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Shafei MN, Fakharzadeh Moghaddam O, Alikhani V, Mohebbati R. The possible role of pedunculopontine tegmental nucleus (PPT) opioid receptors in the cardiovascular responses in normotensive and hemorrhagic hypotensive rats. Clin Exp Hypertens 2022; 44:366-371. [PMID: 35261308 DOI: 10.1080/10641963.2022.2050744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND The pedunculopontine tegmental nucleus (PPT) is involved in cardiovascular regulation. The presence of mu (μ) opioid receptors in the PPT nucleus has been determined. In the present study, the role of this nucleus in normotensive conditions and then the role of these receptors on cardiovascular function in hypotension induced by hemorrhage (HEM) were investigated. METHOD Animals were divided into the following groups: Group 1: control, Group 2: HEM, Group 3: morphine at dose 100 nmol (a general opioid receptor agonist), Group 4: naloxone at dose 100 nmol (a general opioid receptor antagonist), Group 5: morphine + HEM, and Group 6: naloxone + HEM. After anesthesia, two femoral arteries were cannulated to record the cardiovascular parameters and blood withdrawal. Two minutes after induction of HEM, drugs were injected into the nucleus, and cardiovascular parameters were measured. Changes (Δ) in cardiovascular responses due to drug injection and HEM were calculated and compared to control and HEM groups. RESULTS HEM significantly reduced changes in systolic and mean arterial pressures and increased heart rate changes compared to control. Morphine microinjection in normotensive and HEM rats significantly decreased systolic blood pressure, mean arterial pressure, and heart rate, and naloxone significantly increased all these parameters. CONCLUSION This study showed that the PPT nucleus plays a role in modulating the cardiovascular responses induced by HEM. The µ opioid receptor of the PPT nucleus in the normotensive and HEM rats have inhibitory effects on blood pressure and heart rate mainly, and these effects are eliminated by naloxone microinjection.
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Affiliation(s)
- Mohammad Naser Shafei
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Vida Alikhani
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Mohebbati
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Mohebbati R, Hosseini M, Khazaei M, Khajavirad A, Shafei MN. The Effects of Inactivation of Pedunculopontine Tegmental Nucleus by Cobalt (II) Chloride on Cardiovascular Responses in Hemorrhagic Hypotensive Rats. Basic Clin Neurosci 2019; 10:235-244. [PMID: 31462978 PMCID: PMC6712636 DOI: 10.32598/bcn.9.10.315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/10/2017] [Accepted: 06/13/2018] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Based on the evidence, the Pedunculopontine Tegmental nucleus (PPT) is involved in cardiovascular function regulation. In this study, the probable role of PPT on cardiovascular parameters in the hypotension induced by Hemorrhage (HEM) was evaluated. METHODS The study rats were divided up into 5 groups: 1. Control (Saline); 2. Cobalt(II) chloride (CoCl2); 3. HEM; 4. Saline+HEM; and 5. CoCl2+HEM. Their right and left femoral arteries were cannulated for recording the cardiovascular responses and blood withdrawal, respectively. Saline and CoCl2 were microinjected into the PPT using the stereotaxic apparatus. Maximum changes of Systolic Blood Pressure (SBP), Mean Arterial Pressure (MAP), and the Heart Rate (HR) after the microinjection of CoCl2 in normal and Hemorrhage conditions were recorded. Changes of SBP, MAP, and HR were calculated over time at 5-min intervals and compared with those of the control and HEM groups using repeated measures ANOVA. The Independent sample t-test was used to compare the changes in cardiovascular parameters between the control and HEM groups at 0 and 20 min after Hemorrhage. RESULTS The changes in SBP, MAP, and HR in the CoCl2 group were not significantly different from those in the control group. In the HEM group, the SBP and MAP changes significantly decreased (P<0.001) and HR changes significantly increased (P<0.001) compared to those parameters in the control group. In the CoCl2+HEM group, SBP and MAP changes were significantly attenuated compared to those in the HEM group (P<0.05) and HR changes induced by Hemorrhage decreased compared to that in the HEM group (P<0.01). CONCLUSION Our results indicate that the PPT has no effects on normal cardiovascular parameters. However, it could modulate cardiovascular responses induced by Hemorrhage.
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Affiliation(s)
- Reza Mohebbati
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Hosseini
- Department of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Khazaei
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abolfazl Khajavirad
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Naser Shafei
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Niaz N, Guvenc G, Altinbas B, Berk Toker M, Aydin B, Udum-Kucuksen D, Alcay S, Gokce E, Ustuner B, Yalcin M. Intracerebroventricular injection of histamine induces the hypothalamic-pituitary-gonadal axis activation in male rats. Brain Res 2018; 1699:150-157. [PMID: 30130495 DOI: 10.1016/j.brainres.2018.08.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/29/2018] [Accepted: 08/17/2018] [Indexed: 11/17/2022]
Abstract
Brain histamine holds a key position in the regulation of behavioral states, biological rhythms, body weight, energy metabolism, thermoregulation, fluid balance, stress and reproduction in female animals. However, it is not clear whether central histamine exerts any effect on hypothalamic-pituitary-testicular in male rats and if so, the involvement of type of central histamine receptors. The current study was designed to determine the effect of centrally administrated histamine on plasma gonadotropin hormone-releasing hormone (GnRH), luteinizing hormone (LH), follicle stimulating hormone (FSH) and testosterone level, and sperm parameters, and to show the mediation of the central histaminergic H1, H2 and H3/H4 receptors on histamine-evoked hormonal and sperm parameters' effects. Studies were performed in male Sprague-Dawley rats. A total of 50 or 100 nmol doses of histamine were injected intracerebroventricularly (icv). 100 nmol dose of histamine significantly caused increases in plasma GnRH, LH, FSH and testosterone levels of animals, but not 50 nmol dose of histamine. Moreover, central pretreatment with chlorpheniramine, histaminergic H1 receptor antagonist (100 nmol), ranitidine and histaminergic H2 receptor antagonist (100 nmol) completely prevented histamine evoked increase in plasma GnRH, LH, FSH and testosterone levels, while thioperamide, histaminergic H3/H4 receptor antagonist (100 nmol) pretreatment failed to reverse sex hormones responses to histamine. Both central histamine treatment alone and central histamine treatment after central histaminergic receptors antagonists' pretreatments did not alter any sperm parameters in rats. In conclusion, our findings show that centrally administered histamine increases plasma GnRH, LH, FSH and testosterone levels of conscious male rats without change any sperm parameters. Moreover, according to our findings, central histaminergic H1, and H2 receptors mediate these histamine-induced effects.
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Affiliation(s)
- Nasir Niaz
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey; Department of Biosciences, University of Wah, Wah Cantt, Pakistan
| | - Gokcen Guvenc
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Burcin Altinbas
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey; Department of Physiology, Faculty of Medicine, Sanko University, Gaziantep 27090, Turkey
| | - Mehmed Berk Toker
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Begum Aydin
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Duygu Udum-Kucuksen
- Department of Biochemistry, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Selim Alcay
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Elif Gokce
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey; Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Namik Kemal University, Tekirdag, Turkey
| | - Burcu Ustuner
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Murat Yalcin
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey.
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Aydin B, Guvenc G, Altinbas B, Niaz N, Yalcin M. Modulation of nesfatin-1-induced cardiovascular effects by the central cholinergic system. Neuropeptides 2018; 70:9-15. [PMID: 29751997 DOI: 10.1016/j.npep.2018.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/03/2018] [Accepted: 05/03/2018] [Indexed: 10/17/2022]
Abstract
Nesfatin-1, a peptide whose receptor is yet to be identified, has been shown to be involved in the modulation of feeding, stress, and metabolic responses. Recently, increasing evidence has supported a modulatory role of nesfatin-1 in cardiovascular activity. We have previously reported that nesfatin-1 causes an increase in blood pressure in normotensive and hypotensive rats by increasing plasma catecholamine, vasopressin, and renin levels. Recent reports suggest that nesfatin-1 may activate the central cholinergic system. However, there is no evidence showing an interaction between central nesfatin-1 and the cholinergic system. Therefore, this study aimed to determine whether the central cholinergic system may have a functional role in the nesfatin-1-induced cardiovascular effect observed in normotensive rats. Intracerebroventricular injection of nesfatin-1 caused short-term increases in mean arterial pressure and heart rate responses including bradycardic/tachycardic phases in normotensive animals. Central injection of nesfatin-1 increased the acetylcholine and choline levels in the posterior hypothalamus, as shown in microdialysis studies. Central pretreatment with the cholinergic muscarinic receptor antagonist atropine and/or nicotinic receptor antagonist mecamylamine blocked nesfatin-1-induced cardiovascular effects. In conclusion, the results show that centrally administered nesfatin-1 produces a pressor effect on blood pressure and heart rate responses including bradycardic/tachycardic phases in normotensive rats. Moreover, according to our findings, the central cholinergic system can modulate nesfatin-1-evoked cardiovascular activity.
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Affiliation(s)
- Begum Aydin
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Gokcen Guvenc
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey
| | - Burcin Altinbas
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey; Department of Physiology, Faculty of Medicine, Sanko University, Gaziantep 27090, Turkey
| | - Nasir Niaz
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey; Department of Biosciences, University of Wah, Wah Cantt, Pakistan
| | - Murat Yalcin
- Department of Physiology, Faculty of Veterinary Medicine, Uludag University, Bursa 16059, Turkey.
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Karaoğlan ES, Albayrak A, Kutlu Z, Bayır Y. Gastroprotective and antioxidant effects of Eremurus spectabilis Bieb. methanol extract and its isolated component isoorientin on indomethacin induced gastric ulcers in rats. Acta Cir Bras 2018; 33:609-618. [DOI: 10.1590/s0102-865020180070000006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 06/12/2018] [Indexed: 01/29/2023] Open
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Sil’kis IG. A Neurochemical Approach to the Search for Drugs for the Treatment of Symptoms of Alzheimer’s Disease. NEUROCHEM J+ 2018. [DOI: 10.1134/s1819712418010130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Altinbas B, Guvenc G, Erkan LG, Ilhan T, Niaz N, Yalcin M. Histamine restores hemorrhage induced hypotension by activating cholinergic neurons in nucleus tractus solitarius. Brain Res 2016; 1649:132-140. [DOI: 10.1016/j.brainres.2016.06.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/27/2016] [Accepted: 06/30/2016] [Indexed: 01/09/2023]
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Halici Z, Polat B, Cadirci E, Topcu A, Karakus E, Kose D, Albayrak A, Bayir Y. Inhibiting renin angiotensin system in rate limiting step by aliskiren as a new approach for preventing indomethacin induced gastric ulcers. Chem Biol Interact 2016; 258:266-75. [DOI: 10.1016/j.cbi.2016.09.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 09/07/2016] [Accepted: 09/15/2016] [Indexed: 01/01/2023]
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Schneider EH, Seifert R. The histamine H4-receptor and the central and peripheral nervous system: A critical analysis of the literature. Neuropharmacology 2016; 106:116-28. [PMID: 25986697 DOI: 10.1016/j.neuropharm.2015.05.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 12/22/2022]
Abstract
Expression and function of histamine H4R in central and peripheral nervous system have been a matter of controversy for more than a decade. The scientific discussion is often limited to a few publications postulating the presence of functional H4R on neurons of the central and peripheral nervous system, but the even larger number of reports showing negative data is often neglected. In this article, we critically review the existing literature on H4R in central and peripheral nervous system and discuss the weak points often overlooked by the community. We identified as most important problems (i) insufficient validation or quality of antibodies, (ii) missing knockout controls, (iii) uncritical interpretation of RT-PCR results instead of qPCR experiments, (iv) insufficient controls to confirm specificity of pharmacological tools, (v) uncritical reliance on results produced by a single method and (vi) uncritical reliance on results not reproduced by independent research groups. Additionally, there may be a publication as well as a citation bias favoring the awareness of positive results, but neglecting negative data. We conclude that H4R expression on neurons of the brain is not convincingly supported by the current literature, at least as long as the positive data are not reproduced by independent research groups. Expression and function of H4R on peripheral neurons or non-neuronal cells of the nervous system, specifically on microglia is an interesting alternative hypothesis that, however, requires further verification. This article is part of a Special Issue entitled 'Histamine Receptors'.
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Affiliation(s)
- Erich H Schneider
- Institute of Pharmacology, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.
| | - Roland Seifert
- Institute of Pharmacology, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
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Yu L, Zhang XY, Cao SL, Peng SY, Ji DY, Zhu JN, Wang JJ. Na(+) -Ca(2+) Exchanger, Leak K(+) Channel and Hyperpolarization-Activated Cyclic Nucleotide-Gated Channel Comediate the Histamine-Induced Excitation on Rat Inferior Vestibular Nucleus Neurons. CNS Neurosci Ther 2015; 22:184-93. [PMID: 26387685 DOI: 10.1111/cns.12451] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/11/2015] [Accepted: 08/14/2015] [Indexed: 12/11/2022] Open
Abstract
AIMS Antihistaminergic drugs have traditionally been used to treat vestibular disorders in the clinic. As a potential central target for antihistaminergic drugs, the inferior vestibular nucleus (IVN) is the largest subnucleus of the central vestibular nuclear complex and is considered responsible for vestibular-autonomic responses and integration of vestibular, cerebellar, and multisensory signals. However, the role of histamine on the IVN, particularly the underlying mechanisms, is still not clear. METHODS Using whole-cell patch-clamp recordings on rat brain slices, histamine-induced effect on IVN neurons and the underlying receptor and ionic mechanisms were investigated. RESULTS We found that histamine remarkably depolarized both spontaneous firing neurons and silent neurons in IVN via both histamine H1 and histamine H2 receptors. Furthermore, Na(+) -Ca(2+) exchangers (NCXs) and background leak K(+) channels linked to H1 receptors and hyperpolarization-activated cyclic nucleotide-gated (HCN) channels coupled to H2 receptors comediate the histamine-induced depolarization on IVN neurons. CONCLUSION These results demonstrate the multiple ionic mechanisms underlying the excitatory modulation of histamine/central histaminergic system on IVN neurons and the related vestibular reflexes and functions. The findings also suggest potential targets for the treatment of vestibular disorders in the clinic, at the level of ionic channels in central vestibular nuclei.
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Affiliation(s)
- Lei Yu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xiao-Yang Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Shu-Liang Cao
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Shi-Yu Peng
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Deng-Yu Ji
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Jing-Ning Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Jian-Jun Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biological Science and Technology, School of Life Sciences, Nanjing University, Nanjing, China
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