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Exploring the molecular mechanisms of glucocorticoid receptor action from sensitivity to resistance

Sivapriya Ramamoorthy1, John A Cidlowski

  • 1Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, N.C., USA.

Endocrine Development
|February 9, 2013
PubMed

Insights

Glucocorticoid sensitivity varies due to ligand availability and the glucocorticoid receptor (GR). Understanding these mechanisms is key to managing glucocorticoid resistance during long-term therapy.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Pharmacology

Background:

  • Glucocorticoids are vital hormones regulating inflammation, immunity, and metabolism.
  • Glucocorticoid action is primarily mediated by the glucocorticoid receptor (GR).
  • Individual and tissue-specific variations in glucocorticoid sensitivity are clinically significant.

Purpose of the Study:

  • To summarize mechanisms modulating glucocorticoid sensitivity and resistance.
  • To focus on glucocorticoid receptor (GR)-mediated signaling pathways.
  • To provide insights into genomic glucocorticoid actions.

Main Methods:

  • Review of current literature on glucocorticoid signaling.
  • Analysis of factors influencing bioavailable ligand generation.
  • Examination of glucocorticoid receptor (GR) molecular heterogeneity.

Main Results:

  • Glucocorticoid sensitivity is influenced by ligand availability and GR molecular characteristics.
  • Long-term or high-dose glucocorticoid use can lead to reduced sensitivity or resistance.
  • GR-mediated signaling is central to understanding these modulations.

Conclusions:

  • Understanding the molecular basis of glucocorticoid sensitivity is crucial for effective therapeutic use.
  • Mechanisms regulating GR signaling offer insights into overcoming glucocorticoid resistance.
  • Further research into hormone signaling dynamics can optimize glucocorticoid therapies.

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