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Lin CC, Yang CP, Cheng PY, Hsiao M, Liu YP. Escitalopram reversibility of the impacts following chronic stress on central 5-HT profiles - Implications to depression and anxiety. Behav Brain Res 2023; 453:114613. [PMID: 37544369 DOI: 10.1016/j.bbr.2023.114613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Stress is considered a crucial determinant influencing health capacity in modern society. Long-term stress makes individuals more susceptible to mental dysfunctions, among which depression and anxiety are two major mental disorders. The success of using selective serotonin reuptake inhibitors (SSRIs) to treat these two disorders highlights the involvement of the central serotonergic (5-HT) system. Later studies suggest both presynaptic and postsynaptic 5-HT profiles should be considered for the effects of SSRIs, making it difficult to interpret the etiological and therapeutic mechanisms underlying depression and anxiety. The present study aims to examine whether the intervention of escitalopram (Es, 5 mg/kg daily for 14 days) can reverse the behavioral phenotypes of both depression-like [by sucrose preference test (SPT) and forced swim test (FST)] and anxiety-like [by avoidance latency and escape latency in elevated-T maze (ETM)] behaviors, and the brain area-dependent neurochemical changes of 5-HT profiles of the terminal regions regarding both synaptic efflux and tissue levels in rats of chronic mild stress (CMS). Our results showed that: (i) Even mild stresses when presented in an unpredictable and long-term manner, can induce both depression-like and anxiety-like behaviors. (ii) Depressive profile indexed by SPT was more sensitive to reflect the Es effect than that of FST. (iii) Es did not significantly affect the CMS-induced anxiety-like symptoms indexed by ETM. (iv) Changes in the protein expression of 5-HT1A receptors in the prefrontal cortex and hippocampus were compatible with the treatment outcome. Our results contributed to the understanding of stress-induced mood dysfunction and the involvement of central 5-HT.
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Affiliation(s)
- Chen-Cheng Lin
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Genomics Research Center, Academia Sinica, Taipei, Taiwan; Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Chiu-Ping Yang
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Pao-Yun Cheng
- Department of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Yia-Ping Liu
- Laboratory of Cognitive Neuroscience, Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Department of Physiology, National Defense Medical Center, Taipei, Taiwan; Department of Psychiatry, Cheng Hsin General Hospital, Taipei, Taiwan.
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2
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de Bartolomeis A, Vellucci L, Barone A, Manchia M, De Luca V, Iasevoli F, Correll CU. Clozapine's multiple cellular mechanisms: What do we know after more than fifty years? A systematic review and critical assessment of translational mechanisms relevant for innovative strategies in treatment-resistant schizophrenia. Pharmacol Ther 2022; 236:108236. [PMID: 35764175 DOI: 10.1016/j.pharmthera.2022.108236] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 12/21/2022]
Abstract
Almost fifty years after its first introduction into clinical care, clozapine remains the only evidence-based pharmacological option for treatment-resistant schizophrenia (TRS), which affects approximately 30% of patients with schizophrenia. Despite the long-time experience with clozapine, the specific mechanism of action (MOA) responsible for its superior efficacy among antipsychotics is still elusive, both at the receptor and intracellular signaling level. This systematic review is aimed at critically assessing the role and specific relevance of clozapine's multimodal actions, dissecting those mechanisms that under a translational perspective could shed light on molecular targets worth to be considered for further innovative antipsychotic development. In vivo and in vitro preclinical findings, supported by innovative techniques and methods, together with pharmacogenomic and in vivo functional studies, point to multiple and possibly overlapping MOAs. To better explore this crucial issue, the specific affinity for 5-HT2R, D1R, α2c, and muscarinic receptors, the relatively low occupancy at dopamine D2R, the interaction with receptor dimers, as well as the potential confounder effects resulting in biased ligand action, and lastly, the role of the moiety responsible for lipophilic and alkaline features of clozapine are highlighted. Finally, the role of transcription and protein changes at the synaptic level, and the possibility that clozapine can directly impact synaptic architecture are addressed. Although clozapine's exact MOAs that contribute to its unique efficacy and some of its severe adverse effects have not been fully understood, relevant information can be gleaned from recent mechanistic understandings that may help design much needed additional therapeutic strategies for TRS.
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Affiliation(s)
- Andrea de Bartolomeis
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy.
| | - Licia Vellucci
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Annarita Barone
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Mirko Manchia
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy; Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Felice Iasevoli
- Section of Psychiatry, Laboratory of Translational and Molecular Psychiatry and Unit of Treatment Resistant Psychosis, Department of Neuroscience, Reproductive Science and Dentistry, University Medical School of Naples "Federico II", Naples, Italy
| | - Christoph U Correll
- The Zucker Hillside Hospital, Department of Psychiatry, Northwell Health, Glen Oaks, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Department of Psychiatry and Molecular Medicine, Hempstead, NY, USA; Charité Universitätsmedizin Berlin, Department of Child and Adolescent Psychiatry, Berlin, Germany
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Zerimech S, Chever O, Scalmani P, Pizzamiglio L, Duprat F, Mantegazza M. Cholinergic modulation inhibits cortical spreading depression in mouse neocortex through activation of muscarinic receptors and decreased excitatory/inhibitory drive. Neuropharmacology 2020; 166:107951. [PMID: 31945385 DOI: 10.1016/j.neuropharm.2020.107951] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/06/2020] [Accepted: 01/09/2020] [Indexed: 12/20/2022]
Abstract
Cortical spreading depression (CSD) is a wave of transient network hyperexcitability leading to long lasting depolarization and block of firing, which initiates focally and slowly propagates in the cerebral cortex. It causes migraine aura and it has been implicated in the generation of migraine headache. Cortical excitability can be modulated by cholinergic actions, leading in neocortical slices to the generation of rhythmic synchronous activities (UP/DOWN states). We investigated the effect of cholinergic activation with the cholinomimetic agonist carbachol on CSD triggered with 130 mM KCl pulse injections in acute mouse neocortical brain slices, hypothesizing that the cholinergic-induced increase of cortical network excitability during UP states could facilitate CSD. We observed instead an inhibitory effect of cholinergic activation on both initiation and propagation of CSD, through the action of muscarinic receptors. In fact, carbachol-induced CSD inhibition was blocked by atropine or by the preferential M1 muscarinic antagonist telenzepine; the preferential M1 muscarinic agonist McN-A-343 inhibited CSD similarly to carbachol, and its effect was blocked by telenzepine. Recordings of spontaneous excitatory and inhibitory post-synaptic currents in pyramidal neurons showed that McN-A-343 induced overall a decrease of the excitatory/inhibitory ratio. This inhibitory action may be targeted for novel pharmacological approaches in the treatment of migraine with muscarinic agonists.
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Affiliation(s)
- Sarah Zerimech
- Université Côte d'Azur, Valbonne-Sophia Antipolis, France; CNRS UMR7275, Institute of Molecular and Cellular Pharmacology (IPMC), Valbonne-Sophia Antipolis, France
| | - Oana Chever
- Université Côte d'Azur, Valbonne-Sophia Antipolis, France; CNRS UMR7275, Institute of Molecular and Cellular Pharmacology (IPMC), Valbonne-Sophia Antipolis, France
| | - Paolo Scalmani
- U.O. VII Clinical Epileptology and Experimental Neurophysiology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Lara Pizzamiglio
- Université Côte d'Azur, Valbonne-Sophia Antipolis, France; CNRS UMR7275, Institute of Molecular and Cellular Pharmacology (IPMC), Valbonne-Sophia Antipolis, France
| | - Fabrice Duprat
- Université Côte d'Azur, Valbonne-Sophia Antipolis, France; CNRS UMR7275, Institute of Molecular and Cellular Pharmacology (IPMC), Valbonne-Sophia Antipolis, France; Inserm, Valbonne-Sophia Antipolis, France
| | - Massimo Mantegazza
- Université Côte d'Azur, Valbonne-Sophia Antipolis, France; CNRS UMR7275, Institute of Molecular and Cellular Pharmacology (IPMC), Valbonne-Sophia Antipolis, France; Inserm, Valbonne-Sophia Antipolis, France.
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4
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Tian L, Liu X, Mei X, Cui R, Li X. The role of dopamine D1- and D2-like receptors related to muscarinic M1 receptors in impulsive choice in high-impulsive and low-impulsive rats. Pharmacol Biochem Behav 2019; 176:43-52. [DOI: 10.1016/j.pbb.2018.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 10/10/2018] [Accepted: 11/12/2018] [Indexed: 12/31/2022]
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Huang M, Kwon S, Rajagopal L, He W, Meltzer HY. 5-HT 1A parital agonism and 5-HT 7 antagonism restore episodic memory in subchronic phencyclidine-treated mice: role of brain glutamate, dopamine, acetylcholine and GABA. Psychopharmacology (Berl) 2018; 235:2795-2808. [PMID: 30066135 DOI: 10.1007/s00213-018-4972-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 07/11/2018] [Indexed: 12/12/2022]
Abstract
RATIONALE The effect of atypical antipsychotic drugs (AAPDs), e.g., lurasidone, to improve cognitive impairment associated with schizophrenia (CIAS), has been suggested to be due, in part, to enhancing release of dopamine (DA), acetylcholine (ACh), and glutamate (Glu) in cortex and hippocampus. RESULTS The present study found acute lurasidone reversed the cognitive deficit in novel object recognition (NOR) in subchronic (sc) phencyclidine (PCP)-treated mice, an animal model for CIAS. This effect of lurasidone was blocked by pretreatment with the 5-HT1AR antagonist, WAY-100635, or the 5-HT7R agonist, AS 19. Lurasidone significantly increased medial prefrontal cortex (mPFC) ACh, DA, and Glu efflux, all of which were blocked by WAY-100635, with similar effects in the dorsal striatum (dSTR), except for the absence of an effect on Glu increase. AS 19 inhibited Glu, but not DA efflux, in the dSTR. The selective 5-HT7R antagonist, SB-26970, increased mPFC DA, 5-HT, Glu, and, importantly, also GABA efflux and striatal DA, NE, 5-HT, and Glu efflux, indicating tonic inhibition of the release of these neurotransmitters by 5-HT7R stimulation. These results provide new evidence that GABA release in the mPFC is tonically inhibited by 5-HT7R stimulation and suggest that a selective 5-HT7R antagonist might be clinically useful to enhance cortical GABAergic release. All SB-269970 effects were blocked by AS 19 or WAY-100635, suggesting 5-HT1AR agonism is necessary for the release of these neurotransmitters by SB-269970. Lurasidone increased ACh, DA, and NE but not Glu efflux in mPFC and dSTR DA and Glu efflux in 5-HT7 KO mice. CONCLUSION We conclude that lurasidone-induced Glu efflux in mPFC requires 5-HT7R antagonism while its effects on cortical ACh and DA efflux are mainly due to 5-HT1AR stimulation.
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Affiliation(s)
- Mei Huang
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, 303 E. Chicago Ave., Ward Building 7-014, Chicago, IL, 60611, USA
| | - Sunoh Kwon
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, 303 E. Chicago Ave., Ward Building 7-014, Chicago, IL, 60611, USA.,K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, 34054, Republic of Korea
| | - Lakshmi Rajagopal
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, 303 E. Chicago Ave., Ward Building 7-014, Chicago, IL, 60611, USA
| | - Wenqi He
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, 303 E. Chicago Ave., Ward Building 7-014, Chicago, IL, 60611, USA
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, 303 E. Chicago Ave., Ward Building 7-014, Chicago, IL, 60611, USA.
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Thompson KJ, Khajehali E, Bradley SJ, Navarrete JS, Huang XP, Slocum S, Jin J, Liu J, Xiong Y, Olsen RHJ, Diberto JF, Boyt KM, Pina MM, Pati D, Molloy C, Bundgaard C, Sexton PM, Kash TL, Krashes MJ, Christopoulos A, Roth BL, Tobin AB. DREADD Agonist 21 Is an Effective Agonist for Muscarinic-Based DREADDs in Vitro and in Vivo. ACS Pharmacol Transl Sci 2018; 1:61-72. [PMID: 30868140 PMCID: PMC6407913 DOI: 10.1021/acsptsci.8b00012] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Indexed: 02/07/2023]
Abstract
![]()
Chemogenetic tools such as designer
receptors exclusively activated
by designer drugs (DREADDs) are routinely used to modulate neuronal
and non-neuronal signaling and activity in a relatively noninvasive
manner. The first generation of DREADDs were templated from the human
muscarinic acetylcholine receptor family and are relatively insensitive
to the endogenous agonist acetylcholine but instead are activated
by clozapine-N-oxide (CNO). Despite the undisputed
success of CNO as an activator of muscarinic DREADDs, it has been
known for some time that CNO is subject to a low rate of metabolic
conversion to clozapine, raising the need for alternative chemical
actuators of muscarinic-based DREADDs. Here we show that DREADD agonist 21 (C21) (11-(1-piperazinyl)-5H-dibenzo[b,e][1,4]diazepine)
is a potent and selective agonist at both excitatory (hM3Dq) and inhibitory
(hM4Di) DREADDs and has excellent bioavailability, pharmacokinetic
properties, and brain penetrability. We also show that C21-induced
activation of hM3Dq and hM4Di in vivo can modulate
bidirectional feeding in defined circuits in mice. These results indicate
that C21 represents an alternative to CNO for in vivo studies where metabolic conversion of CNO to clozapine is a concern.
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Affiliation(s)
- Karen J Thompson
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Elham Khajehali
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Sophie J Bradley
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Jovana S Navarrete
- Diabetes, Endocrinology, and Obesity Branch, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States.,National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224, United States
| | - Xi Ping Huang
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Samuel Slocum
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Jian Jin
- Center for Chemical Biology and Drug Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY10029, United States
| | - Jing Liu
- Center for Chemical Biology and Drug Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY10029, United States
| | - Yan Xiong
- Center for Chemical Biology and Drug Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY10029, United States
| | - Reid H J Olsen
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Jeffrey F Diberto
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Kristen M Boyt
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Melanie M Pina
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Dipanwita Pati
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Colin Molloy
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Christoffer Bundgaard
- Neuroscience, Eli Lilly & Co., Erl Wood Manor, Windlesham, Surrey GU20 6PH, United Kingdom
| | - Patrick M Sexton
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Thomas L Kash
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Michael J Krashes
- Diabetes, Endocrinology, and Obesity Branch, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States.,National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224, United States
| | - Arthur Christopoulos
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Bryan L Roth
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, North Carolina NC2751, United States
| | - Andrew B Tobin
- Centre for Translational Pharmacology, Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
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He N, Mao LM, Sturich AW, Jin DZ, Wang JQ. Inhibition of basal and amphetamine-stimulated extracellular signal-regulated kinase (ERK) phosphorylation in the rat forebrain by muscarinic acetylcholine M4 receptors. Brain Res 2018; 1688:103-112. [PMID: 29577888 PMCID: PMC5903569 DOI: 10.1016/j.brainres.2018.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 03/05/2018] [Accepted: 03/14/2018] [Indexed: 01/06/2023]
Abstract
The mitogen-activated protein kinase (MAPK), especially its extracellular signal-regulated kinase (ERK) subfamily, is a group of kinases enriched in the mammalian brain. While ERK is central to cell signaling and neural activities, the regulation of ERK by transmitters is poorly understood. In this study, the role of acetylcholine in the regulation of ERK was investigated in adult rat striatum in vivo. We focused on muscarinic M1 and M4 receptors, two principal muscarinic acetylcholine (mACh) receptor subtypes in the striatum. A systemic injection of the M1-preferring antagonist telenzepine did not alter ERK phosphorylation in the two subdivisions of the striatum, the caudate putamen and nucleus accumbens. Similarly, telenzepine did not affect ERK phosphorylation in the medial prefrontal cortex (mPFC), hippocampus, and cerebellum. Moreover, telenzepine had no effect on the ERK phosphorylation induced by dopamine stimulation with the psychostimulant amphetamine. In contrast to telenzepine, the M4-preferring antagonist tropicamide consistently increased ERK phosphorylation in the striatum and mPFC. This increase was rapid and transient. Tropicamide and amphetamine when coadministered at subthreshold doses induced a significant increase in ERK phosphorylation. These results demonstrate that mACh receptors exert a subtype-specific modulation of ERK in striatal and mPFC neurons. While the M1 receptor antagonist has no effect on ERK phosphorylation, M4 receptors inhibit constitutive and dopamine-stimulated ERK phosphorylation in these dopamine-innervated brain regions.
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Affiliation(s)
- Nan He
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, MO 64108, USA
| | - Li-Min Mao
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, MO 64108, USA
| | - Adrian W Sturich
- Department of Anesthesiology, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Dao-Zhong Jin
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, MO 64108, USA
| | - John Q Wang
- Department of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, MO 64108, USA; Department of Anesthesiology, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA.
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Miyauchi M, Neugebauer NM, Sato T, Ardehali H, Meltzer HY. Muscarinic receptor signaling contributes to atypical antipsychotic drug reversal of the phencyclidine-induced deficit in novel object recognition in rats. J Psychopharmacol 2017; 31:1588-1604. [PMID: 28946779 DOI: 10.1177/0269881117731278] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Enhancement of cholinergic function via muscarinic acetylcholine receptor M1 agonism improves cognition in some schizophrenia patients. Most atypical antipsychotic drugs, including clozapine and its active metabolite, N-desmethylclozapine, and lurasidone, enhance the release of acetylcholine in key brain regions involved in cognition (e.g. hippocampus). We determined the effect of muscarinic acetylcholine receptor M1 stimulation on novel object recognition and its contribution to the ability of atypical antipsychotic drugs to reverse the novel object recognition deficit in rats withdrawn from subchronic phencyclidine, a rodent model of cognitive impairment in schizophrenia. In control rats, the non-specific muscarinic acetylcholine receptor antagonist, scopolamine, and the M1 selective antagonist, VU0255035, induced a novel object recognition deficit, which was reversed by the M1 agonist, AC260584. Scopolamine fully blocked the effect of clozapine and N-desmethylclozapine, but not lurasidone, to restore novel object recognition in subchronic phencyclidine-treated rats. VU0255035 also blocked these effects of clozapine and N-desmethylclozapine, but not lurasidone; however, the blockade was not as complete as that achieved with scopolamine. Furthermore, subchronic phencyclidine increased hippocampal M1 mRNA expression. These data suggest that M1 agonism is required for clozapine and N-desmethylclozapine to ameliorate the phencyclidine-induced deficit in novel object recognition, additional evidence that M1 agonism is a potential target for treating cognitive impairment in schizophrenia.
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Affiliation(s)
- Masanori Miyauchi
- 1 Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, USA.,2 Sumitomo Dainippon Pharma Co., Ltd, Suita, Japan
| | - Nichole M Neugebauer
- 1 Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, USA
| | - Tatsuya Sato
- 3 Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Hossein Ardehali
- 3 Feinberg Cardiovascular Research Institute (FCVRI), Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Herbert Y Meltzer
- 1 Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, USA
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9
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López Hill X, Richeri A, Scorza MC. Clozapine blockade of MK-801-induced learning/memory impairment in the mEPM: Role of 5-HT1A receptors and hippocampal BDNF levels. Physiol Behav 2017; 179:346-352. [DOI: 10.1016/j.physbeh.2017.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/05/2017] [Accepted: 07/08/2017] [Indexed: 12/22/2022]
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10
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Nicotinic receptors and lurasidone-mediated reversal of phencyclidine-induced deficit in novel object recognition. Behav Brain Res 2016; 301:204-12. [DOI: 10.1016/j.bbr.2015.10.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/16/2015] [Accepted: 10/22/2015] [Indexed: 12/19/2022]
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Higashino K, Ago Y, Umeki T, Hasebe S, Onaka Y, Hashimoto H, Takuma K, Matsuda T. Rivastigmine improves isolation rearing-induced prepulse inhibition deficits via muscarinic acetylcholine receptors in mice. Psychopharmacology (Berl) 2016; 233:521-8. [PMID: 26518025 DOI: 10.1007/s00213-015-4123-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 10/19/2015] [Indexed: 12/12/2022]
Abstract
RATIONALE The acetylcholinesterase inhibitors donepezil, galantamine, and rivastigmine are used for the treatment of Alzheimer's disease. We previously demonstrated that donepezil and galantamine differentially affect isolation rearing-induced prepulse inhibition (PPI) deficits and that this might be due to differential effects on brain muscarinic acetylcholine (mACh) receptor function in mice. OBJECTIVES We examined the effects of rivastigmine on isolation rearing-induced PPI deficits, brain ACh levels, and mACh receptor function in mice. METHODS Acoustic startle responses were measured in a startle chamber. Microdialysis was performed, and the levels of dopamine and ACh in the prefrontal cortex were measured. RESULTS Rivastigmine (0.3 mg/kg) improved PPI deficits, and this improvement was antagonized by the mACh receptor antagonist telenzepine but not by the nicotinic ACh receptor antagonist mecamylamine. Rivastigmine increased extracellular ACh levels by approximately 2-3-fold, less than the increase produced by galantamine. Rivastigmine enhanced the effect of the mACh receptor agonist N-desmethylclozapine on prefrontal dopamine release, a marker of mACh receptor function, and this increase was blocked by telenzepine. In contrast, galantamine did not affect N-desmethylclozapine-induced dopamine release. Furthermore, rivastigmine did not affect cortical dopamine release induced by the serotonin1A receptor agonist osemozotan, suggesting that the effect of rivastigmine has specificity for mACh receptors. CONCLUSIONS Taken together with our previous finding that marked increases in ACh levels are required for the PPI deficit improvement induced by galantamine, our present results suggest that rivastigmine improves isolation rearing-induced PPI deficits by increasing ACh levels and by concomitantly enhancing mACh receptor function.
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Affiliation(s)
- Kosuke Higashino
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Yukio Ago
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Takahiro Umeki
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Shigeru Hasebe
- Department of Pharmacology, Graduate School of Dentistry, Osaka University, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Yusuke Onaka
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Hitoshi Hashimoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan.,United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Kazuhiro Takuma
- Department of Pharmacology, Graduate School of Dentistry, Osaka University, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan.,United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Toshio Matsuda
- Laboratory of Medicinal Pharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871, Japan.
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12
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Stürmer GD, de Freitas TC, Heberle MDA, de Assis DR, Vinadé L, Pereira AB, Franco JL, Dal Belo CA. Modulation of dopaminergic neurotransmission induced by sublethal doses of the organophosphate trichlorfon in cockroaches. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 109:56-62. [PMID: 25164203 DOI: 10.1016/j.ecoenv.2014.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 08/03/2014] [Accepted: 08/05/2014] [Indexed: 06/03/2023]
Abstract
Organophosphate (OP) insecticides have been used indiscriminately, based on their high dissipation rates and low residual levels in the environment. Despite the toxicity of OPs to beneficial insects is principally devoted to the acetylcholinesterase (AChE) inhibition, the physiological mechanisms underlying this activity remain poorly understood. Here we showed the pharmacological pathways that might be involved in severe alterations in the insect locomotion and grooming behaviors following sublethal administration of the OP Trichlorfon (Tn) (0.25, 0.5 and 1 µM) in Phoetalia pallida. Tn inhibited the acetylcholinesterase activity (46±6, 38±3 and 24±6 nmol NADPH/min/mg protein, n=3, p<0.05), respectively. Tn (1 µM) also increased the walking maintenance of animals (46±5 s; n=27; p<0.05). Tn caused a high increase in the time spent for this behavior (344±18 s/30 min, 388±18 s/30 min and 228±12 s/30 min, n=29-30, p<0.05, respectively). The previous treatment of the animals with different cholinergic modulators showed that pirenzepine>atropine>oxotremorine>d-tubocurarine>tropicamide>methoctramine induced a decrease on Tn (0.5 µM)-induced grooming increase, respectively in order of potency. Metoclopramide (0.4 µM), a DA-D2 selective inhibitor decreased the Tn-induced grooming activity (158±12 s/30 min; n=29; p<0.05). Nevertheless, the effect of the selective DA-D1 receptor blocker SCH 23390 (1.85 µM) on the Tn (0.5 µM)-induced grooming increase was significative and more intense than that of metoclopramide (54±6 s/30 min; n=30; p<0.05). Taken together the results suggest that a cross-talking between cholinergic M1/M3 and dopaminergic D1 receptors at the insect nervous system may play a role in the OP-mediated behavioral alterations.
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Affiliation(s)
- Graziele Daiane Stürmer
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Thiago Carrazoni de Freitas
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Marines de Avila Heberle
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Dênis Reis de Assis
- Instituto do Cérebro do Rio Grande do Sul, Pontifícia Universidade, Católica do Rio Grande do Sul, PUCRS, Porto Alegre, RS, Brasil
| | - Lúcia Vinadé
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Antônio Batista Pereira
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Jeferson Luis Franco
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil
| | - Cháriston André Dal Belo
- CIPBiotec, Universidade Federal do Pampa, (UNIPAMPA), Campus São Gabriel, Av. Antônio Trilha, 1847, Centro, CEP 97300-000, São Gabriel, Rio Grande do Sul, Brasil.
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13
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Kargieman L, Riga MS, Artigas F, Celada P. Clozapine Reverses Phencyclidine-Induced Desynchronization of Prefrontal Cortex through a 5-HT(1A) Receptor-Dependent Mechanism. Neuropsychopharmacology 2012; 37:723-33. [PMID: 22012474 PMCID: PMC3260989 DOI: 10.1038/npp.2011.249] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The non-competitive NMDA receptor (NMDA-R) antagonist phencyclidine (PCP)-used as a pharmacological model of schizophrenia-disrupts prefrontal cortex (PFC) activity. PCP markedly increased the discharge rate of pyramidal neurons and reduced slow cortical oscillations (SCO; 0.15-4 Hz) in rat PFC. Both effects were reversed by classical (haloperidol) and atypical (clozapine) antipsychotic drugs. Here we extended these observations to mice brain and examined the potential involvement of 5-HT(2A) and 5-HT(1A) receptors (5-HT(2A)R and 5-HT(1A)R, respectively) in the reversal by clozapine of PCP actions. Clozapine shows high in vitro affinity for 5-HT(2A)R and behaves as partial agonist in vivo at 5-HT(1A)R. We used wild-type (WT) mice and 5-HT(1A)R and 5-HT(2A)R knockout mice of the same background (C57BL/6) (KO-1A and KO-2A, respectively). Local field potentials (LFPs) were recorded in the PFC of WT, KO-1A, and KO-2A mice. PCP (10 mg/kg, intraperitoneally) reduced SCO equally in WT, KO-2A, and KO-1A mice (58±4%, 42±7%, and 63±7% of pre-drug values, n=23, 13, 11, respectively; p<0.0003). Clozapine (0.5 mg/kg, intraperitoneally) significantly reversed PCP effect in WT and KO-2A mice, but not in KO-1A mice nor in WT mice pretreated with the selective 5-HT(1A)R antagonist WAY-100635.The PCP-induced disorganization of PFC activity does not appear to depend on serotonergic function. However, the lack of effect of clozapine in KO-1A mice and the prevention by WAY-100635 indicates that its therapeutic action involves 5-HT(1A)R activation without the need to block 5-HT(2A)R, as observed with clozapine-induced cortical dopamine release.
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Affiliation(s)
- Lucila Kargieman
- Department of Neurochemistry and Neuropharmacology, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain
| | - Maurizio S Riga
- Department of Neurochemistry and Neuropharmacology, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Francesc Artigas
- Department of Neurochemistry and Neuropharmacology, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Pau Celada
- Department of Neurochemistry and Neuropharmacology, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Department of Neurochemistry and Neuropharmacology, Institut d'Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas (IIBB-CSIC), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Rosselló 161, 6th floor, Barcelona 08036, Spain, Tel: +349 3363 8314, Fax: +349 3363 8301, E-mail:
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14
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Ohmura Y, Tsutsui-Kimura I, Kumamoto H, Minami M, Izumi T, Yamaguchi T, Yoshida T, Yoshioka M. Lithium, but not valproic acid or carbamazepine, suppresses impulsive-like action in rats. Psychopharmacology (Berl) 2012; 219:421-32. [PMID: 21947315 DOI: 10.1007/s00213-011-2496-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 09/07/2011] [Indexed: 11/28/2022]
Abstract
RATIONALE Higher impulsivity is a pathological symptom in several psychiatric disorders, including bipolar disorder, and is a risk factor for suicide. OBJECTIVES Our goal was to determine whether major mood-stabilizing drugs used for the treatment of bipolar disorder could suppress impulsive-like action in the three-choice serial reaction time task (3-CSRTT). METHODS Following training for the 3-CSRTT, rats were acutely administered lithium chloride (LiCl; 0, 3.2, 10, and 32 mg/kg, i.p.), valproic acid (0, 10, 32, and 100 mg/kg, i.p.), or carbamazepine (0, 10, 20, and 30 mg/kg, i.p.). To assess the anorexic effects of lithium, a simple food consumption test was conducted. RESULTS LiCl dose-dependently decreased the number of premature responses, an index of impulsive-like action. A high dose of LiCl (32 mg/kg) decreased food consumption, but its anorexic effects were not correlated with the effects of LiCl on premature responses. A moderate dose of LiCl (20 mg/kg) significantly reduced the number of premature responses without affecting motivation-related measures in the 3-CSRTT or the amount of food consumption. Although carbamazepine prolonged reward latency, an index of motivation for food, neither valproic acid nor carbamazepine significantly affected premature responses. CONCLUSION It is likely that lithium has a suppressive effect on impulsive action independent of the anorexic effect. Lithium may suppress impulsive behavior and thereby decrease the risk of suicide. The present results could provide an explanation for the antisuicidal effects of lithium and suggest that lithium could be a beneficial treatment for impulsivity-related disorders.
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Affiliation(s)
- Yu Ohmura
- Department of Neuropharmacology, Graduate School of Medicine, Hokkaido University, N15 W7 Kita-ku, Sapporo 060-8638, Japan.
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15
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Ohmura Y, Tsutsui-Kimura I, Yoshioka M. Impulsive Behavior and Nicotinic Acetylcholine Receptors. J Pharmacol Sci 2012; 118:413-22. [DOI: 10.1254/jphs.11r06cr] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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16
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Koda K, Ago Y, Yano K, Nishimura M, Kobayashi H, Fukada A, Takuma K, Matsuda T. Involvement of decreased muscarinic receptor function in prepulse inhibition deficits in mice reared in social isolation. Br J Pharmacol 2011; 162:763-72. [PMID: 20958289 DOI: 10.1111/j.1476-5381.2010.01080.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE We have previously reported that galantamine, a weak acetylcholinesterase inhibitor, improves prepulse inhibition (PPI) deficits in mice reared in social isolation. ACh receptors are involved in the underlying mechanism of PPI, but whether rearing in social isolation causes dysfunction of the cholinergic system is unknown. In this study, we examined the involvement of muscarinic receptors in the improvement of PPI deficits induced by galantamine, and whether the cholinergic system is altered in mice reared in isolation. EXPERIMENTAL APPROACH Three-week-old male ddY mice were housed in isolated cages for 6 weeks before the initiation of experiments to create PPI deficits. Cholinergic functions were determined by measuring the behavioural and neurochemical responses to nicotinic and muscarinic receptor agonists. KEY RESULTS The improvement by galantamine of social isolation-induced PPI deficits was blocked by scopolamine, a non-selective muscarinic antagonist, and telenzepine, a preferential M₁ receptor antagonist. Activation of M₁ receptors improved social isolation-induced PPI deficits. Social isolation did not affect choline acetyltransferase and acetylcholinesterase activities in the prefrontal cortex and hippocampus, but it reduced the locomotor-suppressive response to muscarinic agonist oxotremorine, but not to nicotine. The isolation also attenuated the M₁ receptor agonist N-desmethylclozapine-induced increase in prefrontal dopamine release. CONCLUSIONS AND IMPLICATIONS Galantamine improves PPI deficits of mice reared in social isolation via activation of M₁ receptors. Social isolation reduces the muscarinic, especially M₁, receptor function and this is involved in PPI deficits.
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Affiliation(s)
- K Koda
- Laboratory of Medicinal Pharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamada-oka, Suita, Osaka, Japan
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17
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Yadav PN, Abbas AI, Farrell MS, Setola V, Sciaky N, Huang XP, Kroeze WK, Crawford LK, Piel DA, Keiser MJ, Irwin JJ, Shoichet BK, Deneris ES, Gingrich J, Beck SG, Roth BL. The presynaptic component of the serotonergic system is required for clozapine's efficacy. Neuropsychopharmacology 2011; 36:638-51. [PMID: 21048700 PMCID: PMC3055689 DOI: 10.1038/npp.2010.195] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Clozapine, by virtue of its absence of extrapyramidal side effects and greater efficacy, revolutionized the treatment of schizophrenia, although the mechanisms underlying this exceptional activity remain controversial. Combining an unbiased cheminformatics and physical screening approach, we evaluated clozapine's activity at >2350 distinct molecular targets. Clozapine, and the closely related atypical antipsychotic drug olanzapine, interacted potently with a unique spectrum of molecular targets. This distinct pattern, which was not shared with the typical antipsychotic drug haloperidol, suggested that the serotonergic neuronal system was a key determinant of clozapine's actions. To test this hypothesis, we used pet1(-/-) mice, which are deficient in serotonergic presynaptic markers. We discovered that the antipsychotic-like properties of the atypical antipsychotic drugs clozapine and olanzapine were abolished in a pharmacological model that mimics NMDA-receptor hypofunction in pet1(-/-) mice, whereas haloperidol's efficacy was unaffected. These results show that clozapine's ability to normalize NMDA-receptor hypofunction, which is characteristic of schizophrenia, depends on an intact presynaptic serotonergic neuronal system.
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Affiliation(s)
- Prem N Yadav
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA
| | - Atheir I Abbas
- Department of Biochemistry, Case Western Reserve University Medical School, Cleveland, OH, USA
| | - Martilias S Farrell
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA
| | - Vincent Setola
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA,National Institute of Mental Heath Psychoactive Drug Screening Program, University of North Carolina, Chapel Hill, NC, USA
| | - Noah Sciaky
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA
| | - Xi-Ping Huang
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA,National Institute of Mental Heath Psychoactive Drug Screening Program, University of North Carolina, Chapel Hill, NC, USA
| | - Wesley K Kroeze
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA
| | - LaTasha K Crawford
- Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA, USA
| | - David A Piel
- Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA, USA
| | - Michael J Keiser
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA
| | - John J Irwin
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA
| | - Brian K Shoichet
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA
| | - Evan S Deneris
- Department of Neurosciences, Case Western Reserve University Medical School, Cleveland, OH, USA
| | - Jay Gingrich
- Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Sheryl G Beck
- Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA, USA,Department of Anesthesiology, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA 19104, USA. Tel: +1 215 590 0651; Fax: +1 215 590 4107; E-mail:
| | - Bryan L Roth
- National Institute of Mental Heath Psychoactive Drug Screening Program, University of North Carolina, Chapel Hill, NC, USA,Departments of Pharmacology, Medicinal Chemistry and Psychiatry, Lineberger Cancer Center, University of North Carolina, Chapel Hill, NC, USA,Department of Pharmacology, University of North Carolina, National Institute of Mental Heath Psychoactive Drug Screening Program, Chapel Hill, NC, 27516, USA. Tel: +1 919 966 7535; Fax: +1 919 843 5788; E-mail:
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18
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Dopamine release induced by atypical antipsychotics in prefrontal cortex requires 5-HT(1A) receptors but not 5-HT(2A) receptors. Int J Neuropsychopharmacol 2010; 13:1299-314. [PMID: 20158933 PMCID: PMC6112770 DOI: 10.1017/s146114571000009x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Atypical antipsychotic drugs (APDs) increase dopamine (DA) release in prefrontal cortex (PFC), an effect probably mediated by the direct or indirect activation of the 5-HT(1A) receptor (5-HT(1A)R). Given the very low in-vitro affinity of most APDs for 5-HT(1A)Rs and the large co-expression of 5-HT(1A)Rs and 5-HT(2A) receptors (5-HT(2A)Rs) in the PFC, this effect might result from the imbalance of 5-HT(1A)R and 5-HT(2A)R activation after blockade of these receptors by APDs, for which they show high affinity. Here we tested this hypothesis by examining the dependence of the APD-induced DA release in medial PFC (mPFC) on each receptor by using in-vivo microdialysis in wild-type (WT) and 5-HT(1A)R and 5-HT(2A)R knockout (KO) mice. Local APDs (clozapine, olanzapine, risperidone) administered by reverse dialysis induced a dose-dependent increase in mPFC DA output equally in WT and 5-HT(2A)R KO mice whereas the DA increase was absent in 5-HT(1A)R KO mice. To examine the relative contribution of both receptors to the clozapine-induced DA release in rat mPFC, we silenced G-protein-coupled receptors (GPCRs) in vivo with N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ) while 5-HT(1A)Rs or 5-HT(2A)/2CRs in the mPFC were selectively protected with the respective antagonists WAY-100635 or ritanserin. The inactivation of GPCRs while preserving ∼70% of 5-HT(2A)/(2C)Rs prevented the clozapine-induced DA rise in mPFC. In contrast, clozapine increased DA in mPFC of EEDQ-treated rats whose 5-HT(1A)Rs were protected (∼50% of control rats). These results indicate that (1) 5-HT(1A)Rs are necessary for the APDs-induced elevation in cortical DA transmission, and (2) this effect does not require 5-HT(2A)R blockade by APDs.
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19
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Yoshitake T, Yoshitake S, Kehr J. The Ginkgo biloba extract EGb 761(R) and its main constituent flavonoids and ginkgolides increase extracellular dopamine levels in the rat prefrontal cortex. Br J Pharmacol 2010; 159:659-68. [PMID: 20105177 DOI: 10.1111/j.1476-5381.2009.00580.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Experimental and clinical data suggest that extracts of Ginkgo biloba improve cognitive function. However, the neurochemical correlates of these effects are not yet fully clarified. The purpose of this study was to examine the effects of acute and repeated oral administration of the standardized extract EGb 761((R)) on extracellular levels of dopamine, noradrenaline and serotonin (5-HT), and the dopamine metabolites 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the prefrontal cortex (PFC) and striatum of conscious rats. EXPERIMENTAL APPROACH Monoamines and their metabolites were monitored by the use of microdialysis sampling and HPLC with electrochemical or fluorescence detection. KEY RESULTS A single oral dose of EGb 761 (100 mg.kg(-1)) had no effect on monoamine levels. However, following chronic (100 mg.kg(-1)/14 days/once daily) treatment, the same dose significantly increased extracellular dopamine and noradrenaline levels, while 5-HT levels were unaffected. Chronic treatment with EGb 761 showed dose-dependent increases in frontocortical dopamine levels and, to a lesser extent, in the striatum. The extracellular levels of HVA and DOPAC were not affected by either acute or repeated doses. Treatment with the main constituents of EGb 761 revealed that the increase in dopamine levels was mostly caused by the flavonol glycosides and ginkgolide fractions, whereas bilobalide treatment was without effect. CONCLUSIONS AND IMPLICATIONS The present results demonstrate that chronic but not acute treatment with EGb 761 increased dopaminergic transmission in the PFC. This finding may be one of the mechanisms underlying the reported effects of G. biloba in improving cognitive function.
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Affiliation(s)
- T Yoshitake
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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