there is an inverse relationship between the rate of ( 3 ) h release , under these conditions , and the magnitude of the relaxant response to hyd , i.e. , ( 3 ) h leakage is higher in proximal nw segments.5 the most satisfactory explanation for the interaction of hyd and pyd with exogenous purines , and for the modulating actions of sympathetic nerve terminals , is that both antihypertensives act on a common receptor , sensitive to endogenous atp and adenosine .
C0001480
atp
C0001443
adenosine