Abstract:
:Glucocorticoids (GCs) have repeatedly been shown to impair hippocampus-mediated, declarative memory retrieval and prefrontal cortex-based working memory in healthy subjects. However, recent experimental studies indicated that patients with major depressive disorder (MDD) lack these impairing effects. These missing effects have been suggested to result from dysfunctional brain GC receptors. The purpose of the present study was to investigate whether response inhibition, an executive function relying on the integrity of the prefrontal cortex, would be impaired after cortisol administration in patients with MDD. In a placebo-controlled, double blind crossover study, 50 inpatients with MDD and 54 healthy control participants conducted an emotional go/no-go task consisting of human face stimuli (fearful, happy, and neutral) after receiving a dose of 10 mg hydrocortisone and after placebo. GC administration had an enhancing effect on inhibitory performance in healthy control participants, indicated by faster responses, while no GC effect was revealed for the patients group. Moreover, patients showed an overall worse performance than healthy participants. In conclusion, this study further supports the hypothesis of impaired central glucocorticoid receptor function in MDD patients. Regarding the importance of inhibitory functioning for daily living, further studies are needed to examine the impact of glucocorticoids on response inhibition.
journal_name
Psychiatry Resjournal_title
Psychiatry researchauthors
Schlosser N,Wolf OT,Fernando SC,Terfehr K,Otte C,Spitzer C,Beblo T,Driessen M,Löwe B,Wingenfeld Kdoi
10.1016/j.psychres.2012.12.019subject
Has Abstractpub_date
2013-10-30 00:00:00pages
439-46issue
3eissn
0165-1781issn
1872-7123pii
S0165-1781(12)00816-5journal_volume
209pub_type
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