Peripheral Immune Regulation of Depression: Within Sight but Beyond Reach?

Area of Science:

• Neuroscience
• Immunology
• Psychiatry

Background:

• Growing interest in immune responses in depression research.
• Limited success of peripheral immune regulation studies in clinical depression.
• Need to explore translational potential of immune regulation for depression.

Purpose of the Study:

• To review peripheral immune regulation in depression.
• To propose an "peripheral-central immune interactome" framework.
• To identify immune dysregulation's role in stress susceptibility and treatment-resistant depression.

Main Methods:

• Literature review of peripheral-central immune interactions in stress.
• Analysis of peripheral immune changes in depression patients.
• Evaluation of clinical trial data on immunomodulation for depression.

Main Results:

• Peripheral-central immune inflammation is key in stress susceptibility.
• Peripheral immune factors in depression can inform diagnostic/prognostic kits.
• Immunomodulation shows promise as an adjunctive therapy for depression.

Conclusions:

• Immune dysregulation is a contributory factor in stress susceptibility and treatment-resistant depression.
• The proposed "peripheral-central immune interactome" framework integrates immune roles.
• Further research into peripheral immune regulation is warranted for depression treatment.