MK4MDD

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Study Report

Reference

Citation	Rao, 2008 PubMed
Full Info	Rao, U., Hammen, C., Ortiz, L.R., Chen, L.A. and Poland, R.E. (2008) Effects of early and recent adverse experiences on adrenal response to psychosocial stress in depressed adolescents. Biol Psychiatry, 64, 521-526.

Study

Hypothesis or Background	As observed in depressed adults, there is considerable variability in the degree and direction of hypothalamic-pituitary-adrenal (HPA) dysfunction in depressed adolescents. The variability in HPA findings may be attributed to experiential factors.
Sample Information	30 adolescents with major depressive disorder and 25 healthy adolescent volunteers
Method Detail	A modified version of a standard psychosocial stressor used in adults, the Trier Social Stress Test (TSST), was administered to 30 adolescents with major depressive disorder and 25 healthy adolescent volunteers. Cortisol concentrations were measured in saliva samples collected before and after the stressor. Information was also gathered on early and recent adverse experiences with standard interviews.
Method Keywords	salivary analysis
Result	Participants from both groups had increased cortisol secretion in response to TSST. Compared with control subjects, depressed subjects showed more elevated and prolonged cortisol secretion in response to TSST. The combination of early-life adversity and high levels of chronic stress during adolescence was the most powerful predictor of enhanced adrenal response to the TSST.
Conclusions	These results support previous findings on the role of experiential factors on HPA response to stress and in the development of mood disorders. Dissection of the heterogeneous pathophysiology of adolescent depression will assist in developing more specific interventions for different subgroups of patients.

Relationships reported by Rao, 2008