在妊娠晚期产前暴露于雷西奎莫德对大鼠后代发育和行为的影响
Monique Martinez1, Stuart A Tobet2,3,4, Taben M Hale1,2
1Department of Basic Medical Sciences, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.
概括
怀孕期间通过Resiquimod (RQ) 激活母体免疫在老鼠中延迟了雌性青春期,并增加了成年后代的焦虑行为. 这些发现表明,产前免疫挑战会影响神经发育和行为.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 发育生物学 发展生物学
背景情况:
- 孕妇的压力和怀孕期间的免疫激活会影响胎儿的发育.
- 产前暴露于德克萨米他等物质会改变后代的神经内分泌和自主功能.
- 雷西奎莫德 (RQ) 是类似收费受体7的激活剂,诱导免疫反应.
研究的目的:
- 研究Resiquimod诱导的孕期晚期母体免疫激活对大鼠后代发育和行为的影响.
- 为了确定产前免疫挑战是否会影响青春期开始和成年期类似焦虑的行为.
主要方法:
- 怀孕的老鼠在怀孕18日内注射Resiquimod (RQ) 或载体.
- 通过体重和阴道开口监测后代的发育.
- 用在青春期前和成年后代的开放场地测试来评估类似焦虑的行为.
主要成果:
- 产前RQ暴露并没有影响母亲的照顾或幼大小,但减弱了母亲的体重增加.
- 雌性后代表现出阴道打开的延迟,这表明青春期的开始延迟了.
- 成年后代 (男性和女性) 体重增加减弱,焦虑类行为增加.
结论:
- 怀孕后期通过RQ的孕产妇免疫激活会影响胎儿的大脑发育,导致神经内分泌和代谢成熟的改变.
- 青春期似乎是一个关键的窗口,表现出由产前免疫挑战引起的行为变化.
- 这些发现突出了母亲免疫激活对后代神经发育和行为的长期后果.
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