大鼠产前母体冷应激对子代自发、探索及焦虑行为的影响*

doi:10.12047/j.cjap.5722.2019.030

摘要/Abstract

摘要： 目的: 研究产前冷应激对妊娠大鼠子代行为及情绪的影响。方法: 将6只SPF级Wister妊娠母鼠,随机分为常温对照组和冷应激组,每组3只。常温对照组妊娠母鼠在(22±2)℃的环境中饲养,冷应激组妊娠母鼠在产前7 d置于人工智能气候室(4±0.1)℃中饲养,待产下幼鼠以后,分为常温对照组公鼠(MR,22只),常温对照组母鼠(FR,15只),冷应激组公鼠(MC,15只),冷应激组母鼠(FC,15只)四组,在子代第四周龄时进行旷场实验、高架十字迷宫实验。结果: 在旷场实验中,常温对照组公鼠、母鼠与冷应激组公鼠、母鼠的自发活动、探索行为之间无明显差异(P＞0.05)。在高架十字迷宫实验中,冷应激组公鼠、母鼠的开臂滞留时间、开臂进入次数及路程等总体上显著高于常温对照组公鼠、母鼠(P＜0.05)。结论: 产前母体冷应激对子代自发活动、探索行为及活跃程度无显著影响,但子代出现明显的焦虑行为减少的异常行为。

关键词: 大鼠, 产前冷应激, 子代, 行为学

Abstract: Objective: To study the effects of prenatal cold stress on the behavior and mood of offspring in pregnant rats. Methods: Six SPF-class Wister pregnant rats were randomly divided into normal temperature control group and cold stress group with 3 rats in each group. The pregnant female rats in the normal temperature control group were kept in the environment of (22±2)℃, and the pregnant female rats in the cold stress group were placed in the artificial intelligence climate chamber at(4±0.1)℃ for 7 days before the birth, and the young rats were divided into normal temperature after the young rats were born. After the young rats were born, they were divided into normal temperature control group of male rats (MR, 22), normal temperature control group of mother rats (FR, 15), cold stress group of male rats (MC, 15), and cold stress group of female rats (FC, 15) .In the fourth generation of the offspring, the open field experiment and the elevated cross maze test were carried out. Results: In the open field experiment, there was no significant difference in spontaneous activity and exploration behavior between the normal temperature control group and the cold stress group (P＞0.05). In the elevated plus maze experiment, the retention time of the open arms, the number of open arms and the distance of the male and female rats in the cold stress group were significantly higher than those in the normal temperature control group (P＜0.05). Conclusion: Prenatal maternal cold stress has no significant effect on spontaneous activity, exploration behavior and activity level of offspring, but the offspring have obvious abnormal behaviors with reduced anxiety behavior.

Key words: rat, prenatal cold stress, offspring, behavior

李文杰, 杨焕民, 连帅, 徐彬, 王立鹏, 臧树成, 袁建彬, 丁梦圆. 大鼠产前母体冷应激对子代自发、探索及焦虑行为的影响^*[J]. 中国应用生理学杂志, 2019, 35(2): 135-139.

LI Wen-jie, YANG Huan-min, LIAN Shuai, XU bin, WANG Li-peng, ZANG Shu-cheng, YUAN Jian-bin, DING Meng-yuan. Effects of prenatal maternal cold stress on spontaneous, exploratory and anxious behaviors in offspring[J]. CJAP, 2019, 35(2): 135-139.

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大鼠产前母体冷应激对子代自发、探索及焦虑行为的影响^*

Effects of prenatal maternal cold stress on spontaneous, exploratory and anxious behaviors in offspring

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