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中国临床药理学与治疗学 ›› 2018, Vol. 23 ›› Issue (4): 400-405.doi: 10.12092/j.issn.1009-2501.2018.04.007

• 基础研究 • 上一篇    下一篇

罗哌卡因腰丛阻滞治疗大鼠后肢慢性缺血疼痛

范毅敏1,王黎敏1,郭晓姝2,冯改壮1,李秀萍1   

  1. 1 机能综合实验室,长治医学院,长治 046000,山西;2 生理教研室,长治医学院,长治 046000,山西
  • 收稿日期:2017-09-14 修回日期:2017-10-19 出版日期:2018-04-26 发布日期:2018-04-13
  • 通讯作者: 郭晓姝,女,硕士研究生,副教授,研究方向:麻醉生理,创伤应激机制与损伤修复。 Tel: 0355-3151441 E-mail:guoxiaoshu999@163.com
  • 作者简介:范毅敏,女,本科,实验师,研究方向:实验动物模型制备。 Tel: 0355-3151451 E-mail:binbinf1972@126.com
  • 基金资助:

    创伤、烧伤与复合伤国家重点实验室开放课题(SKLKF201321);山西省高等学校大学生创新创业训练项目(2016312)

Lumbar plexus block with Ropivacaine for hind limbs pain of chronic ischemia in rats

FAN Yimin1, WANG Limin1, GUO Xiaoshu2, FENG Gaizhuang1, LI Xiuping1   

  1. 1 Comprehensive laboratory of Function, Changzhi Medical College, Changzhi 046000, Shanxi, China; 2 Department of Physiology, Changzhi Medical College, Changzhi 046000, Shanxi, China
  • Received:2017-09-14 Revised:2017-10-19 Online:2018-04-26 Published:2018-04-13

摘要:

目的:观察罗哌卡因进行腰丛阻滞治疗大鼠后肢慢性缺血后疼痛效果。方法:分离正常SD大鼠腰神经丛,引导腰神经放电,观察0.025%、0.05%、0.075%、0.1%和0.125%不同浓度罗哌卡因对神经放电的影响,确定最佳阻滞浓度;39只健康成年SD大鼠随机分为3组(每组13只):正常组、缺血组、缺血+阻滞组。利用单侧股动脉套管的方法制备大鼠后肢慢性骨骼肌缺血模型,腰丛阻滞,热板法测定大鼠痛阈,ELISA法观察缺血后1周,各组外周血组胺、P物质的表达;腓肠肌石蜡切片,HE染色进行形态学观察。 结果:罗哌卡因最佳阻滞浓度为0.075%;大鼠痛阈组间比较,除正常组与缺血+阻滞组组间比较无统计学差异外,其余组间比较差异均有统计学意义(P<0.05),缺血+阻滞组较缺血组痛阈显著提高;大鼠血清组胺、P物质组间比较差异均有统计学意义(P<0.05),缺血+阻滞组较缺血组显著降低。结论:罗哌卡因腰丛神经阻滞能有效治疗大鼠慢性缺血后疼痛。

关键词: 罗哌卡因, 腰丛阻滞, 慢性缺血后疼痛

Abstract:

AIM: To observe the Ropivacaine treatment with lumbar plexus block rat hind limbs pain of chronic ischemia.   METHODS: Lumbar plexus of Normal SD rats were separated to induce neural discharge. Effects of different concentrations of Ropivacaine (0.025%, 0.05%, 0.075%, 0.1% and 0.125%) on neural discharges were then observed to determine the best concentration. A total of 39 healthy SD healthy adult rats were randomly divided into the normal group, ischemic group and ischemia+block group(n=13). Chronic skeletal muscle ischemia model were prepared with unilateral femoral artery cannula, block lumbar plexus. One week after ischemia, histamine and substance P of the rat peripheral blood were observed by ELISA, pain threshold was determined by hot plate method, gastrocnemius was observed in paraffin section through HE staining. RESULTS: 0.075% Ropivacaine was the best block concentration. The rat pain threshold was significant different between groups (P<0.05) except normal group vs. ischemia +block group; pain threshold of the ischemia+block group increased more significantly than the ischemia group. The rat serum histamine, substance P were significant different between groups (P<0.05); histamine and substance P of the ischemia+block group decreased more significantly than the ischemia group. CONCLUSION: Lumbar plexus block with Ropivacaine treatment can effectively alleviate ischemia pain in rats.

Key words: ropivacaine, lumbar plexus block, pain of chronic ischemia

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