(Na+,K+)-ATPase stimulation by sucrose feeding: prevention by 6-hydroxydopamine.

The effects of sucrose feeding on parameters associated with (Na+,K+)-ATPase in brown adipose tissue were compared in rats treated with parenteral 6-hydroxydopamine and vehicle. Sucrose feeding significantly increased K+-p-nitrophenylphosphatase and ouabain binding in brown adipose tissue from rats treated with vehicle. By contrast, sucrose feeding had no effects on these measurements in rats treated with parenteral 6-hydroxydopamine. 6-hydroxydopamine did not significantly alter sucrose consumption and there were no significant effects on weight gain during the short experimental period.