神经生物学研究方法.ppt
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1、WTMU P7P10P13P15-P21 P7P10-P14 Camk2-cre;foxg1 L1controlMUCamk2-cre;foxg1;Rosa-gfp GFP40000XPSD/Active zone宽度、囊泡数量、囊泡数量与active zone相对值150000XAdult TM7 rest14 Golgi staining Foxg1f/fCamk2-creer; Foxg1f/fWTMU* *0246810121416102030405060708090100110120130140frequency of intersectionsDistance from soma
2、(m) (* P0.05;*P0.01;*P0.001)Dendrites branch complexity of pyramidal cell in Sensory cortex WTMUDendrites branch complexity of pyramidal cells in Sensory cortex 示踪示踪WTMUCamk2-cre;foxg1 AD TM5-15 DIL示踪示踪报告基因示踪报告基因示踪P2P6P17P4组织培养组织培养组织培养组织培养kowt影像学检测影像学检测LTP : 当突触前的传入纤维受到高频刺激时,兴奋性神经递质谷氨酸从突触前膜到突触间隙,和突触
3、后膜上的N M D A受体结合,激活N M D A受体,使阻碍钙离子内流的镁离子被移除,大量钙离子内流,激活细胞内的一系列分子过程,最终形成LTP。(1) 钙离子(2) NMDA(3) aCaMKII(4) PKA(5) AMPA(6) PSD-95I am depressed. Me too.人类人类脑功能障碍脑功能障碍神经精神疾病神经精神疾病 治疗干预治疗干预诱发诱发减缓减缓理想的动物模型理想的动物模型动物动物脑功能障碍脑功能障碍行为行为/认知障碍认知障碍 治疗干预治疗干预诱发诱发减缓减缓动物模型的神经生物学原理及病理学机制应和人类疾病的病理学机制一样或类似动物表现出和神经精神疾病病人相同
4、的行为模式动物模型应能对已知的抗精神病药物处理作出相应的反应或治疗前景机理有效性机理有效性表观有效性表观有效性预测有效性预测有效性Behavioral testsT-maze/radio arm maze : spatial working memoryWater maze: learning/ spatial reference memory/ working memoryObject Recognition: novel object learning/ place learningSensory gating: prepulse inhibition, latent inhibition
5、classical fear conditioningInformation processingOpen field: spontaneous activityElevated plus maze: anxietyDepression: tail suspension test, forced swim testSucrose preference test, social interaction,Learning/ memory/ cognitionBasicOpen FieldElevated Plus MazeFree exploration for 5 minMain measure
6、ment: Distance moved in the maze, %Time spent in Open Arms: time(open)/(total time) Risk assessment, etc.(anxiety)(EthoVision system)Social interaction testTail suspension test (TST) 应激模型应激模型小鼠悬尾法小鼠悬尾法(tail suspension testtail suspension test),一种行为绝望法。将小鼠),一种行为绝望法。将小鼠 倒悬倒悬在实验小室内,观察在实验小室内,观察5 5分钟内不动时
7、间。分钟内不动时间。抗抑郁药可减少不动时间抗抑郁药可减少不动时间Forced swim test (FST)强迫游泳实验强迫游泳实验(forced swimming test) 动物在恶劣环境下不能逃逸时,动物在恶劣环境下不能逃逸时,便出现便出现行为绝望行为绝望(behavioural despair),处于一种不动状态,处于一种不动状态(immobility)是一种有效地评价抗抑郁药的大鼠抑郁模型。)是一种有效地评价抗抑郁药的大鼠抑郁模型。T-maze (Spatial Working Memory)Sample runChoice run+-?+Main measurement: (6 t
8、rials/day)%Correct response (Running latency)(Elapsed between the opening of the stem-door and the closing of the arm-door)Object RecognitionThe animal is familiarized with two identical sample objects. Following a retention interval the animal is re-exposed to a third copy of the now familiarized s
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- 神经 生物学 研究 方法
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