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Antidepressant therapy and C-reactive protein levels
Sinead M O'Brien1, Lucinda V Scott, Timothy G Dinan
1Department of Psychiatry and Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.
Summary
Selective serotonin reuptake inhibitor (SSRI) treatment for major depression significantly reduces C-reactive protein levels. This anti-inflammatory effect appears independent of the antidepressant action itself.
Area of Science:
- Neuroscience
- Psychiatry
- Immunology
Background:
- Major depressive disorder is linked to heightened inflammatory responses.
- C-reactive protein (CRP) is a key marker of inflammation.
Purpose of the Study:
- To investigate C-reactive protein levels in patients with major depression.
- To assess the impact of selective serotonin reuptake inhibitor (SSRI) therapy on CRP levels.
Main Methods:
- Study 1: Compared CRP levels in SSRI-treated patients (depressed/euthymic) with healthy controls.
- Study 2: Measured CRP levels in depressed patients before and after SSRI treatment.
Main Results:
- No significant difference in CRP levels between SSRI-treated patients and healthy controls in Study 1.
- A significant reduction in CRP levels was observed after SSRI treatment in Study 2.
Conclusions:
- SSRI treatment leads to a significant decrease in C-reactive protein concentrations in major depression.
- Antidepressants may exert an anti-inflammatory effect independent of their mood-improving action.