Voprosy meditsinskoi khimii (ISSN 0042-8809)

The effect of methyluracil polymorphism on lipid and antioxidant composition of rat tissues

   
Leonidov N.B., Romanenko E.B., Lebedev A.V.
PubMed Id: 7793093
Year: 1995 vol: 41  issue:2  pages: 32-35
Abstract: The effect of two methyluracil forms on the composition of lipids, the content of peroxidation products and the amount of lipid-soluble scavengers of free radicals was studied in rat liver and heart tissues. Both these forms caused an increase in content of total lipids in the animal liver tissue 2 hrs after injection, whereas beta-form increased 1.6-fold the content of cholesterol esters and 1.9-fold that of triglycerides in liver tissue, unlike the alpha-form which affected these parameters slightly. The effect of methyluracil polymorphic derivatives on lipid peroxidation (TBA-positive products) was not detected. The methyluracil beta-form, not affecting the total pool of hydrophobic antioxidants, was found to decrease the content of active scavengers of free radicals in rat liver and heart tissues, as well as beta-form decreased the content of vitamin E in these tissues. At the same time, the methyluracil alpha-form did not affect the composition of tissue hydrophobic antioxidants. These differences found in the effect of two methyluracil forms on lipid composition and lipid-soluble scavengers of free radicals may be responsible for biological nonequivalence of the drug polymorphic forms.
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Reference: Leonidov N.B., Romanenko E.B., Lebedev A.V., The effect of methyluracil polymorphism on lipid and antioxidant composition of rat tissues, Voprosy meditsinskoi khimii, 1995, vol: 41(2), 32-35.
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