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2015 ; 10
(8
): e0136921
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The Cortisol Paradox of Trauma-Related Disorders: Lower Phasic Responses but
Higher Tonic Levels of Cortisol Are Associated with Sexual Abuse in Childhood
#MMPMID26317554
Schalinski I
; Elbert T
; Steudte-Schmiedgen S
; Kirschbaum C
PLoS One
2015[]; 10
(8
): e0136921
PMID26317554
show ga
OBJECTIVES: Inconsistent findings exist for the activity of the
hypothalamic-pituitary-adrenal (HPA) axis in patients with stress related
disorders. Recent studies point towards early life stress as a potential
modulator. METHODS: We investigated the impact of childhood sexual abuse on
phasic (saliva cortisol reactivity) and tonic (hair cortisol) regulation.
Furthermore, we assessed predictors on cortisol accumulation in hair. Women (N =
43) with stress-related disorders underwent a standardized assessment of
idiographic adverse and traumatic experiences and psychopathology, while
measuring salivary cortisol and, heart rate and blood pressure. RESULTS:
Comparing women with and without childhood sexual abuse revealed lower rates of
responders and distinct levels of salivary cortisol to the interview in
conjunction with a lower heart rate for the abused group. Childhood adversities,
traumatic experiences, and depression contributed to higher hair cortisol levels.
CONCLUSIONS: Our finding of lower response rate and distinct salivary cortisol
pattern in individuals with childhood sexual abuse compared to individuals
without early sexual abuse supports the role of environmental programming for the
HPA axis. Both, childhood adversities and traumatic stress emerge as crucial
factors for long-term cortisol secretion. Lower or suppressed phasic cortisol
responses to trauma-related stimuli may therefore be associated with higher tonic
values. Thus, early exposure to adversities may result in a biological distinct
phenotype in adult patients with stress-related disorders.