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Hypothalamic-pituitary-adrenal axis function and suicidal behavior in depression.

A Roy1

  • 1Hillside Hospital, Glen Oaks, NY 11004.

Biological Psychiatry
|November 1, 1992
PubMed
Summary
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Hypothalamic-pituitary-adrenal (HPA) axis dysregulation may predict violent suicide attempts in depressed individuals. Cortisol levels and nonsuppression were higher in those with violent attempts, suggesting a link to HPA axis function.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Endocrinology

Background:

  • The hypothalamic-pituitary-adrenal (HPA) axis is implicated in stress response and mood disorders.
  • Dysregulation of the HPA axis is frequently observed in major depressive disorder.
  • The relationship between HPA axis function and suicidal behavior requires further elucidation.

Purpose of the Study:

  • To investigate the association between HPA axis function and suicidal behavior in patients with depression.
  • To differentiate HPA axis activity in depressed patients with and without a history of suicide attempts.
  • To explore if HPA axis markers predict violent versus nonviolent suicide attempts.

Main Methods:

  • Assessed HPA axis function using cerebrospinal fluid corticotropin-releasing hormone, plasma cortisol (pre- and post-dexamethasone), and urinary-free cortisol.

Related Experiment Videos

  • Compared HPA axis indices between depressed patients with and without suicide attempts.
  • Categorized suicide attempts as violent or nonviolent.
  • Conducted a 5-year follow-up to assess reattempts and HPA function.

    • Main Results:

    • No significant differences in HPA axis function were found between depressed patients who had or had not attempted suicide.
    • Depressed patients with violent suicide attempts exhibited significantly higher 4 PM and maximum post-dexamethasone plasma cortisol levels.
    • A greater proportion of patients with violent suicide attempts were cortisol nonsuppressors compared to those with nonviolent attempts.
    • No significant differences in HPA function were observed during the 5-year follow-up regarding suicide reattempts.

    Conclusions:

    • HPA axis dysregulation may be a determinant of violent suicidal behavior in depression.
    • Specific HPA axis markers, particularly cortisol nonsuppression and elevated cortisol levels, are associated with violent suicide attempts.
    • These findings highlight potential biological markers for assessing suicide risk in depressed populations.