Cited by 35Neuroscience and Neuropharmacology ResearchGrowth Hormone and Insulin-like Growth FactorsMemory and Neural Mechanisms

Growth hormone modulates hippocampal excitatory synaptic transmission and plasticity in old rats

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Molina, Doris P., Ariwodola, Olusegun J., Linville, Constance, Sonntag, William E., Weiner, Jeff L., Brunso-Bechtold, Judy K., Adams, Michelle M.·2012·Neurobiology of Aging

Abstract

Alterations in the alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA-R) receptor and N-methyl-D-aspartate receptor (NMDA-R) have been documented in aged animals and may contribute to changes in hippocampal-dependent memory. Growth Hormone (GH) regulates AMPA-R and NMDA-R-dependent excitatory transmission and decreases with age. Chronic GH treatment mitigates age-related cognitive decline. An in vitro CA1 hippocampal slice preparation was used to compare hippocampal excitatory transmission and plasticity in old animals treated for 6–8 months with either saline or GH. Our findings indicate that GH treatment restores NMDA-R dependent basal synaptic transmission in old rats to young adult levels and enhances both AMPA-R-dependent basal synaptic transmission and long-term potentiation. These alterations in synaptic function occurred in the absence of changes in presynaptic function, as measured by paired-pulse ratios, the total protein levels of AMPA-R and NMDA-R subunits or in plasma or hippocampal levels of insulin-like growth factor-I. These data suggest a direct role for GH in altering age-related changes in excitatory transmission and provide a possible cellular mechanism through which GH changes the course of cognitive decline.

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Crossref · 10.1016/j.neurobiolaging.2011.09.014

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Authors
Molina, D. P., Ariwodola, O. J., Linville, C., Sonntag, W. E., Weiner, J. L., Brunso-Bechtold, J. K., & Adams, M. M.
Affiliations
  • Wake Forest University Health Sciences (US)
  • Bilkent University (TR)
Corresponding author
Adams, Michelle M.
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
2012-09
Volume
33
Issue
9
Pages
1938-1949
ISSN
0197-4580 (ISSN-L)
OpenAlex
W2014619784
Cited by
35
References
70
Citations by year
2025: 1 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 3 · 2019: 1 · 2018: 3 · 2015: 5 · 2014: 4 · 2013: 5 · 2012: 1
FWCI
1.32
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Aging (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Bilkent University Institutional Repository (Bilkent University) (submittedVersion)
Funders
NIH (PO1 AG11370, KO1 AG027828)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
growth hormone, hippocampus, synaptic transmission, synaptic plasticity, long-term potentiation, AMPA receptors, NMDA receptor, aging, age-related cognitive decline, insulin-like growth factor I, excitatory synapses, paired-pulse ratio
MeSH terms
Aging, Analysis of Variance, Animals, Bicuculline, Biophysics, Electric Stimulation, Enzyme-Linked Immunosorbent Assay, Glycine, Hippocampus, Insulin-Like Growth Factor I, Male, Synaptic Transmission, Rats, Inbred F344, Receptors, N-Methyl-D-Aspartate, Long-Term Potentiation, Receptors, AMPA, alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid, Patch-Clamp Techniques, Excitatory Amino Acid Agonists, Excitatory Amino Acid Antagonists, Excitatory Postsynaptic Potentials, Intercellular Signaling Peptides and Proteins, Rats, GABA-A Receptor Antagonists, In Vitro Techniques

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