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Jiang Q, Wu KLK, Hu XQ, Cheung MH, Chen W, Ma CW, Shum DKY, Chan YS. Neonatal GABAergic transmission primes vestibular gating of output for adult spatial navigation. Cell Mol Life Sci 2024; 81:147. [PMID: 38502309 PMCID: PMC10951018 DOI: 10.1007/s00018-024-05170-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 01/26/2024] [Accepted: 02/07/2024] [Indexed: 03/21/2024]
Abstract
GABAergic interneurons are poised with the capacity to shape circuit output via inhibitory gating. How early in the development of medial vestibular nucleus (MVN) are GABAergic neurons recruited for feedforward shaping of outputs to higher centers for spatial navigation? The role of early GABAergic transmission in assembling vestibular circuits for spatial navigation was explored by neonatal perturbation. Immunohistochemistry and confocal imaging were utilized to reveal the expression of parvalbumin (PV)-expressing MVN neurons and their perineuronal nets. Whole-cell patch-clamp recording, coupled with optogenetics, was conducted in vitro to examine the synaptic function of MVN circuitry. Chemogenetic targeting strategy was also employed in vivo to manipulate neuronal activity during navigational tests. We found in rats a neonatal critical period before postnatal day (P) 8 in which competitive antagonization of GABAergic transmission in the MVN retarded maturation of inhibitory neurotransmission, as evidenced by deranged developmental trajectory for excitation/inhibition ratio and an extended period of critical period-like plasticity in GABAergic transmission. Despite increased number of PV-expressing GABAergic interneurons in the MVN, optogenetic-coupled patch-clamp recording indicated null-recruitment of these neurons in tuning outputs along the ascending vestibular pathway. Such perturbation not only offset output dynamics of ascending MVN output neurons, but was further accompanied by impaired vestibular-dependent navigation in adulthood. The same perturbations were however non-consequential when applied after P8. Results highlight neonatal GABAergic transmission as key to establishing feedforward output dynamics to higher brain centers for spatial cognition and navigation.
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Affiliation(s)
- Qiufen Jiang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
- F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kenneth Lap-Kei Wu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
- MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Xiao-Qian Hu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
- Department of Rehabilitation Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Man-Him Cheung
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
| | - Wenqiang Chen
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
- Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Chun-Wai Ma
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China
| | - Daisy Kwok-Yan Shum
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China.
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, People's Republic of China.
| | - Ying-Shing Chan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, Hong Kong SAR, People's Republic of China.
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, People's Republic of China.
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Wéber I, Dakos A, Mészár Z, Matesz C, Birinyi A. Developmental patterns of extracellular matrix molecules in the embryonic and postnatal mouse hindbrain. Front Neuroanat 2024; 18:1369103. [PMID: 38496826 PMCID: PMC10940344 DOI: 10.3389/fnana.2024.1369103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/16/2024] [Indexed: 03/19/2024] Open
Abstract
Normal brain development requires continuous communication between developing neurons and their environment filled by a complex network referred to as extracellular matrix (ECM). The ECM is divided into distinct families of molecules including hyaluronic acid, proteoglycans, glycoproteins such as tenascins, and link proteins. In this study, we characterize the temporal and spatial distribution of the extracellular matrix molecules in the embryonic and postnatal mouse hindbrain by using antibodies and lectin histochemistry. In the embryo, hyaluronan and neurocan were found in high amounts until the time of birth whereas versican and tenascin-R were detected in lower intensities during the whole embryonic period. After birth, both hyaluronic acid and neurocan still produced intense staining in almost all areas of the hindbrain, while tenascin-R labeling showed a continuous increase during postnatal development. The reaction with WFA and aggrecan was revealed first 4th postnatal day (P4) with low staining intensities, while HAPLN was detected two weeks after birth (P14). The perineuronal net appeared first around the facial and vestibular neurons at P4 with hyaluronic acid cytochemistry. One week after birth aggrecan, neurocan, tenascin-R, and WFA were also accumulated around the neurons located in several hindbrain nuclei, but HAPLN1 was detected on the second postnatal week. Our results provide further evidence that many extracellular macromolecules that will be incorporated into the perineuronal net are already expressed at embryonic and early postnatal stages of development to control differentiation, migration, and synaptogenesis of neurons. In late postnatal period, the experience-driven neuronal activity induces formation of perineuronal net to stabilize synaptic connections.
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Affiliation(s)
- Ildikó Wéber
- Laboratory of Brainstem Neuronal Networks and Neuronal Regeneration, Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Adél Dakos
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Zoltán Mészár
- Laboratory of Brainstem Neuronal Networks and Neuronal Regeneration, Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Clara Matesz
- Laboratory of Brainstem Neuronal Networks and Neuronal Regeneration, Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Division of Oral Anatomy, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - András Birinyi
- Laboratory of Brainstem Neuronal Networks and Neuronal Regeneration, Department of Anatomy, Histology, and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Zhang FX, Xie XH, Guo ZX, Wang HD, Li H, Wu KLK, Chan YS, Li YQ. Evaluating proxies for motion sickness in rodent. IBRO Neurosci Rep 2023; 15:107-115. [PMID: 38204574 PMCID: PMC10776324 DOI: 10.1016/j.ibneur.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 06/29/2023] [Indexed: 01/12/2024] Open
Abstract
Motions sickness (MS) occurs when the brain receives conflicting sensory signals from vestibular, visual and proprioceptive systems about a person's ongoing position and/or motion in relation to space. MS is typified by symptoms such as nausea and emesis and implicates complex physiological aspects of sensations and sensorimotor reflexes. Use of animal models has been integral to unraveling the physiological causality of MS. The commonly used rodents (rat and mouse), albeit lacking vomiting reflex, reliably display phenotypic behaviors of pica (eating of non-nutritive substance) and conditioned taste aversion (CTAver) or avoidance (CTAvoi) which utilize neural substrates with pathways that cause gastrointestinal malaise akin to nausea/emesis. As such, rodent pica and CTAver/CTAvoi have been widely used as proxies for nausea/emesis in studies dealing with neural mechanisms of nausea/emesis and MS, as well as for evaluating therapeutics. This review presents the rationale and experimental evidence that support the use of pica and CTAver/CTAvoi as indices for nausea and emesis. Key experimental steps and cautions required when using rodent MS models are also discussed. Finally, future directions are suggested for studying MS with rodent pica and CTAver/CTAvoi models.
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Affiliation(s)
- Fu-Xing Zhang
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
| | - Xiao-Hang Xie
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
| | - Zi-Xin Guo
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
| | - Hao-Dong Wang
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
| | - Hui Li
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
| | - Kenneth Lap Kei Wu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Ying-Shing Chan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China
| | - Yun-Qing Li
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, School of Basic Medicine, The Fourth Military Medical University, Xi’an, PR China
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Magyar A, Racz E, Matesz C, Wolf E, Kiss P, Gaal B. Lesion-induced changes of brevican expression in the perineuronal net of the superior vestibular nucleus. Neural Regen Res 2022; 17:649-654. [PMID: 34380906 PMCID: PMC8504393 DOI: 10.4103/1673-5374.320988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Damage to the vestibular sense organs evokes static and dynamic deficits in the eye movements, posture and vegetative functions. After a shorter or longer period of time, the vestibular function is partially or completely restored via a series of processes such as modification in the efficacy of synaptic inputs. As the plasticity of adult central nervous system is associated with the alteration of extracellular matrix, including its condensed form, the perineuronal net, we studied the changes of brevican expression in the perineuronal nets of the superior vestibular nucleus after unilateral labyrinth lesion. Our results demonstrated that the unilateral labyrinth lesion and subsequent compensation are accompanied by the changing of brevican staining pattern in the perineuronal nets of superior vestibular nucleus of the rat. The reduction of brevican in the perineuronal nets of superior vestibular nucleus may contribute to the vestibular plasticity by suspending the non-permissive role of brevican in the restoration of perineuronal net assembly. After a transitory decrease, the brevican expression restored to the control level parallel to the partial restoration of impaired vestibular function. The bilateral changing in the brevican expression supports the involvement of commissural vestibular fibers in the vestibular compensation. All experimental procedures were approved by the ‘University of Debrecen – Committee of Animal Welfare’ (approval No. 6/2017/DEMAB) and the ‘Scientific Ethics Committee of Animal Experimentation’ (approval No. HB/06/ÉLB/2270-10/2017; approved on June 6, 2017).
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Affiliation(s)
- Agnes Magyar
- Pediatrics Clinic, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Eva Racz
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen; MTA-DE Neuroscience Research Group, Debrecen, Hungary
| | - Clara Matesz
- Department of Anatomy, Histology and Embryology, Faculty of Medicine; Division of Oral Anatomy, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
| | - Ervin Wolf
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Peter Kiss
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Botond Gaal
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Han L, Wu KLK, Kwan PY, Chua OWH, Shum DKY, Chan YS. 5-HT 1A receptor-mediated attenuation of synaptic transmission in rat medial vestibular nucleus impacts on vestibular-related motor function. J Physiol 2020; 599:253-267. [PMID: 33006159 DOI: 10.1113/jp280610] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/29/2020] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS Chemogenetic activation of medial vestibular nucleus-projecting 5-HT neurons resulted in deficits in vestibular-mediated tasks, including negative geotaxis, balance beam and rota-rod tests. The 5-HT1A receptor mediates the vestibular-related behavioural effects of 5-HT in the vestibular nucleus. 5-HT1A receptor activation attenuated evoked excitatory postsynaptic currents and evoked inhibitory postsynaptic currents via a presynaptic mechanism in the vestibular nucleus. ABSTRACT While the anxiolytic effects of serotonergic neuromodulation are well studied, its role in sensorimotor coordination and postural control is unclear. In this study, we show that an increase of serotonin (5-hydroxytryptamine, 5-HT) at the medial vestibular nucleus (MVN), a brainstem centre for vestibulospinal coordination, by either direct cannula administration or chemogenetic stimulation of MVN-projecting serotonergic neurons, adversely affected performance of rats in vestibular-mediated tasks, including negative geotaxis, balance beam and rota-rod tests. Application of the 5-HT1 and 5-HT7 receptor co-agonist 8-hydroxy-2-(di-n-propylamino) tetralin recapitulated the effect of 5-HT, while co-administration of the specific 5-HT1A receptor antagonist WAY 100135 effectively abolished all 5-HT-induced behavioural deficits. This indicated that 5-HT1A receptors mediated the effects of 5-HT in the rat MVN. Using whole-cell patch-clamp recording, we demonstrated that 5-HT1A receptor activation attenuated both evoked excitatory and evoked inhibitory postsynaptic currents through a presynaptic mechanism in the rat MVN. The results thus highlight the 5-HT1A receptor as the gain controller of vestibular-related brainstem circuits for posture and balance.
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Affiliation(s)
- Lei Han
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Kenneth Lap-Kei Wu
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Pui-Yi Kwan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Oscar Wing-Ho Chua
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Daisy Kwok-Yan Shum
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Brain and Cognitive Science, The University of Hong Kong, Hong Kong, PR China
| | - Ying-Shing Chan
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Brain and Cognitive Science, The University of Hong Kong, Hong Kong, PR China
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