Cited by 51Nerve injury and regenerationNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

Deficits in LTP and recognition memory in the genetically hypertensive rat are associated with decreased expression of neurotrophic factors and their receptors in the dentate gyrus

Hennigan, Amy, Callaghan, Charlotte K., Kealy, John, Rouine, Jennifer, Kelly, Áine M.·2009·Behavioural Brain Research

Abstract

We have previously reported that a genetically hypertensive strain of Wistar rat (GH), is deficient in nerve growth factor (NGF) and Trk receptors in dentate gyrus and that these deficits are accompanied by impaired expression of long-term potentiation (LTP) in perforant path-granule cell synapses. Here we confirm this deficit in LTP and report that this strain of rat also displays impairments in long-term recognition memory when compared with normotensive controls. Further analysis of neurotrophin expression in dentate gyrus confirmed the previously-reported deficit in NGF and revealed a decrease in expression of brain-derived neurotrophic factor (BDNF), but not neurotrophin 3 (NT3) or neurotrophin 4 (NT4), in GH rats. These alterations in ligand expression were accompanied by changes in Trk receptor expression; specifically, a decrease in expression of TrkA and TrkB, but not TrkC, in the dentate gyrus of GH, compared with normotensive, rats. We conclude that the impairments in LTP and learning and memory observed in the GH strain are associated with aberrant expression of specific neurotrophic factors and their receptors in the dentate gyrus, adding weight to the evidence indicating a role for these proteins in several forms of synaptic plasticity.

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Crossref · 10.1016/j.bbr.2008.09.037

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Authors
Hennigan, A., Callaghan, C. K., Kealy, J., Rouine, J., & Kelly, Á. M.
Affiliations
Trinity College Dublin (IE)
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2009-02
Volume
197
Issue
2
Pages
371-377
ISSN
0166-4328 (ISSN-L)
OpenAlex
W1987340931
Cited by
51
References
45
Citations by year
2024: 3 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 6 · 2013: 6 · 2012: 3
FWCI
2.02
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Higher Education Authority
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
genetically hypertensive rats, long-term potentiation, recognition memory, neurotrophic factors, nerve growth factor, brain-derived neurotrophic factor, neurotrophin-3, neurotrophin-4, TrkA, TrkB, TrkC, dentate gyrus, synaptic plasticity, learning and memory impairment, hypertension
MeSH terms
Analysis of Variance, Animals, Disease Models, Animal, Enzyme-Linked Immunosorbent Assay, Hypertension, Male, Memory, Nerve Growth Factors, Blotting, Western, Rats, Wistar, Long-Term Potentiation, Dentate Gyrus, Brain-Derived Neurotrophic Factor, Receptor, trkC, Receptor, trkB, Receptor, trkA, Neurotrophin 3, Rats

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