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Title

Blocking mineralocorticoid receptors impairs, blocking glucocorticoid receptors enhances memory retrieval in humans

Authors
Besedovsky, Luciana
Lange, Tanja
Born, Jan
Published in Neuropsychopharmacology. 2013, vol. 38, no. 5, p. 884-94
Abstract Memory retrieval is impaired at very low as well as very high cortisol levels, but not at intermediate levels. This inverted-U-shaped relationship between cortisol levels and memory retrieval may originate from different roles of the mineralocorticoid (MR) and glucocorticoid receptor (GR) that bind cortisol with distinctly different affinity. Here, we examined the role of MRs and GRs in human memory retrieval using specific receptor antagonists. In two double-blind within-subject, cross-over designed studies, young healthy men were asked to retrieve emotional and neutral texts and pictures (learnt 3 days earlier) between 0745 and 0915 hours in the morning, either after administration of 400 mg of the MR blocker spironolactone vs placebo (200 mg at 2300 hours and 200 mg at 0400 hours, Study I) or after administration of the GR blocker mifepristone vs placebo (200 mg at 2300 hours, Study II). Blockade of MRs impaired free recall of both texts and pictures particularly for emotional material. In contrast, blockade of GRs resulted in better memory retrieval for pictures, with the effect being more pronounced for neutral than emotional materials. These findings indicate indeed opposing roles of MRs and GRs in memory retrieval, with optimal retrieval at intermediate cortisol levels likely mediated by high MR but concurrently low GR activation.
Keywords AdolescentAdultDouble-Blind MethodHormone Antagonists/pharmacologyHumansMaleMental Recall/drug effects/physiologyMifepristone/pharmacologyMineralocorticoid Receptor Antagonists/pharmacologyNeuropsychological TestsPhotic StimulationReceptors, Glucocorticoid/drug effectsReceptors, Mineralocorticoid/drug effectsSleep/drug effectsSpironolactone/pharmacologyTime FactorsYoung Adult
Identifiers
PMID: 23303058
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Structures
Research group Mécanismes cérébraux du comportement et des fonctions cognitives (701)
Projects FNS: PZ00P1_13126
FNS: PBZH1- 118850
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RIMMELE, Ulrike et al. Blocking mineralocorticoid receptors impairs, blocking glucocorticoid receptors enhances memory retrieval in humans. In: Neuropsychopharmacology, 2013, vol. 38, n° 5, p. 884-94. https://archive-ouverte.unige.ch/unige:40219

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Deposited on : 2014-09-16

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