Cited by 441Stress Responses and CortisolMemory and Neural MechanismsAdrenal Hormones and Disorders

Glucocorticoid-induced impairment in declarative memory performance in adult humans

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Newcomer, JW, Craft, S, Hershey, T, Askins, K, Bardgett, ME·1994·The Journal of Neuroscience

Abstract

Glucocorticoids (GCs) have a variety of effects on the brain including site-preferential, inhibitory effects on hippocampal neurons. In the case of dexamethasone (DEX), extended rather than single-dose treatment in vivo may be required for binding to brain rather than peripheral (e.g., pituitary) GC receptors and for maximizing other biologic effects in hippocampus (e.g., GC receptor downregulation, inhibition of glucose transport). Based on the contributory role of hippocampal neurons in declarative memory performance, we investigated the cognitive consequences of DEX treatment in normal adult human subjects, hypothesizing a decrease in declarative memory performance after extended but not overnight treatment. Double-blind, placebo-controlled treatment with DEX was given at 2300 hr for four consecutive days (0.5, 1, 1, 1 mg, respectively). Plasma sampling (0800 and 1600 hr) and cognitive testing (1600 hr) were performed on study days 0 (baseline), 1, and 4, and 7 d posttreatment. Repeated-measures ANOVA found a significant interaction between study day and treatment condition for correct recall during a paragraph recall task [F(3,51) = 3.52, p = 0.02]. DEX (n = 10) in comparison to placebo (n = 9) treatment decreased correct paragraph recall on study day 4 [F(1,17) = 5.01, p = 0.04] and study day 11 [F(1,17) = 5.82, p = 0.03], with the lowest level of performance occurring on day 4 followed by a return toward baseline performance level by day 11. In the placebo-treated subjects, correct paragraph recall improved over the course of treatment, consistent with practice.(ABSTRACT TRUNCATED AT 250 WORDS)

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Crossref · 10.1523/jneurosci.14-04-02047.1994

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  1. Squire LR (1987) Memory and brain. New York: Oxford UP.

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Authors
Newcomer, J., Craft, S., Hershey, T., Askins, K., & Bardgett, M.
Affiliations
Washington University in St. Louis (US)
Venue
The Journal of Neuroscience
Published
1994-04-01
Volume
14
Issue
4
Pages
2047-2053
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1573050736
Cited by
441
References
53
Citations by year
2026: 1 · 2025: 7 · 2024: 5 · 2023: 6 · 2022: 3 · 2021: 7 · 2020: 9 · 2019: 10 · 2018: 6 · 2017: 5 · 2016: 9 · 2015: 10 · 2014: 12 · 2013: 11 · 2012: 14
FWCI
8.30
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1k20mh001045-01)
  • National Institute on Aging (AG10880)
  • National Institute of Mental Health (MH14677, MH-01045, T32MH014677)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
glucocorticoids, dexamethasone, declarative memory, hippocampus, cognitive impairment, memory consolidation, glucose transport inhibition
MeSH terms
Administration, Oral, Adult, Analysis of Variance, Cognition, Corticosterone, Dexamethasone, Double-Blind Method, Humans, Memory, Memory, Short-Term, Placebos, Reference Values, Time Factors

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