Cited by 154Stress Responses and CortisolMemory and Neural MechanismsNeurogenesis and neuroplasticity mechanisms

Effect of chronic high-dose exogenous cortisol on hippocampal neuronal number in aged nonhuman primates

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Leverenz, James B., Wilkinson, Charles W., Wamble, Molly, Corbin, Shannon, Grabber, Jo Ellen, Raskind, Murray A., Peskind, Elaine R.·1999·The Journal of Neuroscience

Abstract

Chronic exposure to increased glucocorticoid concentrations appears to lower the threshold for hippocampal neuronal degeneration in the old rat. It has been proposed that increased brain exposure to glucocorticoids may lower the threshold for hippocampal neuronal degeneration in human aging and Alzheimer's disease. Here, we asked whether chronic administration of high-dose cortisol to older nonhuman primates decreases hippocampal neuronal number as assessed by unbiased stereological counting methodology. Sixteen Macaca nemestrina (pigtailed macaques) from 18 to 29 years of age were age-, sex-, and weight-matched into pairs and randomized to receive either high-dose oral hydrocortisone (cortisol) acetate (4-6 mg/kg/d) or placebo in twice daily palatable treats for 12 months. Hypothalamic-pituitary-adrenal activity was monitored by measuring plasma adrenocorticotropin and cortisol, 24 hr urinary cortisol, and CSF cortisol. Urinary, plasma, and CSF cortisol were elevated, and plasma adrenocorticotropin was reduced in the active treatment group. Total hippocampal volume, subfield volumes, subfield neuronal density, and subfield total neuronal number did not differ between the experimental groups. These findings suggest that chronically elevated cortisol concentrations, in the absence of stress, do not produce hippocampal neuronal loss in nonhuman primates.

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Crossref · 10.1523/jneurosci.19-06-02356.1999

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  1. Schimmer BP, Parker K L (1996) Adrenocorticotropic hormone, adreno- cortical steroids and their synthetic analogs: inhibitors of the synthesis and actions of adrenocortical hormones. In: Goodman & Gilman's the pharmacological basis of therapeutics, Ed 9 (Hardman JG, Limbird LE, eds) pp 1459 -1485. New York: McGraw-Hill.

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Authors
Leverenz, J. B., Wilkinson, C. W., Wamble, M., Corbin, S., Grabber, J. E., Raskind, M. A., & Peskind, E. R.
Affiliations
  • University of Washington (US)
  • VA Puget Sound Health Care System (US)
Venue
The Journal of Neuroscience
Published
1999-03-15
Volume
19
Issue
6
Pages
2356-2361
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2158732391
Cited by
154
References
28
Citations by year
2026: 2 · 2024: 3 · 2023: 2 · 2021: 1 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 2 · 2014: 3 · 2013: 3 · 2012: 3
FWCI
7.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ResearchWorks at the University of Washington (University of Washington) (submittedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • Alzheimer's Association
  • National Institutes of Health
  • National Institute on Aging (AGO6136)
  • National Center for Research Resources (P51RR000166)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
glucocorticoids, hippocampal neurodegeneration, aging, non-human primates, macaque, cortisol, hypothalamic-pituitary-adrenal axis, ACTH, hippocampal subfields, Alzheimer's disease
MeSH terms
Aging, Animals, Cell Count, Dose-Response Relationship, Drug, Endocrine System, Female, Hippocampus, Hydrocortisone, Macaca nemestrina, Male, Neurons, Time Factors

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