role of menaquinones (vitamin K₂) in human health” Journal of Nutrition 110(8):1357-68 (2013).
Dietary phylloquinone and menaquinones intakes and risk of type 2 diabetes.
Further breaking this down, K2 is known to occur in two forms--menaquinone 4, typically sourced from meat and menaquinone 7 (MK-7), sourced from natto (Japanese fermented soy food) and cheeses.
The company's proprietary technology will initially be used to produce menaquinone or vitamin K2 MK-7 for the human nutrition market in Europe and North America.
We observed a nonsignificant inverse association between total prostate cancer and total menaquinone intake [multivariate relative risk (highest compared with lowest quartile): 0.
Menaquinones of various chain lengths are present in some foods, such as cheese, egg yolks, and natto (fermented soybeans).
88) The longer-chain menaquinones such as MK7 are much more hydrophobic, which contributes to their much longer half-lives (8 hours for K1 and MK4 vs.
Menaquinones belong to the same family of structurally similar fat-soluble naphtaquinones as phylloquinones, which are found in plants.