Fig. 2
Mean arterial pressure (MAP, a) and heart rate (HR, b) were continuously monitored throughout 180 min in conscious rats that received iv administration of saline (Sal, n = 12) or LPS [1.5 (n = 12) and 2.5 mg kg−1(n = 07)]. Note the acute hypotension and tachycardia after LPS administration. MAP (c) and HR (d) at 3 and 24 h after LPS in comparison with Sal (3 h). Magnitude of low (LF, e) and high frequency (HF, f) components of PI and LF component of SAP (g). *P < 0.05 of LPS-treated group (1.5 and 2.5 mg kg−1) compared with Sal, #P < 0.05 compared with time zero from LPS-treated group of 1.5 and 2.5 mg kg−1. No differenced P > 0.05. were observed between LPS doses tested