Abstract
The effect of alcohol on enzymes involved in energy metabolism of nervous tissue were analyzed, in vivo after acute and chronic ethanol administration to rats and in vitro by addition of 50 mM and 100 mM ethanol to the medium of cultured nerve cells: chick neurons, chick glial cells, a neuronal cell line (MT17) and a glial tumoral cell line (C6). The parameters we measured were (Na+,K+), Mg2+ and ecto Ca2+,Mg2+ ATPase activities involved in transport phenomena and enolase activities (non neuronal NNE and neuron specific enolase NSE) as markers of nerve cell maturation. In vivo, after chronic ethanol administration (Na+,K+) ATPase activity was increased while Mg2+ dependent activity was not affected. Enolase activity was decreased. Acute ethanol administration decreased (Na+,K+) ATPase activity, while Mg2+ dependent activity was not affected. In cultured nerve cells ethanol effect was dose, time and cell type dependent; alterations of the cell membrane by trypsinization of the tissue before seeding modifies the effect of ethanol on the enzymes we analyzed. Our results suggest that alcohol effect on nerve cells depends mainly on the lipoprotein structure of the cell membranes which may have different properties from one cell type to another.
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Ledig, M., Kopp, P. & Mandel, P. Effect of ethanol on adenosine triphosphatase and enolase activities in rat brain and in cultured nerve cells. Neurochem Res 10, 1311–1324 (1985). https://doi.org/10.1007/BF00964849
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DOI: https://doi.org/10.1007/BF00964849