洛贝林对慢性神经病理性疼痛的影响
杨宁 伏杰 尹家乐[摘要] 目的 探讨洛贝林对慢性神经病理性疼痛的影响。 方法 采用随机数字表法将48只2月龄的小鼠分为4组,常规喂养。一组为空白对照组,其余三组均制备坐骨神经慢性缩窄性损伤模型(CCI):模型组(CCI+腹腔注射生理盐水),小剂量洛贝林组(CCI+腹腔注射3 mg/kg洛贝林溶液),大剂量洛贝林组(CCI+腹腔注射6 mg/kg洛贝林溶液)。应用Von Fery机械测痛法及旷场实验于造模后第1、8、22天给药后测定小鼠痛阈及活动程度。 结果 痛阈值的测定中,与空白对照组比较,模型组在造模后第1、8、22天均下降(P < 0.05);与模型组比较,三次实验中大剂量洛贝林组均有升高(P < 0.05)。旷场实验中,与空白对照组比较,模型组在第1、22天中总路程和平均速度显著降低(P < 0.01);与模型组比较,大剂量洛贝林组于造模后第22天总路程和平均速度均有显著提高(P < 0.01),活动次数明显提高(P < 0.05)。 结论 6 mg/kg洛贝林溶液能够使慢性神经病理性疼痛小鼠痛阈值升高,并且能够改善小鼠的抑郁样行为。
[关键词] 洛贝林;神经病理性疼痛;抑郁;旷场实验;痛阈
[中图分类号] R741 [文献标识码] A [文章编号] 1673-7210(2018)09(c)-0017-04
[Abstract] Objective To investigate the effects of Lobeline on chronic neuropathic pain. Methods Forty-eight mice aged 2 months were divided into 4 groups by random number table method and fed routinely: one group was blank control group, and chronic constriction injury model of sciatic nerve were prepared in the other three groups; model group (CCI + intraperitoneal injection of saline), low dose Lobeline group (CCI + intraperitoneal injection of 3 mg/kg Lobeline solution), high dose Lobeline group (CCI + intraperitoneal injection of 6 mg/kg Lobeline solution). The pain threshold and activity level of mice were measured by Von Fery mechanical pain measurement and open field test on the 1st ......
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