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Douchamps V, di Volo M, Torcini A, Battaglia D, Goutagny R. Gamma oscillatory complexity conveys behavioral information in hippocampal networks. Nat Commun 2024; 15:1849. [PMID: 38418832 PMCID: PMC10902292 DOI: 10.1038/s41467-024-46012-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024] Open
Abstract
The hippocampus and entorhinal cortex exhibit rich oscillatory patterns critical for cognitive functions. In the hippocampal region CA1, specific gamma-frequency oscillations, timed at different phases of the ongoing theta rhythm, are hypothesized to facilitate the integration of information from varied sources and contribute to distinct cognitive processes. Here, we show that gamma elements -a multidimensional characterization of transient gamma oscillatory episodes- occur at any frequency or phase relative to the ongoing theta rhythm across all CA1 layers in male mice. Despite their low power and stochastic-like nature, individual gamma elements still carry behavior-related information and computational modeling suggests that they reflect neuronal firing. Our findings challenge the idea of rigid gamma sub-bands, showing that behavior shapes ensembles of irregular gamma elements that evolve with learning and depend on hippocampal layers. Widespread gamma diversity, beyond randomness, may thus reflect complexity, likely functional but invisible to classic average-based analyses.
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Affiliation(s)
- Vincent Douchamps
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), CNRS, UMR 7364, Strasbourg, France
| | - Matteo di Volo
- Université Claude Bernard Lyon 1, Institut National de la Santé et de la Recherche Médicale, Stem Cell and Brain Research Institute, U1208, Bron, France
- CY Cergy Paris Université, Laboratoire de Physique Théorique et Modélisation (LPTM), CNRS, UMR 8089, 95302, Cergy-Pontoise, France
| | - Alessandro Torcini
- CY Cergy Paris Université, Laboratoire de Physique Théorique et Modélisation (LPTM), CNRS, UMR 8089, 95302, Cergy-Pontoise, France
- CNR - Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Demian Battaglia
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), CNRS, UMR 7364, Strasbourg, France.
- Aix-Marseille Université, Institut de Neurosciences des Systèmes (INS), INSERM, UMR 1106, Marseille, France.
- University of Strasbourg Institute for Advanced Studies (USIAS), Strasbourg, France.
| | - Romain Goutagny
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), CNRS, UMR 7364, Strasbourg, France.
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2
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Marriott BA, Do AD, Portet C, Thellier F, Goutagny R, Jackson J. Brain-state-dependent constraints on claustrocortical communication and function. Cell Rep 2024; 43:113620. [PMID: 38159273 DOI: 10.1016/j.celrep.2023.113620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/20/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024] Open
Abstract
Neural activity in the claustrum has been associated with a range of vigilance states, yet the activity patterns and efficacy of synaptic communication of identified claustrum neurons have not been thoroughly determined. Here, we show that claustrum neurons projecting to the retrosplenial cortex are most active during synchronized cortical states such as non-rapid eye movement (NREM) sleep and are suppressed during increased cortical desynchronization associated with arousal, movement, and REM sleep. The efficacy of claustrocortical signaling is increased during NREM and diminished during movement due in part to increased cholinergic tone. Finally, claustrum activation during NREM sleep enhances memory consolidation through the phase resetting of cortical delta waves. Therefore, claustrocortical communication is constrained to function most effectively during cognitive processes associated with synchronized cortical states, such as memory consolidation.
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Affiliation(s)
- Brian A Marriott
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G2H7, Canada
| | - Alison D Do
- Department of Physiology, University of Alberta, Edmonton, AB T6G2H7, Canada
| | - Coline Portet
- University of Strasbourg, Strasbourg, France; Laboratoire de Neurosciences Cognitives et Adaptatives, CNRS UMR7364, Strasbourg, France
| | - Flora Thellier
- University of Strasbourg, Strasbourg, France; Laboratoire de Neurosciences Cognitives et Adaptatives, CNRS UMR7364, Strasbourg, France
| | - Romain Goutagny
- University of Strasbourg, Strasbourg, France; Laboratoire de Neurosciences Cognitives et Adaptatives, CNRS UMR7364, Strasbourg, France.
| | - Jesse Jackson
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G2H7, Canada; Department of Physiology, University of Alberta, Edmonton, AB T6G2H7, Canada.
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3
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Aguilera M, Douchamps V, Battaglia D, Goutagny R. How Many Gammas? Redefining Hippocampal Theta-Gamma Dynamic During Spatial Learning. Front Behav Neurosci 2022; 16:811278. [PMID: 35177972 PMCID: PMC8843838 DOI: 10.3389/fnbeh.2022.811278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/03/2022] [Indexed: 01/09/2023] Open
Abstract
The hippocampal formation is one of the brain systems in which the functional roles of coordinated oscillations in information representation and communication are better studied. Within this circuit, neuronal oscillations are conceived as a mechanism to precisely coordinate upstream and downstream neuronal ensembles, underlying dynamic exchange of information. Within a global reference framework provided by theta (θ) oscillations, different gamma-frequency (γ) carriers would temporally segregate information originating from different sources, thereby allowing networks to disambiguate convergent inputs. Two γ sub-bands were thus defined according to their frequency (slow γ, 30–80 Hz; medium γ, 60–120 Hz) and differential power distribution across CA1 dendritic layers. According to this prevalent model, layer-specific γ oscillations in CA1 would reliably identify the temporal dynamics of afferent inputs and may therefore aid in identifying specific memory processes (encoding for medium γ vs. retrieval for slow γ). However, this influential view, derived from time-averages of either specific γ sub-bands or different projection methods, might not capture the complexity of CA1 θ-γ interactions. Recent studies investigating γ oscillations at the θ cycle timescale have revealed a more dynamic and diverse landscape of θ-γ motifs, with many θ cycles containing multiple γ bouts of various frequencies. To properly capture the hippocampal oscillatory complexity, we have argued in this review that we should consider the entirety of the data and its multidimensional complexity. This will call for a revision of the actual model and will require the use of new tools allowing the description of individual γ bouts in their full complexity.
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Affiliation(s)
- Matthieu Aguilera
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Faculté de Psychologie, Université de Strasbourg, Strasbourg, France
| | - Vincent Douchamps
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Faculté de Psychologie, Université de Strasbourg, Strasbourg, France
| | - Demian Battaglia
- Institut de Neurosciences des Systèmes, CNRS, Aix-Marseille Université, Marseille, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Romain Goutagny
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Faculté de Psychologie, Université de Strasbourg, Strasbourg, France
- *Correspondence: Romain Goutagny,
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Borcuk C, Héraud C, Herbeaux K, Diringer M, Panzer É, Scuto J, Hashimoto S, Saido TC, Saito T, Goutagny R, Battaglia D, Mathis C. Early memory deficits and extensive brain network disorganization in the AppNL-F/MAPT double knock-in mouse model of familial Alzheimer's disease. Aging Brain 2022; 2:100042. [PMID: 36908877 PMCID: PMC9997176 DOI: 10.1016/j.nbas.2022.100042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 10/18/2022] Open
Abstract
A critical challenge in current research on Alzheimer's disease (AD) is to clarify the relationship between network dysfunction and the emergence of subtle memory deficits in itspreclinical stage. The AppNL-F/MAPT double knock-in (dKI) model with humanized β-amyloid peptide (Aβ) and tau was used to investigate both memory and network dysfunctions at an early stage. Young male dKI mice (2 to 6 months) were tested in three tasks taxing different aspects of recognition memory affected in preclinical AD. An early deficit first appeared in the object-place association task at the age of 4 months, when increased levels of β-CTF and Aβ were detected in both the hippocampus and the medial temporal cortex, and tau pathology was found only in the medial temporal cortex. Object-place task-dependent c-Fos activation was then analyzed in 22 subregions across the medial prefrontal cortex, claustrum, retrosplenial cortex, and medial temporal lobe. Increased c-Fos activation was detected in the entorhinal cortex and the claustrum of dKI mice. During recall, network efficiency was reduced across cingulate regions with a major disruption of information flow through the retrosplenial cortex. Our findings suggest that early perirhinal-entorhinal pathology is associated with abnormal activity which may spread to downstream regions such as the claustrum, the medial prefrontal cortex and ultimately the key retrosplenial hub which relays information from frontal to temporal lobes. The similarity between our findings and those reported in preclinical stages of AD suggests that the AppNL-F/MAPT dKI model has a high potential for providing key insights into preclinical AD.
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Key Words
- AD, Alzheimer’s disease
- ADAD, autosomal dominant Alzheimer’s disease
- Associative memory
- CLA, claustrum
- Claustrum
- DMN, default mode network
- EI, exploration index
- FC, functional connectivity
- Functional connectivity
- MI, Memory index
- MTC, medial temporal cortex
- MTL, medial temporal lobe
- Medial temporal cortex
- NOR, novel object recognition
- OL, Object location
- OP, object-place
- PS, Pattern Separation
- Preclinical Alzheimer disease
- Retrosplenial cortex
- aMCI, amnestic mild cognitive impairment
- amyloid beta, Aβ
- dKI, AppNL-F/MAPT double knock-in
- ptau Thr 181, Thr181phosphorylated tau protein
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Affiliation(s)
- Christopher Borcuk
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Céline Héraud
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Karine Herbeaux
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Margot Diringer
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Élodie Panzer
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Jil Scuto
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Shoko Hashimoto
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-city, Saitama 351-0198, Japan
| | - Takaomi C Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-city, Saitama 351-0198, Japan
| | - Takashi Saito
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, 2-1 Hirosawa, Wako-city, Saitama 351-0198, Japan
| | - Romain Goutagny
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
| | - Demian Battaglia
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France.,University of Strasbourg Institute for Advanced Studies (USIAS), F-67000 Strasbourg, France.,Université d'Aix-Marseille, Inserm, Institut de Neurosciences des Systèmes (INS) UMR_S 1106, F-13005 Marseille, France
| | - Chantal Mathis
- Université de Strasbourg, CNRS, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA) UMR 7364, F-67000 Strasbourg, France
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Pousinha PA, Mouska X, Bianchi D, Temido-Ferreira M, Rajão-Saraiva J, Gomes R, Fernandez SP, Salgueiro-Pereira AR, Gandin C, Raymond EF, Barik J, Goutagny R, Bethus I, Lopes LV, Migliore M, Marie H. The Amyloid Precursor Protein C-Terminal Domain Alters CA1 Neuron Firing, Modifying Hippocampus Oscillations and Impairing Spatial Memory Encoding. Cell Rep 2020; 29:317-331.e5. [PMID: 31597094 DOI: 10.1016/j.celrep.2019.08.103] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 08/09/2019] [Accepted: 08/29/2019] [Indexed: 12/15/2022] Open
Abstract
There is a growing consensus that Alzheimer's disease (AD) involves failure of the homeostatic machinery, which underlies the firing stability of neural circuits. What are the culprits leading to neuron firing instability? The amyloid precursor protein (APP) is central to AD pathogenesis, and we recently showed that its intracellular domain (AICD) could modify synaptic signal integration. We now hypothesize that AICD modifies neuron firing activity, thus contributing to the disruption of memory processes. Using cellular, electrophysiological, and behavioral techniques, we show that pathological AICD levels weaken CA1 neuron firing activity through a gene-transcription-dependent mechanism. Furthermore, increased AICD production in hippocampal neurons modifies oscillatory activity, specifically in the γ-frequency range, and disrupts spatial memory task. Collectively, our data suggest that AICD pathological levels, observed in AD mouse models and in human patients, might contribute to progressive neuron homeostatic failure, driving the shift from normal aging to AD.
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Affiliation(s)
| | - Xavier Mouska
- Université Côte d'Azur, CNRS UMR 7275, IPMC, Valbonne, France
| | - Daniela Bianchi
- Institute of Biophysics, National Research Council, Palermo, Italy
| | - Mariana Temido-Ferreira
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Universidade de Lisboa, Lisboa, Portugal
| | - Joana Rajão-Saraiva
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Universidade de Lisboa, Lisboa, Portugal
| | - Rui Gomes
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Universidade de Lisboa, Lisboa, Portugal
| | | | | | - Carine Gandin
- Université Côte d'Azur, CNRS UMR 7275, IPMC, Valbonne, France
| | | | - Jacques Barik
- Université Côte d'Azur, CNRS UMR 7275, IPMC, Valbonne, France
| | - Romain Goutagny
- Université de Strasbourg, CNRS UMR 7364, LNCA, Strasbourg, France
| | - Ingrid Bethus
- Université Côte d'Azur, CNRS UMR 7275, IPMC, Valbonne, France
| | - Luisa V Lopes
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Universidade de Lisboa, Lisboa, Portugal
| | - Michele Migliore
- Institute of Biophysics, National Research Council, Palermo, Italy
| | - Hélène Marie
- Université Côte d'Azur, CNRS UMR 7275, IPMC, Valbonne, France
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Salgueiro-Pereira AR, Duprat F, Pousinha PA, Loucif A, Douchamps V, Regondi C, Ayrault M, Eugie M, Stunault MI, Escayg A, Goutagny R, Gnatkovsky V, Frassoni C, Marie H, Bethus I, Mantegazza M. A two-hit story: Seizures and genetic mutation interaction sets phenotype severity in SCN1A epilepsies. Neurobiol Dis 2019; 125:31-44. [DOI: 10.1016/j.nbd.2019.01.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/14/2018] [Accepted: 01/14/2019] [Indexed: 01/07/2023] Open
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7
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Fasano C, Rocchetti J, Pietrajtis K, Zander JF, Manseau F, Sakae DY, Marcus-Sells M, Ramet L, Morel LJ, Carrel D, Dumas S, Bolte S, Bernard V, Vigneault E, Goutagny R, Ahnert-Hilger G, Giros B, Daumas S, Williams S, El Mestikawy S. Regulation of the Hippocampal Network by VGLUT3-Positive CCK- GABAergic Basket Cells. Front Cell Neurosci 2017; 11:140. [PMID: 28559797 PMCID: PMC5432579 DOI: 10.3389/fncel.2017.00140] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/26/2017] [Indexed: 01/29/2023] Open
Abstract
Hippocampal interneurons release the inhibitory transmitter GABA to regulate excitation, rhythm generation and synaptic plasticity. A subpopulation of GABAergic basket cells co-expresses the GABA/glycine vesicular transporters (VIAAT) and the atypical type III vesicular glutamate transporter (VGLUT3); therefore, these cells have the ability to signal with both GABA and glutamate. GABAergic transmission by basket cells has been extensively characterized but nothing is known about the functional implications of VGLUT3-dependent glutamate released by these cells. Here, using VGLUT3-null mice we observed that the loss of VGLUT3 results in a metaplastic shift in synaptic plasticity at Shaeffer's collaterals - CA1 synapses and an altered theta oscillation. These changes were paralleled by the loss of a VGLUT3-dependent inhibition of GABAergic current in CA1 pyramidal layer. Therefore presynaptic type III metabotropic could be activated by glutamate released from VGLUT3-positive interneurons. This putative presynaptic heterologous feedback mechanism inhibits local GABAergic tone and regulates the hippocampal neuronal network.
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Affiliation(s)
- Caroline Fasano
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Jill Rocchetti
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Katarzyna Pietrajtis
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | | | - Frédéric Manseau
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Diana Y Sakae
- Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Maya Marcus-Sells
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Lauriane Ramet
- Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Lydie J Morel
- Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Damien Carrel
- Université Paris Descartes, Sorbonne Paris Cité, Centre National de la Recherche Scientifique, UMR 8250Paris, France
| | | | - Susanne Bolte
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Core Facilities - Institut de Biologie Paris SeineParis, France
| | - Véronique Bernard
- Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Erika Vigneault
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Romain Goutagny
- CNRS UMR 7364, Team NCD, Université de StrasbourgStrasbourg, France
| | | | - Bruno Giros
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada.,Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Stéphanie Daumas
- Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
| | - Sylvain Williams
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada
| | - Salah El Mestikawy
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, MontrealQC, Canada.,Sorbonne Universités, UPMC Univ Paris 06, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Medicale, Institut de Biologie Paris Seine, Neuroscience Paris Seine (NPS)Paris, France
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8
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Hamm V, Héraud C, Bott JB, Herbeaux K, Strittmatter C, Mathis C, Goutagny R. Differential contribution of APP metabolites to early cognitive deficits in a TgCRND8 mouse model of Alzheimer's disease. Sci Adv 2017; 3:e1601068. [PMID: 28275722 PMCID: PMC5325539 DOI: 10.1126/sciadv.1601068] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 01/25/2017] [Indexed: 06/06/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative pathology commonly characterized by a progressive and irreversible deterioration of cognitive functions, especially memory. Although the etiology of AD remains unknown, a consensus has emerged on the amyloid hypothesis, which posits that increased production of soluble amyloid β (Aβ) peptide induces neuronal network dysfunctions and cognitive deficits. However, the relative failures of Aβ-centric therapeutics suggest that the amyloid hypothesis is incomplete and/or that the treatments were given too late in the course of AD, when neuronal damages were already too extensive. Hence, it is striking to see that very few studies have extensively characterized, from anatomy to behavior, the alterations associated with pre-amyloid stages in mouse models of AD amyloid pathology. To fulfill this gap, we examined memory capacities as well as hippocampal network anatomy and dynamics in young adult pre-plaque TgCRND8 mice when hippocampal Aβ levels are still low. We showed that TgCRND8 mice present alterations in hippocampal inhibitory networks and γ oscillations at this stage. Further, these mice exhibited deficits only in a subset of hippocampal-dependent memory tasks, which are all affected at later stages. Last, using a pharmacological approach, we showed that some of these early memory deficits were Aβ-independent. Our results could partly explain the limited efficacy of Aβ-directed treatments and favor multitherapy approaches for early symptomatic treatment for AD.
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Affiliation(s)
- Valentine Hamm
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Céline Héraud
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Jean-Bastien Bott
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Karine Herbeaux
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Carole Strittmatter
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Chantal Mathis
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
| | - Romain Goutagny
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Université de Strasbourg, Faculté de Psychologie, 12 rue Goethe, F-67000 Strasbourg, France
- LNCA, UMR 7364, CNRS, Neuropôle de Strasbourg, 12 rue Goethe, F-67000 Strasbourg, France
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9
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Hamm V, Héraud C, Cassel JC, Mathis C, Goutagny R. Precocious Alterations of Brain Oscillatory Activity in Alzheimer's Disease: A Window of Opportunity for Early Diagnosis and Treatment. Front Cell Neurosci 2015; 9:491. [PMID: 26733816 PMCID: PMC4685112 DOI: 10.3389/fncel.2015.00491] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/04/2015] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's disease (AD) is the most common form of neurodegenerative dementia accounting for 50-80% of all age-related dementia. This pathology is characterized by the progressive and irreversible alteration of cognitive functions, such as memory, leading inexorably to the loss of autonomy for patients with AD. The pathology is linked with aging and occurs most commonly around 65 years old. Its prevalence (5% over 65 years of age and 20% after 80 years) constitutes an economic and social burden for AD patients and their family. At the present, there is still no cure for AD, actual treatments being moderately effective only in early stages of the pathology. A lot of efforts have been deployed with the aim of defining new AD biomarkers. Successful early detection of mild cognitive impairment (MCI) linked to AD requires the identification of biomarkers capable of distinguishing individuals with early stages of AD from other pathologies impacting cognition such as depression. In this article, we will review recent evidence suggesting that electroencephalographic (EEG) recordings, coupled with behavioral assessments, could be a useful approach and easily implementable for a precocious detection of AD.
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Affiliation(s)
- Valentine Hamm
- Centre National de la Recherche Scientifique UMR 7364, Laboratoire de Neurosciences Cognitives et AdaptativesStrasbourg, France; Université de Strasbourg, Neuropôle de StrasbourgStrasbourg, France
| | - Céline Héraud
- Centre National de la Recherche Scientifique UMR 7364, Laboratoire de Neurosciences Cognitives et AdaptativesStrasbourg, France; Université de Strasbourg, Neuropôle de StrasbourgStrasbourg, France
| | - Jean-Christophe Cassel
- Centre National de la Recherche Scientifique UMR 7364, Laboratoire de Neurosciences Cognitives et AdaptativesStrasbourg, France; Université de Strasbourg, Neuropôle de StrasbourgStrasbourg, France
| | - Chantal Mathis
- Centre National de la Recherche Scientifique UMR 7364, Laboratoire de Neurosciences Cognitives et AdaptativesStrasbourg, France; Université de Strasbourg, Neuropôle de StrasbourgStrasbourg, France
| | - Romain Goutagny
- Centre National de la Recherche Scientifique UMR 7364, Laboratoire de Neurosciences Cognitives et AdaptativesStrasbourg, France; Université de Strasbourg, Neuropôle de StrasbourgStrasbourg, France
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Bott JB, Muller MA, Jackson J, Aubert J, Cassel JC, Mathis C, Goutagny R. Spatial Reference Memory is Associated with Modulation of Theta-Gamma Coupling in the Dentate Gyrus. Cereb Cortex 2015; 26:3744-3753. [PMID: 26250776 DOI: 10.1093/cercor/bhv177] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Spatial reference memory in rodents represents a unique opportunity to study brain mechanisms responsible for encoding, storage and retrieval of a memory. Even though its reliance on hippocampal networks has long been established, the precise computations performed by different hippocampal subfields during spatial learning are still not clear. To study the evolution of electrophysiological activity in the CA1-dentate gyrus axis of the dorsal hippocampus over an iterative spatial learning paradigm, we recorded local field potentials in behaving mice using a newly designed appetitive version of the Barnes maze. We first showed that theta and gamma oscillations as well as theta-gamma coupling are differentially modulated in particular hippocampal subfields during the task. In addition, we show that dentate gyrus networks, but not CA1 networks, exhibit a transient learning-dependent increase in theta-gamma coupling specifically at the vicinity of the target area in the maze. In contrast to previous immediate early-gene studies, our results point to a long-lasting involvement of dentate networks in navigational memory in the Barnes maze. Based on these findings, we propose that theta-gamma coupling might represent a mechanism by which hippocampal areas compute relevant information.
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Affiliation(s)
- Jean-Bastien Bott
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France.,Present address: Douglas Mental Health University Institute, McGill University, Montréal, Quebec, Canada
| | - Marc-Antoine Muller
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France
| | - Jesse Jackson
- Department of Biological Sciences, Columbia University, Columbia, NY 10027, USA
| | - Julien Aubert
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France
| | - Jean-Christophe Cassel
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France
| | - Chantal Mathis
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France
| | - Romain Goutagny
- CNRS UMR 7364, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Strasbourg, France.,Université de Strasbourg, UMR 7364, Strasbourg, France
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11
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Lithfous S, Tromp D, Dufour A, Pebayle T, Goutagny R, Després O. Decreased theta power at encoding and cognitive mapping deficits in elderly individuals during a spatial memory task. Neurobiol Aging 2015; 36:2821-9. [PMID: 26248864 DOI: 10.1016/j.neurobiolaging.2015.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/29/2015] [Accepted: 07/03/2015] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to investigate the role of theta activity in cognitive mapping, and to determine whether age-associated decreased theta power may account for navigational difficulties in elderly individuals. Cerebral activity was recorded using electroencephalograph in young and older individuals performing a spatial memory task that required the creation of cognitive maps. Power spectra were computed in the frontal and parietal regions and correlated with recognition performance. We found that accuracy of cognitive mapping was positively correlated with left frontal theta activity during encoding in young adults but not in older individuals. Compared with young adults, older participants were impaired in the creation of cognitive maps and showed reduced theta and alpha activity at encoding. These results suggest that encoding processes are impaired in older individual, which may explain age-related cognitive mapping deficits.
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Affiliation(s)
- Ségolène Lithfous
- Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364-UNISTRA/CNRS, Strasbourg, France.
| | - Delphine Tromp
- Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364-UNISTRA/CNRS, Strasbourg, France
| | - André Dufour
- Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364-UNISTRA/CNRS, Strasbourg, France; Centre d'Investigations Neurocognitives et Neurophysiologiques (CI2N), UMS 3489-UNISTRA/CNRS, Strasbourg, France
| | - Thierry Pebayle
- Centre d'Investigations Neurocognitives et Neurophysiologiques (CI2N), UMS 3489-UNISTRA/CNRS, Strasbourg, France
| | - Romain Goutagny
- Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364-UNISTRA/CNRS, Strasbourg, France
| | - Olivier Després
- Faculty of Psychology, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364-UNISTRA/CNRS, Strasbourg, France
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12
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Goutagny R, Gu N, Cavanagh C, Jackson J, Chabot JG, Quirion R, Krantic S, Williams S. Alterations in hippocampal network oscillations and theta-gamma coupling arise before Aβ overproduction in a mouse model of Alzheimer's disease. Eur J Neurosci 2013. [DOI: 10.1111/ejn.12446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Goutagny R, Gu N, Cavanagh C, Jackson J, Chabot JG, Quirion R, Krantic S, Williams S. Alterations in hippocampal network oscillations and theta-gamma coupling arise before Aβ overproduction in a mouse model of Alzheimer's disease. Eur J Neurosci 2013; 37:1896-902. [DOI: 10.1111/ejn.12233] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 03/26/2013] [Accepted: 03/28/2013] [Indexed: 12/31/2022]
Affiliation(s)
| | - Ning Gu
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Chelsea Cavanagh
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Jesse Jackson
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Jean-Guy Chabot
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Rémi Quirion
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Slavica Krantic
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
| | - Sylvain Williams
- Douglas Mental Health University Institute; McGill University; 6875 Lasalle blvd; Verdun; Montreal; H4H1R3; QC; Canada
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Goutagny R, Krantic S. Hippocampal oscillatory activity in Alzheimer's disease: toward the identification of early biomarkers? Aging Dis 2013; 4:134-140. [PMID: 23730529 PMCID: PMC3660123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/17/2013] [Accepted: 01/17/2013] [Indexed: 06/02/2023] Open
Abstract
Alzheimer's disease (AD) develops for a yet unknown period of time and can progress undiagnosed for years before its first clinical manifestation consisting of characteristic cognitive impairments. Current AD treatments offer only a small symptomatic benefit, likely because AD is diagnosed when the pathology is already well advanced, whereas treatments may be most efficient in the early phases of pathology. An accurate, early marker of AD is therefore needed to help diagnose AD earlier. It is now well documented that AD patients and animal models of AD exhibit reorganization of hippocampal and cortical networks. This reorganization is initiated by an early imbalance between excitation and inhibition, leading to altered network activity. The mechanisms underlying these changes are unknown but recent evidence suggests that either soluble amyloid-beta (Aß) or fibrillar forms of Aß are central to various network alterations observed in AD. However, recent evidence also suggests that Aβ over-production in animal models is not systematically linked to network over-excitation. We hypothesize here that early changes in the excitation-inhibition balance within the hippocampus occurs much earlier than currently believed and initially produces only slight changes in overall hippocampal activity. In this review, we introduce the concept according to which the subtle changes in theta and gamma rhythms might occur during the very first stages of AD and thus could be used as a possible predictor for the disease.
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Affiliation(s)
- Romain Goutagny
- Laboratoire de Neurosciences Comportementales et Adaptatives (LNCA),Centre National de la Recherche Scientifique (CNRS), F-67000 Strasbourg, France
- Université de Strasbourg, Faculté de Psychologie, F-67000 Strasbourg, France
| | - Slavica Krantic
- INSERM U872, Centre de Recherche des Cordelier, Paris, France
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15
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Jego S, Salvert D, Renouard L, Mori M, Goutagny R, Luppi PH, Fort P. Tuberal hypothalamic neurons secreting the satiety molecule Nesfatin-1 are critically involved in paradoxical (REM) sleep homeostasis. PLoS One 2012; 7:e52525. [PMID: 23300698 PMCID: PMC3531409 DOI: 10.1371/journal.pone.0052525] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 11/15/2012] [Indexed: 01/17/2023] Open
Abstract
The recently discovered Nesfatin-1 plays a role in appetite regulation as a satiety factor through hypothalamic leptin-independent mechanisms. Nesfatin-1 is co-expressed with Melanin-Concentrating Hormone (MCH) in neurons from the tuberal hypothalamic area (THA) which are recruited during sleep states, especially paradoxical sleep (PS). To help decipher the contribution of this contingent of THA neurons to sleep regulatory mechanisms, we thus investigated in rats whether the co-factor Nesfatin-1 is also endowed with sleep-modulating properties. Here, we found that the disruption of the brain Nesfatin-1 signaling achieved by icv administration of Nesfatin-1 antiserum or antisense against the nucleobindin2 (NUCB2) prohormone suppressed PS with little, if any alteration of slow wave sleep (SWS). Further, the infusion of Nesfatin-1 antiserum after a selective PS deprivation, designed for elevating PS needs, severely prevented the ensuing expected PS recovery. Strengthening these pharmacological data, we finally demonstrated by using c-Fos as an index of neuronal activation that the recruitment of Nesfatin-1-immunoreactive neurons within THA is positively correlated to PS but not to SWS amounts experienced by rats prior to sacrifice. In conclusion, this work supports a functional contribution of the Nesfatin-1 signaling, operated by THA neurons, to PS regulatory mechanisms. We propose that these neurons, likely releasing MCH as a synergistic factor, constitute an appropriate lever by which the hypothalamus may integrate endogenous signals to adapt the ultradian rhythm and maintenance of PS in a manner dictated by homeostatic needs. This could be done through the inhibition of downstream targets comprised primarily of the local hypothalamic wake-active orexin- and histamine-containing neurons.
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Affiliation(s)
- Sonia Jego
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
| | - Denise Salvert
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
| | - Leslie Renouard
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
| | - Masatomo Mori
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Romain Goutagny
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
| | - Pierre-Hervé Luppi
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
| | - Patrice Fort
- Sleep-Waking Neuronal Networks, CNRS - UMR5292; INSERM - U1028, Lyon Neuroscience Research Center (CRNL), Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
- University of Lyon, Lyon, France
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Lowe GC, Goutagny R, Ducharme G, Jackson J, Williams S. Early network alterations in the subiculum of offspring following gestational maternal immune activation. Schizophr Res 2012; 134:300-1. [PMID: 22197688 DOI: 10.1016/j.schres.2011.11.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 11/22/2011] [Accepted: 11/28/2011] [Indexed: 11/17/2022]
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17
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Ducharme G, Lowe GC, Goutagny R, Williams S. Early alterations in hippocampal circuitry and theta rhythm generation in a mouse model of prenatal infection: implications for schizophrenia. PLoS One 2012; 7:e29754. [PMID: 22238649 PMCID: PMC3253085 DOI: 10.1371/journal.pone.0029754] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 12/05/2011] [Indexed: 11/20/2022] Open
Abstract
Post-mortem studies suggest that GABAergic neurotransmission is impaired in schizophrenia. However, it remains unclear if these changes occur early during development and how they impact overall network activity. To investigate this, we used a mouse model of prenatal infection with the viral mimic, polyriboinosinic–polyribocytidilic acid (poly I∶C), a model based on epidemiological evidence that an immune challenge during pregnancy increases the prevalence of schizophrenia in the offspring. We found that prenatal infection reduced the density of parvalbumin- but not somatostatin-positive interneurons in the CA1 area of the hippocampus and strongly reduced the strength of inhibition early during postnatal development. Furthermore, using an intact hippocampal preparation in vitro, we found reduced theta oscillation generated in the CA1 area. Taken together, these results suggest that redistribution in excitatory and inhibitory transmission locally in the CA1 is associated with a significant alteration in network function. Furthermore, given the role of theta rhythm in memory, our results demonstrate how a risk factor for schizophrenia can affect network function early in development that could contribute to cognitive deficits observed later in the disease.
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Affiliation(s)
- Guillaume Ducharme
- Douglas Mental Health University Institute, McGill University, Department of Psychiatry, Montréal, Québec, Canada
| | - Germaine C. Lowe
- Douglas Mental Health University Institute, McGill University, Department of Psychiatry, Montréal, Québec, Canada
| | - Romain Goutagny
- Douglas Mental Health University Institute, McGill University, Department of Psychiatry, Montréal, Québec, Canada
| | - Sylvain Williams
- Douglas Mental Health University Institute, McGill University, Department of Psychiatry, Montréal, Québec, Canada
- * E-mail:
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18
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Goutagny R, Jackson J, Williams S. Self-generated theta oscillations in the hippocampus. Nat Neurosci 2009; 12:1491-3. [PMID: 19881503 DOI: 10.1038/nn.2440] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Accepted: 10/29/2009] [Indexed: 11/09/2022]
Abstract
Hippocampal theta rhythm is crucial for spatial memory and is thought to be generated by extrinsic inputs. In contrast, using a complete rat hippocampus in vitro, we found several intrinsic, atropine-resistant theta generators in CA1. These oscillators were organized along the septotemporal axis and arose independently from CA3. Our results suggest that CA1 theta rhythm can emerge from the coupling of multiple autonomous hippocampal theta oscillators.
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Affiliation(s)
- Romain Goutagny
- Douglas Mental Health University Institute, McGill University, Department of Psychiatry, Québec, Canada
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Sapin E, Lapray D, Bérod A, Goutagny R, Léger L, Ravassard P, Clément O, Hanriot L, Fort P, Luppi PH. Localization of the brainstem GABAergic neurons controlling paradoxical (REM) sleep. PLoS One 2009; 4:e4272. [PMID: 19169414 PMCID: PMC2629845 DOI: 10.1371/journal.pone.0004272] [Citation(s) in RCA: 157] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Accepted: 12/08/2008] [Indexed: 01/03/2023] Open
Abstract
Paradoxical sleep (PS) is a state characterized by cortical activation, rapid eye movements and muscle atonia. Fifty years after its discovery, the neuronal network responsible for the genesis of PS has been only partially identified. We recently proposed that GABAergic neurons would have a pivotal role in that network. To localize these GABAergic neurons, we combined immunohistochemical detection of Fos with non-radioactive in situ hybridization of GAD67 mRNA (GABA synthesis enzyme) in control rats, rats deprived of PS for 72 h and rats allowed to recover after such deprivation. Here we show that GABAergic neurons gating PS (PS-off neurons) are principally located in the ventrolateral periaqueductal gray (vlPAG) and the dorsal part of the deep mesencephalic reticular nucleus immediately ventral to it (dDpMe). Furthermore, iontophoretic application of muscimol for 20 min in this area in head-restrained rats induced a strong and significant increase in PS quantities compared to saline. In addition, we found a large number of GABAergic PS-on neurons in the vlPAG/dDPMe region and the medullary reticular nuclei known to generate muscle atonia during PS. Finally, we showed that PS-on neurons triggering PS localized in the SLD are not GABAergic. Altogether, our results indicate that multiple populations of PS-on GABAergic neurons are distributed in the brainstem while only one population of PS-off GABAergic neurons localized in the vlPAG/dDpMe region exist. From these results, we propose a revised model for PS control in which GABAergic PS-on and PS-off neurons localized in the vlPAG/dDPMe region play leading roles.
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Affiliation(s)
- Emilie Sapin
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Damien Lapray
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Anne Bérod
- CNRS, FRE3006, Pharmacologie et Imagerie de la neurotransmission sérotoninergique, Université Lyon1, Lyon, France
| | - Romain Goutagny
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Lucienne Léger
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Pascal Ravassard
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Olivier Clément
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Lucie Hanriot
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Patrice Fort
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
| | - Pierre-Hervé Luppi
- CNRS, UMR5167, Physiopathologie des réseaux neuronaux du cycle veille-sommeil, Lyon, France
- * E-mail:
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Léger L, Goutagny R, Sapin E, Salvert D, Fort P, Luppi PH. Noradrenergic neurons expressing Fos during waking and paradoxical sleep deprivation in the rat. J Chem Neuroanat 2008; 37:149-57. [PMID: 19152834 DOI: 10.1016/j.jchemneu.2008.12.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 10/30/2008] [Accepted: 12/16/2008] [Indexed: 11/28/2022]
Abstract
Noradrenaline is known to induce waking (W) and to inhibit paradoxical sleep (PS or REM). Both roles have been exclusively attributed to the noradrenergic neurons of the locus coeruleus (LC, A6), shown to be active during W and inactive during PS. However, the A1, A2, A5 and A7 noradrenergic neurons could also be responsible. Therefore, to determine the contribution of each of the noradrenergic groups in W and in PS inhibition, rats were maintained in continuous W for 3h in a novel environment or specifically deprived of PS for 3 days, with some of them allowed to recover from this deprivation. A double immunohistochemical labeling with Fos and tyrosine hydroxylase was then performed. Thirty percent of the LC noradrenergic cells were found to be Fos-positive after exposure to the novel environment and less than 2% after PS deprivation. In contrast, a significant number of double-labeled neurons (up to 40% of the noradrenergic neurons) were observed in the A1/C1, A2 and A5 groups, after both novel environment and PS deprivation. After PS recovery and in control condition, less than 1% of the noradrenergic neurons were Fos-immunoreactive, regardless of the noradrenergic group. These results indicate that the brainstem noradrenergic cell groups are activated during W and silent during PS. They further suggest that the inhibitory effect of noradrenaline on PS may be due to the A1/C1, A2 and to a lesser degree to A5 neurons but not from those of the LC as previously hypothesized.
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Goutagny R, Manseau F, Jackson J, Danik M, Williams S. In vitro activation of the medial septum-diagonal band complex generates atropine-sensitive and atropine-resistant hippocampal theta rhythm: an investigation using a complete septohippocampal preparation. Hippocampus 2008; 18:531-5. [PMID: 18306282 DOI: 10.1002/hipo.20418] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The medial septum and diagonal band complex (MS-DB) is believed to play a key role in generating theta oscillations in the hippocampus, a phenomenon critical for learning and memory. Although the importance of the MS-DB in hippocampal theta rhythm generation is generally accepted, it remains to be determined whether the MS-DB alone can generate hippocampal oscillations or is only a transducer of rhythmic activity from other brain areas. Secondly, it is known that hippocampal theta rhythm can be separated into an atropine-sensitive and insensitive component. However, it remains to be established if the MS-DB can generate both types of rhythm. To answer these questions, we used a new in vitro rat septohippocampal preparation placed in a hermetically separated two side recording chamber. We showed that carbachol activation of the MS-DB generated large theta oscillations in the CA1 and CA3 regions of the hippocampus. These oscillations were blocked by applying either the GABA(A) receptor antagonist bicuculline or the AMPA/kainate antagonist DNQX to the hippocampus. Interestingly, the application of the muscarinic receptor antagonist atropine produced only a partial decrease in the amplitude, without modification of the frequency, of theta. These results show for the first time, that upon optimal excitation, the MS-DB alone is able to generate hippocampal oscillations in the theta frequency band. Moreover, these MS-DB generated theta oscillations are mediated by muscarinic and nonmuscarinic receptors and have a pharmacological profile similar to theta rhythm observed in awake animals.
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Affiliation(s)
- Romain Goutagny
- Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada.
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22
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Adamantidis A, Salvert D, Goutagny R, Lakaye B, Gervasoni D, Grisar T, Luppi PH, Fort P. Sleep architecture of the melanin-concentrating hormone receptor 1-knockout mice. Eur J Neurosci 2008; 27:1793-800. [PMID: 18380672 DOI: 10.1111/j.1460-9568.2008.06129.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Growing amounts of data indicate involvement of the posterior hypothalamus in the regulation of sleep, especially paradoxical sleep (PS). Accordingly, we previously showed that the melanin-concentrating hormone (MCH)-producing neurons of the rat hypothalamus are selectively activated during a PS rebound. In addition, intracerebroventricular infusion of MCH increases total sleep duration, suggesting a new role for MCH in sleep regulation. To determine whether activation of the MCH system promotes sleep, we studied spontaneous sleep and its homeostatic regulation in mice with deletion of the MCH-receptor 1 gene (MCH-R1-/- vs. MCH-R1+/+) and their behavioural response to modafinil, a powerful antinarcoleptic drug. Here, we show that the lack of functional MCH-R1 results in a hypersomniac-like phenotype, both in basal conditions and after total sleep deprivation, compared to wild-type mice. Further, we found that modafinil was less potent at inducing wakefulness in MCH-R1-/- than in MCH-R1+/+ mice. We report for the first time that animals with genetically inactivated MCH signaling exhibit altered vigilance state architecture and sleep homeostasis. This study also suggests that the MCH system may modulate central pathways involved in the wake-promoting effect of modafinil.
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Affiliation(s)
- Antoine Adamantidis
- Research Center for Cellular and Molecular Neurobiology, Unit of Molecular Neurophysiology, University of Liège, 1 Avenue de l'Hôpital, Bat. B-36, 4000 Liège, Belgium.
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Luppi PH, Gervasoni D, Verret L, Goutagny R, Peyron C, Salvert D, Leger L, Fort P. Paradoxical (REM) sleep genesis: the switch from an aminergic-cholinergic to a GABAergic-glutamatergic hypothesis. ACTA ACUST UNITED AC 2007; 100:271-83. [PMID: 17689057 DOI: 10.1016/j.jphysparis.2007.05.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the middle of the last century, Michel Jouvet discovered paradoxical sleep (PS), a sleep phase paradoxically characterized by cortical activation and rapid eye movements and a muscle atonia. Soon after, he showed that it was still present in "pontine cats" in which all structures rostral to the brainstem have been removed. Later on, it was demonstrated that the pontine peri-locus coeruleus alpha (peri-LCalpha in cats, corresponding to the sublaterodorsal nucleus, SLD, in rats) is responsible for PS onset. It was then proposed that the onset and maintenance of PS is due to a reciprocal inhibitory interaction between neurons presumably cholinergic specifically active during PS localized in this region and monoaminergic neurons. In the last decade, we have tested this hypothesis with our model of head-restrained rats and functional neuroanatomical studies. Our results confirmed that the SLD in rats contains the neurons responsible for the onset and maintenance of PS. They further indicate that (1) these neurons are non-cholinergic possibly glutamatergic neurons, (2) they directly project to the glycinergic premotoneurons localized in the medullary ventral gigantocellular reticular nucleus (GiV), (3) the main neurotransmitter responsible for their inhibition during waking (W) and slow wave sleep (SWS) is GABA rather than monoamines, (4) they are constantly and tonically excited by glutamate and (5) the GABAergic neurons responsible for their tonic inhibition during W and SWS are localized in the deep mesencephalic reticular nucleus (DPMe). We also showed that the tonic inhibition of locus coeruleus (LC) noradrenergic and dorsal raphe (DRN) serotonergic neurons during sleep is due to a tonic GABAergic inhibition by neurons localized in the dorsal paragigantocellular reticular nucleus (DPGi) and the ventrolateral periaqueductal gray (vlPAG). We propose that these GABAergic neurons also inhibit the GABAergic neurons of the DPMe at the onset and during PS and are therefore responsible for the onset and maintenance of PS.
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Affiliation(s)
- Pierre-Hervé Luppi
- UMR5167 CNRS, Faculté de Médecine Laennec, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7, Rue Guillaume Paradin, 69372 Lyon cedex 08, France.
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Abstract
Acetylcholine is crucial for the regulation of paradoxical sleep (PS) and EEG theta activity. To determine the contribution of individual muscarinic receptors to these events, we analyzed the sleep-waking cycle and EEG activities of mice lacking functional M(3) or M(2)/M(4 )receptors. Daily PS amounts were significantly decreased in M3-/- (-22%) but not in M2/M4-/- mice. Further, the theta peak frequency for PS was significantly increased in both M2/M4-/- and M3-/- mice. This study supports the potential role of M(3) rather than M(2) and M(4) muscarinic receptors in the modulation of PS in mice and strengthens the idea that multiple muscarinic receptors contribute to the regulation of the EEG theta activity during PS.
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Affiliation(s)
- Romain Goutagny
- CNRS UMR 5167, Physiopathologie des Réseaux Neuronaux du Cycle Veille-Sommeil, Institut Fédératif des Neurosciences de Lyon (IFR19), Université C. Bernard, 7 rue Guillaume Paradin, FR-69372 Lyon Cedex 08, France
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Goutagny R, Luppi PH, Salvert D, Gervasoni D, Fort P. GABAergic control of hypothalamic melanin-concentrating hormone-containing neurons across the sleep???waking cycle. Neuroreport 2005; 16:1069-73. [PMID: 15973150 DOI: 10.1097/00001756-200507130-00008] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The perifornical-lateral hypothalamic area is implicated in regulating waking and paradoxical sleep. The blockade of GABAA receptors by iontophoretic applications of bicuculline (or gabazine) into the perifornical-lateral hypothalamic area induced a continuous quiet waking state associated to a robust muscle tone in head-restrained rats. During the effects, sleep was totally suppressed. In rats killed at the end of a 90 min ejection of bicuculline, Fos expression was induced in approximately 28% of the neurons immunoreactive for hypocretin and in approximately 3% of the neurons immunostained for melanin-concentrating hormone within the ejection site. These results suggest that neurons containing melanin-concentrating hormone are not active during waking and that the lack of a potent GABAergic influence during waking is consistent with their role in sleep regulation.
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Affiliation(s)
- Romain Goutagny
- CNRS, UMR 5167, Faculté de Medecine, RTH Laennec, 7 rue G. Paradin, 69372 Lyon cedex 08, France
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Goutagny R, Verret L, Fort P, Salvert D, Léger L, Luppi PH, Peyron C. Posterior hypothalamus and regulation of vigilance states. Arch Ital Biol 2004; 142:487-500. [PMID: 15493550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Affiliation(s)
- R Goutagny
- CNRS UMR 5167, Institut fédératif des neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon 1, Lyon, Cedex 08 France
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Luppi PH, Gervasoni D, Boissard R, Verret L, Goutagny R, Peyron C, Salvert D, Leger L, Barbagli B, Fort P. Brainstem structures responsible for paradoxical sleep onset and maintenance. Arch Ital Biol 2004; 142:397-411. [PMID: 15493544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
This paper is dedicated to our mentor, Michel Jouvet who inspired our career and transmitted to us his passion for the study of the mechanisms responsible for paradoxical sleep genesis and also that of its still mysterious functions. We expose in the following the progresses in the knowledge in this field brought during 40 years by Michel Jouvet and his team and more recently by the members of a new CNRS laboratory in which we aim to pursue in the path opened by Michel Jouvet.
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Affiliation(s)
- P H Luppi
- UMR5167 CNRS, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard, Lyon, Cedex 08, France.
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Verret L, Goutagny R, Fort P, Cagnon L, Salvert D, Léger L, Boissard R, Salin P, Peyron C, Luppi PH. A role of melanin-concentrating hormone producing neurons in the central regulation of paradoxical sleep. BMC Neurosci 2003; 4:19. [PMID: 12964948 PMCID: PMC201018 DOI: 10.1186/1471-2202-4-19] [Citation(s) in RCA: 337] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2003] [Accepted: 09/09/2003] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Peptidergic neurons containing the melanin-concentrating hormone (MCH) and the hypocretins (or orexins) are intermingled in the zona incerta, perifornical nucleus and lateral hypothalamic area. Both types of neurons have been implicated in the integrated regulation of energy homeostasis and body weight. Hypocretin neurons have also been involved in sleep-wake regulation and narcolepsy. We therefore sought to determine whether hypocretin and MCH neurons express Fos in association with enhanced paradoxical sleep (PS or REM sleep) during the rebound following PS deprivation. Next, we compared the effect of MCH and NaCl intracerebroventricular (ICV) administrations on sleep stage quantities to further determine whether MCH neurons play an active role in PS regulation. RESULTS Here we show that the MCH but not the hypocretin neurons are strongly active during PS, evidenced through combined hypocretin, MCH, and Fos immunostainings in three groups of rats (PS Control, PS Deprived and PS Recovery rats). Further, we show that ICV administration of MCH induces a dose-dependent increase in PS (up to 200%) and slow wave sleep (up to 70%) quantities. CONCLUSION These results indicate that MCH is a powerful hypnogenic factor. MCH neurons might play a key role in the state of PS via their widespread projections in the central nervous system.
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Affiliation(s)
- Laure Verret
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Romain Goutagny
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Patrice Fort
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Laurène Cagnon
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Denise Salvert
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Lucienne Léger
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Romuald Boissard
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Paul Salin
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Christelle Peyron
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
| | - Pierre-Hervé Luppi
- CNRS UMR5167, Institut Fédératif des Neurosciences de Lyon (IFR 19), Université Claude Bernard Lyon I, 7 Rue Guillaume Paradin, 69372 LYON Cedex 08, FRANCE
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