Effect of intravenous bolus infusion of α,β-methylene ATP on systolic arterial pressure and RBF. A: changes in systolic pressure were measured in saline-infused (filled bars) and PPADS-infused rats (20 μmol/kg, open bars) in response to α,β-methylene ATP infusion. B: average RBF in saline-infused (●) and PPADS-infused rats (20 μmol/kg, ○) in response to α,β-methylene ATP infusion. C: data are expressed as change from baseline RBF immediately preceding α,β-methylene ATP infusion. For comparison, saline vehicle experiments (●) are reproduced from Figs. 1A, 2, A and B. *P < 0.05 vs. baseline. #P < 0.05 between groups.