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[Effect of acute ethanol administration on lipid composition of rat liver plasma membrane and serum--with two different doses of ethanol]. 1992

T Yamashita, and T Tanaka, and M Warashina, and K Kondo, and Y Goto, and S Kawai, and K Kurai, and S Kunito, and T Monna, and T Matsui
Department of Public Health, Osaka City University Medical School, Japan.

This investigation was performed to determine whether acute ethanol administration (5 g and 3 g/kg body wt.) alters the lipid composition both of liver plasma membrane (LPM) and serum in rat or not. The changes of lipid composition of LPM and serum were observed during peak values which blood ethanol concentration was achieved, after both 5 g and 3 g/kg body wt. ethanol administration; LPM cholesterol (CH) content was significantly decreased, but LPM phospholipids (PL) content was not changed statistically. Serum CH and PL contents were significantly increased. However, CH/PL molar ratio showed significant decreases in both LPM and serum. SPM/PC in LPM was also decreased significantly. These changes of lipid composition in LPM were associated with the increase of the fluidity as demonstrated in our previous reports. These lipid values in ethanol treated animals expressed as a ratio of those from corresponding control animals, taken as 1, consisted with 0.7-0.8, that is very interesting from viewpoint of "homeoviscous adaptation", and in addition, suggesting the possibility that serum CH/PL molar ratio may be useful for the estimation of the changes of lipid composition concerned with LPM fluidity.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D008560 Membrane Fluidity The motion of phospholipid molecules within the lipid bilayer, dependent on the classes of phospholipids present, their fatty acid composition and degree of unsaturation of the acyl chains, the cholesterol concentration, and temperature. Bilayer Fluidity,Bilayer Fluidities,Fluidities, Bilayer,Fluidities, Membrane,Fluidity, Bilayer,Fluidity, Membrane,Membrane Fluidities
D010743 Phospholipids Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system. Phosphatides,Phospholipid
D002462 Cell Membrane The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells. Plasma Membrane,Cytoplasmic Membrane,Cell Membranes,Cytoplasmic Membranes,Membrane, Cell,Membrane, Cytoplasmic,Membrane, Plasma,Membranes, Cell,Membranes, Cytoplasmic,Membranes, Plasma,Plasma Membranes
D002784 Cholesterol The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. Epicholesterol
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D000431 Ethanol A clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It has bactericidal activity and is used often as a topical disinfectant. It is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in ALCOHOLIC BEVERAGES. Alcohol, Ethyl,Absolute Alcohol,Grain Alcohol,Alcohol, Absolute,Alcohol, Grain,Ethyl Alcohol
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats

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