首页> 外文期刊>Life sciences >ANTINOCICEPTIVE ACTION OF MITRAGYNINE IN MICE - EVIDENCE FOR THE INVOLVEMENT OF SUPRASPINAL OPIOID RECEPTORS
【24h】

ANTINOCICEPTIVE ACTION OF MITRAGYNINE IN MICE - EVIDENCE FOR THE INVOLVEMENT OF SUPRASPINAL OPIOID RECEPTORS

机译:三精胺对小鼠的止痛作用-脊髓上皮阿片受体参与的证据。

获取原文
获取原文并翻译 | 示例
           

摘要

Mitragynine is a major alkaloidal constituent extracted from the young leaves of Mitragyna speciosa Korth. (Rubiaceae). We investigated an antinociceptive activity of intraperitoneal (i.p.) and intracerebroventricular (i.c.v.) injection of this alkaloid by the tail-pinch and hot-plate tests in mice, and evaluated the mechanisms of the action using naloxone, an opioid receptor antagonist. Mitragynine (5.0-30 mg/kg, i.p. and 1.0-10 mu g/mouse, i.c.v.) exerted a dose-dependent antinociceptive activity which was maximal at 15-45 min after injection in the tail-pinch and hot-plate tests, but it did not induce a morphine-like behavioral change. The antinociceptive actions of i.p. mitragynine were completely abolished by both s.c. (2 mg/kg) and i.c.v (10 mg/mouse) naloxone. The action of i.c.v. mitragynine (10 mu g/mouse) was also antagonized by i.c.v. naloxone (10 mu g/mouse). These results indicate that mitragynine itself can induce antinociception by acting in the brain, and that the supraspinal opioid systems are at least partly involved in the antinociceptive action of mitragynine in mice. [References: 12]
机译:Mitragynine是从Mitragyna speciosa Korth的幼叶中提取的主要生物碱成分。 (菊科)。我们通过小鼠的尾捏和热板试验研究了这种生物碱的腹膜内(i.p.)和脑室内(i.c.v.)注射的抗伤害感受活性,并评估了使用阿片样物质受体拮抗剂纳洛酮的作用机制。 Mitragynine(5.0-30 mg / kg,腹腔注射和1.0-10μg/小鼠,icv)表现出剂量依赖性的抗伤害感受活性,在尾捏和热板试验中注射后15-45分钟最大,但它没有引起类似吗啡的行为改变。 i.p.的镇痛作用南卡罗来纳州和南卡罗来纳州都完全废除了米塔吉宁。 (2 mg / kg)和i.c.v(10 mg /小鼠)纳洛酮。 i.c.v.的诉讼I.c.v.也拮抗了米格炔宁(10微克/小鼠)。纳洛酮(10μg /小鼠)。这些结果表明,mitragynine本身可以通过作用于大脑来诱导抗伤害感受,而脊髓上阿片样物质系统至少部分参与了mitragynine对小鼠的伤害感受作用。 [参考:12]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号