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Related Concept Videos

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Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
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Related Experiment Video

Updated: May 23, 2026

An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
06:55

An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents

Published on: December 2, 2015

Cushing’s disease and melancholia.

R M Condren1, J H Thakore

  • 1St. Vincent’s Hospital, Richmond Rd., Fairview, Dublin 3, Ireland. jthakore@indigo.ie

Stress (Amsterdam, Netherlands)
|March 21, 2012
PubMed
Summary

Cushing's disease and melancholic depression share similar hormonal abnormalities and physical complications, often due to excessive glucocorticoids. Differentiating these conditions requires specific endocrine tests.

Area of Science:

  • Endocrinology
  • Psychiatry
  • Internal Medicine

Background:

  • Cushing's disease and melancholic depression exhibit striking endocrinological similarities.
  • Both conditions can present with hypercortisolism, making differentiation challenging and leading to a

Purpose of the Study:

  • To explore the endocrinological and physical similarities between Cushing's disease and melancholic depression.
  • To highlight the diagnostic challenges and potential differentiating factors using dynamic endocrine tests.

Main Methods:

  • Comparative analysis of laboratory abnormalities, including cortisol and adrenocorticotrophin (ACTH) levels.
  • Review of dynamic endocrine tests such as the dexamethasone suppression test, dexamethasone-CRH test, and synacthen response.
  • Examination of shared physical complications like osteoporosis and cardiovascular risks.

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Last Updated: May 23, 2026

An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
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Main Results:

  • Both disorders show elevated urinary, plasma, and salivary cortisol, non-suppression in dexamethasone tests, and ACTH hypersecretion.
  • Cerebrospinal fluid corticotrophin-releasing hormone (CRH) is lower in Cushing's disease than depression.
  • Depression shows a reduced ACTH response to CRH, unlike Cushing's disease.

Conclusions:

  • Excessive plasma glucocorticoids are proposed as the common underlying factor for shared physical complications.
  • Early detection and treatment of depression are crucial due to its associated morbidity and mortality.
  • Screening for physical complications in patients with depression is necessary.