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Sharma A, Muresanu DF, Patnaik R, Menon PK, Tian ZR, Sahib S, Castellani RJ, Nozari A, Lafuente JV, Buzoianu AD, Skaper SD, Bryukhovetskiy I, Manzhulo I, Wiklund L, Sharma HS. Histamine H3 and H4 receptors modulate Parkinson's disease induced brain pathology. Neuroprotective effects of nanowired BF-2649 and clobenpropit with anti-histamine-antibody therapy. PROGRESS IN BRAIN RESEARCH 2021; 266:1-73. [PMID: 34689857 DOI: 10.1016/bs.pbr.2021.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Military personnel deployed in combat operations are highly prone to develop Parkinson's disease (PD) in later lives. PD largely involves dopaminergic pathways with hallmarks of increased alpha synuclein (ASNC), and phosphorylated tau (p-tau) in the cerebrospinal fluid (CSF) precipitating brain pathology. However, increased histaminergic nerve fibers in substantia nigra pars Compacta (SNpc), striatum (STr) and caudate putamen (CP) associated with upregulation of Histamine H3 receptors and downregulation of H4 receptors in human cases of PD is observed in postmortem cases. These findings indicate that modulation of histamine H3 and H4 receptors and/or histaminergic transmission may induce neuroprotection in PD induced brain pathology. In this review effects of a potent histaminergic H3 receptor inverse agonist BF-2549 or clobenpropit (CLBPT) partial histamine H4 agonist with H3 receptor antagonist, in association with monoclonal anti-histamine antibodies (AHmAb) in PD brain pathology is discussed based on our own observations. Our investigation shows that chronic administration of conventional or TiO2 nanowired BF 2649 (1mg/kg, i.p.) or CLBPT (1mg/kg, i.p.) once daily for 1 week together with nanowired delivery of HAmAb (25μL) significantly thwarted ASNC and p-tau levels in the SNpC and STr and reduced PD induced brain pathology. These observations are the first to show the involvement of histamine receptors in PD and opens new avenues for the development of novel drug strategies in clinical strategies for PD, not reported earlier.
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Affiliation(s)
- Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| | - Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania; "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Ranjana Patnaik
- Department of Biomaterials, School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| | - Preeti K Menon
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Seaab Sahib
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Rudy J Castellani
- Department of Pathology, University of Maryland, Baltimore, MD, United States
| | - Ala Nozari
- Anesthesiology & Intensive Care, Massachusetts General Hospital, Boston, MA, United States
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Anca D Buzoianu
- Department of Clinical Pharmacology and Toxicology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Stephen D Skaper
- Anesthesiology & Intensive Care, Department of Pharmacology, University of Padua, Padova, Italy
| | - Igor Bryukhovetskiy
- Department of Fundamental Medicine, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia; Laboratory of Pharmacology, National Scientific Center of Marine Biology, Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Igor Manzhulo
- Laboratory of Pharmacology, National Scientific Center of Marine Biology, Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
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Atalay F, Odabasoglu F, Halici M, Cadirci E, Aydin O, Halici Z, Cakir A. N-Acetyl Cysteine Has Both Gastro-Protective and Anti-Inflammatory Effects in Experimental Rat Models: Its Gastro-Protective Effect Is Related to Its In Vivo and In Vitro Antioxidant Properties. J Cell Biochem 2015; 117:308-19. [DOI: 10.1002/jcb.25193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 04/09/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Fadime Atalay
- Department of Medical Biochemistry, Faculty of Medicine; Kafkas University; Kars 36100 Turkey
| | - Fehmi Odabasoglu
- Department of Medical Biochemistry, Faculty of Medicine; Kafkas University; Kars 36100 Turkey
| | - Mesut Halici
- Department of Biochemistry, Faculty of Veterinary; Ataturk University; Erzurum 25240 Turkey
| | - Elif Cadirci
- Department of Pharmacology, Faculty of Pharmacy; Ataturk University; Erzurum 25240 Turkey
| | - Ozlem Aydin
- Department of Biochemistry, Faculty of Pharmacy; Ataturk University; Erzurum 25240 Turkey
| | - Zekai Halici
- Department of Pharmacology, Faculty of Medicine; Ataturk University; Erzurum 25240 Turkey
| | - Ahmet Cakir
- Department of Chemistry, Faculty of Science and Art; Kilis 7 Aralık University; Kilis 79100 Turkey
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Jain NS, Tandi L, Verma L. Contribution of the central histaminergic transmission in the cataleptic and neuroleptic effects of haloperidol. Pharmacol Biochem Behav 2015; 139:59-66. [DOI: 10.1016/j.pbb.2015.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 09/16/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
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Yavari I, Nematpour M, Damghani T. Copper-catalyzed S-arylation of tetramethylguanidine–heterocumulene adducts. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Samotaeva IS, Birioukova LM, Midzyanovskaya IS, Kuznetsova GD, Bazyan AS, Tuomisto L. Metoprine induced behavioral modifications and brain regional histamine increase in WAG/Rij and Wistar rats. Epilepsy Res 2012; 101:148-56. [DOI: 10.1016/j.eplepsyres.2012.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 03/05/2012] [Accepted: 03/19/2012] [Indexed: 11/26/2022]
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6
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Effects of harmane and other β-carbolines on apomorphine-induced licking behavior in rat. Pharmacol Biochem Behav 2011; 98:215-9. [DOI: 10.1016/j.pbb.2011.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 12/28/2010] [Accepted: 01/05/2011] [Indexed: 11/21/2022]
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7
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Nowak P, Noras Ł, Jochem J, Szkilnik R, Brus H, Körőssy E, Drab J, Kostrzewa RM, Brus R. Histaminergic Activity in a Rodent Model of Parkinson’s Disease. Neurotox Res 2009; 15:246-51. [DOI: 10.1007/s12640-009-9025-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 09/11/2008] [Accepted: 09/11/2008] [Indexed: 11/30/2022]
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Nowak P, Bortel A, Dabrowska J, Biedka I, Slomian G, Roczniak W, Kostrzewa RM, Brus R. Histamine H3 receptor ligands modulate L-dopa-evoked behavioral responses and L-dopa-derived extracellular dopamine in dopamine-denervated rat striatum. Neurotox Res 2008; 13:231-40. [DOI: 10.1007/bf03033506] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Dengiz GO, Odabasoglu F, Halici Z, Cadirci E, Suleyman H. Gastroprotective and antioxidant effects of montelukast on indomethacin-induced gastric ulcer in rats. J Pharmacol Sci 2007; 105:94-102. [PMID: 17895592 DOI: 10.1254/jphs.fp0070122] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Montelukast, a selective reversible cysteinyl leukotriene D(4)-receptor (LTD(4) receptor) antagonist, is used in the treatment of asthma. We have investigated alterations in the glutathione (GSH) and activity levels of antioxidative enzymes [superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione reductase (GR)] and myeloperoxidase (MPO), as markers of the ulceration process following oral administration of montelukast, lansoprazole, famotidine, and ranitidine, respectively, in rats with indomethacin-induced ulcers. In the present study, we found that 1) montelukast, lansoprazole, famotidine, and ranitidine all reduced the development of indomethacin-induced gastric damage, with this reduction occurring at a greater magnitude for montelukast, famotidine, and lansoprazole than for ranitidine; 2) montelukast and ranitidine both alleviated increases in the activity levels of CAT and GST enzymes resulting from gastric injury; 3) montelukast and ranitidine both ameliorated depressions in the GSH and activity levels of SOD and GR enzymes caused by indomethacin administration; and 4) all doses of montelukast, lansoprazole, and ranitidine decreased amplification of MPO activity resulting from induced gastric injuries. These results suggest that the gastroprotective effects of montelukast on indomethacin-induced ulcerations can be attributed to its ameliorating effect on oxidative damage and MPO activity.
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Farzin D, Nosrati F. Modification of formalin-induced nociception by different histamine receptor agonists and antagonists. Eur Neuropsychopharmacol 2007; 17:122-8. [PMID: 16631358 DOI: 10.1016/j.euroneuro.2006.03.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2005] [Revised: 02/17/2006] [Accepted: 03/07/2006] [Indexed: 10/24/2022]
Abstract
The present study evaluated the effects of different histamine receptor agonists and antagonists on the nociceptive response in the mouse formalin test. Intracerebroventricular (20-40 microg/mouse i.c.v.) or subcutaneous (1-10 mg/kg s.c.) injection of HTMT (H(1) receptor agonist) elicited a dose-related hyperalgesia in the early and late phases. Conversely, intraperitoneal (20 and 30 mg/kg i.p.) injection of dexchlorpheniramine (H(1) receptor antagonist) was antinociceptive in both phases. At a dose ineffective per se, dexchlorpheniramine (10 mg/kg i.p.) antagonized the hyperalgesia induced by HTMT (40 mug/mouse i.c.v. or 10 mg/kg s.c.). Dimaprit (H(2) receptor agonist, 30 mg/kg i.p.) and ranitidine (H(2) receptor antagonist, 20 and 40 mg/kg i.p.) reduced the nociceptive responses in the early and late phases. No significant change in the antinociceptive activity was found following the combination of dimaprit (30 mg/kg i.p.) with ranitidine (10 mg/kg i.p.). The antinociceptive effect of dimaprit (30 mg/kg i.p.) was prevented by naloxone (5 mg/kg i.p.) in the early phase or by imetit (H(3) receptor agonist, 25 mg/kg i.p.) in both early and late phases. The histamine H(3) receptor agonist imetit was hyperalgesic following i.p. administration of 50 mg/kg. Imetit-induced hyperalgesia was completely prevented by treatment with a dose ineffective per se of thioperamide (H(3) receptor antagonist, 5 mg/kg i.p.). The results suggest that histamine H(1) and H(3) receptor activations increase sensitivity to nociceptive stimulus in the formalin test.
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Affiliation(s)
- Davood Farzin
- Department of Pharmacology, School of Medicine, Mazandaran University of Medical Sciences, 48168 Sari, Iran.
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Nowak P, Dabrowska J, Bortel A, Biedka I, Szczerbak G, Słomian G, Kostrzewa RM, Brus R. Histamine H3 receptor agonist- and antagonist-evoked vacuous chewing movements in 6-OHDA-lesioned rats occurs in an absence of change in microdialysate dopamine levels. Eur J Pharmacol 2006; 552:46-54. [PMID: 17055481 DOI: 10.1016/j.ejphar.2006.08.092] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Revised: 07/20/2006] [Accepted: 08/04/2006] [Indexed: 10/24/2022]
Abstract
In rats lesioned neonatally with 6-hydroxydopamine (6-OHDA), repeated treatment with SKF 38393 (1-phenyl-2,3,4,5-tetrahydro-(1H)-3-benzazepine-7,8-diol), a dopamine D(1)/D(5) receptor agonist, produces robust stereotyped and locomotor activities. The gradual induction of dopamine D(1) receptor supersensitivity is known as a priming phenomenon, and this process is thought to underlie not only the appearance of vacuous chewing movements in humans with tardive dyskinesia, but also the onset of motor dyskinesias in L-dihydroxyphenylalanine (L-DOPA)-treated Parkinson's disease patients. The object of the present study was to determine the possible influence of the histaminergic system on dopamine D(1) agonist-induced activities. We found that neither imetit (5.0 mg/kg i.p.), a histamine H(3) receptor agonist, nor thioperamide (5.0 mg/kg i.p.), a histamine H(3) receptor antagonist/inverse agonist, altered the numbers of vacuous chewing movements in non-primed-lesioned rats. However, in dopamine D(1) agonist-primed rats, thioperamide alone produced a vacuous chewing movements response (i.e., P < 0.05 vs SKF 38393, 1.0 mg/kg i.p.), but did not modify the SKF 38393 effect. Notably, both imetit and thioperamide-induced catalepsy in both non-primed and primed 6-OHDA-lesioned rats, comparable in magnitude to the effect of the dopamine D(1)/D(5) receptor antagonist SCH 23390 (7-chloro-8-hydroxy-3-methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine; 0.5 mg/kg i.p.). Furthermore, in primed animals both imetit and thioperamide intensified SCH 23390-evoked catalepsy. In vivo microdialysis established that neither imetit nor thioperamide altered extraneuronal levels of dopamine and its metabolites in the striatum of 6-OHDA-lesioned rats. On the basis of the present study, we believe that histaminergic systems may augment dyskinesias induced by dopamine receptor agonists, independent of direct actions on dopaminergic neurons.
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Affiliation(s)
- Przemysław Nowak
- Department of Pharmacology, Medical University of Silesia, H. Jordana 38, 41-808 Zabrze, Poland.
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Alkylation of ethylenethiourea with alcohols: a convenient synthesis of S-alkyl-isothioureas without toxic alkylating agents. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.150] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Brabant C, Charlier Y, Quertemont E, Tirelli E. The H3 antagonist thioperamide reveals conditioned preference for a context associated with an inactive small dose of cocaine in C57BL/6J mice. Behav Brain Res 2005; 160:161-8. [PMID: 15836911 DOI: 10.1016/j.bbr.2004.11.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2004] [Revised: 11/16/2004] [Accepted: 11/25/2004] [Indexed: 10/25/2022]
Abstract
The histaminergic system has been speculated to be involved in the inhibitory control of drug reward, H1 and H2 antagonists having been found to potentiate conditioned place preference induced by morphine or cocaine. In contrast, the role of H3 receptors in cocaine-induced place preference is still unknown. The present study tested the effects of thioperamide (0, 10 and 20 mg/kg, i.p.), an H3 autoreceptor antagonist, on the development of a conditioned place preference induced by cocaine (0, 2 and 8 mg/kg, i.p.) in C57BL/6J mice. Thioperamide was injected 10 min before each cocaine-pairing session. The activity scores recorded on the first cocaine-pairing session were also used to test the effects of thioperamide on cocaine-induced locomotor activity. Thioperamide alone had no reinforcing effects and did not affect the conditioned place preference induced by 8 mg/kg cocaine. However, thioperamide dose-dependently revealed a conditioned place preference induced by 2 mg/kg cocaine, a dose that was inactive per se. Finally, thioperamide dose-dependently potentiated the stimulant effects of cocaine, in spite of its slight hypolocomotor effect when given alone. Our results strongly suggest that H3 antagonists potentiate the stimulant and reinforcing effects of cocaine in mice.
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Affiliation(s)
- Christian Brabant
- Behavioural Neuroscience and Psychopharmacology Laboratory, University of Liège, Liège, Belgium
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Cannon KE, Nalwalk JW, Stadel R, Ge P, Lawson D, Silos-Santiago I, Hough LB. Activation of spinal histamine H3 receptors inhibits mechanical nociception. Eur J Pharmacol 2003; 470:139-47. [PMID: 12798951 DOI: 10.1016/s0014-2999(03)01737-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Previous studies have suggested a possible pain-modulatory role for histamine H(3) receptors, but the localization of these receptors and nature of this modulation is not clear. In order to explore the role of spinal histamine H(3) receptors in the inhibition of nociception, the effects of systemically (subcutaneous, s.c.) and intrathecally (i.t.) administered histamine H(3) receptor agonists were studied in rats and mice. Immepip (5 mg/kg, s.c.) produced robust antinociception in rats on a mechanical (tail pinch) test but did not alter nociceptive responses on a thermal (tail flick) test. In contrast, this treatment in mice (immepip, 5 and 30 mg/kg, s.c.) did not change either mechanically or thermally evoked nociceptive responses. When administered directly into the spinal subarachnoid space, immepip (15-50 microg, i.t.) and R-alpha-methylhistamine (50 microg, i.t.) had no effect in rats on the tail flick and hot plate tests, but produced a dose- and time-dependent inhibition (90-100%) of nociceptive responses on the tail pinch test. This attenuation was blocked by administration of thioperamide (10 mg/kg, s.c.), a histamine H(3) receptor antagonist. Intrathecally administered thioperamide also reversed antinociceptive responses induced by systemically administered immepip, which demonstrates a spinal site of action for the histamine H(3) receptor agonist. In addition, intrathecally administered immepip (25 microg) produced maximal antinociception on the tail pinch test in wild type, but not in histamine H(3) receptor knockout (H(3)KO) mice. These findings demonstrate an antinociceptive role for spinal histamine H(3) receptors. Further studies are needed to confirm the existence of modality-specific (i.e. mechanical vs. thermal) inhibition of nociception by these receptors, and to assess the efficacy of spinally delivered histamine H(3) receptor agonists for the treatment for pain.
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Affiliation(s)
- Keri E Cannon
- Center for Neuropharmacology and Neuroscience, Albany Medical College MC-136, 47 New Scotland Ave., Albany, NY 12206, USA
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Shen B, Li HZ, Wang JJ. Excitatory effects of histamine on cerebellar interpositus nuclear cells of rats through H(2) receptors in vitro. Brain Res 2002; 948:64-71. [PMID: 12383956 DOI: 10.1016/s0006-8993(02)02950-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Neuroanatomical studies have revealed a direct hypothalamocerebellar histaminergic pathway, and our previous studies have demonstrated an excitatory effect of histamine on granule and Purkinje cells of the cerebellar cortex. In this study, we further investigated the effect of histamine on the neuronal firing of cerebellar interpositus nucleus (IN) by using cerebellar slice preparations. Eighty-seven IN cells were recorded from 38 slices. The vast majority of the cells responded to histamine stimulation with an excitatory response (79/87, 90.8%), and the rest of them showed no reaction (8/87, 9.2%). The histamine-induced excitation was not blocked by application of low-Ca(2+)/high-Mg(2+) medium (n=8), supporting a direct postsynaptic action of histamine. The histamine H(2) receptor antagonist ranitidine effectively blocked the excitatory response of IN cells to histamine (n=23), but the histamine H(1) receptor antagonist triprolidine could not significantly block the histamine-induced excitation, or only very slightly decreased the excitatory effect of histamine on the cells (n=21). On the other hand, the highly selective histamine H(2) receptor agonist dimaprit mimicked the excitatory effect of histamine on IN cells and the dimaprit-induced excitation was also blocked by ranitidine (n=14). Successively perfusing slices with the medium containing ranitidine and triprolidine, respectively, we found that ranitidine exhibited the same blocking effect on the dimaprit-induced excitation, but triprolidine had no such effect (n=8). Moreover, the histamine H(1) receptor agonist 2-pyridylethylamine did not show any effect on the IN cells (n=9). These results demonstrate that histamine excites cerebellar IN cells via the histamine H(2) receptor mechanism. Together with our previous results, we suggest that the hypothalamocerebellar histaminergic fibers may modulate neuronal activities of the cerebellar cortex and deep nuclei in parallel. The significance of the excitatory effect of histamine on the cerebellar nuclear cells is discussed.
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Affiliation(s)
- Bin Shen
- Department of Biological Science and Technology, Nanjing University, 22 Hankou Road, Nanjing 210093, China
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Farzin D, Asghari L, Nowrouzi M. Rodent antinociception following acute treatment with different histamine receptor agonists and antagonists. Pharmacol Biochem Behav 2002; 72:751-60. [PMID: 12175473 DOI: 10.1016/s0091-3057(02)00748-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The effects of different histamine receptor agonists and antagonists on the nociceptive threshold were investigated in mice by two different kinds of noxious stimuli: thermal (hot plate) and chemical (acetic acid-induced abdominal writhing). Intracerebroventricular (icv) injection of the histamine H(1) receptor agonist, HTMT (6-[2-(4-imidazolyl)ethylamino]-N-(4-trifluoromethylphenyl) heptanecarboxamide) (50 microg/mouse), produced a hypernociception in the hot plate and writhing tests. Conversely, intraperitoneal (ip) injection of dexchlorpheniramine (30 and 40 mg/kg) and diphenhydramine (20 and 40 mg/kg) increased the pain threshold in both tests. The histamine H(2) receptor agonist, dimaprit (50 and 100 microg/mouse icv), or antagonist, ranitidine (50 and 100 microg/mouse icv), raised the pain threshold in both hot plate and writhing tests. In the mouse hot plate test, the histamine H(3) receptor agonist, imetit (50 mg/kg ip), reduced the pain threshold, while the histamine H(3) receptor antagonist, thioperamide (10 and 20 mg/kg ip), produced an antinociception. The hypernociceptive effects of HTMT and imetit were antagonized by dexchlorpheniramine (20 mg/kg ip) and thioperamide (5 mg/kg ip), respectively. The results suggest that histaminergic mechanisms may be involved in the modulation of nociceptive stimuli.
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Affiliation(s)
- Davood Farzin
- Department of Pharmacology, School of Medicine, Mazandaran University of Medical Sciences, Sari 48168, Iran.
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