because the major regulator of na+ uptake into the proximal tubule is the na+/h+ exchanger , and because alpha-1 and alpha-2 adrenoceptors stimulate it in other tissues , we tested the hypothesis that both alpha adrenoceptor subtypes can increase na+ uptake into the proximal nephron by stimulating the na+/h+ antiporter .
C0001639
alpha-2 adrenoceptors
C0034784
alpha adrenoceptor