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The Effect of Indomethacin on Na-K-ATPase and K-pNPPase Activity of Rat Brain
Journal of Korean Neurosurgical Society ; : 511-520, 1986.
Article Dans Coréen | WPRIM | ID: wpr-101871
ABSTRACT
The effect of indomethacin on Na-K-ATPase and K-pNPPase activity was studied with rat brain homogenate. The results were as follows 1) Indomethacin inhibited both Na-K-ATPase and K-pNPPase in a dose-related pattern. 2) Inhibition mode of indomethacin for K+ in both Na-K-ATPase and K-pNPPase was competitive type. 3) Indomethacin showed stimulative effect at lower sodium concentration below 10mM, and showed inhibitory effect at higher sodium concentration on Na-K-ATPase and K-pNPPase activity, and the inhibitory effect was slightly increased with increasing concentration of sodium. 4) The inhibitory effect of indomethacin on Na-K-ATPase activity was increased with increasing ATP concentration, but was not affected by Mg++ concentration. These results indicate that indomethacin inhibits Na-K-ATPase activity by inhibiting K+- dependent dephosphorylation steps.
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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Sodium / Encéphale / Adénosine triphosphate / Indométacine Limites du sujet: Animaux langue: Coréen Texte intégral: Journal of Korean Neurosurgical Society Année: 1986 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Sodium / Encéphale / Adénosine triphosphate / Indométacine Limites du sujet: Animaux langue: Coréen Texte intégral: Journal of Korean Neurosurgical Society Année: 1986 Type: Article