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星细胞和NMDA受体依赖的缓慢内流不同于老鼠和人类新皮质的年龄依赖的突触可塑性

Andrea Csemer^1,2, Adrienn Kovács¹, Baneen Maamrah^1,2

¹Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.

|July 25, 2023

概括

缓慢的向内流 (SICs) 在小鼠和人类中诱导突触可塑性. 这种依赖天体细胞的可塑性随着年龄的增长而下降,突出显示了SIC在与年龄相关的大脑变化中的作用.

科学领域:

神经科学是一个神经科学.
细胞电生理学细胞电生理学

背景情况:

星状细胞的谷氨酸释放通过外突触NMDA受体触发缓慢的内流 (SIC),作为神经元刺激事件.
SICs在调节突触可塑性的作用仍然是一个活跃的研究领域.

研究的目的:

为了调查慢向内流 (SICs) 是否可以诱导突触可塑性.
为了检查SIC对突触可塑性的年龄相关影响,在小鼠和人类皮质切片中.

主要方法:

用切片电生理学来记录神经元活动.
在小鼠和人类皮质切片上进行了实验,以评估与年龄相关的变化.

主要成果:

发现缓慢的向内流 (SICs) 诱导了中度形式的突触可塑性,类似于尖峰时间依赖的可塑性.
随着人类皮质切片的老化,观察到SIC活动的显著下降,在一定年龄以上完全消失.

结论:

缓慢向内流 (SICs) 在小鼠和人类中都有助于星细胞依赖的突触可塑性.
衰老对这种SIC介导的突触可塑性产生不同的影响,这表明它在年龄相关的神经变化中起着至关重要的作用.

关键词:

这种NMDA受体是NMDA受体.老化的老化衰老的老化星球细胞是星球细胞.人类大脑人类大脑新皮质新皮质的新皮质这是一个金字塔形细胞.缓慢的向内电流向内流.突触性可塑性突触性可塑性

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