Fig. 4.

MAP (mmHg) (A) and an index of salt sensitivity (B) determined from 24-h sodium excretion and baseline MAP in conscious male Sprague-Dawley rats receiving either a subcutaneous 50:50 DMSO/isotonic vehicle saline infusion, a subcutaneous NE (600 ng/min) infusion or a subcutaneous NE (600 ng/min) and HCTZ (4 mg·kg⁻¹·day⁻¹) infusion maintained on either a normal (0.6% NaCl) or high-salt (8% NaCl) diet for 14 days. Data are expressed as means ± SE (n = 6/group) *P < 0.05 vs. respective 0.6% NaCl group value; τP < 0.05 vs. respective DMSO/saline group value; ϕP < 0.05 vs. respective NE group value. Data for subcutaneous NE infusion reproduced from Fig. 1 for clarity.