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. Author manuscript; available in PMC: 2011 Apr 19.
Published in final edited form as: Auton Neurosci. 2009 Nov 3;154(1-2):14–19. doi: 10.1016/j.autneu.2009.09.023

Figure 4.

Figure 4

Effects of α4β2 nAchRs antagonist DHβE on the baroreflex-induced parasympathetic response. A. Raw recordings showing that intravenous injection of phenylephrine (PE) induced pressor and bradycardic responses (left). Pre-administration of DHβE largely blocked the bradycardic response (right). B. Mean data of the ratio of the decrease in heart rate versus the increase in mean blood pressure, showing that compared with the PE alone (open bars), pre-administration of DHβE (solid bars) significantly attenuated the decrease in heart rate induced by the baroreflex. The vertical dotted lines in the recording traces showed the relative positions of injections. “*” indicate P<0.05 compared with the PE only group. n=4