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时间:2020-06-04
《高频电刺激下丘脑后核对氟哌啶醇致大鼠运动不能的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、ProgressinModernBiome~cmeVoL14NO.9MAR.2014·1633·doi:10.13241~.cnki.pmb.2014.09.007高频电刺激下丘脑后核对氟哌啶醇致大鼠运动不能的影响木曹屹东贾栋△衡立君李维新(第四军医大学唐都医院神经外科陕西西安710038)摘要目的:利用氟哌啶醇致僵直大鼠模拟帕金森病(PD)的运动不能,通过高频电刺激下丘脑后核(PH),观察大鼠僵直和运动能力的变化,从而探讨PH在PD治疗中潜在的应用价值。方法:将成年雄性SD大鼠随机分为PH刺激组、假刺激组和对照组,对PH刺激组和假刺激组大鼠双侧PH置入双极刺激
2、电极,腹腔注射氟哌啶醇30min后,PH刺激组给予持续高频电刺激(130Hz,60s,100IxA),分别利用爬杆实验和跑步机实验评价大鼠僵直程度和运动能力。结果:腹腔注射氟哌啶醇1.0mg,kg后,①大鼠呈僵直状态,其潜伏期为167.88+17.88s,给予双侧PH高频电刺激后潜伏期显著缩短至77.5±21.27s(P<0.01)。②跑步机试验显示大鼠跑动速度和跑动距离显著下降,分别为5.78+0.90crn/s和8.06+4.35m(P<0.01),给予双侧PH高频电刺激后显著提高跑动速度和跑动距离,分别为12.72+3.66crn/s和98.61+96.7
3、5m(P<0.01)。结论:腹腔注射氟哌啶醇可模拟帕金森病的僵直和运动不能症状,双侧高频电刺激PH可显著拮抗氟哌啶醇对大鼠僵直和运动不能的作用,提示PH为DBS治疗帕金森病运动不能的有效刺激靶点,为临床DBS刺激PH治疗PD提供实验依据。关键词:帕金森病;下丘脑后核;高频电刺激;跑步机中图分类号:Q95-3,Q683。R742.5文献标识码:A文章编号:1673—6273(2014)09—1633—04TheEffectofHighFrequencyStimulationofPosteriorHypothalamicNucleusinHaloperido1.in
4、ducedAkinesiarats*CAOYi-dong,JIADong~,HENGLi-jun,LIWei-xin(DepartmentofNeurosurgery,TangduHospital,FourthMilitaryMedicalUniversity,Xi'an,Shaanxi,710038,China】ABSTRACTObjective:Toexplorethepotentialtargetfordeepbrainstimulation(DBS)inthetreatmentofParkinson’sdiseasebyobservingchangesa
5、fterbilateralhighfrequencystimulationoftheposteriorhypothalamicnucleus(PH)postinjectionofhaloperido1.Methods:AdultmaleSDratswererandomlydividedintothreegroups:haloperidolandPHstimulationgroup(HAL+Stim),haloperidolgroup(HAL)andsalinegroup(Saline).Bipolarstimulationelectrodeswerebilate
6、rallyimplantedintoPHinPHstimulationgroup.Ratsinallthreegroupswereinjectedwithhaloperidolandthenthedegreeofcatalepsyandakinesiawereevaluatedbybartestandtreadmilltest,respectively.Inthestimulationgroup,PHwasbilaterallygivenhighfrequencystimulation(130Hz,60S,100)duringbehavioraltests.Re
7、sults:Thirtyminutesafterinjectionofhaloperidol(1.0mg/kg),ratswerecatalepsy.Thetreadmilltestsshowedthatthevelocityanddistanceweresignificantlyreductioninhaloperidoltreatmentrats.AndbilateralPHhighfrequencystimulationsignificantlyreducedthedegreeofcatalepsyaswellasimprovedthevelocityan
8、ddistanceint
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