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Rapeseed meal, the residue after oil extraction, is an animal feed of great commercial interest. Some genetic strains of rapeseed yield a meal which when fed in high concentration produces hemorrhagic lesions in the liver of chickens. These lesions are reduced in incidence by the simultaneous
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METHODS
The mechanism for increased bleeding and decreased vitamin K status accompanying vitamin E supplementation is unknown. We hypothesized that elevated hepatic α-tocopherol (α-T) concentrations may stimulate vitamin K metabolism and excretion. Furthermore, α-T may interfere with the side chain
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The role of erythrocytes in realization of interrelation of the immunomodulating effects of lysozyme and naphthoquinones in normal and under conditions of acute hemorrhage was studied. Interaction of lysozyme and menadione at the level of intact erythrocytes and their stroma resulted in formation of
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Menadione induced oxidative stress in cells. The acute and cumulative toxic effects of menadione were evaluated by intravenous injection of the drug in Wistar rats. For evaluation of acute toxicity, single bolus doses of 25, 50, 100 and 150 mg/kg menadione were used. For evaluation of cumulative
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Pathophysiological mechanisms of the vitamin K impact, including those in the gut with ulcerative affection, are studied still insufficiently. Investigations of pharmacogenomics of the vitamin K gives a new approach to therapy in patients, suffering gastro-intestinal hemorrhage. Possibilities of
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The cause of a fatal condition characterized by hemorrhagic cardiomyopathy, hemothorax, and coagulation defects in hysterectomy-derived male mice was investigated. Microscopic heart alterations included multifocal hemorrhage and necrosis with variable degrees of acute inflammation and fibroplasia
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The recent increase in the clinical use of synthetic vitamin A compounds has led to concern of possible side effects. Some of these effects are known to be influenced by dietary levels of vitamin K. We therefore compared the toxic effects of 13-cis-retinoic acid (13cisRA), retinyl acetate (ROAc),
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The occurrence of liver haemorrhages was compared when diets containing 30 or 40 per cent rapeseed meal (RSM) or 30 per cent soybean meal (SBM), with and without experimental additives, were fed to in-lay hens of a commercial egg-producing strain for 12 weeks. The incidence of haemorrhages was
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Protein misfolding and aggregation are associated with amyloidosis. The toxic aggregation of amyloid-β 1-42 (Aβ42) may disrupt cell membranes and lead to cell death and is thus regarded as a contributing factor in Alzheimer's disease (AD). 1,4-naphthoquinone (NQ) has been shown to exhibit strong
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This chapter includes the aspects of Menadione (vitamin K). The drug is synthesized by the use of itaconic acid obtained through Friedel-Craft condensation or by direct oxidation of the 2-methyl-1,4-naphthquinone. Vitamin K generally maintains healthy blood clotting and prevents excessive bleeding
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One hundred term exclusively breast fed babies weighing more than 2.5 kg were evaluated to determine the efficacy of various modes and doses of Vitamin K to prevent hemorrhagic disease of newborn (HDN). The babies were grouped into four categories of 25 each: Group A--1 mg Vitamin K intramuscular
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Intramuscular administration of vitamin K for prophylaxis against hemorrhagic disease of the newborn has the disadvantage of increased cost, pain, anxiety to parents and risk of transmission of infection. Oral route is a better alternative. Oral absorption of vitamin K has been shown to be equally
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Three factorial experiments were conducted to evaluate the effects of various Ca:P ratios (1:1, 2:1 and 3:1) in diets having deficient (.3%), adequate (.6%) and excess (.9%) levels of dietary P on rate and efficiency of gain and bone strength of 192 pigs from 18 to 40 kg BW. A corn-soybean meal diet
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In contrast to other fat-soluble vitamins, dietary vitamin K is rapidly lost to the body resulting in comparatively low tissue stores. Deficiency is kept at bay by the ubiquity of vitamin K in the diet, synthesis by gut microflora in some species, and relatively low vitamin K cofactor requirements
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