title: Alcohol-membrane interaction: calcium uptake in mitochondria.
abstract: A biphasic effect of ethanol was observed on Ca2+-uptake activity, Ca2+-uncoupled respiratory control ratio (CURCR), and State 3 oxygen uptake. At low concentrations (0.1-0.5%) ethanol enhanced these activities, probably as the result of an increase in membrane fluidity. At higher levels (0.7-4.0%) ethanol had an inhibitory influence on mitochondrial activities as the membrane macromolecules were probably disturbed due to the hydrophobic alcohol-membrane interaction.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002132:Calcium Radioisotopes; D000431:Ethanol / Q000494:pharmacology*; D066298:In Vitro Techniques; D008297:Male; D008566:Membranes / Q000187:drug effects / Q000378:metabolism; D008930:Mitochondria, Liver / Q000187:drug effects / Q000378:metabolism* / Q000648:ultrastructure; D010101:Oxygen Consumption / Q000187:drug effects; D051381:Rats; D013696:Temperature
chemical_list: D002132:Calcium Radioisotopes; D000431:Ethanol; D002118:Calcium