title: Cortisol responses to psychosocial stress predict depression trajectories: social-evaluative threat and prior depressive episodes as moderators.
abstract: BACKGROUND
  Alterations of hypothalamic-pituitary-adrenal (HPA) function are well-established in adults with current depression. HPA alterations may persist into remission and confer increased risk for recurrence.
  
  
  METHODS
  A modified version of the Trier Social Stress Test (TSST) was administered at baseline to 32 young adults with remitted major depressive disorder and 36 never-depressed controls. Participants were randomly assigned to either a 'high-stress' condition involving social evaluation or a 'low-stress' control condition. Cortisol concentrations were measured in saliva samples throughout the TSST. Participants were assessed again after 6 months for the occurrence of stressful life events and depressive symptoms/disorders during the follow-up period.
  
  
  RESULTS
  Participants who exhibited enhanced cortisol reactivity in the low-stress condition showed increases in depressive symptoms over follow-up, after controlling for stressful life events during the follow-up period. Anticipatory stress cortisol and cortisol reactivity each interacted with history of depressive episodes to predict depression trajectories.
  
  
  CONCLUSIONS
  The single TSST administration limits conclusions about whether alterations of cortisol reactivity represent trait-like vulnerability factors or consequences ("scars') of past depression.
  
  
  CONCLUSIONS
  These results extend previous findings on stress sensitivity in depression and suggest that altered HPA function during remission could reflect an endophenotype for vulnerability to depression recurrence. Findings support interactive models of risk for depression recurrence implicating HPA function, depression history, and sensitivity to minor stressors. Results may have implications for interventions that match treatment approaches to profiles of HPA function.
authors.affiliation: Center for Molecular and Behavioral Neuroscience, Meharry Medical College, Nashville, TN 37208, USA. mmorris@mmc.edu
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Morris
authors.forename: Uma
authors.initials: U
authors.lastname: Rao
authors.forename: Judy
authors.initials: J
authors.lastname: Garber
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000032:analysis / Q000378:metabolism; D002908:Chronic Disease; D003866:Depressive Disorder / Q000503:physiopathology; D003865:Major Depressive Disorder / Q000378:metabolism* / Q000503:physiopathology / Q000523:psychology; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis / Q000378:metabolism*; D007030:Hypothalamo-Hypophyseal System / Q000503:physiopathology; D008016:Life Change Events; D008297:Male; D010913:Pituitary-Adrenal System / Q000503:physiopathology; D012008:Recurrence; D012307:Risk Factors; D012463:Saliva / Q000737:chemistry*; D013315:Stress, Psychological / Q000378:metabolism* / Q000503:physiopathology / Q000523:psychology; D055815:Young Adult
chemical_list: D015415:Biomarkers; D006854:Hydrocortisone