Abstract
The effect of hydrocortisone and thyroxine, on the activities of Ca2+-and Mg2+-ATPase was studied in cultured neuronal (clone M1) and glial (clones NN and C6) cell lines. For M1 and NN cells an increase in Ca2+-and Mg2+-ecto-ATPase activity was found when the cells were cultured during 4–6 days in presence of hydrocortisone or together with thyroxine. In the same conditions, a decrease in Ca2+-and Mg2+-ecto-ATPase activity was found for the C6 cells. In C6 cells the effect of hormones was more pronounced for the Mg2+-than for the Ca2+-ecto-ATPase activity. The observed decrease may be related to the tumoral origin of the C6 cells. The activity of (Na+, K+)-ATPase in all three cell lines increased in presence of hydrocortisone or together with thyroxine when the cells were cultured during 4–6 days, in presence of the hormones, whereas the total Mg2+-ATPase activity increased only after 6 days of treatment. Thyroxine alone has very few effect either on Ca2+-and Mg2+-ecto-ATPase, or on (Na+, K+)-and total Mg2+-ATPase activity. These observations are interpreted to indicate that hormones may modulate or induce enzymatic activities involved in active transport phenomena in nervous tissue.
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Elkouby, A., Ledig, M. & Mandel, P. Effect of hydrocortisone and thyroxine on ATPase activities of neuronal and glial cell lines in culture. Neurochem Res 7, 387–397 (1982). https://doi.org/10.1007/BF00965492
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DOI: https://doi.org/10.1007/BF00965492