TY - JOUR ID - 10366 TI - Evaluation of nicotinic receptor of pedunculopontine tegmental nucleus in central cardiovascular regulation in anesthetized rat JO - Iranian Journal of Basic Medical Sciences JA - IJBMS LA - en SN - 2008-3866 AU - Nikyar, Tahereh AU - Hosseini, Mahmoud AU - Niazmand, Saeed AU - Shafei, Mohammad Naser AD - Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran AD - Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran AD - Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Y1 - 2018 PY - 2018 VL - 21 IS - 4 SP - 376 EP - 381 KW - Acetylcholine KW - Blood pressure Hexamethonium KW - Nicotinic receptor KW - Pedunculopontine tegmental nucleus DO - 10.22038/ijbms.2018.25616.6319 N2 - Objective(s): Cholinergic neurons are important neurons in the Pedunculopontine tegmental nucleus (PPT). In this study, nicotinic receptor of the PPT in central cardiovascular regulation in the anesthetized rat was evaluated. Materials and Methods: Saline, acetylcholine (Ach; doses: 90 and 150 nmol), hexamethonium (Hexa; doses: 100 and 300 nmol) and higher doses of Hexa (300 nmol) + Ach (150 nmol) microinjected into the PPT. The femoral artery was cannulated and cardiovascular responses were continuously recorded by a power lab system. After injection of drugs, peak changes of mean arterial pressure (∆MAP), systolic blood pressure (∆SBP) and heart rate (∆HR) calculated and compared with saline group.Results: The ∆SBP and ∆MAP significantly decreased by two doses of Ach (PConclusion: These results indicate that nicotinic receptor of the PPT has an inhibitory effect on ∆HR with no significant effect on ∆MAP or ∆SBP. UR - https://ijbms.mums.ac.ir/article_10366.html L1 - https://ijbms.mums.ac.ir/article_10366_c9fa77f5039c35fd19ef5141514bcdf3.pdf ER -