Antinociceptive Activity of Methanolic Extract of Clinacanthus nutans Leaves: Possible Mechanisms of Action Involved
Effect of opioid receptor antagonists on MECN-induced antinociception in the acetic acid-induced abdominal constriction test in mice. β-funaltrexamine (β-FNA; 10 mg/kg, i.p.), naltrindole (NALT; 1 mg/kg, i.p.), or nor-binaltorphimine (nor-BNI; 1 mg/kg, i.p.) were administered 90 min, 15 min, and 30 min, respectively, before oral administration of vehicle (10 mL/kg) or MECN (500 mg/kg). Each column represents the mean ± SEM of six mice. Statistical analyses were performed using 1-way ANOVA followed by Dunnett’s post hoc test. and compared to control group. ### compared to 500 mg/kg MECN-treated group.
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