Volume 10, Issue 4 (July & August 2019)                   BCN 2019, 10(4): 393-400 | Back to browse issues page


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Meashack Ijomone O, Joachim Biose I. Effects of Dextromethorphan on Depressive- and Cognitive-Associated Behaviors: A Sexually Dimorphic Study. BCN. 2019; 10 (4) :393-400
URL: http://bcn.iums.ac.ir/article-1-1226-en.html
1- Department of Anatomical Sciences, School of Health and Health Technology, Federal University of Technology Akure, Nigeria.; Department of Anatomy and Forensic Anthropology, Faculty of Basic Medical Sciences, Cross River University of Technology, Calabar, Nigeria.
2- Department of Anatomy and Forensic Anthropology, Faculty of Basic Medical Sciences, Cross River University of Technology, Calabar, Nigeria.
Abstract:  
Introduction: We investigated the sexually dimorphic effects of Dextromethorphan (DM) on cognitive and depression-like behaviors as well as on hippocampal histology in rats following acute administration.
Methods: Wistar rats of both sexes were treated with 25 or 50 mg/kg of DM for 7 days via intraperitoneal injection. At the end of the administration, behavioral studies were performed on the Tail Suspension Test (TST) for depressive-like behaviors and the Y-maze for cognitive behaviors. The rats’ brains were excised and processed for routine histological analysis. 
Results: Our results showed that DM significantly increased (P<0.05) immobility time in the TST in male rats but not female ones, and decreased percentage alternation (P<0.001) on the Y-maze in both male and female rats. Histological analysis revealed no morphological changes in the hippocampus following DM treatment. 
Conclusion: DM impairs cognitive functions in both male and female rats without histologic defects in the hippocampus. However, the induced depressive-like behaviors following DM administration may be sexually dependent.
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Type of Study: Original | Subject: Behavioral Neuroscience
Received: 2018/06/4 | Accepted: 2018/09/24 | Published: 2019/07/1

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