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Novel mechanisms for DHEA action.

Russell A Prough1, Barbara J Clark1, Carolyn M Klinge2

  • 1Department of Biochemistry and Molecular GeneticsCenter for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY, USA.

Journal of Molecular Endocrinology
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PubMed
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Dehydroepiandrosterone (DHEA) and its metabolite DHEA-S are abundant steroid hormones. This review explores their direct molecular actions beyond conversion to sex hormones, focusing on novel physiological pathways.

Keywords:
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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Neuroscience

Background:

  • Dehydroepiandrosterone (DHEA) and DHEA-S are the most abundant endogenous circulating steroid hormones.
  • Traditionally, DHEA's effects were attributed to its conversion into testosterone and estradiol.
  • Emerging evidence suggests DHEA and DHEA-S have direct roles in cellular signaling.

Purpose of the Study:

  • To review the molecular mechanisms of DHEA action.
  • To highlight novel and physiological modes of DHEA activity.
  • To focus on DHEA's direct ligand activity and cell signaling pathways.

Main Methods:

  • Literature review of molecular mechanisms.
  • Analysis of studies on DHEA action in cells and animal models.
  • Focus on direct receptor interactions and signaling pathways.

Main Results:

  • DHEA and DHEA-S act as direct ligands for hepatic nuclear receptors and G-protein-coupled receptors.
  • DHEA mediates acute cell signaling pathways independently of sex hormone conversion.
  • Evidence supports direct physiological roles for DHEA and DHEA-S.

Conclusions:

  • DHEA and DHEA-S possess direct molecular actions beyond their role as precursors to sex hormones.
  • These hormones engage in novel signaling pathways, influencing various physiological processes.
  • Understanding these direct actions is crucial for comprehending DHEA's full physiological impact.