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A Chronic Immobilization Stress Protocol for Inducing Depression-Like Behavior in Mice

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Published on: May 15, 2019

Acth and the dexamethasone suppression test in depression.

A K Jainer¹, M Sharma, J K Trivedt

¹Senior Resident, Department of Psychiatry, K.G's Medical College, Lucknow.

Indian Journal of Psychiatry

|July 22, 2011

Summary

Depression may involve abnormal hypothalamic-pituitary-adrenal (HPA) axis function. While cortisol levels are often elevated, research on adrenocorticotropic hormone (ACTH) in depression remains controversial, with conflicting findings on its levels.

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Area of Science:

Neuroendocrinology
Psychiatry
HPA Axis Research

Background:

Hypercortisolemia, indicated by serum cortisol and dexamethasone suppression test (DST) results, is linked to abnormal hypothalamic-pituitary-adrenal (HPA) axis function in depression.
The role of adrenocorticotropic hormone (ACTH) in depression is debated, with inconsistent findings across studies.

Purpose of the Study:

To investigate the consistency of adrenocorticotropic hormone (ACTH) abnormalities in patients experiencing depression.
To reconcile conflicting research findings regarding ACTH levels in individuals with depression.

Main Methods:

Review of existing literature on HPA axis function in depression.
Comparison of studies measuring baseline serum cortisol levels and DST responses.
Analysis of studies reporting plasma ACTH levels in depressed patients versus control groups.

Main Results:

Elevated baseline serum cortisol and abnormal DST responses are commonly associated with depression.
Studies report conflicting results regarding plasma ACTH levels in depressed patients, with some showing higher levels and others finding no significant difference compared to controls.

Conclusions:

While HPA axis dysregulation is recognized in depression, particularly concerning cortisol, the specific role and consistent measurement of ACTH remain unclear.
Further research is needed to definitively establish the pattern of ACTH levels in depression and its clinical significance.