Effects of a metabotropic glutamate receptor 5 positive allosteric modulator, CDPPB, on spatial learning in rodents
No Thumbnail Available
Authors
Meeting name
Sponsors
Date
Journal Title
Format
Thesis
Abstract
Metabotropic glutamate receptor 5 (mGlu5) has been implicated in a variety of learning processes and is important for aversive learning tasks. The present studies used an mGlu5 receptor positive allosteric modulator, 2-cyano-N-(1,3 diphenyl-1H-hyrazol-5-yl)benzamide (CDPPB) to characterize the importance of mGlu5 receptors in aversively- and appetitively-motivated spatial learning. CDPPB, administered prior to 5 daily training sessions in the Barnes maze (Experiment 1) did not significantly enhance acquisition of the task. However, in a second experiment CDPPB (30 mg/kg) significantly enhanced performance compared to vehicle-treated controls during 3 days of reversal learning and had a significant effect on proportion search strategy used. Additionally, CDPPB (30 mg/kg), delivered 20 min prior to 5 daily training sessions (of Experiment 3) enhanced the delay rats were able to withstand in the appetitively-motivated delayed alternation version of the T-maze. The present results emphasize the role of mGlu5 receptors in spatial learning tasks, and demonstrate mGlu5 receptors are important for learning in appetitive, as well as aversive, tasks.
Table of Contents
DOI
PubMed ID
Degree
Ph. D.
Thesis Department
Rights
OpenAccess.
License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.