Dahl SR rats on NS diet were pretreated with the epoxygenase inhibitor, MS-PPOH (20 mg/Kg/day), for 3 days prior to switching rats to a HS (2% saline drinking water) intake. After 3 days of HS intake with MS-PPOH treatment, MS-PPOH was withdrawn while rats remained on HS intake for 3 more days. Rats were then switched to NS diet for 7 days. The selective A2A R antagonist, ZM 241385 (5 mg/Kg/day), was then given for 3 days prior to switching rats back to HS intake. ZM 241385 treatment continued during 3 days of HS intake. Data are expressed as means ± SEM; n = 6–7; *** p<0.001 vs. NS.