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Neuroendocrine aspects of suicidal behavior
R Yehuda1, S M Southwick, R B Ostroff
1Department of Psychiatry, Yale University School of Medicine, New Haven, Waterbury, Connecticut.
Neurologic Clinics
|February 1, 1988
Summary
Understanding suicidal behavior requires distinguishing prospective and retrospective study designs. Research suggests hypothalamic-pituitary-adrenal axis overactivity and altered serotonin/adrenergic metabolism are key biologic risk factors.
Area of Science:
- Neuroscience
- Psychiatry
- Behavioral Biology
Background:
- Accurate assessment of biologic risk factors in suicidal behavior necessitates differentiating study designs.
- Prospective studies are better for identifying potential risk factors, while retrospective studies may indicate biologic traits.
Purpose of the Study:
- To evaluate the significance of study design (prospective vs. retrospective) in assessing biologic risk factors for suicidal behavior.
- To highlight the importance of timing of measurements in relation to suicidal behavior.
Main Methods:
- Review of existing literature distinguishing prospective and retrospective research designs.
- Analysis of biologic markers associated with suicidal behavior, including hypothalamic-pituitary-adrenal axis and neurotransmitter metabolism.
Main Results:
- Measures taken closer to the time of a suicide attempt are more reflective of the individual's biologic state.
- Evidence points to overactivity of the hypothalamic-pituitary-adrenal axis and dysregulation in serotonin and adrenergic metabolism in suicidal individuals.
Conclusions:
- A multivariate biologic approach, considering interrelated systems like the hypothalamic-pituitary-adrenal axis and monoamine metabolism, is crucial for understanding suicide pathophysiology.
- Distinguishing study designs and timing of biologic assessments are critical for accurate risk factor evaluation.