发育和生命早期的压力诱导对5-HT3R-表达在听觉皮层内的内神经元的影响.
James T Moore1,2, Matthew J Sunthimer1,2, Ethan White1
1Hearing Research Group, Department of Biomedical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.
bioRxiv : the preprint server for biology
|September 18, 2025
概括
早期生活压力 (ELS) 通过影响特定内部神经元群体来改变听觉皮层的发育. 在3A (5-HT3R) 血清素受体表达细胞中的这些变化可能是感官处理缺陷的基础.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 细胞神经科学 细胞神经科学
背景情况:
- 早期生活压力 (ELS) 与神经精神疾病和终身感官处理缺陷有关.
- 发展的关键时期,特点是增加神经可塑性,特别容易受到压力.
- 在听觉皮层 (ACx) 关键时期的ELS会损害对听觉刺激的神经和行为反应.
研究的目的:
- 研究ELS如何影响表达 serotonin受体3A (5-HT3R) 在初级ACx中的特定内部神经元群体.
- 了解这些内部神经元在调解ELS诱导的临界期可塑性变化的作用.
主要方法:
- 在VIP和NDNF内部神经元中使用多重光 in situ杂交的量化Htr3a基因表达.
- 细胞密度和基因表达的比较在控制和ELS暴露的动物在发育过程中.
主要成果:
- 在对照动物的ACx关键期内,NDNF和VIP内部神经元的密度下降.
- 与对照组相比,ELS暴露维持了这些内部神经元的高密度.
- VIP神经元中的Htr3a表达在发育上升调节,并通过ELS进一步增加.
结论:
- 在ACx中,ELS扰乱了表达5-HT3R的内部神经元的正常发育轨迹.
- 压力引起的这些神经内神经元的变化可能会导致听觉处理缺陷.
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