Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Σάββατο 8 Σεπτεμβρίου 2018

Role of Endocannabinoid System in the Peripheral Antinociceptive Action of Aripiprazole

BACKGROUND: Recently, we demonstrated that the antipsychotic dopaminergic and serotoninergic agonist aripiprazole induced peripheral antinociception. However, the mechanism underlying this effect has not been fully established. Here, our aim was to identify possible relationships between this action of aripiprazole and the endocannabinoid system. METHODS: All drugs were given locally into the right hind paw of male Swiss mice weighing 30–35 g in a volume of 20 µL. The hyperalgesia was induced by intraplantar injection of prostaglandin E2 (2 μg). Aripiprazole was injected 10 minutes before the measurement, and an irreversible inhibitor of anandamide hydrolase (MAFP), an inhibitor for monoacylglycerol lipase (JZL184), and an anandamide reuptake inhibitor (VDM11) were given 10 minutes before the aripiprazole. Nociceptive thresholds were measured using an algesimetric apparatus in the third hour after prostaglandin E2 injection. Data were analyzed by ANOVA and Bonferroni tests. RESULTS: The antinociceptive effect induced by aripiprazole (100 μg) was blocked by cannabinoid 1 or 2 receptor antagonists AM251 (40 μg [P

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