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Anxiety-related defensive behavioral responses in mice selectively bred for High and Low Activity
Genes, Brain and Behavior ( IF 2.5 ) Pub Date : 2021-03-31 , DOI: 10.1111/gbb.12730
Winona C Booher 1, 2 , Lucy A Hall 1 , Aimee L Thomas 1 , Erika A Merhroff 1 , Guillermo J Reyes Martínez 1 , Katharine E Scanlon 1 , Christopher A Lowry 3, 4, 5, 6, 7 , Marissa A Ehringer 1, 2
Affiliation  

High and Low Activity strains of mice (displaying low and high anxiety-like behavior, respectively) with 7.8–20 fold differences in open-field activity were selected and subsequently inbred to use as a genetic model for studying anxiety-like behavior in mice (DeFries et al., 1978, Behavior Genetics, 8:3-13). These strains exhibited differences in other anxiety-related behaviors as assessed using the light–dark box, elevated plus-maze, mirror chamber, and elevated square-maze tests (Henderson et al., 2004, Behavior Genetics, 34: 267-293). The purpose of these experiments was three-fold. First, we repeated a 6-day behavioral battery using updated equipment and software to confirm the extreme differences in anxiety-like behaviors. Second, we tested novel object exploration, a measure of anxiety-like behavior that does not rely heavily on locomotion. Third, we conducted a home cage wheel running experiment to determine whether these strains differ in locomotor activity in a familiar, home cage environment. Our behavioral test battery confirmed extreme differences in multiple measures of anxiety-like behaviors. Furthermore, the novel object test demonstrated that the High Activity mice exhibited decreased anxiety-like behaviors (increased nose pokes) compared to Low Activity mice. Finally, male Low Activity mice ran nearly twice as far each day on running wheels compared to High Activity mice, while female High and Low Activity mice did not differ in wheel running. These results support the idea that the behavioral differences between High and Low Activity mice are likely to be due to anxiety-related factors and not simply generalized differences in locomotor activity.

中文翻译:

为高活动和低活动选择性繁殖的小鼠的焦虑相关防御行为反应

选择在开放场活动中具有 7.8-20 倍差异的高活动和低活动品系小鼠(分别显示低和高焦虑样行为),随后进行近交以用作研究小鼠焦虑样行为的遗传模型( DeFries 等人,1978 年,行为遗传学,8:3-13)。这些菌株在其他焦虑相关行为方面表现出差异,如使用明暗盒、高架十字迷宫、镜室和高架方形迷宫测试评估的那样(Henderson 等人,2004 年,Behavior Genetics,34:267-293) . 这些实验的目的有三个。首先,我们使用更新的设备和软件重复了为期 6 天的行为电池,以确认类似焦虑行为的极端差异。其次,我们测试了新的对象探索,这是一种不严重依赖运动的类似焦虑行为的衡量标准。第三,我们进行了家庭笼轮运行实验,以确定这些菌株在熟悉的家庭笼环境中的运动活动是否不同。我们的行为测试组证实了焦虑样行为的多种测量方法存在极大差异。此外,新的对象测试表明,与低活动小鼠相比,高活动小鼠表现出减少的焦虑样行为(增加鼻子戳)。最后,与高活动小鼠相比,雄性低活动小鼠每天在跑轮上跑的距离几乎是高活动小鼠的两倍,而雌性高活动和低活动小鼠在轮子上的跑动没有差异。这些结果支持这样一种观点,即高活动小鼠和低活动小鼠之间的行为差​​异可能是由于与焦虑相关的因素,而不仅仅是运动活动的普遍差异。我们进行了家庭笼轮运行实验,以确定这些菌株在熟悉的家庭笼环境中的运动活动是否不同。我们的行为测试组证实了焦虑样行为的多种测量方法存在极大差异。此外,新的对象测试表明,与低活动小鼠相比,高活动小鼠表现出减少的焦虑样行为(增加鼻子戳)。最后,与高活动小鼠相比,雄性低活动小鼠每天在跑轮上跑的距离几乎是高活动小鼠的两倍,而雌性高活动和低活动小鼠在轮子上的跑动没有差异。这些结果支持这样一种观点,即高活动小鼠和低活动小鼠之间的行为差​​异可能是由于与焦虑相关的因素,而不仅仅是运动活动的普遍差异。我们进行了家庭笼轮运行实验,以确定这些菌株在熟悉的家庭笼环境中的运动活动是否不同。我们的行为测试组证实了焦虑样行为的多种测量方法存在极大差异。此外,新的对象测试表明,与低活动小鼠相比,高活动小鼠表现出减少的焦虑样行为(增加鼻子戳)。最后,与高活动小鼠相比,雄性低活动小鼠每天在跑轮上跑的距离几乎是高活动小鼠的两倍,而雌性高活动和低活动小鼠在轮子上的跑动没有差异。这些结果支持这样一种观点,即高活动小鼠和低活动小鼠之间的行为差​​异可能是由于与焦虑相关的因素,而不仅仅是运动活动的普遍差异。
更新日期:2021-03-31
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