Summary
Na+, K+-adenosinetriphosphatase (Na+, K+-ATPase) activity was decreased in liver plasma membranes from rats in which cholestasis had been induced by i.v. administration of sodium taurolithocholate (5 μmoles/100 g b. wt). Incubation of liver plasma membranes with taurolithocholate (10–1300 μM) caused significant and dose dependent reductions of Na+, K+-ATPase activity at taurolithocholate concentrations above 100 μM. These findings lend support to the hypothesis that cholestasis induced by monohydroxy bile acids is at least partially the result of an inhibition of hepatic Na+, K+-ATPase activity.
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This work was supported by the Swiss National Science Foundation.
The authors thank Mr H. Sägesser and Miss B. Schütz for technical assistance.
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Reichen, J., Paumgartner, G. Inhibition of hepatic Na+, K+-adenosinetriphosphatase in taurolithocholate-induced cholestasis in the rat. Experientia 35, 1186–1188 (1979). https://doi.org/10.1007/BF01963278
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DOI: https://doi.org/10.1007/BF01963278