Mendeley  

Zotero  

Haghparast A, Zarringhalam J, Khatibi A, Dianati E, Shams J. The Fruit Essential oil of Cuminum cyminum L. Reduced the Acquisition but not Expression of Ineffective dose of Morphine-Induced Conditioned Place Preference in Morphine- Sensitized Mice. J. Med. Plants 2009; 8 (31) :64-74
URL: http://jmp.ir/article-1-332-en.html

Background: Cuminum cyminum fruit essential oil (FEO) dose-dependently can attenuate the expression of morphine tolerance and dependence in morphine-dependent mice. Objective: In this study, the effects of Cuminum cyminum FEO on acquisition and expression of morphine-induced conditioned place preference (CPP) in morphine-sensitized mice were studied. Methods: Repeated subcutaneous (s.c.) administration of morphine (5 mg/kg), once daily for three and 5 days free of the opioid (sensitization period), increased conditioning response induced by ineffective doses of morphine (0.25, 0.5 and 0.75 mg/kg). Results: The results showed that intra-peritoneal (i.p.) injection of Cumin FEO (0.001, 0.01, 0.1, 0.5, 1 and 2% 5 ml/kg) or Tween-80 (0.5% 5 ml/kg), 60 min before administration of morphine or saline during sensitization period (acquisition), decreased the conditioning response induced by ineffective dose of morphine (0.5 mg/kg s.c.) at the doses of 1% (P<0.05) and 2% (P<0.001) while Cumin FEO (0.001-2% i.p.), just 60 min before the test on post-conditioning phase (expression experiments), did not alter the conditioning scores in morphine- and non-sensitized mice. Conclusion: Our findings showed that the Cuminum cyminum fruit essential oil reduces the acquisition but not expression of morphine-induced conditioned place preference in morphine-sensitized mice.