Sex differences in head‐fixed voluntary running behavior in C57BL/6J mice

Sex differences in head‐fixed voluntary running behavior in C57BL/6J mice
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C57BL/6J 小鼠头部的性别差异固定自愿跑步行为

DOI:
10.1111/ejn.14654
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发表时间:
2019
影响因子:
3.4
通讯作者:
Padmanabhan, Krishnan
Padmanabhan, Krishnan
中科院分区:
医学3区
文献类型:
--
作者:
Warner, Emily J.;Padmanabhan, Krishnan

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在野外,雌性和雄性小鼠之间跑步行为的性别差异是自然发生的。最近使用头部固定的小鼠在自愿跑步轮上进行的实验利用了类似的运动活动,以深入了解从空间导航到决策的许多行为的神经基础。然而,在头部固定的实验范式中,女性和男性之间是否存在性别差异在很大程度上是未知的。为了解决这一问题,我们对头部固定的雌性和雄性C57 BL/6 J小鼠在自愿跑步轮上的运动活动进行了表征。首先,我们发现在最初的7天里,平均来说,动物的速度和跑步时间都增加了。此外,我们发现雌性小鼠在遇到轮子的最初2天内习惯于向前跑,而雄性小鼠需要长达4天的时间才习惯于向前跑。综上所述,我们描述了头部固定跑步中性差异行为的特征,这些特征应该在使用雌性和雄性小鼠的实验中考虑。
Sex differences in running behaviors between female and male mice occur naturally in the wild. Recent experiments using head‐fixed mice on a voluntary running wheel have exploited analogous locomotor activity to gain insight into the neural underpinnings of a number of behaviors ranging from spatial navigation to decision‐making. It is however largely unknown if sex differences exist between females and males in a head‐fixed experimental paradigm. To address this, we characterized locomotor activity in head‐fixed female and male C57BL/6J mice on a voluntary running wheel. First, we found that over the initial 7‐day period, on average, animals increased both the velocity and the time spent running. Furthermore, we found that female mice habituated to running forward over the initial 2 days of encountering the wheel, while male mice took up to 4 days to habituate to running forward. Taken together, we characterized features of a sexually divergent behavior in head‐fixed running that should be considered in experiments employing female and male mice.
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