The Effects of Childhood Trauma on Increased Cortisol Levels in Patients with Glucocorticoid Resistance

Research Paper Title

Childhood Trauma, HPA Axis Activity and Antidepressant Response in Patients with Depression.

Background

Childhood trauma is among the most potent contributing risk factors for depression and is associated with poor treatment response.

Hypothalamic-pituitary-adrenal (HPA) axis abnormalities have been linked to both childhood trauma and depression, but the underlying mechanisms are poorly understood.

The present study aimed to investigate the link between childhood trauma, HPA axis activity and antidepressant response in patients with depression.

Methods

As part of the Wellcome Trust NIMA consortium, 163 depressed patients and 55 healthy volunteers were included in this study.

Adult patients meeting Structured Clinical Interview for Diagnostic and Statistical Manual Version-5 criteria for major depression were categorised into subgroups of treatment responder (n=42), treatment non-responder (n=80) and untreated depressed (n=41) based on current depressive symptom severity measured by the 17-item Hamilton Rating Scale for Depression and exposure to antidepressant medications established by Antidepressant Treatment Response Questionnaire. Childhood Trauma Questionnaire was obtained.

Baseline serum C-reactive protein was measured using turbidimetric detection. Salivary cortisol was analysed at multiple time points during the day using the ELISA technique. Glucocorticoid resistance was defined as the coexistence of hypercortisolemia and inflammation.

Results

The results show that treatment non-responder patients had higher exposure to childhood trauma than responders.

No specific HPA axis abnormalities were found in treatment non-responder depressed patients.

Untreated depressed showed increased diurnal cortisol levels compared with patients on antidepressant medication, and higher prevalence of glucocorticoid resistance than medicated patients and controls.

The severity of childhood trauma was associated with increased diurnal cortisol levels only in individuals with glucocorticoid resistance.

Conclusions

The researchers argue their findings suggest that the severity of childhood trauma experience contributes to a lack of response to antidepressant treatment.

The effects of childhood trauma on increased cortisol levels are specifically evident in patients with glucocorticoid resistance and suggest glucocorticoid resistance as a target for the development of personalised treatment for a subgroup of depressed patients with a history of childhood trauma rather than for all patients with resistance to antidepressant treatment.

Reference

Nikkheslat, N., McLaughlin, A.P., Hastings, C., Zajkowska, Z., Nettis, M.A., Mariani, N., Enache, D., Lombardo, G., Pointon, L., Cowen, P.J., Cavanagh, J., Harrison, N.A., Bullmore, E.T., Pariante, C.M., Mondelli, V. & NIMA Consortium. (2019) Childhood Trauma, HPA Axis Activity and Antidepressant Response in Patients with Depression. Brain, Behavior, and Immunity. pii: S0889-1591(19)30702-0. doi: 10.1016/j.bbi.2019.11.024. [Epub ahead of print].

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.