产后发育的金字塔神经元刺激性和突触输入在老鼠的味觉皮质电路中的突触输入
Hillary Schiff1,2, Arianna Maffei1,3
1Department of Neurobiology and Behavior; Stony Brook University; Stony Brook, NY, USA.
bioRxiv : the preprint server for biology
|September 18, 2025
概括
在产后发育期间,味觉皮层 (GC) 神经元成熟,转向抑制. 味道回路的这种发育转变发生在断奶期间,并影响以味道为导向的行为.
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
- 感官系统 感官系统
背景情况:
- 皮层神经元在出生后成熟,影响可塑性.
- 断奶对于味觉回路的发展至关重要,但味觉皮层 (GC) 仍未得到充分研究.
- 人们对GC的产后变化知之甚少,GC是主要的味道加工区域.
研究的目的:
- 研究在味觉皮层 (GC) 深层的金字塔神经元的产后成熟.
- 为了比较GC神经元在断奶前和断奶后的膜特性.
- 了解刺激/抑制平衡和抑制电路的发育变化.
主要方法:
- 来自GC深层金字塔神经元的电生理学记录.
- 在断奶前和断奶后的年龄组之间对膜特性进行比较.
- 抑制电路成熟的分析,包括帕瓦胺 (PV) 神经元和周神经网络 (PNN).
主要成果:
- 在GC中的金字塔神经元在产后表现出内在刺激能力的动态变化.
- 在激发/抑制 (E/I) 平衡中观察到逐渐向抑制转移.
- 抑制电路的成熟,涉及PV神经元和PNN,与增加的抑制驱动相关.
结论:
- GC神经元经历了长期的产后成熟,影响了它们的内在刺激能力和E/I平衡.
- 抑制电路的成熟,特别是PV神经元连接,对于GC发育至关重要.
- 在过渡到独立养期间,GC的这些发育变化可能会影响味道反应特性.
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