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Higa GSV, Viana FJC, Francis-Oliveira J, Cruvinel E, Franchin TS, Marcourakis T, Ulrich H, De Pasquale R. Serotonergic neuromodulation of synaptic plasticity. Neuropharmacology 2024; 257:110036. [PMID: 38876308 DOI: 10.1016/j.neuropharm.2024.110036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/15/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
Synaptic plasticity constitutes a fundamental process in the reorganization of neural networks that underlie memory, cognition, emotional responses, and behavioral planning. At the core of this phenomenon lie Hebbian mechanisms, wherein frequent synaptic stimulation induces long-term potentiation (LTP), while less activation leads to long-term depression (LTD). The synaptic reorganization of neuronal networks is regulated by serotonin (5-HT), a neuromodulator capable of modify synaptic plasticity to appropriately respond to mental and behavioral states, such as alertness, attention, concentration, motivation, and mood. Lately, understanding the serotonergic Neuromodulation of synaptic plasticity has become imperative for unraveling its impact on cognitive, emotional, and behavioral functions. Through a comparative analysis across three main forebrain structures-the hippocampus, amygdala, and prefrontal cortex, this review discusses the actions of 5-HT on synaptic plasticity, offering insights into its role as a neuromodulator involved in emotional and cognitive functions. By distinguishing between plastic and metaplastic effects, we provide a comprehensive overview about the mechanisms of 5-HT neuromodulation of synaptic plasticity and associated functions across different brain regions.
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Affiliation(s)
- Guilherme Shigueto Vilar Higa
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil; Departamento de Bioquímica, Instituto de Química (USP), Butantã, São Paulo, SP, 05508-900, Brazil
| | - Felipe José Costa Viana
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil
| | - José Francis-Oliveira
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL, 35233, USA
| | - Emily Cruvinel
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil
| | - Thainá Soares Franchin
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil
| | - Tania Marcourakis
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil
| | - Henning Ulrich
- Departamento de Bioquímica, Instituto de Química (USP), Butantã, São Paulo, SP, 05508-900, Brazil
| | - Roberto De Pasquale
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, São Paulo, SP, 05508-000, Brazil.
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Schmidt SD, Zinn CG, Cavalcante LE, Ferreira FF, Furini CRG, Izquierdo I, de Carvalho Myskiw J. Participation of Hippocampal 5-HT 5A, 5-HT 6 and 5-HT 7 Serotonin Receptors on the Consolidation of Social Recognition Memory. Neuroscience 2022; 497:171-183. [PMID: 35718219 DOI: 10.1016/j.neuroscience.2022.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 05/31/2022] [Accepted: 06/09/2022] [Indexed: 11/28/2022]
Abstract
Social recognition is the ability of animals to identify and recognize a conspecific. The consolidation of social stimuli in long-term memory is crucial for the establishment and maintenance of social groups, reproduction and species survival. Despite its importance, little is known about the circuitry and molecular mechanisms involved in the social recognition memory (SRM). Serotonin (5-hydroxytryptamine, 5-HT) is acknowledged as a major neuromodulator, which plays a key role in learning and memory. Focusing on the more recently described 5-HT receptors, we investigated in the CA1 region of the dorsal hippocampus the participation of 5-HT5A, 5-HT6 and 5-HT7 receptors in the consolidation of SRM. Male Wistar rats cannulated in CA1 were subjected to a social discrimination task. In the sample phase the animals were exposed to a juvenile conspecific for 1 h. Immediately after, they received different pharmacological treatments. Twenty-four hours later, they were submitted to a 5 min retention test in the presence of the previously presented juvenile (familiar) and a novel juvenile. The animals that received infusions of 5-HT5A receptor antagonist SB-699551 (10 µg/µL), 5-HT6 receptor agonist WAY-208466 (0.63 µg/µL) or 5-HT7 receptor agonist AS-19 (5 µg/µL) intra-CA1 were unable to recognize the familiar juvenile. This effect was blocked by the coinfusion of WAY-208466 plus 5-HT6 receptor antagonist SB-271046 (10 µg/µL) or AS-19 plus 5-HT7 receptor antagonist SB-269970 (5 µg/µL). The present study helps to clarify the neurobiological functions of the 5-HT receptors more recently described and extends our knowledge about mechanisms underlying the SRM.
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Affiliation(s)
- Scheila Daiane Schmidt
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil.
| | - Carolina Garrido Zinn
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Lorena Evelyn Cavalcante
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Flávia Fagundes Ferreira
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Cristiane Regina Guerino Furini
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902, Rio de Janeiro, Brazil
| | - Ivan Izquierdo
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902, Rio de Janeiro, Brazil
| | - Jociane de Carvalho Myskiw
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6690-2nd Floor, 90610-000 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902, Rio de Janeiro, Brazil; Psychobiology and Neurocomputation Laboratory (LPBNC), Department of Biophysics, Institute of Biosciences, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Building 43422, Room 208A, 91501-970 Porto Alegre, RS, Brazil.
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Wang JW, Liu J, Wang ZL, Gao F, Yang J, Wang XC, Guo Y, Wang Y, Ma BR, Wang HS, Hu YW, Zhang YM, Hui YP, Zhang L. Activation and blockade of 5-HT 4 receptors in the dorsal hippocampus enhance working and hippocampus-dependent memories in the unilateral 6-hydroxydopamine lesioned rats. Behav Brain Res 2022; 431:113952. [PMID: 35688293 DOI: 10.1016/j.bbr.2022.113952] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 05/28/2022] [Accepted: 06/05/2022] [Indexed: 11/02/2022]
Abstract
Cognitive dysfunction is a common symptom in Parkinson's disease (PD). Serotonin4 (5-HT4) receptors are richly expressed in the dorsal hippocampus (dHIPP) and play an important role in cognitive activities. However, the mechanism underlying the role of dHIPP 5-HT4 receptors in PD-related cognitive dysfunction remains unclear. Here we found that unilateral 6-hydroxydopamine lesions of the medial forebrain bundle increased the protein expression of 5-HT4 receptors in the dHIPP, decreased hippocampal theta rhythm, and impaired working memory and hippocampus-dependent memory in the T-maze and hole-board test, respectively. Both activation and blockade of dHIPP 5-HT4 receptors (agonist BIMU8 and antagonist GR113808) improved working memory and hippocampus-dependent memory in the lesioned rats, but not in sham rats. Activation of dHIPP 5-HT4 receptors increased hippocampal theta rhythm in the lesioned rats. The neurochemical studies showed that injection of BIMU8, GR113808 or GR113808/BIMU8 in the dHIPP increased the levels of dopamine in the medial prefrontal cortex (mPFC), dHIPP and amygdala, and the level of 5-HT in the amygdala in the lesioned rats, but not in sham rats. Injection of GR113808 or GR113808/BIMU8 into the dHIPP also increased the levels of noradrenaline in the mPFC, dHIPP and amygdala only in the lesioned rats. These results suggest that activation or blockade of dHIPP 5-HT4 receptors may improve the cognitive impairments in parkinsonian rats, which may be due to the increase of hippocampal theta rhythm, up-regulated expressions of 5-HT4 receptors in the dHIPP and the changes in the levels of monoamines in the relative brain areas.
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Affiliation(s)
- Jia-Wei Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Jian Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Zhao-Long Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Feng Gao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Jie Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Xiao-Chen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Yuan Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Yong Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Bo-Rui Ma
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Hui-Sheng Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Yi-Wei Hu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Yu-Ming Zhang
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Yan-Ping Hui
- Department of Rehabilitation Medicine, The Second Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Li Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China.
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Poutoglidou F, Pourzitaki C, Manthou ME, Saitis A, Malliou F, Kouvelas D. Infliximab and tocilizumab reduce anxiety-like behavior, improve cognitive performance and reverse neuropathological alterations in juvenile rats with severe autoimmune arthritis. Int Immunopharmacol 2021; 99:107917. [PMID: 34217991 DOI: 10.1016/j.intimp.2021.107917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/08/2021] [Accepted: 06/21/2021] [Indexed: 12/16/2022]
Abstract
Several studies have demonstrated that rheumatic diseases, including Juvenile Idiopathic Arthritis (JIA), are associated with anxiety-like behavior and a cognitive decline. Infliximab, a Tumor Necrosis Factor-alpha (TNF-a) inhibitor, and tocilizumab, an antibody against Interleukin-6 (IL-6) receptor, are commonly used in the treatment of JIA. Here, we aimed to evaluate the effects of infliximab and tocilizumab on anxiety symptoms and cognitive function in a juvenile model of severe autoimmune arthritis. We found that both infliximab and tocilizumab improved anxiety-like behavior in the elevated-plus and elevated-zero maze tests. Tocilizumab, also, improved cognitive performance in the passive avoidance and olfactory social memory tests. Histological examination showed that anti-cytokine treatment reversed the histopathological alterations in the brain induced by arthritis. Further, infliximab and tocilizumab treatment increased Brain-Derived Neurotrophic Factor (BDNF) expression in the hippocampal and amygdaloid area of rat brain. In summary, our findings provide evidence that infliximab and tocilizumab have a beneficial effect on anxiety-like behavior and cognitive function and alleviate neuropathological alterations in a juvenile rat model of severe arthritis, suggesting that inhibition of TNF-a and IL-6 in the periphery, may be associated with a mood and memory enhancement in JIA patients.
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Affiliation(s)
- Frideriki Poutoglidou
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece.
| | - Chryssa Pourzitaki
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology and Embryology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece
| | - Athanasios Saitis
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece
| | - Foteini Malliou
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece
| | - Dimitrios Kouvelas
- Department of Clinical Pharmacology, School of Medicine, Aristotle University of Thessaloniki, University Campus 54124 Thessaloniki, Greece
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Poutoglidou F, Pourzitaki C, Manthou ME, Malliou F, Saitis A, Tsimoulas I, Panagiotopoulos S, Kouvelas D. Effects of long-term infliximab and tocilizumab treatment on anxiety-like behavior and cognitive function in naive rats. Pharmacol Rep 2021; 74:84-95. [PMID: 34569017 DOI: 10.1007/s43440-021-00328-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/16/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Circulating cytokines have been proposed to be implicated in the development of mood disorders and cognitive impairment. This study aims to examine the effect of chronic treatment with infliximab, a tumor necrosis factor-alpha (TNF-alpha) inhibitor, and tocilizumab, an antibody against interleukin-6 (IL-6) receptor on anxiety-like behavior and cognitive function. METHODS Twenty-eight male, Wistar rats were randomly allocated into negative control, vehicle, infliximab and tocilizumab groups. After 8 weeks of intraperitoneal drug administration, rats performed the elevated-plus maze, the elevated-zero maze, the olfactory social memory and the passive avoidance tests. Brain sections at the level of the hippocampus, the amygdala and the prefrontal cortex were histologically examined. Finally, hippocampal and amygdaloid brain-derived neurotrophic factor (BDNF) expression was determined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). RESULTS Infliximab group exhibited a significantly higher number of entries and time spent into the open arms of the mazes, showing a lower level of anxiety. In the olfactory social memory test, tocilizumab significantly increased the ratio of interaction. Both infliximab- and tocilizumab-treated animals had a significantly lower latency time in the passive avoidance test that suggests an improved memory. Histological examination revealed similar morphology and neuronal density between groups. BDNF expression levels were significantly increased in the groups receiving anti-cytokine treatment. CONCLUSIONS Our findings suggest that long-term peripheral TNF-alpha and IL-6 inhibition improves anxiety and cognitive function in rats and leads to an increased BDNF expression in the brain.
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Affiliation(s)
- Frideriki Poutoglidou
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece. .,Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, PO Box 1532, 54006, Thessaloníki, Greece.
| | - Chryssa Pourzitaki
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology and Embryology, Medical School, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloníki, Greece
| | - Foteini Malliou
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Athanasios Saitis
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Ioannis Tsimoulas
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Spyridon Panagiotopoulos
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
| | - Dimitrios Kouvelas
- Department of Clinical Pharmacology, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece
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Poutoglidou F, Pourzitaki C, Manthou ME, Saitis A, Malliou F, Kouvelas D. Infliximab and Tocilizumab Reduce Anxiety-Like Behaviour and Improve Cognitive Performance in a Juvenile Collagen-Induced Arthritis Rat Model. Inflammation 2021; 45:445-459. [PMID: 34515956 DOI: 10.1007/s10753-021-01560-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/03/2021] [Indexed: 12/16/2022]
Abstract
Anxiety disorders and cognitive decline are highly prevalent in rheumatic diseases, including Juvenile Idiopathic Arthritis (JIA). In this study, we investigated the effect of long-term treatment with infliximab and tocilizumab on anxiety-like behaviour and cognitive performance in a juvenile collagen-induced arthritis (CIA) rat model. Forty-nine rats with established moderate arthritis were randomly allocated into 7 equal groups: negative control, vehicle, methotrexate, infliximab, tocilizumab, methotrexate + infliximab and methotrexate + tocilizumab groups. Behavioural tests were performed to evaluate anxiety-like behaviour and cognitive function. Neuropathological changes were investigated by histological examination at the level of the hippocampus, the amygdala and the prefrontal cortex. Also, the expression of Brain-Derived Neurotrophic Factor (BDNF), a biomarker associated with neuronal survival and plasticity, was determined in the hippocampus and the amygdala by RT-qPCR. We found that both infliximab and tocilizumab reduced anxiety-like behaviour in the elevated-plus and elevated-zero maze tests. Tocilizumab, also, improved cognitive function in the olfactory social memory and passive avoidance tests. Anti-cytokine treatment reversed the histopathological changes in the brain induced by CIA. BDNF expression was higher in all treatment groups and especially those receiving monoclonal antibodies combined with methotrexate. Our data provide evidence that chronic infliximab and tocilizumab treatment reduces anxiety-like behaviour, improves cognitive function, reverses neuropathological changes and increases central BDNF expression in a juvenile arthritis rat model. These findings may be translated to humans to address behavioural comorbidities associated with JIA.
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Affiliation(s)
- Frideriki Poutoglidou
- Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece.
| | - Chryssa Pourzitaki
- Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology and Embryology, Medical School, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Athanasios Saitis
- Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Foteini Malliou
- Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Dimitrios Kouvelas
- Department of Clinical Pharmacology, School of Health Sciences, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
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7
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Murphy SE, de Cates AN, Gillespie AL, Godlewska BR, Scaife JC, Wright LC, Cowen PJ, Harmer CJ. Translating the promise of 5HT 4 receptor agonists for the treatment of depression. Psychol Med 2021; 51:1111-1120. [PMID: 32241310 PMCID: PMC8188527 DOI: 10.1017/s0033291720000604] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 02/21/2020] [Accepted: 02/28/2020] [Indexed: 12/11/2022]
Abstract
Animal experimental studies suggest that 5-HT4 receptor activation holds promise as a novel target for the treatment of depression and cognitive impairment. 5-HT4 receptors are post-synaptic receptors that are located in striatal and limbic areas known to be involved in cognition and mood. Consistent with this, 5-HT4 receptor agonists produce rapid antidepressant effects in a number of animal models of depression, and pro-cognitive effects in tasks of learning and memory. These effects are accompanied by molecular changes, such as the increased expression of neuroplasticity-related proteins that are typical of clinically useful antidepressant drugs. Intriguingly, these antidepressant-like effects have a fast onset of their action, raising the possibility that 5-HT4 receptor agonists may be a particularly useful augmentation strategy in the early stages of SSRI treatment. Until recently, the translation of these effects to humans has been challenging. Here, we review the evidence from animal studies that the 5-HT4 receptor is a promising target for the treatment of depression and cognitive disorders, and outline a potential pathway for the efficient and cost-effective translation of these effects into humans and, ultimately, to the clinic.
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Affiliation(s)
- Susannah E Murphy
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Angharad N de Cates
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Amy L Gillespie
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Beata R Godlewska
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Jessica C Scaife
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Lucy C Wright
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Philip J Cowen
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
| | - Catherine J Harmer
- University Department of Psychiatry, Warneford Hospital, University of Oxford, OX3 7JX, UK
- Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
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8
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Bombardi C, Grandis A, Pivac N, Sagud M, Lucas G, Chagraoui A, Lemaire-Mayo V, De Deurwaerdère P, Di Giovanni G. Serotonin modulation of hippocampal functions: From anatomy to neurotherapeutics. PROGRESS IN BRAIN RESEARCH 2021; 261:83-158. [PMID: 33785139 DOI: 10.1016/bs.pbr.2021.01.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The hippocampal region receives a dense serotoninergic innervation originating from both medial and dorsal raphe nuclei. This innervation regulates hippocampal activity through the activation of distinct receptor families that are expressed in excitatory and inhibitory neurons, terminals of several afferent neurotransmitter systems, and glial cells. Preclinical and clinical studies indicate that hippocampal dysfunctions are involved in learning and memory deficits, dementia, Alzheimer's disease, epilepsy and mood disorders such as anxiety, depression and post-traumatic syndrome disorder, whereas the hippocampus participates also in the therapeutic mechanisms of numerous medicines. Not surprisingly, several drugs acting via 5-HT mechanisms are efficacious to some extent in some diseases and the link between 5-HT and the hippocampus although clear remains difficult to untangle. For this reason, we review reported data concerning the distribution and the functional roles of the 5-HT receptors in the hippocampal region in health and disease. The impact of the 5-HT systems on the hippocampal function is such that the research of new 5-HT mechanisms and drugs is still very active. It concerns notably drugs acting at the 5-HT1A,2A,2C,4,6 receptor subtypes, in addition to the already existing drugs including the selective serotonin reuptake inhibitors.
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Affiliation(s)
- Cristiano Bombardi
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy.
| | - Annamaria Grandis
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Nela Pivac
- Division of Molecular Medicine, Rudier Boskovic Institute, Zagreb, Croatia
| | - Marina Sagud
- Clinical Hospital Center Zagreb and School of Medicine University of Zagreb, Zagreb, Croatia
| | - Guillaume Lucas
- Neurocentre Magendie, INSERM 1215, Université de Bordeaux, Bordeaux, France
| | - Abdeslam Chagraoui
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Normandie University, UNIROUEN, INSERM U1239, Rouen, France; Department of Medical Biochemistry, Rouen University Hospital, Rouen, France
| | - Valérie Lemaire-Mayo
- Centre National de la Recherche Scientifique, Institut des Neurosciences Intégratives et Cognitives d'Aquitaine, UMR 5287, Bordeaux, France
| | - Philippe De Deurwaerdère
- Centre National de la Recherche Scientifique, Institut des Neurosciences Intégratives et Cognitives d'Aquitaine, UMR 5287, Bordeaux, France
| | - Giuseppe Di Giovanni
- Laboratory of Neurophysiology, Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Msida, Malta; Neuroscience Division, School of Biosciences, Cardiff University, Cardiff, United Kingdom
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Vaseghi S, Nasehi M, Zarrindast MR. How do stupendous cannabinoids modulate memory processing via affecting neurotransmitter systems? Neurosci Biobehav Rev 2020; 120:173-221. [PMID: 33171142 DOI: 10.1016/j.neubiorev.2020.10.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/17/2020] [Accepted: 10/26/2020] [Indexed: 12/27/2022]
Abstract
In the present study, we wanted to review the role of cannabinoids in learning and memory in animal models, with respect to their interaction effects with six principal neurotransmitters involved in learning and memory including dopamine, glutamate, GABA (γ-aminobutyric acid), serotonin, acetylcholine, and noradrenaline. Cannabinoids induce a wide-range of unpredictable effects on cognitive functions, while their mechanisms are not fully understood. Cannabinoids in different brain regions and in interaction with different neurotransmitters, show diverse responses. Previous findings have shown that cannabinoids agonists and antagonists induce various unpredictable effects such as similar effect, paradoxical effect, or dualistic effect. It should not be forgotten that brain neurotransmitter systems can also play unpredictable roles in mediating cognitive functions. Thus, we aimed to review and discuss the effect of cannabinoids in interaction with neurotransmitters on learning and memory. In addition, we mentioned to the type of interactions between cannabinoids and neurotransmitter systems. We suggested that investigating the type of interactions is a critical neuropharmacological issue that should be considered in future studies.
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Affiliation(s)
- Salar Vaseghi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Cognitive Neuroscience, Institute for Cognitive Science Studies (ICSS), Tehran, Iran
| | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mohammad-Reza Zarrindast
- Department of Cognitive Neuroscience, Institute for Cognitive Science Studies (ICSS), Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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10
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Eydipour Z, Nasehi M, Vaseghi S, Jamaldini SH, Zarrindast MR. The role of 5-HT4 serotonin receptors in the CA1 hippocampal region on memory acquisition impairment induced by total (TSD) and REM sleep deprivation (RSD). Physiol Behav 2019; 215:112788. [PMID: 31863855 DOI: 10.1016/j.physbeh.2019.112788] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/06/2019] [Accepted: 12/18/2019] [Indexed: 01/20/2023]
Abstract
Sleep is a circadian rhythm that is modulated by endogenous circadian clock located in the suprachiasmatic nucleus (SCN). Sleep modulates memory acquisition and promotes memory consolidation. Studies have shown that sleep deprivation (SD) impairs different types of memory including passive avoidance. Furthermore, the hippocampus plays a significant role in modulating passive avoidance memory. On the other hand, 5-HT4 receptors are expressed in the hippocampus and involved in learning and memory processes. In this study, we aimed to investigate the role of CA1 hippocampal 5-HT4 receptors in memory acquisition impairment induced by total sleep deprivation (TSD: 24 h) and REM sleep deprivation (RSD: 24 h). The water box apparatus was used to induce TSD, while multi-platform apparatus was applied to induce RSD. Passive avoidance memory test was also used to evaluate memory acquisition. The results showed that, intra-CA1 pre-training injection of RS67333 (5-HT4 agonist) and RS23597 (5-HT4 antagonist) at the doses of 0.01 and 0.1 µg/rat decreased memory acquisition, but did not alter pain perception and locomotor activity. Furthermore, TSD and RSD decreased memory acquisition; however, only TSD decreased locomotor activity and induced analgesic effect. The sub-threshold doses of RS67333 and RS23597, 0.001 and 0.0001 µg/rat, respectively, reversed the effect of TSD on memory acquisition and locomotor activity. In addition, only RS23597 reversed TSD-induced analgesia. In RSD condition, the subthreshold dose of RS23597 improved RSD-induced memory acquisition deficit. In conclusion, CA1 hippocampal 5-HT4 receptors play an important role in TSD/RSD-induced cognitive alterations.
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Affiliation(s)
- Zainab Eydipour
- Department of Biology, Damghan Branch, Islamic Azad University, Semnan, Iran
| | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Salar Vaseghi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Seyed Hamid Jamaldini
- Department of Genetic, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mohammad-Reza Zarrindast
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran; Institute for Cognitive Science Studies (ICSS), Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Neuroendocrinology, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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11
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Tzakis N, Holahan MR. Social Memory and the Role of the Hippocampal CA2 Region. Front Behav Neurosci 2019; 13:233. [PMID: 31632251 PMCID: PMC6779725 DOI: 10.3389/fnbeh.2019.00233] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/17/2019] [Indexed: 01/02/2023] Open
Abstract
The CA2 region of the hippocampus is a somewhat obscure area lacking in an understanding of its form and function. Until recently, the CA2 has been thought of as merely an extension of the CA3, with some referring to it as the CA3a region. Recent investigations into this area have not only delineated the CA2, but also defined it as a region distinct from both CA1 and CA3, with a unique set of cortical inputs and outputs and contributions to cognitive processes. One such process that has been shown to depend on the CA2 is the ability to recognize a novel or familiar conspecific, known as social recognition memory. Here, we review these findings and discuss the parallels between CA2 dysfunction and social impairments.
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Affiliation(s)
- Nikolaos Tzakis
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
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12
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Rebholz H, Friedman E, Castello J. Alterations of Expression of the Serotonin 5-HT4 Receptor in Brain Disorders. Int J Mol Sci 2018; 19:ijms19113581. [PMID: 30428567 PMCID: PMC6274737 DOI: 10.3390/ijms19113581] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 11/03/2018] [Accepted: 11/06/2018] [Indexed: 01/12/2023] Open
Abstract
The serotonin 4 receptor, 5-HT₄R, represents one of seven different serotonin receptor families and is implicated in a variety of physiological functions and their pathophysiological variants, such as mood and depression or anxiety, food intake and obesity or anorexia, or memory and memory loss in Alzheimer's disease. Its central nervous system expression pattern in the forebrain, in particular in caudate putamen, the hippocampus and to lesser extent in the cortex, predispose it for a role in executive function and reward-related actions. In rodents, regional overexpression or knockdown in the prefrontal cortex or the nucleus accumbens of 5-HT₄R was shown to impact mood and depression-like phenotypes, food intake and hypophagia; however, whether expression changes are causally involved in the etiology of such disorders is not clear. In this context, more data are emerging, especially based on PET technology and the use of ligand tracers that demonstrate altered 5-HT₄R expression in brain disorders in humans, confirming data stemming from post-mortem tissue and preclinical animal models. In this review, we would like to present the current knowledge of 5-HT₄R expression in brain regions relevant to mood/depression, reward and executive function with a focus on 5-HT₄R expression changes in brain disorders or caused by drug treatment, at both the transcript and protein levels.
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Affiliation(s)
- Heike Rebholz
- Department of Molecular, Cellular and Biomedical Sciences, CUNY School of Medicine, New York, NY 10031, USA.
| | - Eitan Friedman
- Department of Molecular, Cellular and Biomedical Sciences, CUNY School of Medicine, New York, NY 10031, USA.
- Ph.D. Programs in Biochemistry and Biology, The Graduate Center, City University of New York, New York, NY 10031, USA.
| | - Julia Castello
- Department of Molecular, Cellular and Biomedical Sciences, CUNY School of Medicine, New York, NY 10031, USA.
- Ph.D. Programs in Biochemistry and Biology, The Graduate Center, City University of New York, New York, NY 10031, USA.
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Nirogi R, Mohammed AR, Shinde AK, Gagginapally SR, Kancharla DM, Middekadi VR, Bogaraju N, Ravella SR, Singh P, Birangal SR, Subramanian R, Palacharla RC, Benade V, Muddana N, Jayarajan P. Synthesis, Structure-Activity Relationships, and Preclinical Evaluation of Heteroaromatic Amides and 1,3,4-Oxadiazole Derivatives as 5-HT 4 Receptor Partial Agonists. J Med Chem 2018; 61:4993-5008. [PMID: 29763304 DOI: 10.1021/acs.jmedchem.8b00457] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder that has a higher prevalence and incidence in people older than 60 years. The need for improved AD therapies is unmet as the current therapies are symptomatic with modest efficacy. Partial agonists of the 5-HT4 receptor (5-HT4R) offer both symptomatic and disease-modifying treatments as they shift amyloid-precursor-protein (APP) processing from the amyloidogenic pathway to the nonamyloidogenic pathway by activating the α-secretase enzyme. In addition, they also offer symptomatic treatment by increasing levels of the neurotransmitter acetylcholine in the brain. Because of this fascinating dual mechanism of action, several chemical scaffolds having 5-HT4R pharmacophores were designed and evaluated. Most of the synthesized compounds showed potent in vitro affinities and in vivo efficacies. Upon analysis of focused structure-activity relationships, compound 4o was identified as a potent 5-HT4R partial agonist with favorable ADME properties and good in vivo efficacy. GR-125487, a selective 5-HT4R antagonist, attenuated the activity of compound 4o in the novel-object-recognition-test cognition model.
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Affiliation(s)
- Ramakrishna Nirogi
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Abdul Rasheed Mohammed
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Anil K Shinde
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Shankar Reddy Gagginapally
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Durga Malleshwari Kancharla
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Vanaja Reddy Middekadi
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Narsimha Bogaraju
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Srinivasa Rao Ravella
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Pooja Singh
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Sumit Raosaheb Birangal
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Ramkumar Subramanian
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Raghava Choudary Palacharla
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Vijay Benade
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Nageswararao Muddana
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
| | - Pradeep Jayarajan
- Discovery Research , Suven Life Sciences Limited , Serene Chambers, Road-5, Avenue-7, Banjara Hills , Hyderabad 500 034 , India
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14
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Baranger K, Giannoni P, Girard SD, Girot S, Gaven F, Stephan D, Migliorati M, Khrestchatisky M, Bockaert J, Marchetti-Gauthier E, Rivera S, Claeysen S, Roman FS. Chronic treatments with a 5-HT 4 receptor agonist decrease amyloid pathology in the entorhinal cortex and learning and memory deficits in the 5xFAD mouse model of Alzheimer's disease. Neuropharmacology 2017; 126:128-141. [DOI: 10.1016/j.neuropharm.2017.08.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/25/2017] [Accepted: 08/22/2017] [Indexed: 12/11/2022]
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15
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Abstract
Alzheimer's disease (AD) is the most common form of dementia affecting millions of patients worldwide which can only be treated with symptomatic drugs. Among the numbers of biological targets which are today explored in order to prevent or limit the progression of AD, the modulation of 5-HT6R and 5-HT4R appeared to be promising. This modulation has been proved to enhance the cognition in AD through modulation of the neurotransmitter system but could also be beneficial in order to limit the amyloid pathology. This review will describe recent advances in the understanding of this modulation as well as the medicinal chemistry of 5-HT6R or 5-HT4R ligands from synthesis to ongoing clinical trials.
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16
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Nasehi M, Rostam-Nezhad E, Ebrahimi-Ghiri M, Zarrindast MR. Interaction between hippocampal serotonin and cannabinoid systems in reactivity to spatial and object novelty detection. Behav Brain Res 2017; 317:272-278. [DOI: 10.1016/j.bbr.2016.09.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/21/2016] [Accepted: 09/25/2016] [Indexed: 12/12/2022]
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17
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Nirogi R, Gagginapally SR, Shinde AK, Mohammed AR. Synthesis of GR 125487, a selective 5-HT 4 receptor antagonist. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1178297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | - Anil K. Shinde
- Discovery Research, Suven Life Sciences Ltd., Hyderabad, India
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18
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Hagena H, Manahan-Vaughan D. The serotonergic 5-HT4 receptor: A unique modulator of hippocampal synaptic information processing and cognition. Neurobiol Learn Mem 2016; 138:145-153. [PMID: 27317942 DOI: 10.1016/j.nlm.2016.06.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/06/2016] [Accepted: 06/14/2016] [Indexed: 01/10/2023]
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) contributes in multifarious ways to the regulation of brain function, spanning key aspects such as the sleep-wake cycle, appetite, mood and mental health. The 5-HT receptors comprise seven receptor families (5-HT1-7) that are further subdivided into 14 receptor subtypes. The role of the 5-HT receptor in the modulation of neuronal excitability has been well documented. Recently, however, it has become apparent that the 5-HT4 receptor may contribute significantly to cognition and regulates less ostensible aspects of brain function: it engages in metaplastic regulation of synaptic responsiveness in key brain structures such as the hippocampus, thereby specifically promoting persistent forms of synaptic plasticity, and influences the direction of change in synaptic strength in selected hippocampal subfields. This highly specific neuromodulatory control by the 5-HT4 receptor may in turn explain the reported role for this receptor in hippocampus-dependent cognition. In this review article, we describe the role of the 5-HT4 receptor in hippocampal function, and describe how this receptor plays a unique and highly specialised role in synaptic information storage and cognition.
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Affiliation(s)
- Hardy Hagena
- Department of Neurophysiology, Medical Faculty, Ruhr University Bochum, Germany
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19
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Švob Štrac D, Pivac N, Mück-Šeler D. The serotonergic system and cognitive function. Transl Neurosci 2016; 7:35-49. [PMID: 28123820 PMCID: PMC5017596 DOI: 10.1515/tnsci-2016-0007] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 04/22/2016] [Indexed: 01/23/2023] Open
Abstract
Symptoms of cognitive dysfunction like memory loss, poor concentration, impaired learning and executive functions are characteristic features of both schizophrenia and Alzheimer’s disease (AD). The neurobiological mechanisms underlying cognition in healthy subjects and neuropsychiatric patients are not completely understood. Studies have focused on serotonin (5-hydroxytryptamine, 5-HT) as one of the possible cognitionrelated biomarkers. The aim of this review is to provide a summary of the current literature on the role of the serotonergic (5-HTergic) system in cognitive function, particularly in AD and schizophrenia. The role of the 5-HTergic system in cognition is modulated by the activity and function of 5-HT receptors (5-HTR) classified into seven groups, which differ in structure, action, and localization. Many 5-HTR are located in the regions linked to various cognitive processes. Preclinical studies using animal models of learning and memory, as well as clinical in vivo (neuroimaging) and in vitro (post-mortem) studies in humans have shown that alterations in 5-HTR activity influence cognitive performance. The current evidence implies that reduced 5-HT neurotransmission negatively influences cognitive functions and that normalization of 5-HT activity may have beneficial effects, suggesting that 5-HT and 5-HTR represent important pharmacological targets for cognition enhancement and restoration of impaired cognitive performance in neuropsychiatric disorders.
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Affiliation(s)
| | - Nela Pivac
- Division of Molecular Medicine, Ruđer Bošković Institute, Zagreb, Croatia
| | - Dorotea Mück-Šeler
- Division of Molecular Medicine, Ruđer Bošković Institute, Zagreb, Croatia
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20
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Twarkowski H, Hagena H, Manahan-Vaughan D. The 5-hydroxytryptamine4 receptor enables differentiation of informational content and encoding in the hippocampus. Hippocampus 2016; 26:875-91. [PMID: 26800645 PMCID: PMC5067691 DOI: 10.1002/hipo.22569] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/15/2016] [Accepted: 01/20/2016] [Indexed: 11/10/2022]
Abstract
Long‐term synaptic plasticity, represented by long‐term depression (LTD) and long‐term potentiation (LTP) comprise cellular processes that enable memory. Neuromodulators such as serotonin regulate hippocampal function, and the 5‐HT4‐receptor contributes to processes underlying cognition. It was previously shown that in the CA1‐region, 5‐HT4‐receptors regulate the frequency‐response relationship of synaptic plasticity: patterned afferent stimulation that has no effect on synaptic strength (i.e., a θm‐frequency), will result in LTP or LTD, when given in the presence of a 5‐HT4‐agonist, or antagonist, respectively. Here, we show that in the dentate gyrus (DG) and CA3 regions of freely behaving rats, pharmacological manipulations of 5‐HT4‐receptors do not influence responses generated at θm‐frequencies, but activation of 5‐HT4‐receptors prevents persistent LTD in mossy fiber (mf)‐CA3, or perforant path‐DG synapses. Furthermore, the regulation by 5‐HT4‐receptors of LTP is subfield‐specific: 5‐HT4‐receptor‐activation prevents mf‐CA3‐LTP, but does not strongly affect DG‐potentiation. These data suggest that 5‐HT4‐receptor activation prioritises information encoding by means of LTP in the DG and CA1 regions, and suppresses persistent information storage in mf‐CA3 synapses. Thus, 5‐HT4‐receptors serve to shape information storage across the hippocampal circuitry and specify the nature of experience‐dependent encoding. © 2016 The Authors Hippocampus Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Hannah Twarkowski
- Department of Neurophysiology, Medical Faculty, Ruhr University Bochum, Bochum, Germany.,International Graduate School of Neuroscience, Ruhr University Bochum, Bochum, Germany
| | - Hardy Hagena
- Department of Neurophysiology, Medical Faculty, Ruhr University Bochum, Bochum, Germany
| | - Denise Manahan-Vaughan
- Department of Neurophysiology, Medical Faculty, Ruhr University Bochum, Bochum, Germany.,International Graduate School of Neuroscience, Ruhr University Bochum, Bochum, Germany
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21
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Nirogi R, Mohammed AR, Shinde AK, Bogaraju N, Gagginapalli SR, Ravella SR, Kota L, Bhyrapuneni G, Muddana NR, Benade V, Palacharla RC, Jayarajan P, Subramanian R, Goyal VK. Synthesis and SAR of Imidazo[1,5-a]pyridine derivatives as 5-HT4 receptor partial agonists for the treatment of cognitive disorders associated with Alzheimer's disease. Eur J Med Chem 2015; 103:289-301. [PMID: 26363507 DOI: 10.1016/j.ejmech.2015.08.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 11/16/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease which has a higher prevalence and incidence in older people. The need for improved AD therapies is unmet. The 5-hydroxytryptamine4 receptor (5-HT4R) partial agonists may be of benefit for both the symptomatic and disease-modifying treatment of cognitive disorders associated with AD. Herein, we report the design, synthesis and SAR of imidazo[1,5-a] pyridine derivatives as 5-HT4R partial agonists. The focused SAR, optimization of ADME properties resulted the discovery of compound 5a as potent, selective, brain penetrant 5-HT4 partial agonist as a lead compound with good ADME properties and efficacy in both symptomatic and disease modifying animal models of cognition.
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Affiliation(s)
- Ramakrishna Nirogi
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India.
| | - Abdul Rasheed Mohammed
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Anil K Shinde
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Narsimha Bogaraju
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Shankar Reddy Gagginapalli
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Srinivasa Rao Ravella
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Laxman Kota
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Gopinadh Bhyrapuneni
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Nageswara Rao Muddana
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Vijay Benade
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Raghava Chowdary Palacharla
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Pradeep Jayarajan
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Ramkumar Subramanian
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
| | - Vinod Kumar Goyal
- Discovery Research, Suven Life Sciences Ltd., Serene Chambers, Road-5, Avenue-7, Banjara Hills, Hyderabad, 500 034, India
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22
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Lo AC, De Maeyer JH, Vermaercke B, Callaerts-Vegh Z, Schuurkes JAJ, D'Hooge R. SSP-002392, a new 5-HT4 receptor agonist, dose-dependently reverses scopolamine-induced learning and memory impairments in C57Bl/6 mice. Neuropharmacology 2014; 85:178-89. [PMID: 24863046 DOI: 10.1016/j.neuropharm.2014.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 05/09/2014] [Accepted: 05/10/2014] [Indexed: 10/25/2022]
Abstract
5-HT4 receptors (5-HT4R) are suggested to affect learning and memory processes. Earlier studies have shown that animals treated with 5-HT4R agonists, often with limited selectivity, show improved learning and memory with retention memory often being assessed immediately after or within 24 h after the last training session. In this study, we characterized the effect of pre-training treatment with the selective 5-HT4R agonist SSP-002392 on memory acquisition and the associated long-term memory retrieval in animal models of impaired cognition. Pre-training treatment with SSP-002392 (0.3 mg/kg, 1.5 mg/kg and 7.5 mg/kg p.o.) dose-dependently inhibited the cognitive deficits induced by scopolamine (0.5 mg/kg s.c.) in two different behavioral tasks: passive avoidance and Morris water maze. In the Morris water maze, spatial learning was significantly improved after treatment with SSP-002392 translating in an accelerated and more efficient localization of the hidden platform compared to scopolamine-treated controls. Moreover, retention memory was assessed 24 h (passive avoidance) and 72 h (Morris water maze) after the last training session of cognitive-impaired animals and this was significantly improved in animals treated with SSP-002392 prior to the training sessions. Furthermore, the effects of SSP-002392 were comparable to galanthamine hydrobromide. We conclude that SSP-002392 has potential as a memory-enhancing compound.
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Affiliation(s)
- Adrian C Lo
- Laboratory of Biological Psychology, KU Leuven, Leuven, Belgium; Leuven Institute for Neuroscience & Disease (LIND), Leuven, Belgium
| | | | - Ben Vermaercke
- Laboratory of Biological Psychology, KU Leuven, Leuven, Belgium; Leuven Institute for Neuroscience & Disease (LIND), Leuven, Belgium
| | - Zsuzsanna Callaerts-Vegh
- Laboratory of Biological Psychology, KU Leuven, Leuven, Belgium; Leuven Institute for Neuroscience & Disease (LIND), Leuven, Belgium
| | | | - Rudi D'Hooge
- Laboratory of Biological Psychology, KU Leuven, Leuven, Belgium; Leuven Institute for Neuroscience & Disease (LIND), Leuven, Belgium.
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Chegini HR, Nasehi M, Zarrindast MR. Differential role of the basolateral amygdala 5-HT3 and 5-HT4 serotonin receptors upon ACPA-induced anxiolytic-like behaviors and emotional memory deficit in mice. Behav Brain Res 2014; 261:114-26. [DOI: 10.1016/j.bbr.2013.12.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 11/26/2013] [Accepted: 12/05/2013] [Indexed: 10/25/2022]
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Wawra M, Fidzinski P, Heinemann U, Mody I, Behr J. 5-HT4-receptors modulate induction of long-term depression but not potentiation at hippocampal output synapses in acute rat brain slices. PLoS One 2014; 9:e88085. [PMID: 24505387 PMCID: PMC3914937 DOI: 10.1371/journal.pone.0088085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 01/06/2014] [Indexed: 11/19/2022] Open
Abstract
The subiculum is the principal target of CA1 pyramidal cells and mediates hippocampal output to various cortical and subcortical regions of the brain. The majority of subicular pyramidal cells are burst-spiking neurons. Previous studies indicated that high frequency stimulation in subicular burst-spiking cells causes presynaptic NMDA-receptor dependent long-term potentiation (LTP) whereas low frequency stimulation induces postsynaptic NMDA-receptor-dependent long-term depression (LTD). In the present study, we investigate the effect of 5-hydroxytryptamine type 4 (5-HT4) receptor activation and blockade on both forms of synaptic plasticity in burst-spiking cells. We demonstrate that neither activation nor block of 5-HT4 receptors modulate the induction or expression of LTP. In contrast, activation of 5-HT4 receptors facilitates expression of LTD, and block of the 5-HT4 receptor prevents induction of short-term depression and LTD. As 5-HT4 receptors are positively coupled to adenylate cyclase 1 (AC1), 5-HT4 receptors might modulate PKA activity through AC1. Since LTD is blocked in the presence of 5-HT4 receptor antagonists, our data are consistent with 5-HT4 receptor activation by ambient serotonin or intrinsically active 5-HT4 receptors. Our findings provide new insight into aminergic modulation of hippocampal output.
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Affiliation(s)
- Matthias Wawra
- Department of Psychiatry and Psychotherapy, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Institute of Neurophysiology, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Exzellenzcluster NeuroCure, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
| | - Pawel Fidzinski
- Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
| | - Uwe Heinemann
- Institute of Neurophysiology, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Exzellenzcluster NeuroCure, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
| | - Istvan Mody
- Exzellenzcluster NeuroCure, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Joachim Behr
- Department of Psychiatry and Psychotherapy, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Institute of Neurophysiology, Charité Universitätsmedizin Berlin, Berlin, Berlin, Germany
- Department of Psychiatry, Psychotherapy and Psychosomatics, Ruppiner Kliniken, Neuruppin, Brandenburg, Germany
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Giannoni P, Gaven F, de Bundel D, Baranger K, Marchetti-Gauthier E, Roman FS, Valjent E, Marin P, Bockaert J, Rivera S, Claeysen S. Early administration of RS 67333, a specific 5-HT4 receptor agonist, prevents amyloidogenesis and behavioral deficits in the 5XFAD mouse model of Alzheimer's disease. Front Aging Neurosci 2013; 5:96. [PMID: 24399967 PMCID: PMC3871961 DOI: 10.3389/fnagi.2013.00096] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 12/06/2013] [Indexed: 01/14/2023] Open
Abstract
Amyloid β (Aβ) accumulation is considered the main culprit in the pathogenesis of Alzheimer’s disease (AD). Recent studies suggest that decreasing Aβ production at very early stages of AD could be a promising strategy to slow down disease progression. Serotonin 5-HT4 receptor activation stimulates α-cleavage of the amyloid precursor protein (APP), leading to the release of the soluble and neurotrophic sAPPα fragment and thus precluding Aβ formation. Using the 5XFAD mouse model of AD that shows accelerated Aβ deposition, we investigated the effect of chronic treatments (treatment onset at different ages and different durations) with the 5-HT4 receptor agonist RS 67333 during the asymptomatic phase of the disease. Chronic administration of RS 67333 decreased concomitantly the number of amyloid plaques and the level of Aβ species. Reduction of Aβ levels was accompanied by a striking decrease in hippocampal astrogliosis and microgliosis. RS 67333 also transiently increased sAPPα concentration in the cerebrospinal fluid and brain. Moreover, a specific 5-HT4 receptor antagonist (RS 39604) prevented the RS 67333-mediated reduction of the amyloid pathology. Finally, the novel object recognition test deficits of 5XFAD mice were reversed by chronic treatment with RS 67333. Collectively, these results strongly highlight this 5-HT4 receptor agonist as a promising disease modifying-agent for AD.
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Affiliation(s)
- Patrizia Giannoni
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Florence Gaven
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Dimitri de Bundel
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Kevin Baranger
- Aix-Marseille Univ, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France ; CNRS, NICN, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France ; Service de Neurologie et de Neuropsychologie, CHU La Timone, AP-HM Marseille, France
| | - Evelyne Marchetti-Gauthier
- Aix-Marseille Univ, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France ; CNRS, NICN, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France
| | - François S Roman
- Aix-Marseille Univ, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France ; CNRS, NICN, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France
| | - Emmanuel Valjent
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Philippe Marin
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Joël Bockaert
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
| | - Santiago Rivera
- Aix-Marseille Univ, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France ; CNRS, NICN, Neurobiologie des Interactions Cellulaires et Neurophysiopathologie, UMR 7259 Marseille, France
| | - Sylvie Claeysen
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle Montpellier, France ; Inserm, U661 Montpellier, France ; Universités de Montpellier 1 and 2, UMR-5203 Montpellier, France
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Sawant-Basak A, Coffman KJ, Walker GS, Ryder TF, Tseng E, Miller E, Lee C, Vanase-Frawley MA, Wong JW, Brodney MA, Rapp T, Obach RS. Metabolism of a Serotonin-4 Receptor Partial Agonist 4-{4-[4-Tetrahydrofuran-3-yloxy)-Benzo[d]Isoxazol-3-yloxymethyl]-Piperidin-1-ylmethyl}-Tetrahydropyran-4-ol (TBPT): Identification of an Unusual Pharmacologically Active Cyclized Oxazolidine Metabolite in Human. J Pharm Sci 2013; 102:3277-93. [DOI: 10.1002/jps.23542] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/14/2013] [Accepted: 03/15/2013] [Indexed: 11/11/2022]
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Masuda T, Nishikawa H, Inoue T, Toda H, Nakagawa S, Boku S, Koyama T. 5-HT depletion, but not 5-HT1A antagonist, prevents the anxiolytic-like effect of citalopram in rat contextual conditioned fear stress model. Acta Neuropsychiatr 2013; 25:77-84. [PMID: 25287308 DOI: 10.1111/j.1601-5215.2012.00669.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Selective serotonin reuptake inhibitors (SSRIs) have been widely used in the treatment of most anxiety disorders. In this study, to clarify the mechanism of the anxiolytic effect, we investigated the mechanism underlying the effect of the SSRI citalopram on rat contextual conditioned fear stress (CFS), an animal model of anxiety. METHODS Rats individually received footshocks in a shock chamber. More than 1 day later, they were given citalopram and/or dl-p-chlorophenylalanine (PCPA), various subtype-selective serotonin (5-HT) receptor antagonists: the 5-HT1A receptor antagonist WAY 100635, the 5-HT2A receptor antagonist MDL 100907, the 5-HT2C receptor antagonist SB 242084, the 5-HT3 receptor antagonist tropisetron, the 5-HT4 receptor antagonist GR 125487, the 5-HT6 receptor antagonist SB 258585 or the 5-HT7 receptor antagonist SB 269970. After drug administration, freezing behaviour, which was used as an index of anxiety, was analysed in the same shock chamber without shocks. RESULTS Citalopram dose dependently reduced conditioned freezing behaviour. The anxiolytic-like effect of citalopram was prevented completely by pretreatment with the 5-HT-depleting agent PCPA, but not by the 5-HT1A receptor antagonist WAY 100635. Furthermore, none of the subtype-selective 5-HT receptor antagonists significantly affected conditioned freezing or affected the anxiolytic-like effect of citalopram. CONCLUSION The anxiolytic-like effect of citalopram in contextual CFS model depends on 5-HT availability. In addition, contextual CFS model is suggested to be completely different from conventional anxiety models in neural mechanism or manners of serotonergic involvement. However, further studies are needed to identify the pharmacological mechanisms responsible for the anxiolytic-like effect of citalopram.
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Affiliation(s)
- Takahiro Masuda
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Hiroyuki Nishikawa
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Takeshi Inoue
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Hiroyuki Toda
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Shin Nakagawa
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Shuken Boku
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - Tsukasa Koyama
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
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Lucena GMRS, Matheus FC, Ferreira VM, Tessele PB, Azevedo MS, Cechinel-Filho V, Prediger RD. Effects of Ethanolic Extract and Naphthoquinones Obtained from the Bulbs ofCipura paludosaon Short-Term and Long-Term Memory: Involvement of Adenosine A1and A2AReceptors. Basic Clin Pharmacol Toxicol 2012; 112:229-35. [DOI: 10.1111/bcpt.12022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 09/26/2012] [Indexed: 11/27/2022]
Affiliation(s)
| | - Filipe C. Matheus
- Departamento de Farmacologia, Centro de Ciências Biológicas; Universidade Federal de Santa Catarina (UFSC); Florianópolis; SC; Brazil
| | - Vania M. Ferreira
- Faculdade de Ciências da Saúde; Universidade de Brasília (UnB); Brasília; DF; Brazil
| | - Priscila B. Tessele
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR); Curso de Farmácia-CCS, Universidade do Vale do Itajaí (UNIVALI); Itajaí; SC; Brazil
| | - Mariangela S. Azevedo
- Departamento de Química, Laboratórios de Fitoquímica; Produtos Naturais e Meio Ambiente, Universidade Federal de Rondônia (Labfito-UNIR); Porto Velho; RO; Brazil
| | - Valdir Cechinel-Filho
- Núcleo de Investigações Químico-Farmacêuticas (NIQFAR); Curso de Farmácia-CCS, Universidade do Vale do Itajaí (UNIVALI); Itajaí; SC; Brazil
| | - Rui D. Prediger
- Departamento de Farmacologia, Centro de Ciências Biológicas; Universidade Federal de Santa Catarina (UFSC); Florianópolis; SC; Brazil
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van der Kooij MA, Sandi C. Social memories in rodents: Methods, mechanisms and modulation by stress. Neurosci Biobehav Rev 2012; 36:1763-72. [DOI: 10.1016/j.neubiorev.2011.10.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 10/20/2011] [Accepted: 10/27/2011] [Indexed: 12/31/2022]
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Haahr ME, Fisher P, Holst K, Madsen K, Jensen CG, Marner L, Lehel S, Baaré W, Knudsen G, Hasselbalch S. The 5-HT4 receptor levels in hippocampus correlates inversely with memory test performance in humans. Hum Brain Mapp 2012; 34:3066-74. [PMID: 22736538 DOI: 10.1002/hbm.22123] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 04/10/2012] [Accepted: 04/20/2012] [Indexed: 11/07/2022] Open
Abstract
The cerebral serotonin (5-HT) system is involved in cognitive functions such as memory and learning and animal studies have repeatedly shown that stimulation of the 5-HT type 4 receptor (5-HT4 R) facilitates memory and learning and further that the 5-HT4 R modulates cellular memory processes in hippocampus. However, any associations between memory functions and the expression of the 5-HT4 R in the human hippocampus have not been investigated. Using positron emission tomography with the tracer [(11) C]SB207145 and Reys Auditory Verbal Learning Test we aimed to examine the individual variation of the 5-HT4R binding in hippocampus in relation to memory acquisition and consolidation in healthy young volunteers. We found significant, negative associations between the immediate recall scores and left and right hippocampal BPND , (p = 0.009 and p = 0.010 respectively) and between the right hippocampal BPND and delayed recall (p = 0.014). These findings provide evidence that the 5-HT4 R is associated with memory functions in the human hippocampus and potentially pharmacological stimulation of the receptor may improve episodic memory.
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Affiliation(s)
- Mette Ewers Haahr
- Neurobiology Research Unit and Center of Integrated Molecular Brain Imaging, University Hospital Rigshospitalet, 24 Juliane Maries Vej, 2100 Copenhagen, Denmark; Danish Research Centre for Magnetic Resonance, University Hospital Hvidovre, 30 Kettegård Allé, 2650 Hvidovre, Denmark
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Jacobs SA, Tsien JZ. genetic overexpression of NR2B subunit enhances social recognition memory for different strains and species. PLoS One 2012; 7:e36387. [PMID: 22558458 PMCID: PMC3338680 DOI: 10.1371/journal.pone.0036387] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 03/31/2012] [Indexed: 11/25/2022] Open
Abstract
The ability to learn and remember conspecifics is essential for the establishment and maintenance of social groups. Many animals, including humans, primates and rodents, depend on stable social relationships for survival. Social learning and social recognition have become emerging areas of interest for neuroscientists but are still not well understood. It has been established that several hormones play a role in the modulation of social recognition including estrogen, oxytocin and arginine vasopression. Relatively few studies have investigated how social recognition might be improved or enhanced. In this study, we investigate the role of the NMDA receptor in social recognition memory, specifically the consequences of altering the ratio of the NR2B∶NR2A subunits in the forebrain regions in social behavior. We produced transgenic mice in which the NR2B subunit of the NMDA receptor was overexpressed postnatally in the excitatory neurons of the forebrain areas including the cortex, amygdala and hippocampus. We investigated the ability of both our transgenic animals and their wild-type littermate to learn and remember juvenile conspecifics using both 1-hr and 24-hr memory tests. Our experiments show that the wild-type animals and NR2B transgenic mice preformed similarly in the 1-hr test. However, transgenic mice showed better performances in 24-hr tests of recognizing animals of a different strain or animals of a different species. We conclude that NR2B overexpression in the forebrain enhances social recognition memory for different strains and animal species.
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Affiliation(s)
- Stephanie A. Jacobs
- Brain and Behavior Discovery Institute and Department of Neurology, Medical College of Georgia, Georgia Health Sciences University, Augusta, Georgia, United States of America
| | - Joe Z. Tsien
- Brain and Behavior Discovery Institute and Department of Neurology, Medical College of Georgia, Georgia Health Sciences University, Augusta, Georgia, United States of America
- * E-mail:
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Johnson DE, Drummond E, Grimwood S, Sawant-Basak A, Miller E, Tseng E, McDowell LL, Vanase-Frawley MA, Fisher KE, Rubitski DM, Stutzman-Engwall KJ, Nelson RT, Horner WE, Gorczyca RR, Hajos M, Siok CJ. The 5-hydroxytryptamine4 receptor agonists prucalopride and PRX-03140 increase acetylcholine and histamine levels in the rat prefrontal cortex and the power of stimulated hippocampal θ oscillations. J Pharmacol Exp Ther 2012; 341:681-91. [PMID: 22408061 DOI: 10.1124/jpet.112.192351] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
5-Hydroxytryptamine (5-HT)(4) receptor agonists reportedly stimulate brain acetylcholine (ACh) release, a property that might provide a new pharmacological approach for treating cognitive deficits associated with Alzheimer's disease. The purpose of this study was to compare the binding affinities, functional activities, and effects on neuropharmacological responses associated with cognition of two highly selective 5-HT(4) receptor agonists, prucalopride and 6,7-dihydro-4-hydroxy-7-isopropyl-6-oxo-N-[3-(piperidin-1-yl)propyl]thieno[2,3-b]pyridine-5-carboxamide (PRX-03140). In vitro, prucalopride and PRX-03140 bound to native rat brain 5-HT(4) receptors with K(i) values of 30 nM and 110 nM, respectively, and increased cAMP production in human embryonic kidney-293 cells expressing recombinant rat 5-HT(4) receptors. In vivo receptor occupancy studies established that prucalopride and PRX-03140 were able to penetrate the brain and bound to 5-HT(4) receptors in rat brain, achieving 50% receptor occupancy at free brain exposures of 330 nM and 130 nM, respectively. Rat microdialysis studies revealed that prucalopride maximally increased ACh and histamine levels in the prefrontal cortex at 5 and 10 mg/kg, whereas PRX-03140 significantly increased cortical histamine levels at 50 mg/kg, failing to affect ACh release at doses lower than 150 mg/kg. In combination studies, donepezil-induced increases in cortical ACh levels were potentiated by prucalopride and PRX-03140. Electrophysiological studies in rats demonstrated that both compounds increased the power of brainstem-stimulated hippocampal θ oscillations at 5.6 mg/kg. These findings show for the first time that the 5-HT(4) receptor agonists prucalopride and PRX-03140 can increase cortical ACh and histamine levels, augment donepezil-induced ACh increases, and increase stimulated-hippocampal θ power, all neuropharmacological parameters consistent with potential positive effects on cognitive processes.
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Affiliation(s)
- David E Johnson
- Neuroscience Research Unit, Pfizer Global Research and Development, Eastern Point Rd., Groton, CT 06340, USA.
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Hotte M, Dauphin F, Freret T, Boulouard M, Levallet G. A biphasic and brain-region selective down-regulation of cyclic adenosine monophosphate concentrations supports object recognition in the rat. PLoS One 2012; 7:e32244. [PMID: 22359674 PMCID: PMC3281138 DOI: 10.1371/journal.pone.0032244] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 01/23/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND We aimed to further understand the relationship between cAMP concentration and mnesic performance. METHODS AND FINDINGS Rats were injected with milrinone (PDE3 inhibitor, 0.3 mg/kg, i.p.), rolipram (PDE4 inhibitor, 0.3 mg/kg, i.p.) and/or the selective 5-HT4R agonist RS 67333 (1 mg/kg, i.p.) before testing in the object recognition paradigm. Cyclic AMP concentrations were measured in brain structures linked to episodic-like memory (i.e. hippocampus, prefrontal and perirhinal cortices) before or after either the sample or the testing phase. Except in the hippocampus of rolipram treated-rats, all treatment increased cAMP levels in each brain sub-region studied before the sample phase. After the sample phase, cAMP levels were significantly increased in hippocampus (1.8 fold), prefrontal (1.3 fold) and perirhinal (1.3 fold) cortices from controls rat while decreased in prefrontal cortex (∼0.83 to 0.62 fold) from drug-treated rats (except for milrinone+RS 67333 treatment). After the testing phase, cAMP concentrations were still increased in both the hippocampus (2.76 fold) and the perirhinal cortex (2.1 fold) from controls animals. Minor increase were reported in hippocampus and perirhinal cortex from both rolipram (respectively, 1.44 fold and 1.70 fold) and milrinone (respectively 1.46 fold and 1.56 fold)-treated rat. Following the paradigm, cAMP levels were significantly lower in the hippocampus, prefrontal and perirhinal cortices from drug-treated rat when compared to controls animals, however, only drug-treated rats spent longer time exploring the novel object during the testing phase (inter-phase interval of 4 h). CONCLUSIONS Our results strongly suggest that a "pre-sample" early increase in cAMP levels followed by a specific lowering of cAMP concentrations in each brain sub-region linked to the object recognition paradigm support learning efficacy after a middle-term delay.
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Affiliation(s)
- Maïte Hotte
- Université de Caen Basse–Normandie, Groupe Mémoire et Plasticité comportementale (GMPc), EA4259, IFR 146, Caen, France
- Université de Rouen, NeoVasc, EA 4309, IFRMP23, IHURBM, Rouen, France
| | - François Dauphin
- Université de Caen Basse–Normandie, Groupe Mémoire et Plasticité comportementale (GMPc), EA4259, IFR 146, Caen, France
| | - Thomas Freret
- Université de Caen Basse–Normandie, Groupe Mémoire et Plasticité comportementale (GMPc), EA4259, IFR 146, Caen, France
| | - Michel Boulouard
- Université de Caen Basse–Normandie, Groupe Mémoire et Plasticité comportementale (GMPc), EA4259, IFR 146, Caen, France
| | - Guenaëlle Levallet
- Université de Caen Basse–Normandie, Groupe Mémoire et Plasticité comportementale (GMPc), EA4259, IFR 146, Caen, France
- CHU de Caen, Service d'Anatomie Pathologie, Caen, France
- * E-mail:
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Abstract
Mounting evidence accumulated over the past few years indicates that the neurotransmitter serotonin plays a significant role in cognition. As a drug target, serotonin receptors have received notable attention due in particular to the role of several serotonin-receptor subclasses in cognition and memory. The intimate anatomical and neurochemical association of the serotonergic system with brain areas that regulate memory and learning has directed current drug discovery programmes to focus on this system as a major therapeutic drug target. Thus far, none of these programmes has yielded unambiguous data that suggest that any of the new drug entities possesses disease-modifying properties, and significantly more research in this promising area of investigation is required. Compounds are currently being investigated for activity against serotonin 5-HT(1), 5-HT(4) and 5-HT(6) receptors. This review concludes that most work done in the development of selective serotonin receptor ligands is in the pre-clinical or early clinical phase. Also, while many of these compounds will likely find application as adjuvant therapy in the symptomatic treatment of Alzheimer's disease, there are currently only a few drug entities with activity against serotonin receptors that may offer the potential to alter the progression of the disease.
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Affiliation(s)
- Werner J Geldenhuys
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, USA
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Mathiasen JR, DiCamillo A. Social recognition assay in the rat. CURRENT PROTOCOLS IN NEUROSCIENCE 2011; Chapter 8:Unit 8.5I. [PMID: 20938925 DOI: 10.1002/0471142301.ns0805is53] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Neuropsychiatric disorders encompass a broad patient population in a variety of disease states across all age groups and are often accompanied by deficits in short-term/working memory. However, most preclinical models that allow for an assessment of cognitive enhancement do not provide robust behavioral readouts with a level of throughput sufficient to support modern drug discovery efforts. The rat social recognition assay presented in this unit is one exception that has been increasingly employed to test new chemical entities for enhancing cognitive activity. The test is simple in design and takes advantage of the spontaneous behavior of rats to investigate conspecifics. The protocol in this unit is designed to evaluate the effects of a test substance on the short-term/working memory of adult male rats employing 30-min or 2-hr pretreatment times.
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Etiévant A, Lambás-Señas L, Abrial E, Bétry C, Haddjeri N, Lucas G. Connection re-established: neurotransmission between the medial prefrontal cortex and serotonergic neurons offers perspectives for fast antidepressant action. ACTA ACUST UNITED AC 2011. [DOI: 10.2217/npy.11.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mice with genetic deletion of the heparin-binding growth factor midkine exhibit early preclinical features of Parkinson’s disease. J Neural Transm (Vienna) 2011; 118:1215-25. [DOI: 10.1007/s00702-010-0568-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 12/17/2010] [Indexed: 12/30/2022]
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Fletcher ML, Chen WR. Neural correlates of olfactory learning: Critical role of centrifugal neuromodulation. Learn Mem 2010; 17:561-70. [PMID: 20980444 DOI: 10.1101/lm.941510] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The mammalian olfactory system is well established for its remarkable capability of undergoing experience-dependent plasticity. Although this process involves changes at multiple stages throughout the central olfactory pathway, even the early stages of processing, such as the olfactory bulb and piriform cortex, can display a high degree of plasticity. As in other sensory systems, this plasticity can be controlled by centrifugal inputs from brain regions known to be involved in attention and learning processes. Specifically, both the bulb and cortex receive heavy inputs from cholinergic, noradrenergic, and serotonergic modulatory systems. These neuromodulators are shown to have profound effects on both odor processing and odor memory by acting on both inhibitory local interneurons and output neurons in both regions.
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Affiliation(s)
- Max L Fletcher
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA.
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Hallegger M, Sobala A, Smith CWJ. Four exons of the serotonin receptor 4 gene are associated with multiple distant branch points. RNA (NEW YORK, N.Y.) 2010; 16:839-51. [PMID: 20197377 PMCID: PMC2844630 DOI: 10.1261/rna.2013110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Splicing of vertebrate introns involves recognition of three consensus elements at the 3' end. The branch point (BP) and polypyrimidine tract (PPT) are usually located within 40 nucleotides (nt) of the 3' splice site (3' ss), AG, but can be much more distant. A characteristic of the region between distant BPs (dBPs) and the 3' ss is the absence of intervening AG dinucleotides, leading to its designation as the "AG exclusion zone" (AGEZ). The human HTR4 gene, which encodes serotonin receptor 4 and has been associated with schizophrenia, bipolar disease, and gastrointestinal disorders, has four exons with extensive AGEZs. We have mapped the BPs for HTR4 exons 3, 4, 5, and g generated by in vitro splicing, and validated them by mutagenesis in exon-trapping vectors. All exons used dBPs up to 273 nt upstream of the exon. Strikingly, exons 4 and 5 used combinations of both distant and conventionally located BPs, suggesting that successful splicing of these exons can occur by distinct pathways. Our results emphasize the importance for single nucleotide polymorphism resequencing projects to take account of potential dBPs, as the extended AGEZs are vulnerable to mutations that could affect splicing itself or regulation of alternative splicing.
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Affiliation(s)
- Martina Hallegger
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom
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Aguiar AS, Araújo AL, da-Cunha TR, Speck AE, Ignácio ZM, De-Mello N, Prediger RD. Physical exercise improves motor and short-term social memory deficits in reserpinized rats. Brain Res Bull 2009; 79:452-7. [DOI: 10.1016/j.brainresbull.2009.05.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 05/09/2009] [Accepted: 05/13/2009] [Indexed: 12/29/2022]
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Lemaître S, Lepailleur A, Bureau R, Butt-Gueulle S, Lelong-Boulouard V, Duchatelle P, Boulouard M, Dumuis A, Daveu C, Lezoualc’h F, Pfeiffer B, Dauphin F, Rault S. Novel antagonists of serotonin-4 receptors: Synthesis and biological evaluation of pyrrolothienopyrazines. Bioorg Med Chem 2009; 17:2607-22. [DOI: 10.1016/j.bmc.2008.11.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 11/13/2008] [Accepted: 11/15/2008] [Indexed: 10/21/2022]
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Levallet G, Hotte M, Boulouard M, Dauphin F. Increased particulate phosphodiesterase 4 in the prefrontal cortex supports 5-HT4 receptor-induced improvement of object recognition memory in the rat. Psychopharmacology (Berl) 2009; 202:125-39. [PMID: 18712363 DOI: 10.1007/s00213-008-1283-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 07/28/2008] [Indexed: 10/21/2022]
Abstract
RATIONALE Serotonin receptors (5-HT4Rs) are critical to both short-term and long-term memory processes. These receptors mainly trigger the cyclic adenosine monophosphate (cAMP)/protein kinase A signaling pathway, which is regulated by cAMP phosphodiesterases (PDEs). OBJECTIVES We investigated the mechanisms underlying the effect of the selective activation of 5-HT4R on information acquisition in an object recognition memory task and the putative regulation of PDE. MATERIALS AND METHODS The effect of RS 67333 (1 mg/kg, intraperitoneally [i.p.], injected 30 min before the sample phase) was examined at different delay intervals in an object recognition task in Sprague-Dawley rats. After the testing trial, PDE activity of brain regions implicated in this task was assayed. RESULTS RS 67333-treated rats spent more time exploring the novel object after a 15-min (P < 0.001) or 4-h delay (P < 0.01) but not after a 24-h delay, whereas control animals showed no preference for the novel object for delays greater than 15 min. We characterized the specific patterns and kinetic properties of PDE in the prefrontal and perirhinal cortices as well as in the hippocampus. We demonstrated that particulate PDE activities increase in both the prefrontal cortex and hippocampus following 5-HT4R stimulation. In the prefrontal cortex, PDE4 activities support the RS 67333-induced modification of PDE activities, whereas in the hippocampus, all cAMP-PDE activities varied. In contrast, particulate PDE variation in the hippocampus was not found to support improvement of recognition memory after a 4-h delay. CONCLUSIONS We provide evidence that the increase in particulate PDE4 activity in the prefrontal cortex supports the 5-HT4R-induced increase in information acquisition.
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Affiliation(s)
- Guénaëlle Levallet
- Laboratoire de Pharmacologie-Physiologie, Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen Basse-Normandie, Caen, France.
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Effect of 5-HT7 antagonist SB-269970 in the modulation of working and reference memory in the rat. Behav Brain Res 2008; 195:164-70. [DOI: 10.1016/j.bbr.2007.12.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Revised: 12/20/2007] [Accepted: 12/20/2007] [Indexed: 12/12/2022]
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Varin T, Saettel N, Villain J, Lesnard A, Dauphin F, Bureau R, Rault S. 3D Pharmacophore, hierarchical methods, and 5-HT4 receptor binding data. J Enzyme Inhib Med Chem 2008; 23:593-603. [DOI: 10.1080/14756360802204748] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Thibault Varin
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - Nicolas Saettel
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - Jonathan Villain
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - Aurelien Lesnard
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - François Dauphin
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - Ronan Bureau
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
| | - Sylvain Rault
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, Basse-Normandie, U.F.R. des Sciences Pharmaceutiques, 5, rue Vaubénard, 14032 Caen Cedex, France
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Bockaert J, Claeysen S, Compan V, Dumuis A. 5-HT(4) receptors: history, molecular pharmacology and brain functions. Neuropharmacology 2008; 55:922-31. [PMID: 18603269 DOI: 10.1016/j.neuropharm.2008.05.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Revised: 05/07/2008] [Accepted: 05/09/2008] [Indexed: 11/17/2022]
Abstract
Twenty years ago, we started the characterization of a 5-HT receptor coupled to cAMP production in neurons. This receptor obviously had a different pharmacology to the other 5-HT receptors described at that time, i.e. the 5-HT(1), 5-HT(2), 5-HT(3) receptors. We proposed to name it the 5-HT(4) receptor. Nowadays, 5-HT(4) receptors are one of the most studied GPCRs belonging to the "rhodopsin" family. Thanks to the existence of a great variety of ligands with inverse agonist, partial agonist, agonist and antagonist profiles, the pharmacological and physiological properties of this receptor are beginning to emerge. Although some 5-HT(4) partial agonists have been on the market for gastro-intestinal pathologies, 5-HT(4) receptor drugs have still to be commercialized for brain disorders. However, since 5-HT(4) receptors have recognized effects on memory, depression and feeding in animal models, there is still hope for a therapeutic destiny of this interesting target in brain disorders.
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Affiliation(s)
- Joël Bockaert
- CNRS UMR 5203, Institut de Génomique Fonctionnelle, Montpellier, France.
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Marchetti E, Jacquet M, Jeltsch H, Migliorati M, Nivet E, Cassel JC, Roman FS. Complete recovery of olfactory associative learning by activation of 5-HT4 receptors after dentate granule cell damage in rats. Neurobiol Learn Mem 2008; 90:185-91. [PMID: 18485752 DOI: 10.1016/j.nlm.2008.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Revised: 03/31/2008] [Accepted: 03/31/2008] [Indexed: 10/22/2022]
Abstract
Bilateral intradentate injections of 3.0microg of colchicine induced a substantial loss of granule cells and damage to the overlying pyramidal cell layer in region CA1 in adult male Long-Evans rats. All rats with such lesions showed a significant associative learning deficit in an olfactory discrimination task, while being unimpaired in the procedural component of this task. Injection of a partial selective 5-HT(4) agonist (SL65.0155; 0.01mg/kg, i.p., vs. saline) before the third of six training sessions enabled complete recovery of associative learning performance in the lesioned rats. Activation of 5-HT(4) receptors by a selective agonist such as SL65.0155 might therefore provide an opportunity to reduce learning and memory deficits associated with temporal lobe damage, and could be useful for the symptomatic treatment of memory dysfunctions related to pathological aging such as Alzheimer's disease.
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Affiliation(s)
- E Marchetti
- Laboratoire de Neurobiologie des Processus Mnésiques, UMR 6149 CNRS Université de Provence, IFR 131 des Neurosciences et GDR 2905 du CNRS, Centre St. Charles, Pôle 3 C-3, Place Victor Hugo, 13331 Marseille Cedex 03, France
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Shimazaki T, Kaku A, Chaki S. Blockade of the metabotropic glutamate 2/3 receptors enhances social memory via the AMPA receptor in rats. Eur J Pharmacol 2007; 575:94-7. [PMID: 17727837 DOI: 10.1016/j.ejphar.2007.08.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 08/07/2007] [Accepted: 08/07/2007] [Indexed: 10/23/2022]
Abstract
The present study examined the role of mGlu(2/3) receptors in short-term social memory using the social recognition paradigm in rats in which an adult rat is exposed to the same juvenile rat in two successive interactions. Intraperitoneal administration of the mGlu(2/3) receptor antagonist MGS0039 (0.3-3 mg/kg) or the ampakine CX546 (0.3-3 mg/kg) significantly and dose-dependently reduced the adult rat's social investigation of the same juvenile rat during the second encounter which occurred 120 min after the first encounter, indicating that both MGS0039 and CX546 enhanced social recognition. Pretreatment with the AMPA receptor antagonist NBQX (0.1-1 mg/kg, s.c.) significantly attenuated the effects of MGS0039 (3 mg/kg, i.p.) in the social recognition test. These results suggest that the mGlu(2/3) receptor blockade increases social recognition memory, presumably through stimulation of the AMPA receptor.
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Affiliation(s)
- Toshiharu Shimazaki
- Medicinal Pharmacology Laboratory, Medical Research Laboratories, Taisho Pharmaceutical Co, Saitama, Saitama, Japan
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Micale V, Leggio GM, Mazzola C, Drago F. Cognitive effects of SL65.0155, a serotonin 5-HT4 receptor partial agonist, in animal models of amnesia. Brain Res 2006; 1121:207-15. [PMID: 17011531 DOI: 10.1016/j.brainres.2006.08.108] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2006] [Revised: 08/27/2006] [Accepted: 08/29/2006] [Indexed: 11/19/2022]
Abstract
Given that several data suggest the involvement of serotonergic (5-HT) system, particularly the serotonin 5-HT(4) receptors, in memory processes; this study was undertaken to investigate the role of serotonin 5-HT(4) receptors in different experimental models of amnesia in male Swiss mice or in male Sprague-Dawley rats, tested in learning and memory tasks. Amnesia was induced in mice by intracerebroventricular (i.c.v.) injection of beta-amyloid 1-42 fragment (BAP 1-42; 400 pmol/mouse) or of galanin (GAL) 1-29 (3 microg/mouse). Another group of animals was exposed to carbon monoxide (CO). Treatments were made 14 days, 15 min or 8 days prior to the learning trial of a step-through passive avoidance paradigm, respectively. Latency to re-enter the dark box appeared to be reduced in all treatment groups. Intraperitoneal (i.p.) administration of SL65.0155 (5-(8-amino-7-chloro-2,3-dihydro-1,4-benzodioxin-5-yl)-3-[1-(2-phenylethyl)-4-piperidinyl]-1,3,4-oxadiazol-2(3H)-one-monohydrochloride), a serotonin 5-HT(4) receptor partial agonist (1 mg/kg/day), for 7 days prior to the learning trial, inhibited the amnesic effect of both peptides increasing the latency to re-enter the dark box also in mice exposed to CO. In rats with ibotenate-induced lesions of the nucleus basalis magnocellularis (NBM) or prenatally exposed to methylazoxymethanol (MAM), SL65.0155 (1 mg/kg/day, i.p.) administered for 7 days, improved the learning and memory capacity in animals tested in shuttle-box active avoidance and radial maze tests. These findings give further support to the hypothesis of SL65.0155 cognition-enhancing activity across a range of tasks.
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Affiliation(s)
- Vincenzo Micale
- Department of Experimental and Clinical Pharmacology, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy
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Prediger RDS, Da Cunha C, Takahashi RN. Antagonistic interaction between adenosine A2A and dopamine D2 receptors modulates the social recognition memory in reserpine-treated rats. Behav Pharmacol 2005; 16:209-18. [PMID: 15961960 DOI: 10.1097/01.fbp.0000166825.62130.9a] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Increasing evidence suggests that antagonistic interactions between specific subtypes of adenosine and dopamine receptors in the basal ganglia are involved in the control of motor activity. However, there are few studies investigating this interaction in other brain regions and its role in additional functions. In the present study, we evaluated whether reserpine-treated rats (1.0 mg/kg, i.p.) exhibit altered social recognition memory abilities. The effects of acute administration of the dopamine receptor agonists 7,8-dihydroxy-1-phenyl-2,3,4,5-tetrahydro-1H-3 benzazepine (SKF 38393, dopamine D(1) receptor agonist) and quinpirole (dopamine D(2) receptor agonist), together with the adenosine receptor antagonists caffeine (non-selective), 8-cyclopentyl-1,3-dipropylxanthine (DPCPX, adenosine A(1) receptor antagonist) and 4-(2-[7-amino-2-{2-furyl}{1,2,4}triazolo-{2,3-a}{1,3,5}triazin-5-yl-amino]ethyl)phenol (ZM241385, adenosine A(2A) receptor antagonist), were also investigated. Twenty-four hours after treatment, reserpine-treated rats exhibited a significant disruption in the ability to recognize a juvenile rat after a short period of time. These animals did not show any motor deficit. The social recognition disruption induced by reserpine was reversed by acute treatment with quinpirole (0.05-0.1 mg/kg, i.p.), caffeine (10.0-30.0 mg/kg, i.p.) or ZM241385 (0.5-1.0 mg/kg, i.p.), but not with SKF 38393 (0.5-3.0 mg/kg, i.p.) or DPCPX (0.5-3.0 mg/kg, i.p.). Moreover, a synergistic response was observed following the co-administration of 'non-effective' doses of ZM241385 (0.1 mg/kg, i.p.) and quinpirole (0.01 mg/kg, i.p.). These results reinforce and extend the notion of antagonistic interactions between adenosine and dopamine receptors, and demonstrate, for the first time, that the blockade of adenosine A(2A) receptors and the activation of dopamine D(2) receptors can reverse the social recognition deficits induced by reserpine in rats.
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Affiliation(s)
- R D S Prediger
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, UFSC, Florianópolis-SC, Brazil
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Prediger RDS, Batista LC, Takahashi RN. Caffeine reverses age-related deficits in olfactory discrimination and social recognition memory in rats. Neurobiol Aging 2005; 26:957-64. [PMID: 15718055 DOI: 10.1016/j.neurobiolaging.2004.08.012] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2004] [Revised: 07/16/2004] [Accepted: 08/12/2004] [Indexed: 11/20/2022]
Abstract
Caffeine, a non-selective adenosine receptor antagonist, has been suggested as a potential drug to counteract age-related cognitive decline since critical changes in adenosinergic neurotransmission occur with aging. In the present study, olfactory discrimination and short-term social memory of 3, 6, 12 and 18 month-old rats were assessed with the olfactory discrimination and social recognition tasks, respectively. The actions of caffeine (3.0, 10.0 and 30.0 mg/kg, i.p.), the A1 receptor antagonist DPCPX (1.0 and 3.0 mg/kg, i.p.) and the A2A receptor antagonist ZM241385 (0.5 and 1.0 mg/kg, i.p.) in relation to age-related effects on olfactory functions were also studied. The 12 and 18 month-old rats exhibited significantly impaired performance in both models, demonstrating deficits in their odor discrimination and in their ability to recognize a juvenile rat after a short period of time. Acute treatment with caffeine or ZM241385, but not with DPCPX, reversed these age-related olfactory deficits. The present results suggest the participation of adenosine receptors in the control of olfactory functions and confirm the potential of caffeine for the treatment of aged-related cognitive decline.
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Affiliation(s)
- Rui D S Prediger
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, UFSC, Campus Trindade, 88049-900 Florianópolis, SC, Brazil
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