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Liang E, Chen Y, Yan Y, Wang S, Yuan J, Yu T. Role of the substantia nigra pars reticulata in sleep-wakefulness: A review of research progress. Sleep Med 2024; 113:284-292. [PMID: 38071927 DOI: 10.1016/j.sleep.2023.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 01/07/2024]
Abstract
Sleep is a complex physiological process that includes two main stages: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. During mammalian sleep, especially REM sleep, skeletal muscles are suppressed to varying degrees, and corresponding movements are inhibited. The synchronous occurrence of sleep and motor inhibition suggests they may share the same neural circuits. Recently, the substantia nigra pars reticulata (SNr) has attracted attention for its potential dual role in regulating sleep-wake cycles and movement. In this review, the SNr's role is surveyed by examining existing research reports regarding its involvement in sleep-wake regulation and motor control. By focusing on the SNr, the goal is to shed light on its dual role intricacies and stimulate further inquiry into potential interactions between sleep and movement regulation, thus aiming to explore sleep-wake regulatory mechanisms and offer novel directions for subsequent scientific investigation.
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Affiliation(s)
- Enpeng Liang
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China; Guizhou Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, 563000, China; Department of Pain Medicine, The First Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Ya Chen
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China; Guizhou Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, 563000, China
| | - Yan Yan
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China; Guizhou Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, 563000, China
| | - Siwei Wang
- Department of Dental Implantology, The Affiliated Stomatological Hospital of Zunyi Medical University, 563000, Zunyi, China
| | - Jie Yuan
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China; Guizhou Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, 563000, China; Department of Pain Medicine, The First Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China; Department of Anesthesiology, The First Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
| | - Tian Yu
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China; Guizhou Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, 563000, China.
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Kirjavainen A, Singh P, Lahti L, Seja P, Lelkes Z, Makkonen A, Kilpinen S, Ono Y, Salminen M, Aitta-Aho T, Stenberg T, Molchanova S, Achim K, Partanen J. Gata2, Nkx2-2 and Skor2 form a transcription factor network regulating development of a midbrain GABAergic neuron subtype with characteristics of REM-sleep regulatory neurons. Development 2022; 149:275960. [DOI: 10.1242/dev.200937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/15/2022] [Indexed: 11/20/2022]
Abstract
ABSTRACT
The midbrain reticular formation (MRF) is a mosaic of diverse GABAergic and glutamatergic neurons that have been associated with a variety of functions, including sleep regulation. However, the molecular characteristics and development of MRF neurons are poorly understood. As the transcription factor, Gata2 is required for the development of all GABAergic neurons derived from the embryonic mouse midbrain, we hypothesized that the genes expressed downstream of Gata2 could contribute to the diversification of GABAergic neuron subtypes in this brain region. Here, we show that Gata2 is required for the expression of several GABAergic lineage-specific transcription factors, including Nkx2-2 and Skor2, which are co-expressed in a restricted group of post-mitotic GABAergic precursors in the MRF. Both Gata2 and Nkx2-2 function is required for Skor2 expression in GABAergic precursors. In the adult mouse and rat midbrain, Nkx2-2-and Skor2-expressing GABAergic neurons locate at the boundary of the ventrolateral periaqueductal gray and the MRF, an area containing REM-off neurons regulating REM sleep. In addition to the characteristic localization, Skor2+ cells increase their activity upon REM-sleep inhibition, send projections to the dorsolateral pons, a region associated with sleep control, and are responsive to orexins, consistent with the known properties of midbrain REM-off neurons.
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Affiliation(s)
- Anna Kirjavainen
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Parul Singh
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Laura Lahti
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Patricia Seja
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Zoltan Lelkes
- FIN00014-University of Helsinki 2 Department of Physiology, PO Box 63 , , Helsinki , Finland
- University of Szeged 3 Department of Physiology, Faculty of Medicine , , Szeged , Hungary
| | - Aki Makkonen
- FIN00014-University of Helsinki 4 Department of Pharmacology, PO Box 63 , , Helsinki , Finland
| | - Sami Kilpinen
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Yuichi Ono
- Department of Developmental Neurobiology, Integrated Cell Biology, KAN Research Institute 5 , 6-8-2 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047 , Japan
| | - Marjo Salminen
- FIN00014-University of Helsinki 6 Department of Veterinary Biosciences, PO Box 66 , , Helsinki , Finland
| | - Teemu Aitta-Aho
- FIN00014-University of Helsinki 4 Department of Pharmacology, PO Box 63 , , Helsinki , Finland
| | - Tarja Stenberg
- FIN00014-University of Helsinki 2 Department of Physiology, PO Box 63 , , Helsinki , Finland
| | - Svetlana Molchanova
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Kaia Achim
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
| | - Juha Partanen
- Molecular and Integrative Biosciences Research Programme 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
- FIN00014-University of Helsinki 1 , Faculty of Biological and Environmental Sciences, PO Box 56 , , Helsinki , Finland
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Zheng D, Fu JY, Tang MY, Yu XD, Zhu Y, Shen CJ, Li CY, Xie SZ, Lin S, Luo M, Li XM. A Deep Mesencephalic Nucleus Circuit Regulates Licking Behavior. Neurosci Bull 2022; 38:565-575. [PMID: 35080731 DOI: 10.1007/s12264-021-00817-2] [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: 06/07/2021] [Accepted: 10/26/2021] [Indexed: 10/19/2022] Open
Abstract
Licking behavior is important for water intake. The deep mesencephalic nucleus (DpMe) has been implicated in instinctive behaviors. However, whether the DpMe is involved in licking behavior and the precise neural circuit behind this behavior remains unknown. Here, we found that the activity of the DpMe decreased during water intake. Inhibition of vesicular glutamate transporter 2-positive (VGLUT2+) neurons in the DpMe resulted in increased water intake. Somatostatin-expressing (SST+), but not protein kinase C-δ-expressing (PKC-δ+), GABAergic neurons in the central amygdala (CeA) preferentially innervated DpMe VGLUT2+ neurons. The SST+ neurons in the CeA projecting to the DpMe were activated at the onset of licking behavior. Activation of these CeA SST+ GABAergic neurons, but not PKC-δ+ GABAergic neurons, projecting to the DpMe was sufficient to induce licking behavior and promote water intake. These findings redefine the roles of the DpMe and reveal a novel CeASST-DpMeVGLUT2 circuit that regulates licking behavior and promotes water intake.
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Affiliation(s)
- Di Zheng
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Jia-Yu Fu
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Meng-Yu Tang
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Xiao-Dan Yu
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Yi Zhu
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Chen-Jie Shen
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Chun-Yue Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Shi-Ze Xie
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Shan Lin
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Minmin Luo
- National Institute of Biological Sciences (NIBS), Beijing, 102206, China.,Chinese Institute for Brain Research, Beijing, 102206, China.,School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Xiao-Ming Li
- Department of Neurobiology and Department of Neurology of Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China. .,NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-machine Integration, School of Brain Science and Brian Medicine, Zhejiang University, Hangzhou, 310058, China. .,Center for Brain Science and Brain-Inspired Intelligence, Research Units for Emotion and Emotion Disorders, Chinese Academy of Medical Sciences, China/Guangdong-Hong Kong-Macao Greater Bay Area, Joint Institute for Genetics and Genome Medicine Between Zhejiang University and University of Toronto, Hangzhou, 310058, China.
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4
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Flaive A, Cabelguen JM, Ryczko D. The serotonin reuptake blocker citalopram destabilizes fictive locomotor activity in salamander axial circuits through 5-HT 1A receptors. J Neurophysiol 2020; 123:2326-2342. [PMID: 32401145 DOI: 10.1152/jn.00179.2020] [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] [Indexed: 01/03/2023] Open
Abstract
Serotoninergic (5-HT) neurons are powerful modulators of spinal locomotor circuits. Most studies on 5-HT modulation focused on the effect of exogenous 5-HT and these studies provided key information about the cellular mechanisms involved. Less is known about the effects of increased release of endogenous 5-HT with selective serotonin reuptake inhibitors. In mammals, such molecules were shown to destabilize the fictive locomotor output of spinal limb networks through 5-HT1A receptors. However, in tetrapods little is known about the effects of increased 5-HT release on the locomotor output of axial networks, which are coordinated with limb circuits during locomotion from basal vertebrates to mammals. Here, we examined the effect of citalopram on fictive locomotion generated in axial segments of isolated spinal cords in salamanders, a tetrapod where raphe 5-HT reticulospinal neurons and intraspinal 5-HT neurons are present as in other vertebrates. Using electrophysiological recordings of ventral roots, we show that fictive locomotion generated by bath-applied glutamatergic agonists is destabilized by citalopram. Citalopram-induced destabilization was prevented by a 5-HT1A receptor antagonist, whereas a 5-HT1A receptor agonist destabilized fictive locomotion. Using immunofluorescence experiments, we found 5-HT-positive fibers and varicosities in proximity with motoneurons and glutamatergic interneurons that are likely involved in rhythmogenesis. Our results show that increasing 5-HT release has a deleterious effect on axial locomotor activity through 5-HT1A receptors. This is consistent with studies in limb networks of turtle and mouse, suggesting that this part of the complex 5-HT modulation of spinal locomotor circuits is common to limb and axial networks in limbed vertebrates.NEW & NOTEWORTHY Little is known about the modulation exerted by endogenous serotonin on axial locomotor circuits in tetrapods. Using axial ventral root recordings in salamanders, we found that a serotonin reuptake blocker destabilized fictive locomotor activity through 5-HT1A receptors. Our anatomical results suggest that serotonin is released on motoneurons and glutamatergic interneurons possibly involved in rhythmogenesis. Our study suggests that common serotoninergic mechanisms modulate axial motor circuits in amphibians and limb motor circuits in reptiles and mammals.
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Affiliation(s)
- Aurélie Flaive
- Département de Pharmacologie-Physiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Jean-Marie Cabelguen
- Neurocentre Magendie, INSERM U 862, Université de Bordeaux, Bordeaux Cedex, France
| | - Dimitri Ryczko
- Département de Pharmacologie-Physiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada.,Centre de recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Quebec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke, Quebec, Canada.,Centre des neurosciences de Sherbrooke, Sherbrooke, Quebec, Canada
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Chen ZK, Yuan XS, Dong H, Wu YF, Chen GH, He M, Qu WM, Huang ZL. Whole-Brain Neural Connectivity to Lateral Pontine Tegmentum GABAergic Neurons in Mice. Front Neurosci 2019; 13:375. [PMID: 31068780 PMCID: PMC6491572 DOI: 10.3389/fnins.2019.00375] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/01/2019] [Indexed: 01/22/2023] Open
Abstract
The GABAergic neurons in the lateral pontine tegmentum (LPT) play key roles in the regulation of sleep and locomotion. The dysfunction of the LPT is related to neurological disorders such as rapid eye movement sleep behavior disorder and ocular flutter. However, the whole-brain neural connectivity to LPT GABAergic neurons remains poorly understood. Using virus-based, cell-type-specific, retrograde and anterograde tracing systems, we mapped the monosynaptic inputs and axonal projections of LPT GABAergic neurons in mice. We found that LPT GABAergic neurons received inputs mainly from the superior colliculus, substantia nigra pars reticulata, dorsal raphe nucleus (DR), lateral hypothalamic area (LHA), parasubthalamic nucleus, and periaqueductal gray (PAG), as well as the limbic system (e.g., central nucleus of the amygdala). Further immunofluorescence assays revealed that the inputs to LPT GABAergic neurons were colocalized with several markers associated with important neural functions, especially the sleep-wake cycle. Moreover, numerous LPT GABAergic neuronal varicosities were observed in the medial and midline part of the thalamus, the LHA, PAG, DR, and parabrachial nuclei. Interestingly, LPT GABAergic neurons formed reciprocal connections with areas related to sleep-wake and motor control, including the LHA, PAG, DR, parabrachial nuclei, and superior colliculus, only the LPT-DR connections were in an equally bidirectional manner. These results provide a structural framework to understand the underlying neural mechanisms of rapid eye movement sleep behavior disorder and disorders of saccades.
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Affiliation(s)
- Ze-Ka Chen
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xiang-Shan Yuan
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Hui Dong
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yong-Fang Wu
- Department of Neurology (Sleep Disorders), Chaohu Hospital of Anhui Medical University, Hefei, China
| | - Gui-Hai Chen
- Department of Neurology (Sleep Disorders), Chaohu Hospital of Anhui Medical University, Hefei, China
| | - Miao He
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Wei-Min Qu
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Zhi-Li Huang
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai, China
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