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Hormones and the stressed brain.

E Ronald De Kloet1

  • 1Division of Medical Pharmacology, LACDR/LUMC, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands. e.kloet@lacdr.leidenuniv.nl

Annals of the New York Academy of Sciences
|July 9, 2004
PubMed
Summary

Corticosteroid hormones, like cortisol, regulate stress responses through two key receptor systems. Maintaining balance between these systems is vital for mental health and preventing stress-related disorders.

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Area of Science:

  • Neuroendocrinology
  • Stress Physiology
  • Molecular Biology

Background:

  • The stress system integrates environmental stimuli via hormones like cortisol.
  • Cortisol's actions are diverse, influencing molecular, membrane, and transcriptional processes.
  • Individual differences in stress coping are linked to genetic and experiential factors.

Purpose of the Study:

  • To elucidate the dual modes of corticosteroid hormone action in stress regulation.
  • To explore the roles of mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs) in stress response.
  • To understand the implications of stress system imbalance for cognition, emotion, and health.

Main Methods:

  • Analysis of corticosteroid hormone actions via high-affinity MRs and low-affinity GRs.
  • Investigation of gene transcription regulation by corticosteroid hormones.
  • Examination of the interplay between MRs, GRs, corticotropin-releasing hormone (CRH) receptors, and the parasympathetic system.

Main Results:

  • MRs stabilize neuronal activity for immediate stress responses.
  • GRs facilitate homeostasis recovery, energy storage, and adaptation during stress.
  • Imbalances in this dual system disrupt neural pathways, impacting cognition and emotion.

Conclusions:

  • The yin-yang balance between MR and GR pathways is crucial for cell homeostasis, mental performance, and overall health.
  • Dysregulation of this balance contributes to corticosteroid-induced stress-related disorders, including severe depression.
  • Understanding these genomic mechanisms is key for developing therapeutic strategies for stress-related conditions.

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