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作 者 ：姚婉霞,周俊俊,闫琳,金少举,蒋袁絮

期 刊 ：中草药 2008年

关键词：氧化槐定碱；维拉帕米；镇痛；一氧化氮；

Keywords:oxysophoridine (OSR), Verapamil ( Ver ), analgesia, nitric oxide (NO),

摘 要 ：目的研究氧化槐定碱（OSR）的镇痛作用及维拉帕米（Vet）对OSR镇痛作用的影响。方法采用小鼠醋酸扭体法,观察OSR的镇痛作用;采用热板法观察CaCl₂和Ver对OSR镇痛作用的影响;采用硝酸还原酶法测定血清NO水平。结果OSR呈剂量依赖性抑制醋酸导致的小鼠扭体反应,延长小鼠舔后足潜伏期;其镇痛作用可被CaCl₂拮抗,被Ver增强;OSR镇痛作用同时未见其对小鼠血清NO水平产生明显的影响。结论OSR有明显镇痛作用,Ver能增强OSR镇痛作用。

Abstract:Objective To investigate the analgesic effect of oxysophoridine(OSR)and the influence of verapamil(Ver)on the antinociception of OSR when two drugs were co-administrated in mice.Methods The number of writhing within 15 min after ip different doses of OSR was observed in painful mouse mo- dels caused by acetic acid.The hot plate method was used to assess nociceptive sensitivity of CaCl₂ and Ver before ip OSR.Nitric oxide(NO)in serum was measured by spectrophotometry.Results The number of writhing was decreased and the latency of licking the hind paws was prolonged in a dose-dependent manner after ip OSR.The antinociception of OSR could be antagonized by CaCl₂ and enhanced by Ver.No inter- ference was detected in serum volume of NO.Conclusion These results suggest that OSR can antagonize the acute pain caused by acetic acid and hot plate in a dose-dependent manner in mice.Calcium channel blocker could enhance the effect of OSR.

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