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Involvement of Ppar Receptors in the Anticonvulsant Effects of a Cannabinoid Agonist, Win 55,212-2 Publisher Pubmed



Payandemehr B1, 2 ; Ebrahimi A1, 2 ; Gholizadeh R1 ; Rahimian R1 ; Varastehmoradi B1 ; Gooshe M1 ; Aghaei HN3 ; Mousavizadeh K4 ; Dehpour AR1
Authors
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Authors Affiliations
  1. 1. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Physiology Research Center and Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran

Source: Progress in Neuro-Psychopharmacology and Biological Psychiatry Published:2015


Abstract

Cannabinoid and PPAR receptors show well established interactions in a set of physiological effects. Regarding the seizure-modulating properties of both classes of receptors, the present study aimed to evaluate the roles of the PPAR-gamma, PPAR-alpha and CB1 receptors on the anticonvulsant effects of WIN 55,212-2 (WIN, a non selective cannabinoid agonist).The clonic seizure thresholds after intravenous administration of pentylenetetrazole (PTZ) were assessed in mice weighing 23-30. g.WIN increased the seizure threshold dose dependently. Pretreatment with pioglitazone, as a PPARγ agonist, potentiated the anticonvulsant effects of WIN, while PPARγ antagonist inhibited these anticonvulsant effects partially. On the other hand PPARα antagonist reduced the anticonvulsant effects of WIN significantly. Finally the combination of CB1 antagonist and PPARα antagonist could completely block the anticonvulsant properties of WIN.Taken together, these results show for the first time that a functional interaction exists between cannabinoid and PPAR receptors in the modulation of seizure susceptibility. © 2014.