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Neural circuits mediating stress.

J F López1, H Akil, S J Watson

  • 1Department of Psychiatry, University of Michigan, Ann Arbor 48109, USA.

Biological Psychiatry
|December 22, 1999
PubMed
Summary
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Stress impacts mood and anxiety disorders by affecting the limbic-hypothalamic-pituitary-adrenal (LHPA) axis. Alterations in this stress circuit, particularly with serotonin interactions, underlie mood changes in conditions like depression.

Area of Science:

  • Neuroendocrinology
  • Neurobiology of Stress
  • Psychiatry

Background:

  • Stress is implicated in the development of mood and anxiety disorders.
  • Recent advancements have significantly improved our understanding of stress response circuits in the brain.
  • The limbic-hypothalamic-pituitary-adrenal (LHPA) axis is a key neuroendocrine pathway for stress.

Purpose of the Study:

  • To review animal and human studies on stress perception, processing, and neuroendocrine response.
  • To elucidate the pathways involved in the stress response, focusing on the LHPA axis.
  • To explore how stress affects mood through neurobiological mechanisms.

Main Methods:

  • Review of existing animal and human studies.
  • Analysis of research on the limbic-hypothalamic-pituitary-adrenal (LHPA) axis.

Related Experiment Videos

  • Investigation of neurotransmitter interactions, including serotonin.

    • Main Results:

    • The LHPA axis is a complex stress circuit with multiple regulatory mechanisms.
    • These regulatory mechanisms are disrupted in pathological conditions like chronic stress and depression.
    • Interactions between the LHPA axis and neurotransmitters like serotonin may explain stress-induced mood alterations.

    Conclusions:

    • The LHPA axis plays a critical role in the neurobiology of stress and mood disorders.
    • Dysregulation of the LHPA axis is a key feature in chronic stress and depression.
    • Serotonin pathways interacting with the LHPA axis are crucial for understanding the link between stress and mood.