Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Possible Involvement of Atp-Sensitive Potassium Channels in the Antidepressant-Like Effect of Baclofen in Mouse Forced Swimming Test Publisher Pubmed



Nazari SK1 ; Nikoui V2 ; Ostadhadi S3, 4, 5 ; Chegini ZH1 ; Oryan S1 ; Bakhtiarian A3, 5
Authors
Show Affiliations
Authors Affiliations
  1. 1. Faculty of Biology Sciences, Kharazmi University, Tehran, Iran
  2. 2. Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran

Source: Pharmacological Reports Published:2016


Abstract

Background Previous study confirmed that the acute treatment with baclofen by inhibition of the L-arginine-nitric oxide (NO) pathway diminished the immobility behavior in the forced swimming test (FST) of mice. Considering the involvement of NO in adenosine triphosphate (ATP)-sensitive potassium channels (KATP), in the present study we investigated the involvement of KATP channels in antidepressant-like effect of baclofen in the FST. Methods After assessment of locomotor behavior in the open-field test (OFT), FST was applied for evaluation of the antidepressant-like activity of baclofen in mice. Baclofen at different doses (0.1, 0.3, and 1 mg/kg) and fluoxetine (20 mg/kg) were administrated by intraperitoneal (ip) route, 30 min before the FST or OFT. To clarify the probable involvement of KATP channels, after determination of sub-effective doses of glibenclamide as a KATP channel blocker and cromakalim, as an opener of these channels, they were co-administrated with the sub-effective and effective doses of baclofen, respectively. Results Baclofen at dose 1 mg/kg significantly decreased the immobility behavior of mice similar to fluoxetine (20 mg/kg). Co-administration of gelibenclamide sub-effective dose (1 mg/kg) with baclofen (0.1 mg/kg) showed a synergistic antidepressant-like effect in the FST. Also, sub-effective dose of cromakalim (0.1 mg/kg) inhibited the antidepressant-like effect of baclofen (1 mg/kg) in the FST. All aforementioned treatments had not any impact on the locomotor movement of mice in OFT. Conclusions Our study for the first time revealed that antidepressant-like effect of baclofen on mice is KATP-dependent, and baclofen seems that exert this effect by blocking the KATP channels. © 2016
Experts (# of related papers)
Other Related Docs
36. Development of Resistance to Serotonin-Induced Itch in Bile Duct Ligated Mice, Clinical and Experimental Pharmacology and Physiology (2017)
39. Behavioral Despair Associated With a Mouse Model of Crohn's Disease: Role of Nitric Oxide Pathway, Progress in Neuro-Psychopharmacology and Biological Psychiatry (2016)