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A.E. Bennett Research Award. Developmental traumatology. Part I: Biological stress systems
M D De Bellis1, A S Baum, B Birmaher
1Developmental Traumatology Laboratory, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA.
Biological Psychiatry
|June 1, 1999
Summary
Childhood trauma and PTSD are linked to altered stress hormone levels, including dopamine, norepinephrine, and cortisol. These biological changes correlate with symptom severity in maltreated children.
Area of Science:
- Child Psychology
- Neuroendocrinology
- Trauma Studies
Background:
- Investigated the link between child maltreatment, posttraumatic stress disorder (PTSD), and biological stress markers.
- Compared prepubertal children with PTSD, overanxious disorder (OAD), and healthy controls.
Purpose of the Study:
- To examine the relationship between trauma, psychiatric symptoms, and urinary stress hormone excretion (cortisol and catecholamines) in children.
- To understand the psychobiological impact of childhood maltreatment and PTSD.
Main Methods:
- Comprehensive psychiatric and clinical assessments were performed.
- Collected 24-hour urine samples to measure urinary free cortisol (UFC) and catecholamines (epinephrine, norepinephrine, dopamine).
- Compared biological and clinical measures using analyses of variance.
Main Results:
- Children with PTSD excreted significantly higher levels of urinary dopamine and norepinephrine compared to OAD and control groups.
- Higher urinary epinephrine excretion was observed in maltreated children with PTSD versus OAD.
- PTSD in childhood was associated with increased comorbid psychopathology, lower functioning, and suicidal ideation.
- Urinary catecholamine and UFC concentrations positively correlated with trauma duration and PTSD symptom severity.
Conclusions:
- Child maltreatment experiences are associated with significant alterations in biological stress systems in children with PTSD.
- Findings suggest a psychobiological basis for trauma responses in childhood.
- Improved understanding may lead to enhanced therapeutic interventions for childhood PTSD.