Volume 9, Issue 3 (2023)                   Pharm Biomed Res 2023, 9(3): 223-230 | Back to browse issues page


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Mesripour A, Pezeshki S. Minocycline Prevents Depression-like Behavior After Co-administration With Dexamethasone or Cyclosporine-A in Mice. Pharm Biomed Res 2023; 9 (3) :223-230
URL: http://pbr.mazums.ac.ir/article-1-518-en.html
1- Department of Pharmacology and Toxicology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
2- Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
Abstract:   (384 Views)
Background: In animal studies, minocycline (Mcy) has been proven to have antidepressant effects. In addition to modulating peripheral and central pro-inflammatory pathways, Mcy may regulate the hypothalamic-pituitary-adrenal (HPA) axis and the mechanistic target of rapamycin (mTOR) signaling pathway. This study aims to evaluate the antidepressant-like effect of Mcy in mice following injection of dexamethasone (Dex) or cyclosporine-A (CsA). 
Methods: Male NMRI mice were randomly divided into eight groups of 6, including control, Dex 0.25 mg/kg, CsA 20 mg/kg, Mcy 40 mg/kg, Dex+Mcy, Dex+fluoxetine 20 mg/kg, CsA+Mcy, and CsA+fluoxetine. All drugs were injected intraperitoneally (except for Dex, which was subcutaneous injection) once daily for 3 days. The locomotor activity, forced swimming test (FST), and sucrose preference (SP) test were performed on day 4. 
Results: Mcy alone reduced immobility time in the FST (27.0±6.4 s) compared to the control group (104±3.9 s) (P<0.001). After the co-administration of Mcy and Dex, the immobility time significantly decreased (79.5±6.5 s) compared to the Dex group (P<0.001). It also decreased following the co-administration of Mcy and CsA (67.5±20.8 s) compared to the CsA group (P<0.001). Results were similar in the groups treated with fluoxetine plus Dex or CsA. Significant differences were not observed in the locomotor activity test. 
Conclusion: Mcy prevents depression-like behavior in mice during the FST when it is co-administrated with CsA or Dex. The possibility of the positive effect of Mcy on the HPA axis and the mTOR signaling pathway should be examined in further studies.
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Type of Study: Original Research | Subject: Pharmacology

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