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《急、慢性束缚应激对小鼠情绪和学习记忆能力的不同影晌.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、2013。29(2):145—148神经解剖学杂志ChineseJournalofNeuroanatomy急、慢性束缚应激对小鼠情绪和学习记忆能力的不同影响周科成,佳娜提,吴黄辉,王锋,胡伟,寇俊萍h(1.中国药科大学中药复方研究室,南京211198;2.福建医科大学,福州350108;3.第四军医大学,西安710032)【摘要】目的:观察急性束缚应激和慢性束缚应激对小鼠情绪和学习记忆能力的影响。方法:小鼠按体重和自发活动随机分成三组,即空白对照组,急性应激组和慢性应激组。采用束缚躯体的方法建立急慢性应激模型,并用自发活动实验检
2、测小鼠的情绪状态,避暗实验检测小鼠的学习记忆能力。结果:自发活动实验中急性束缚应激组小鼠平均速度与空白组相比有显著增加(P<0.01),中央区活动时间和中央区活动路程百分比则显著增加(P<0.05),慢性应激组平均速度与空白组相比有显著减小(P<0.01),中央区活动时间和中央区活动路程百分比显著减小(P<0.05);避暗测试中急性应激组避暗潜伏期和错误次数没有改变,而慢性应激组潜伏期显著减小(P<0.05)、错误次数急显著增加(P<0.01)。结论:急性束缚应激会使小鼠产生烦躁情绪、但不会改变其学习记忆能力;慢性束缚应激会使小
3、鼠产生抑郁样情绪,会损害其学习记忆能力。【关键词】急性束缚应激;慢性束缚应激;避暗;学习记忆;抑郁/焦虑DiferentefectsonemotionandcognitioninducedbyacuterestraintstressandchronicrestraintstressinmiceZhouKechengJiaNati,WuHuanghui,WangFeng,HuWei。,KouJunping(1.DepartmentofComplexPrescriptionofTraditionalChineseMedicine,C
4、hinaPharmaceuticalUniversity,Nanjing211198,China;2.FujianMedicalUniversity,Fuzhou350108,China;3.TheFourthMilitaryMedicalUniversity,Xi’an710032,China.)【Abstract】Objective:Toinvestigatetheeffectsofacuterestraintstress(ARS)andchronicrestraintstress(CRS)ontheemotionalcha
5、ngeandcognitiveebilityofmice.Methods:Miceweredividedtothreegroupsaccordingbodyweightandspontaneousactivitystatei.e.controlgroup,ARSandCRS.Acuterestraintstressandchronicrestraintstressanimalmodelswereestablishedandchangesofemotionalandcognitiveperformanceswereexamined
6、byopenfieldandstep—throughtests.Results:Inopenfieldtest,ARSgroupshowedlowermeanvelocity(P<0.01),timeincentralzone(P<0.05)andthepercentageofdistanceinzone/total(P<0.05),whileCRSgroupsignificantlyreduced(P<0.05).Thereisnochangeofstep-throughlatencyandnumberofmistakesin
7、ARSgroup,however,step—throughlatencysignifi—cantlyincreased(P<0.01)andnumberofmistakesdeceasedinCRSgroup(P<0.05).Conclusion:Thepresentre—suitssuggestedthatARScausedirritableemotion,whileitdidnotshoweffectoncognitivefunctioninmice.Onthecon—trary,CRSinduceddepressionan
8、dcognitiveimpairments.【Keywords】acuterestraintstress;chronicrestraintstress;learnandmemory;depression/anxiety应激是机体在受到各种强烈因素(应激原)刺激时
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