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围产期高雄化和免疫激活在动物中 自闭症模型亚型
Francine F Burke1, Alison M Randell1, Kerri M Sparkes1
1Department of Psychology, Memorial University of Newfoundland, 232 Elizabeth Ave., St. John's, NL, A1B 3×9, Canada.
Translational psychiatry
|January 29, 2026
概括
孕产妇高雄化和孕产妇免疫激活 (MIA) 模型都在后代中显示自闭症谱系障碍 (ASD) 的特征. 然而,这些模型表现出明显的神经发育和行为差异,表明了独特的潜在机制.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 免疫学 免疫学 免疫学
背景情况:
- 正如在多囊性卵巢综合征 (PCOS) 中所见的,增加的母性雌激素与更高的自闭症谱系障碍 (ASD) 发病率有关.
- 母亲的雄激素和ASD之间的因果关系仍然未确立.
- 孕产妇免疫激活 (MIA) 是ASD病因学的另一个拟议模型.
研究的目的:
- 调查小鼠模型中围产期高雄化是否重复了ASD核心特征.
- 为了比较超化模型与ASD的MIA模型.
- 阐明这两个ASD模型的独特机制和神经发育轨迹.
主要方法:
- 使用了一种围产期高质化的小鼠模型.
- 将高雄化模型与母体免疫激活 (MIA) 模型进行比较.
- 评估行为现象型,包括社会沟通和重复行为.
- 进行了ex vivo磁共振成像 (MRI) 来分析大脑体积.
- 分析了胎盘和新生儿大脑组织的免疫标记物和蛋白质表达 (DRD2,BDNF).
主要成果:
- 超化和MIA模型都表现出类似ASD的表型,但具有不同的行为亚型.
- 超雄性化的后代在社交沟通方面表现出更大的缺陷,而MIA后代表现出更多的重复行为.
- 在这两种模型中,MRI揭示了皮质体积变化的明显模式.
- 胎盘在两组中都显示LIX (CXCL5) 降低,具有独特的免疫转移 (MIA中的IL-4,IL-1β;高雄化中的TNFα).
- 在这两种模型中,新生儿大脑显示IL-2减少,在MIA中IL-17A和IL-12p70的额外减少.
- DRD2和BDNF蛋白水平有所不同:高基化胎儿大脑上调,MIA下调.
结论:
- 围产期高雄化和MIA诱导后代明显的神经发育和行为变化.
- 这些模型提供了关于ASD亚型异质性的见解.
- 这些发现表明,不同的生物学机制是不同ASD病因的基础.
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