目的探讨旷场实验(open field test,OFT)和明暗箱实验(1ight—darkbox,LDB)作为昆明小鼠状态焦虑动物模型的相关性。方法20只成年雄性昆明小鼠先后放入旷场敞箱和明暗穿梭箱,摄像系统记录5rain的行为变化,实验间隔1周,实验参数如下:OFT中央区停留时间百分率(OFT-Ctime%)、中央区水平运动百分率(OFT—Ccross%)、总水平运动得分(OFT—Cross)、总垂直运动得分(OFT—Rear)和粪便粒数得分(OFT-FB),LDB明区停留时间百分率(LDB-Ltime%)、明区水平运动百分率(LDB—Lcross%)、明区垂直运动百分率(LDB-Lrear%)、穿梭次数得分(LDB—Transition)、总水平运动得分(LDB.Cross)、总垂直运动得分(LDB—Rear)和粪便粒数得分(LDB-FB);采用因子分析、聚类分析和相关分析统计方法进行数据处理。结果①因子分析和聚类分析提示,OFT/LDB独立评价时具有相似3维结构:OFT/LDB焦虑因子、OFT/LDB活性因子和OFT/LDB情绪因子;OFT-LDB合并评价时则为五维结构:LDB焦虑因子、OFT焦虑因子、LDB活性因子、OFT-LDB情绪因子和OFT活性因子。②相关分析提示,OFT情绪因子与LDB情绪因子具有较好相关性(Pearson=0.383,P〈0.05);LDB焦虑因子与LDB焦虑因子(Pearson=0.989,P〈0.01),OFT焦虑因子与OFT焦虑因子(Pearson=0.934,P〈0.01),LDB焦虑因子与LDB焦虑因子(Pearson=0.956,P〈0.01),OFT/LDB情绪因子与OFT—LDB情绪因子(Pearson=0.835,P〈0.01;Pearson=0.696,P〈0.01),OFT活性因子与OFT活性因子(Pearson=0.926,P〈0.01)具有较好相关性。结论OFT/LDB独立评价时具有相似三维结构,而OFT—LDB合并评价时则为5维结构:仅OFT/LDB情绪因子可以合并。因此,在以“行为组学”联合评价时,各维度并非一一对应,应注意动物模型异质性问题。
Objective To explore the correlation between open field test (OFT) and light-dark box ( LDB), as two animal models of state anxiety in Kunming mice. Methods The behavior of adult, male, Kunming mice in OFT and LDB was recorded by sequence, for five minutes,with a one-week inter-trial interval. The follow- ing parameters were evaluated:percentage of time exploring in the OFT central area( OFT-Ctime% ) ; percentage of squares crossing in the OFT central area( OFT-Ccross% ) ; total number of squares crossing in OFT(OFT-Cross) ; total number of rears in the OFT(OFT-Rear) ; number of fecal boll in OFT(OFT-FB) ; percentage of time explo- ring in the LDB light area( LDB-Ltime% ) ; percentage of squares crossing in the LDB light area( LDB-Lcross% ) ; and percentage of rears in the LDB light area( LDB-Lrear% ) ; transitions between two areas in LDB( LDB-Transi- tion) ; total number of squares crossing in LDB(LDB-Cross) ; total number of rears in LDB(LDB-Rear) ; number of fecal boll in LDB (LDB-FB). Subsequently, factor analysis, cluster analysis and correlation analysis were calcu- lated for these parameters. Results Factor analysis and cluster analysis of variances from either OFF or LDB re- vealed a three behavioral dimensions:anxiety factor (loaded by OFT-Ctime%, OFT-Ccross% or LDB-Ltime%, LDB-Lcross% ,LDB-Lrear% ), activity factor ( loaded by OFT-Cross, OFT-Rear or LDB-Transition, LDB-Cross, LDB-Rear) and emotionality factor(loaded by OFT-FB or LDB-FB). While all the variances from both OFT and LDB in combination were analyzed, it could be seen as five components :' LDB-anxiety factor ( loaded by LDB- Ltime%, LDB-Lcross% and LDB-Lrear% ) ,' OFT-anxiety factor ( loaded by OFT-Ctime% and OFT-Ccross% ), 'LDB-activity factor (loaded by LDB-Transition, LDB-Cross and LDB-Rear), OFT-LDB-emotionality factor( loaded by OFT-FB and LDB-FB) and 'OFT-activity factor (loaded by OFT-Cross and OFT-Rear). Good correlation were found b