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《芍药甘草汤有效组分对慢性坐骨神经结扎大鼠机械痛敏和.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第30卷第7期中华中医药学刊Vol.30No.72012年7月CHINESEARCHIVESOFTRADITIONALCHINESEMEDICINEJul.2012芍药甘草汤有效组分对慢性坐骨神经结扎大鼠机械痛敏和热痛敏的影响1112张娟,郑晖,郭小文,王海娜(1.浙江省中医院,浙江杭州310006;2.浙江中医药大学,浙江杭州310053)摘要:目的:观察芍药甘草汤有效组分(SGM)对慢性压迫性损伤(CCI)大鼠机械痛敏和热痛敏的影响,并研究SGM的给药时机和是否有超前镇痛作用。方法:所有大鼠用机械缩足反射阈值(MWT)和热缩足潜伏期(T
2、WL)来分别评价大鼠机械痛敏和热痛敏。SD大鼠随机分为9组,即假手术组、CCI组和空白组,BN组和BS组,于术前7天开始灌胃给予0.9%生理盐水或SGM120mg/kg,每天2次,直至手术当天结束;AN组、AS组为后给药组,于术后第1天给予直至术后第7天;BAN组和BAS组术前7天前开始直至术后第7天。各组分别在术前、术后1、3、7天分别测定MWT和TWL。结果:和空白组和假手术组相比,CCI组术后MWT及TWL明显下降(P<0.01)。BS、AS和BAS组与各生理盐水组相比,MWT和TWL在术后1、3和7天均明显增加(P<0.01)。BS
3、组和AS组相比,术后第1天的MWT和TWL均明显增加(P<0.01),但到术后第7天,AS组的MWT和TWL均高于BS组(P<0.01),BAS组和AS组相比,术后第1天的MWT和TWL均明显增加(P<0.01),但到术后第7天,两者无明显差异。结论:CCI大鼠从术后1天形成稳定的机械痛敏和热痛敏,SGM能抑制CCI大鼠的机械痛敏和热痛敏作用,术前给予SGM对NP有超前镇痛作用,镇痛作用并能持续数天。和术后用药相比,术前后给药组镇痛作用出现更快。关键词:芍药;甘草;神经病理性疼痛;超前镇痛中图分类号:R285.5文献标识码:A文章编号:16
4、73-7717(2012)07-1602-03InfluenceofShaoyaoGancaoDecoctionEffectiveIngredientsonMechanicaLallodyniaandHeatHyperalgesiaInducedbyChronicConstrictionInjuryoftheSciaticNerveinRats1112ZHANGJuan,ZHENGHui,GUOXiao-wen,WangHai-na(1.TraditionalChineseMedicineHospitalofZhejiangprovince
5、,Hangzhou310006,Zhejiang,China;2.ZhejiangChineseMedicalUniversity,Hangzhou310006,Zhejiang,China)Abstract:Objective:ToobservetheeffectandthepreemptiveanalgesiaoftheextractsofShaoyaoGancaoDecoction(SGM)onmechanicalallodyniaandheathyperalgesiainducedbychronicconstrictioninjur
6、y(CCI)ofthesciaticnerveinrats.Methods:Ratsweredividedintoninegroups.Mechanicalallodyniaandheathyperalgesiawereevaluatedbymechan-icalwithdrawalthreshold(MWT)andthermalwithdrawallatency(TWL)respectively.Inapreemptivetreatmentgroups(BNandBSgroups),normalsaline(2μL)andSGM(120m
7、g/kg)wereorallyadministeredon7thdaybeforesurgery;post-operativetreatmentgroups(ANandASgroups)wereadministeredon7thdayaftersurgery,pre-postoperativetreatmentgroups(BANandBASgroups)wereadministeredon7thdaybeforesurgeryto7thdayaftersurgery.Allgroupsweread-ministeredtwiceaday.
8、TheTWLandMWTweremeasuredbeforesurgeryandon1st,3rdand7thdayaftersurgery.Re-sults:PWLandPWT
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