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Σάββατο 22 Δεκεμβρίου 2018

Top‐down and Bottom‐up Control of Stress‐Coping

Abstract

In this 30th anniversary issue review, we focus on glucocorticoid modulation of limbic‐prefrontocortical circuitry during stress‐coping. This action of the stress hormone is mediated by mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs) that are co‐expressed abundantly in these higher brain regions. Via both receptor types, the glucocorticoids demonstrate, in various contexts, rapid nongenomic and slower genomic actions which coordinate consecutive stages of information processing. MR‐mediated action optimizes stress‐coping, while in complementary fashion, the memory storage of the selected coping strategy is promoted via GR. We highlight the involvement of adipose tissue in the allocation of energy resources to central regulation of stress reactions, point to still poorly‐understood neuronal ensembles in the prefrontal cortex that underlie cognitive flexibility critical for effective coping, and evaluate the role of cortisol as a pleiotropic regulator in vulnerability to, and treatment of, trauma‐related psychiatric disorders.

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