MAP (mmHg) HR (bpm) RSNA (%)
DS8% ras (n=9) 153 ± 4* 392 ± 11 24.4 ± 3.2
DS0.4% rats (n=8) 104 ± 3 378 ± 15 28.6 ± 2.4
DR8% rats (n=8) 96 ± 3 373 ± 16 24.7 ± 2.6
DR0.4% rats (n=9) 97 ± 2 393 ± 11 25.6 ± 1.8
DS8% rats: Dahl salt-sensitive rats fed an 8% NaCl diet; DS0.4% rats: Dahl saltsensitive rats fed a 0.4% NaCl diet; DR8% rats: Dahl salt-resistant rats fed an 8% NaCl diet; DR0.4% rats: Dahl salt-resistant rats fed a 0.4% NaCl diet. MAP: mean arterial pressure; HR: heart rate; RSNA: renal sympathetic nerve activity, expressed as a %. The maximum RSNA (100%) was obtained by release of baroreflex-mediated inhibition by caval occlusion. *: p < 0.05 between the S8%, S0.4%, R8%, and R0.4% rat groups. The S8% rats show marked hypertension, but the RSNA level of the group does not show any difference between the four rat groups [28].
Table 1: Resting levels of MAP, HR, and RSNA in the four rats groups.