Cited by 39Muscle Physiology and DisordersNeurogenetic and Muscular Disorders ResearchGenetics and Neurodevelopmental Disorders

Brain Dysfunction in LAMA2-Related Congenital Muscular Dystrophy: Lessons From Human Case Reports and Mouse Models

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Arreguin, Andrea J., Colognato, Holly·2020·Frontiers in Molecular Neuroscience

Abstract

Laminin a2 gene (LAMA2)-related Congenital Muscular Dystrophy was distinguished by a defining central nervous system (CNS) abnormality - aberrant white matter signals by MRI - when first described in the 1990s. In the past 25 years, researchers and clinicians have expanded our knowledge of brain involvement in LAMA2-related Congenital Muscular Dystrophy (CMD), also known as Congenital Muscular Dystrophy Type 1A (MDC1A). Neurological changes in MDC1A can be structural, including lissencephaly and agyria, as well as functional, including epilepsy and intellectual disability. Mouse models of MDC1A include both spontaneous and targeted LAMA2 mutations and range from a partial loss of LAMA2 function (e.g., dy2J/dy2J), to a complete loss of LAMA2 expression (dy3K/dy3K). Diverse cellular and molecular changes have been reported in the brains of MDC1A mouse models, including blood-brain barrier dysfunction, altered neuro- and gliogenesis, changes in synaptic plasticity, and decreased myelination, providing mechanistic insight into potential neurological dysfunction in MDC1A. In this review, we discuss selected studies that illustrate the potential scope and complexity of disturbances in brain development in MDC1A, and as well as highlight mechanistic insights that are emerging from mouse models.

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Crossref · 10.3389/fnmol.2020.00118

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Authors
Arreguin, A. J., & Colognato, H.
Affiliations
Stony Brook University (US)
Corresponding author
Colognato, Holly
Venue
Frontiers in Molecular Neuroscience
Published
2020-07-23
Volume
13
Pages
118-118
ISSN
1662-5099 (ISSN-L)
OpenAlex
W3044690787
Cited by
39
References
134
Citations by year
2026: 3 · 2025: 9 · 2024: 10 · 2023: 8 · 2022: 4 · 2021: 5
FWCI
1.38
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Molecular Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health
  • National Multiple Sclerosis Society
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Genetics › Neurogenetic and Muscular Disorders Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
MDC1A, laminin alpha 2, brain dysfunction, lissencephaly, agenesis of the corpus callosum, epilepsy, intellectual disability, white matter abnormalities, blood-brain barrier dysfunction, neurogenesis, gliogenesis, synaptic plasticity, myelination, mouse model

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