N V Wellsmith

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Some evidence indicates that the inotropic effect of cardiac glycosides occurs at concentrations too low to affect Na+,K+-ATPase activity. This suggests that some receptor other than Na+,K+-ATPase mediates the inotropic effect. We studied ouabain binding to sarcolemma-enriched preparations from canine ventricle under conditions known to promote binding to(More)
A highly enriched sarcolemma preparation was isolated by differential centrifugation of a canine ventricular homogenate followed by centrifugation of a membrane fraction layered over 22% (w/v) sucrose. Ouabain binding, ouabain-sensitive potassium phosphatase activity and 5'-nucleotidase activity were enriched 19--27 fold over the homogenate whereas(More)
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