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The Role of Ca3 Gabaa Receptors on Anxiolytic-Like Behaviors and Avoidance Memory Deficit Induced by Nmda Receptor Antagonists Publisher Pubmed



Zarrabian S1 ; Farahizadeh M1 ; Nasehi M2 ; Zarrindast MR1, 3, 4, 5
Authors
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Authors Affiliations
  1. 1. Institute for Cognitive Science Studies (ICSS), Tehran, Iran
  2. 2. Cognitive and Neuroscience Research Center (CNRC), Islamic Azad University, Tehran Medical Sciences Branch, P.O. Box 13145-784, Tehran, Iran
  3. 3. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran
  4. 4. Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran

Source: Journal of Psychopharmacology Published:2016


Abstract

Cognitive functions are influenced by memory and anxiety states. However, a non-linear relation has been shown between these two domains. The important role of the hippocampus in memory and emotional responses may link the pathogenesis of anxiety to memory-related GABAergic and glutamatergic processes in the hippocampus. To investigate the role of GABAA receptors in relation to blocking N-methyl-D-aspartate (NMDA) receptors in the CA3 region, and balancing the glutamatergic and GABAergic system activities as an approach for the management of related disorders, the elevated plus-maze test-retest paradigm was used to investigate the anxiolytic-like state on the test day and avoidance memory state on the retest day. The data showed that injection of D-AP5, the NMDA receptor antagonist, induced anxiolytic-like behavior and impaired avoidance memory. Injection of GABAA agonist (muscimol), but not the antagonist (bicuculline), induced avoidance memory impairment. Neither muscimol nor bicuculline altered anxiety-like behaviors. Muscimol pretreatment did not change D-AP5-induced anxiolytic-like behaviors but potentiated avoidance memory impairment. Bicuculline pretreatment blocked D-AP5-induced anxiolytic-like behaviors and contradicted its effect on avoidance memory. Our findings indicate that alteration of the CA3 GABAA receptor activity can effectively affect the anxiolytic-like behaviors and avoidance memory deficit induced by D-AP5. © The Author(s) 2015.
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