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Galán-Llario M, Gramage E, García-Guerra A, Torregrosa AB, Gasparyan A, Navarro D, Navarrete F, García-Gutiérrez MS, Manzanares J, Herradón G. Adolescent intermittent ethanol exposure decreases perineuronal nets in the hippocampus in a sex dependent manner: Modulation through pharmacological inhibition of RPTPβ/ζ. Neuropharmacology 2024; 247:109850. [PMID: 38295947 DOI: 10.1016/j.neuropharm.2024.109850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/29/2023] [Accepted: 01/20/2024] [Indexed: 02/05/2024]
Abstract
Adolescence is a critical period for brain maturation in which this organ undergoes critical plasticity mechanisms that increase its vulnerability to the effects of alcohol. Significantly, ethanol-induced disruption of hippocampal neurogenesis has been related to cognitive decline in adulthood. During adolescence, the maturation of perineuronal nets (PNNs), extracellular matrix structures highly affected by ethanol consumption, plays a fundamental role in neurogenesis and plasticity in the hippocampus. Receptor Protein Tyrosine Phosphatase (RPTP) β/ζ is a critical anchor point for PNNs on the cell surface. Using the adolescent intermittent access to ethanol (IAE) model, we previously showed that MY10, a small-molecule inhibitor of RPTPβ/ζ, reduces chronic ethanol consumption in adolescent male mice but not in females and prevents IAE-induced neurogenic loss in the male hippocampus. We have now tested if these effects of MY10 are related to sex-dependent modulatory actions on ethanol-induced effects in PNNs. Our findings suggest a complex interplay between alcohol exposure, neural structures, and sex-related differences in the modulation of PNNs and parvalbumin (PV)-positive cells in the hippocampus. In general, IAE increased the number of PV + cells in the female hippocampus and reduced PNNs intensity in different hippocampal regions, particularly in male mice. Notably, we found that pharmacological inhibition of RPTPβ/ζ with MY10 regulates ethanol-induced alterations of PNNs intensity, which correlates with the protection of hippocampal neurogenesis from ethanol neurotoxic effects and may be related to the capacity of MY10 to increase the gene expression of key components of PNNs.
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Affiliation(s)
- Milagros Galán-Llario
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Spain
| | - Esther Gramage
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Spain; Instituto de Estudios de las Adicciones, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660, Boadilla del Monte, Madrid, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain
| | - Alba García-Guerra
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Spain
| | - Abraham B Torregrosa
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Ani Gasparyan
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Daniela Navarro
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Francisco Navarrete
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - María Salud García-Gutiérrez
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Jorge Manzanares
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, Av Ramón y Cajal s/n, San Juan de Alicante, Alicante, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - Gonzalo Herradón
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660 Boadilla del Monte, Spain; Instituto de Estudios de las Adicciones, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, 28660, Boadilla del Monte, Madrid, Spain; Red de Investigación en Atención Primaria de Adicciones, Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain.
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Schreurs BG, O'Dell DE, Wang D. The Role of Cerebellar Intrinsic Neuronal Excitability, Synaptic Plasticity, and Perineuronal Nets in Eyeblink Conditioning. BIOLOGY 2024; 13:200. [PMID: 38534469 DOI: 10.3390/biology13030200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/29/2024] [Accepted: 03/19/2024] [Indexed: 03/28/2024]
Abstract
Evidence is strong that, in addition to fine motor control, there is an important role for the cerebellum in cognition and emotion. The deep nuclei of the mammalian cerebellum also contain the highest density of perineural nets-mesh-like structures that surround neurons-in the brain, and it appears there may be a connection between these nets and cognitive processes, particularly learning and memory. Here, we review how the cerebellum is involved in eyeblink conditioning-a particularly well-understood form of learning and memory-and focus on the role of perineuronal nets in intrinsic membrane excitability and synaptic plasticity that underlie eyeblink conditioning. We explore the development and role of perineuronal nets and the in vivo and in vitro evidence that manipulations of the perineuronal net in the deep cerebellar nuclei affect eyeblink conditioning. Together, these findings provide evidence of an important role for perineuronal net in learning and memory.
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Affiliation(s)
- Bernard G Schreurs
- Department of Neuroscience, West Virginia University, Morgantown, WV 26505, USA
| | - Deidre E O'Dell
- Department of Biology, Earth and Environmental Sciences, Pennsylvania Western (PennWest) University, California, PA 15419, USA
| | - Desheng Wang
- Department of Neuroscience, West Virginia University, Morgantown, WV 26505, USA
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Carceller H, Gramuntell Y, Klimczak P, Nacher J. Perineuronal Nets: Subtle Structures with Large Implications. Neuroscientist 2023; 29:569-590. [PMID: 35872660 DOI: 10.1177/10738584221106346] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Perineuronal nets (PNNs) are specialized structures of the extracellular matrix that surround the soma and proximal dendrites of certain neurons in the central nervous system, particularly parvalbumin-expressing interneurons. Their appearance overlaps the maturation of neuronal circuits and the closure of critical periods in different regions of the brain, setting their connectivity and abruptly reducing their plasticity. As a consequence, the digestion of PNNs, as well as the removal or manipulation of their components, leads to a boost in this plasticity and can play a key role in the functional recovery from different insults and in the etiopathology of certain neurologic and psychiatric disorders. Here we review the structure, composition, and distribution of PNNs and their variation throughout the evolutive scale. We also discuss methodological approaches to study these structures. The function of PNNs during neurodevelopment and adulthood is discussed, as well as the influence of intrinsic and extrinsic factors on these specialized regions of the extracellular matrix. Finally, we review current data on alterations in PNNs described in diseases of the central nervous system (CNS), focusing on psychiatric disorders. Together, all the data available point to the PNNs as a promising target to understand the physiology and pathologic conditions of the CNS.
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Affiliation(s)
- Héctor Carceller
- Neurobiology Unit, Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
- CIBERSAM, Spanish National Network for Research in Mental Health, Instituto de Salud Carlos III, Madrid, Spain
- Biomedical Imaging Unit FISABIO-CIPF, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunidad Valenciana, Valencia, Spain
| | - Yaiza Gramuntell
- Neurobiology Unit, Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
| | - Patrycja Klimczak
- Neurobiology Unit, Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
- CIBERSAM, Spanish National Network for Research in Mental Health, Instituto de Salud Carlos III, Madrid, Spain
| | - Juan Nacher
- Neurobiology Unit, Institute for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
- CIBERSAM, Spanish National Network for Research in Mental Health, Instituto de Salud Carlos III, Madrid, Spain
- Fundación Investigación Hospital Clínico de Valencia, INCLIVA, Valencia, Spain
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Christen M, Gutierrez-Quintana R, James M, Faller KME, Lowrie M, Rusbridge C, Bossens K, Mellersh C, Pettitt L, Heinonen T, Lohi H, Jagannathan V, Leeb T. A TNR Frameshift Variant in Weimaraner Dogs with an Exercise-Induced Paroxysmal Movement Disorder. Mov Disord 2023; 38:1094-1099. [PMID: 37023257 DOI: 10.1002/mds.29391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/30/2023] [Accepted: 03/10/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Some paroxysmal movement disorders remain without an identified genetic cause. OBJECTIVES The aim was to identify the causal genetic variant for a paroxysmal dystonia-ataxia syndrome in Weimaraner dogs. METHODS Clinical and diagnostic investigations were performed. Whole genome sequencing of one affected dog was used to identify private homozygous variants against 921 control genomes. RESULTS Four Weimaraners were presented for episodes of abnormal gait. Results of examinations and diagnostic investigations were unremarkable. Whole genome sequencing revealed a private frameshift variant in the TNR (tenascin-R) gene in an affected dog, XM_038542431.1:c.831dupC, which is predicted to truncate more than 75% of the open read frame. Genotypes in a cohort of 4 affected and 70 unaffected Weimaraners showed perfect association with the disease phenotype. CONCLUSIONS We report the association of a TNR variant with a paroxysmal dystonia-ataxia syndrome in Weimaraners. It might be relevant to include sequencing of this gene in diagnosing humans with unexplained paroxysmal movement disorders. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Matthias Christen
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Rodrigo Gutierrez-Quintana
- Small Animal Hospital, School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, Glasgow, United Kingdom
| | | | - Kiterie M E Faller
- Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Roslin, United Kingdom
| | - Mark Lowrie
- Dovecote Veterinary Hospital, Derby, United Kingdom
| | - Clare Rusbridge
- School of Veterinary Medicine, University of Surrey, Surrey, United Kingdom
| | - Kenny Bossens
- Nesto Veterinary Referral Center Orion, Herentals, Belgium
| | - Cathryn Mellersh
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Louise Pettitt
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Tiina Heinonen
- Department of Medical and Clinical Genetics, Department of Veterinary Biosciences, University of Helsinki, and Folkhälsan Research Center, Helsinki, Finland
| | - Hannes Lohi
- Department of Medical and Clinical Genetics, Department of Veterinary Biosciences, University of Helsinki, and Folkhälsan Research Center, Helsinki, Finland
| | - Vidhya Jagannathan
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Tosso Leeb
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Martins-da-Silva A, Baroni M, Salomão KB, das Chagas PF, Bonfim-Silva R, Geron L, Cruzeiro GAV, da Silva WA, Corrêa CAP, Carlotti CG, de Paula Queiroz RG, Marie SKN, Brandalise SR, Yunes JA, Scrideli CA, Valera ET, Tone LG. Clinical Prognostic Implications of Wnt Hub Genes Expression in Medulloblastoma. Cell Mol Neurobiol 2023; 43:813-826. [PMID: 35366170 DOI: 10.1007/s10571-022-01217-4] [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: 07/13/2021] [Accepted: 03/22/2022] [Indexed: 11/03/2022]
Abstract
Medulloblastoma is the most common type of pediatric malignant primary brain tumor, and about one-third of patients die due to disease recurrence and most survivors suffer from long-term side effects. MB is clinically, genetically, and epigenetically heterogeneous and subdivided into at least four molecular subgroups: WNT, SHH, Group 3, and Group 4. We evaluated common differentially expressed genes between a Brazilian RNA-seq GSE181293 dataset and microarray GSE85217 dataset cohort of pediatric MB samples using bioinformatics methodology in order to identify hub genes of the molecular subgroups based on PPI network construction, survival and functional analysis. The main finding was the identification of five hub genes from the WNT subgroup that are tumor suppressors, and whose lower expression is related to a worse prognosis for MB patients. Furthermore, the common genes correlated with the five tumor suppressors participate in important pathways and processes for tumor initiation and progression, as well as development and differentiation, and some of them control cell stemness and pluripotency. These genes have not yet been studied within the context of MB, representing new important elements for investigation in the search for therapeutic targets, prognostic markers or for understanding of MB biology.
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Affiliation(s)
- Andrea Martins-da-Silva
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.
| | - Mirella Baroni
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Karina Bezerra Salomão
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Pablo Ferreira das Chagas
- Department of Genetics, Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Ricardo Bonfim-Silva
- Department of Surgery and Anatomy, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Lenisa Geron
- Department of Genetics, Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Gustavo Alencastro Veiga Cruzeiro
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.,Department of Pediatric Oncology, Harvard Medical School - Dana-Farber Cancer Institute, Boston, MA, USA
| | - Wilson Araújo da Silva
- Department of Genetics, Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Carolina Alves Pereira Corrêa
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Carlos Gilberto Carlotti
- Department of Surgery and Anatomy, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Rosane Gomes de Paula Queiroz
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | | | | | | | - Carlos Alberto Scrideli
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.,Department of Genetics, Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Elvis Terci Valera
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Luiz Gonzaga Tone
- Department of Pediatrics, University Hospital - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil.,Department of Genetics, Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
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John U, Patro N, Patro I. Perineuronal nets: Cruise from a honeycomb to the safety nets. Brain Res Bull 2022; 190:179-194. [DOI: 10.1016/j.brainresbull.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/17/2022] [Accepted: 10/05/2022] [Indexed: 11/30/2022]
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Browne CA, Conant K, Lasek AW, Nacher J. Editorial: Perineuronal Nets as Therapeutic Targets for the Treatment of Neuropsychiatric Disorders. Front Synaptic Neurosci 2022; 14:889800. [PMID: 35782789 PMCID: PMC9240763 DOI: 10.3389/fnsyn.2022.889800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Caroline A. Browne
- Department of Pharmacology & Molecular Therapeutics, Uniformed Services University, Bethesda, MD, United States
- *Correspondence: Caroline A. Browne
| | - Katherine Conant
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC, United States
| | - Amy W. Lasek
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, United States
| | - Juan Nacher
- Neurobiology Unit, Program in Neurosciences and Institute of Biotechnology and Biomedicine (BIOTECMED), Universitat de València, Burjassot, Spain
- Spanish National Network for Research in Mental Health, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
- Fundación Investigación Hospital Clínico de Valencia, INCLIVA, Valencia, Spain
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Mueller-Buehl C, Reinhard J, Roll L, Bader V, Winklhofer KF, Faissner A. Brevican, Neurocan, Tenascin-C, and Tenascin-R Act as Important Regulators of the Interplay Between Perineuronal Nets, Synaptic Integrity, Inhibitory Interneurons, and Otx2. Front Cell Dev Biol 2022; 10:886527. [PMID: 35721494 PMCID: PMC9201762 DOI: 10.3389/fcell.2022.886527] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
Fast-spiking parvalbumin interneurons are critical for the function of mature cortical inhibitory circuits. Most of these neurons are enwrapped by a specialized extracellular matrix (ECM) structure called perineuronal net (PNN), which can regulate their synaptic input. In this study, we investigated the relationship between PNNs, parvalbumin interneurons, and synaptic distribution on these cells in the adult primary visual cortex (V1) of quadruple knockout mice deficient for the ECM molecules brevican, neurocan, tenascin-C, and tenascin-R. We used super-resolution structured illumination microscopy (SIM) to analyze PNN structure and associated synapses. In addition, we examined parvalbumin and calretinin interneuron populations. We observed a reduction in the number of PNN-enwrapped cells and clear disorganization of the PNN structure in the quadruple knockout V1. This was accompanied by an imbalance of inhibitory and excitatory synapses with a reduction of inhibitory and an increase of excitatory synaptic elements along the PNNs. Furthermore, the number of parvalbumin interneurons was reduced in the quadruple knockout, while calretinin interneurons, which do not wear PNNs, did not display differences in number. Interestingly, we found the transcription factor Otx2 homeoprotein positive cell population also reduced. Otx2 is crucial for parvalbumin interneuron and PNN maturation, and a positive feedback loop between these parameters has been described. Collectively, these data indicate an important role of brevican, neurocan, tenascin-C, and tenascin-R in regulating the interplay between PNNs, inhibitory interneurons, synaptic distribution, and Otx2 in the V1.
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Affiliation(s)
- Cornelius Mueller-Buehl
- Department of Cell Morphology and Molecular Neurobiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Jacqueline Reinhard
- Department of Cell Morphology and Molecular Neurobiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Lars Roll
- Department of Cell Morphology and Molecular Neurobiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Verian Bader
- Department of Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, Bochum, Germany
- Department of Biochemistry of Neurodegenerative Diseases, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, Bochum, Germany
| | - Konstanze F. Winklhofer
- Department of Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, Bochum, Germany
- Cluster of Excellence RESOLV, Ruhr University Bochum, Bochum, Germany
| | - Andreas Faissner
- Department of Cell Morphology and Molecular Neurobiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
- *Correspondence: Andreas Faissner,
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Brandenburg C, Blatt GJ. Region-Specific Alterations of Perineuronal Net Expression in Postmortem Autism Brain Tissue. Front Mol Neurosci 2022; 15:838918. [PMID: 35493330 PMCID: PMC9043328 DOI: 10.3389/fnmol.2022.838918] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Genetic variance in autism spectrum disorder (ASD) is often associated with mechanisms that broadly fall into the category of neuroplasticity. Parvalbumin positive neurons and their surrounding perineuronal nets (PNNs) are important factors in critical period plasticity and have both been implicated in ASD. PNNs are found in high density within output structures of the cerebellum and basal ganglia, two regions that are densely connected to many other brain areas and have the potential to participate in the diverse array of symptoms present in an ASD diagnosis. The dentate nucleus (DN) and globus pallidus (GP) were therefore assessed for differences in PNN expression in human postmortem ASD brain tissue. While Purkinje cell loss is a consistent neuropathological finding in ASD, in this cohort, the Purkinje cell targets within the DN did not show differences in number of cells with or without a PNN. However, the density of parvalbumin positive neurons with a PNN were significantly reduced in the GP internus and externus of ASD cases, which was not dependent on seizure status. It is unclear whether these alterations manifest during development or are a consequence of activity-dependent mechanisms that lead to altered network dynamics later in life.
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Affiliation(s)
- Cheryl Brandenburg
- Hussman Institute for Autism, Baltimore, MD, United States
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, United States
- *Correspondence: Cheryl Brandenburg,
| | - Gene J. Blatt
- Hussman Institute for Autism, Baltimore, MD, United States
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