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气味体验稳定了两个自闭症小鼠模型中的淋巴细胞输出表示
Kassandra L Sturm1, Daryna Semak1, Zoe A Scheier1
1College of Osteopathic Medicine, New York Institute of Technology, Old Westbury, New York 11568.
eNeuro
|October 8, 2025
概括
自闭症谱系障碍 (ASD) 患者在训练后表现出改善的气味识别能力. 自闭症小鼠模型通过抑制背景气味反应来实现这一目标,与典型小鼠不同.
科学领域:
- 神经科学是一个神经科学.
- 自闭症谱系障碍研究研究
- 感官处理 感官处理
背景情况:
- 新的刺激对患有自闭症谱系障碍 (ASD) 的人来说可能是压力.
- 重复暴露可以减少新兴刺激的影响.
- 自闭症小鼠模型,包括Cntnap2-/-和Shank3B+/-,在存在新的背景气味时,在识别目标气味方面表现出缺陷.
研究的目的:
- 在ASD小鼠模型中进行训练后,研究在气味识别方面的行为改进背后的神经机制.
- 为了比较ASD模型中的神经对气味的反应与训练前和训练后的野生型 (WT) 小鼠.
主要方法:
- 利用广场成像来监测Cntnap2-/-和Shank3B+/-小鼠以及WT小鼠的嗅球活动.
- 在气味识别任务中评估行为表现.
- 分析了嗅觉反应的神经区分能力和试验对试验的变化.
主要成果:
- 训练提高了所有小鼠群体的气味混合物的行为性能和神经区分能力.
- 纯粹的ASD模型小鼠表现出比WT小鼠更高的神经可变性;训练稳定了这些反应.
- 训练导致嗅球对背景气味的反应显著减少,特别是在ASD模型中,而不是WT小鼠.
结论:
- 尽管与WT小鼠有相似的行为改善,但Cntnap2-/-和Shank3B+/-小鼠使用了不同的神经战略.
- 通过广泛抑制背景气味反应,ASD模型在背景气味存在时实现了增强的嗅觉编码.
- 这突显了ASD模型中处理复杂嗅觉环境的独特神经适应.
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