Cited by 248Down syndrome and intellectual disability researchAlzheimer's disease research and treatmentsGenetics and Neurodevelopmental Disorders

The neurobiologie consequences of down syndrome

Coyle, J.T., Oster-Granite, M.L., Gearhart, J.D.·1986·Brain Research Bulletin

Abstract

Trisomy of the whole or distal part of human chromosome 21 (HSA 21) (Ts21) results in Down Syndrome (DS), which is characterized in part by mental retardation and associated neurological abnormalities. Structural abnormalities observed frequently include reduced brain weight, decreased number and depth of sulci in the cerebral cortices, neuronal heterotopias, and reduced numbers of specific populations of neurons, such as granule cells, in the cerebral cortices. Abnormalities in the structure of cells, primarily of the dendrites, are observed in portions of the neuraxis, such as the hippocampus, cerebellum, and cerebral cortices. Functional abnormalities in membrane properties in peripheral structures and in neurotransmitter enzyme systems in both peripheral and central structures are observed also. Brains of DS individuals over the age of 40 exhibit the characteristic neuropathologic and neurochemical stigmata of Alzheimer's disease (AD). The cholinergic and noradrenergic systems appear to be particularly vulnerable. To elucidate the mechanisms responsible for these abnormalities, identification of the genes located in the distal part of HSA 21 and the systematic study of animal model systems with close genetic homology are essential.

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Crossref · 10.1016/0361-9230(86)90074-2

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  • The temporal and frontal lobes, neural correlates of cognitive domains affected in Down syndrome, are smaller in individuals with Down syndrome than in healthy controls.

    “The neural correlates of these cognitive domains, namely the temporal and frontal lobes, are smaller in individuals with DS than in healthy controls2–4.”

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Authors
Coyle, J. T., Oster-Granite, M. L., & Gearhart, J. D.
Affiliations
Johns Hopkins University (US)
Corresponding author
Coyle, J.T.
Venue
Brain Research Bulletin
Publisher
Elsevier BV
Published
1986-06
Volume
16
Issue
6
Pages
773-787
ISSN
0361-9230 (ISSN-L)
OpenAlex
W1991528700
Cited by
248
References
8
Citations by year
2026: 2 · 2025: 1 · 2024: 7 · 2023: 3 · 2022: 2 · 2021: 7 · 2020: 2 · 2019: 6 · 2018: 9 · 2017: 7 · 2016: 1 · 2015: 3 · 2014: 4 · 2013: 4 · 2012: 7
FWCI
4.19
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Mental Health (MH 26654)
  • National Institute of Neurological Disorders and Stroke (NS-18414)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD16303)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
Down syndrome, chromosome 21, intellectual disability, structural brain abnormalities, neuronal heterotopia, granule cells, dendritic abnormalities, hippocampus, cerebellum, membrane properties, Alzheimer's disease, cholinergic system, noradrenergic system, animal models, neurobiology
MeSH terms
Aging, Alzheimer Disease, Autonomic Nervous System, Brain, Cell Membrane, Down Syndrome, Humans, Neurotransmitter Agents

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