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Yuan M, Ma MN, Wang TY, Feng Y, Chen P, He C, Liu S, Guo YX, Wang Y, Fan Y, Wang LQ, E XQ, Qiao GF, Li BY. Direct activation of tachykinin receptors within baroreflex afferent pathway and neurocontrol of blood pressure regulation. CNS Neurosci Ther 2018; 25:123-135. [PMID: 29900692 DOI: 10.1111/cns.12993] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/12/2018] [Accepted: 05/20/2018] [Indexed: 12/16/2022] Open
Abstract
AIM Substance P (SP) causes vasodilation and blood pressure (BP) reduction. However, the involvement of tachykinin receptors (NKRs) within baroreflex afferent pathway in SP-mediated BP regulation is largely unknown. METHODS Under control and hypertensive condition, NKRs' expressions were evaluated in nodose (NG) and nucleus of tractus solitary (NTS) of male, female, and ovariectomized (OVX) rats; BP was recorded after microinjection of SP and NKRs agonists into NG; Baroreceptor sensitivity (BRS) was tested as well. RESULTS Immunostaining and immunoblotting data showed that NK1R and NK2R were estrogen-dependently expressed on myelinated and unmyelinated afferents in NG. A functional study showed that BP was reduced dose-dependently by SP microinjection, which was more dramatic in males and can be mimicked by NK1R and NK2R agonists. Notably, further BP elevation and BRS dysfunction were confirmed in desoxycorticosterone acetate (DOCA)-salt model in OVX compared with DOCA-salt model in intact female rats. Additionally, similar changes in NKRs' expression in NG were also detected using DOCA-salt and SHR. Compared with NG, inversed expression profiles of NKRs were also found in NTS with either gender. CONCLUSION The estrogen-dependent NKRs' expression in baroreflex afferent pathway participates at least partially in sexual-dimorphic and SP-mediated BP regulation under physiological and hypertensive conditions.
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Affiliation(s)
- Mei Yuan
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Mei-Na Ma
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Ting-Yu Wang
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yan Feng
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Pei Chen
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Chao He
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Sijie Liu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yun-Xia Guo
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yue Wang
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yao Fan
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Lu-Qi Wang
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiao-Qiang E
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guo-Fen Qiao
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Bai-Yan Li
- Department of Pharmacology, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Medicine Research, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, China
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Ratz PH, Miner AS, Huang Y, Smith CA, Barbee RW. Vascular smooth muscle desensitization in rabbit epigastric and mesenteric arteries during hemorrhagic shock. Am J Physiol Heart Circ Physiol 2016; 311:H157-67. [PMID: 27199133 DOI: 10.1152/ajpheart.00926.2015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 05/10/2016] [Indexed: 01/08/2023]
Abstract
The decompensatory phase of hemorrhage (shock) is caused by a poorly defined phenomenon termed vascular hyporeactivity (VHR). VHR may reflect an acute in vivo imbalance in levels of contractile and relaxant stimuli favoring net vascular smooth muscle (VSM) relaxation. Alternatively, VHR may be caused by intrinsic VSM desensitization of contraction resulting from prior exposure to high levels of stimuli that temporarily adjusts cell signaling systems. Net relaxation, but not desensitization, would be expected to resolve rapidly in an artery segment removed from the in vivo shock environment and examined in vitro in a fresh solution. Our aim was to 1) induce shock in rabbits and apply an in vitro mechanical analysis on muscular arteries isolated pre- and postshock to determine whether VHR involves intrinsic VSM desensitization, and 2) identify whether net VSM relaxation induced by nitric oxide and cyclic nucleotide-dependent protein kinase activation in vitro can be sustained for some time after relaxant stimulus washout. The potencies of phenylephrine- and histamine-induced contractions in in vitro epigastric artery removed from rabbits posthemorrhage were decreased by ∼0.3 log units compared with the control contralateral epigastric artery removed prehemorrhage. Moreover, a decrease in KCl-induced tonic, relative to phasic, tension of in vitro mesenteric artery correlated with the degree of shock severity as assessed by rates of lactate and K(+) accumulation. VSM desensitization was also caused by tyramine in vivo and PE in vitro, but not by relaxant agents in vitro. Together, these results support the hypothesis that VHR during hemorrhagic decompensation involves contractile stimulus-induced long-lasting, intrinsic VSM desensitization.
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Affiliation(s)
- P H Ratz
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia; and
| | - A S Miner
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia; and
| | - Y Huang
- Departments of Emergency Medicine and Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia
| | - C A Smith
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia; and
| | - R W Barbee
- Departments of Emergency Medicine and Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia
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Kim JH, Lee JU, Kim IH, Kim MY, Kim B, Kim J. Noxiousness of Hypertension-related Norepinephrine and Upregulation of Norepinephrine Induced by High Intensity Electrical Stimulation in Healthy Volunteers. J Phys Ther Sci 2012. [DOI: 10.1589/jpts.24.795] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Ju-Hyun Kim
- Graduate School of Rehabilitation and Health Science, Doctoral Course, Yongin University
| | - Jeong-Uk Lee
- Graduate School of Rehabilitation and Health Science, Doctoral Course, Yongin University
| | - Il-Hyun Kim
- Graduate School of Rehabilitation and Health Science, Doctoral Course, Yongin University
| | - Mee-Young Kim
- Graduate School of Rehabilitation and Health Science, Doctoral Course, Yongin University
| | - Bokyung Kim
- Department of Physiology, Institute of Functional Genomics, School of Medicine, Konkuk University
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University
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