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Updated: Jun 5, 2025

The Forced Swim Test as a Model of Depressive-like Behavior
Published on: March 2, 2015
Evaluation Of Antidepressant Activity Of Statins Alone And In Combination With Fluoxetine In Acute And Chronic
Dipesh V Sonawane1, Anup U Petare2, Raakhi K Tripathi2
1Abbott India Ltd.
Statins like atorvastatin and simvastatin do not treat depression alone but can enhance antidepressant effects when combined with fluoxetine. This combination may allow for lower fluoxetine doses, potentially reducing side effects.
Area of Science:
- Pharmacology
- Neuroscience
- Drug Discovery
Background:
- Investigating statins (Atorvastatin, Simvastatin, Pravastatin) as potential pharmacological treatments for depression.
- Exploring the role of HMG-CoA reductase inhibitors in managing depressive disorders.
Purpose of the Study:
- To evaluate the antidepressant activity of statins, alone and in combination with Fluoxetine.
- To assess the effects in acute and chronic forced swim tests in a rat model.
Main Methods:
- Experimental animal study using male albino wistar rats.
- Dose-finding for statins in acute forced swim test.
- Evaluation of statins and Fluoxetine (SSRI) alone and in combination.
- Open field test to rule out general behavioral stimulation.
Main Results:
- Statins alone did not significantly reduce immobility time in acute or chronic tests.
- Atorvastatin and Simvastatin significantly reduced immobility when combined with Fluoxetine in acute tests.
- Atorvastatin and Simvastatin potentiated Fluoxetine's antidepressant action in chronic tests; Pravastatin did not.
Conclusions:
- Statins lack independent antidepressant activity but show synergistic effects with SSRIs like Fluoxetine.
- Atorvastatin and Simvastatin may enable reduced Fluoxetine dosage, potentially mitigating adverse effects.
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