Mir Hadi Khayyat Nori; Seyyedeh Zahra Mosavi; Saeed Abbasi Maleki; Farid Abbasi Maleki; Ghader Najafi
Volume 20, Issue 4 , January and February 2014, , Pages 408-415
Abstract
Background and Purpose: It showed that antidepressants may reduce the abuse potential of opioid. In other hand, studies showed avena sativa has antidepressant and sedative properties. So the aim of this study was to investigate the effect of ethanolic extract of Avena sativa on morphine withdrawal signs ...
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Background and Purpose: It showed that antidepressants may reduce the abuse potential of opioid. In other hand, studies showed avena sativa has antidepressant and sedative properties. So the aim of this study was to investigate the effect of ethanolic extract of Avena sativa on morphine withdrawal signs in male mice.
Material and Methods: In this experimental study forty male NMRI mice (20-30 g) were randomly divided into 5 groups of 8: control groups received morphine and normal saline (10ml/kg) and other groups received ethanol (3%) and different doses of ethanolic extract of Avena sativa (50,100 and 200mg/kg).Morphine dependency was induced using a four- day schedule method with 50, 50, 75 and 50 mg/kg dosing respectively. In fourth day 2 hours after single dose of morphine, naloxone was injected (5 mg /kg) and withdrawal signs were recorded with number of jumping and diarrhea, grooming, wet dog shake, teeth chattering, writing, climbing as scores of 0 to 3 during 30min.The data were expressed with one-way ANOVA for quantities and Mann-Whitney U test for qualities data’s and they were analyzed with SPSS 15 and P values less than 0.05 were considered significant.
Results: The present study findings showed that all doses of ethanolic extract of Avena sativa compared to control group, significantly and dose- dependently decrease the number of jumping in morphine dependent mice (56.12±6.46, 40.0±5.33 and 31.5±2.5 respectively)) P
Ghader Najafi; Saeed Abbasi Maleki; Seyyed Kamel Eftekhari
Volume 19, Issue 2 , May and June 2012, , Pages 164-172
Abstract
Background and purpose: Dopaminergic and glutamatergic systems play a critical role in expression of morphine-induced place conditioning, while vitamin C, released from glutamatergic neurons, modulates the synaptic action of dopamine and glutamate. This study investigated the effect of vitamin C on expression ...
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Background and purpose: Dopaminergic and glutamatergic systems play a critical role in expression of morphine-induced place conditioning, while vitamin C, released from glutamatergic neurons, modulates the synaptic action of dopamine and glutamate. This study investigated the effect of vitamin C on expression of morphine-induced place conditioning in male mice. Materials and methods: In this experimental study, 96 male NMRI mice (20-30g) were randomly divided into 12 groups of 8: control groups received normal saline (10 ml/kg) and treatment groups received morphine (2.5, 5, and 10 mg/kg) and vitamin C (1, 5, and 30 mg/kg) alone and with morphine. The study took place on six consecutive days, consisting of three phases: preconditioning, conditioning, and postconditioning. In the first set, vitamin C alone were administered in conditioning and postconditioning phases to see if they induced conditioned place preference (CPP) or aversion (CPA). In the second set, mice received vitamin C in postconditioning phase after conditioning with morphine. Results: Different doses of morphine (5 and 10 mg/kg, p