menadione


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

menadione

 [men″ah-di´ōn] vitamin K3.
1. a synthetic fat-soluble vitamin that can be converted in the body to active vitamin K; administered orally or intramuscularly. See vitamin.
2. the basic double ring quinone structure that is the parent structure of the related compounds with vitamin K activity, which can be formed by addition of long side chain substituents.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

men·a·di·one

(men'ă-dī'ōn),
The root of compounds that are 3-multiprenyl derivatives of menadione and known as the menaquinones or vitamins K2.
Synonym(s): vitamin K3
Farlex Partner Medical Dictionary © Farlex 2012

menadione

(mĕn′ə-dī′ōn′)
n.
A synthetic vitamin K derivative that is a yellow crystalline powder, C11H8O2, used as a vitamin K supplement.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Menadione

A synthetic form of vitamin K. It is sometimes called vitamin K3.
Mentioned in: Vitamin Toxicity
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

men·a·di·one

(men'ă-dī'ōn)
Root of compounds that are 3-multiprenyl derivatives of menadione and known as the menaquinones or vitamins K2.
Synonym(s): vitamin K3.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The TM cells were treated with or without 25 [micro]M Y-27632 for 30 min, followed by menadione stimulation of the cells for 24 h.
Thus, the increase in antioxidant defense as a result of mild oxidative stress can explain higher resistance of AKG-grown YPH250 cells to [H.sub.2][O.sub.2], menadione, and [Fe.sup.2+] and [Cu.sup.2+] ions.
Szentirmai, "Analysis of the oxidative stress response of Penicillium chrysogenum to menadione," Free Radical Research, vol.
The researchers scanned lab-cultured liver cells as they encountered menadione, an analog of a drug used against cancer.
Synthetic vitamin K is identified by the chemical name menadione. Menadione is extremely unstable, so pure vitamin K is not utilized in the feed industry.
were noncompetitive against NADPH and menadione. However, at saturating levels of NADPH, bithionol sulfoxide inhibited to a lesser extent and bithionol was competitive against menadione.
aureus small colony variants are characterized as electron transport deficient bacteria because of their auxotrophism to hemin or menadione or are recognized as thymidine-dependent.
Vitamin K comprises three main forms: vitamin K1 or phylloquinone which is found in green plants; vitamin K2 or the menaquinone family which is synthesised by bacteria in the large intes tine; and vitamin K3 or menadione which is a synthetic, water-soluble form that has been utilised in animal feeds.
Composition (g/kg): Retinol (22.2), Cholecalciferol (1.1), Tocopherol (10.3), Menadione (2.3), Thiamine (5.0), Riboflavin (5.7), Pyridoxine (10.1), Niacin (10.9), Pantothenic acid (10.9), Biotin (0.2), Choline (0.8), Folic acid (3.5), Cyanocobalamine (0.02), Dextrin (917.0).
Grain products, plant protein products, forage products, animal protein products, process grain by-products, vitamin A supplement, D activated animal sterol (source of vitamin D), ethoxyquin (a preservative), vitamin E supplement, riboflavin supplement, DL-methionine, vitamin B12 supplement, menadione sodium bisulfate (source of vitamin K activity), sodium selenite, choline chloride, calcium pantothenate, niacin supplement, calcium carbonate, dicalcium phosphate, manganous oxide, calcium iodate, copper oxide, zinc oxide