Cited by 58Down syndrome and intellectual disability researchNeuroscience and Neuropharmacology ResearchAlzheimer's disease research and treatments

Treating enhanced GABAergic inhibition in Down syndrome: Use of GABA α5-selective inverse agonists

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Martínez-Cué, Carmen, Delatour, Benoît, Potier, Marie-Claude·2014·Neuroscience & Biobehavioral Reviews

Abstract

Excess inhibition in the brain of individuals carrying an extra copy of chromosome 21 could be responsible for cognitive deficits observed throughout their lives. A change in the excitatory/inhibitory balance in adulthood would alter synaptic plasticity, potentially triggering learning and memory deficits. γ-Aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the mature central nervous system and binds to GABAA receptors, opens a chloride channel, and reduces neuronal excitability. In this review we discuss methods to alleviate neuronal inhibition in a mouse model of Down syndrome, the Ts65Dn mouse, using either an antagonist (pentylenetetrazol) or two different inverse agonists selective for the α5-subunit containing receptor. Both inverse agonists, which reduce inhibitory GABAergic transmission, could rescue learning and memory deficits in Ts65Dn mice. We also discuss safety issues since modulation of the excitatory-inhibitory balance to improve cognition without inducing seizures remains particularly difficult when using GABA antagonists.

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Crossref · 10.1016/j.neubiorev.2013.12.008

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  • The reduced capacity for long-term potentiation in Ts65Dn animals is driven by increased GABAergic neurotransmission, and pharmacological reduction of GABAergic neurotransmission is sufficient to rescue this long-term potentiation phenotype.

    “The reduced capacity for LTP is driven by increased GABAergic neurotransmission in these animals, and pharmacological reduction of GABAergic neurotransmission is sufficient to rescue this LTP phenotype127–129.”

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Authors
Martínez-Cué, C., Delatour, B., & Potier, M.-C.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Potier, Marie-Claude
Venue
Neuroscience & Biobehavioral Reviews
Publisher
Elsevier BV
Published
2014-10
Volume
46
Pages
218-227
ISSN
0149-7634 (ISSN-L)
OpenAlex
W2013872412
Cited by
58
References
123
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 2 · 2022: 8 · 2021: 3 · 2020: 3 · 2019: 7 · 2018: 2 · 2017: 11 · 2016: 5 · 2015: 6 · 2014: 4
FWCI
1.35
Type
journal article
Language
en
Open access
Locations
  • Neuroscience & Biobehavioral Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Agence Nationale de la Recherche (ANR Emmergence)
  • the Spanish Ministry of Economy and Competitiveness (PSI2012-33652)
  • Fondation Jérôme Lejeune
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
Down syndrome, GABAergic inhibition, GABAA receptor, inverse agonists, Ts65Dn mouse model, pentylenetetrazole, excitation-inhibition balance, learning and memory impairment, cognitive impairment, seizures, GABA antagonists
MeSH terms
Animals, Benzodiazepines, Down Syndrome, Humans, Imidazoles, Neural Inhibition, Pentylenetetrazole, Receptors, GABA-A, Nootropic Agents, Drug Inverse Agonism, GABA-A Receptor Antagonists

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