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Delta sleep inducing peptide response to human corticotropin releasing hormone chr in major depressive disorder comparison with crh induced corticotropin and cortisol secretion

Delta sleep inducing peptide response to human corticotropin releasing hormone chr in major depressive disorder comparison with crh induced corticotropin and cortisol secretion

Biological Psychiatry 24(2): 162-172

Twenty-four subjects (12 patients with major depressive disorder and 12 controls matched for sex and age) received 100 .mu.g synthetic human corticotropin-releasing hormone (hCRH) as an iv bolus dose. Healthy subjects exhibited a slight, but sustained, increase of plasma delta sleep-inducing peptide (DSIP) concentrations, whereas a marked reduction of DSIP levels was found in depressives. Compared to controls, depressed patients showed a significant attenuation of corticotropin (ACTH) responses, whereas cortisol secretion in response to hCRH was normal. Basal DSIP and cortisol concentrations were highly correlated and were higher in depressives than in controls. Both were negatively correlated with the DSIP responses to hCRH. These findings are compatible with the hypothesis that hypothalamic-pituitary-adrenal (HPA) overactivity in the depressive state is primarily due to central hypersecretion of CRH and support the view of a modulatory function of DSIP in the complex regulatory mechanism of the HPA system and of its pathophysiological significance for aberrant HPA axis function in major depressive disorder.

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Accession: 005102336

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PMID: 2839244

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