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Soluble tau aggregates decrease the threshold for thalamic oscillations and increase the excitability of thalamic neurons

delete2025-04-23
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PRE
AI
M
Mitchell, Victoria
B
Bruno G. Frenguelli
B
Bakker, Saskia
R
Richard Teke Ngomba
M
Magnus J. E. Richardson
E
Emily Hill
M
Mark J. Wall *
DOI:10.1016/j.neuropharm.2025.110455delete
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摘要

摘要

En 中文
睡眠障碍在阿尔茨海默病(AD)等痴呆症早期频繁发生,可能由多种因素引起,包括皮层-丘脑-皮层(CTC)环路功能障碍。已有报道表明,tau丝状沉积发生在丘脑,且症状性AD患者存在丘脑萎缩,这可能促成CTC环路紊乱。本研究探讨了人重组tau可溶性聚集物是否可诱导丘脑回路的功能障碍。电生理测量在急性分离的雄性和雌性大鼠皮层丘脑切片上tau聚集物孵育后进行。tau聚集物显著降低了诱发纺锤波样振荡的阈值,并增加了丘脑神经元的兴奋性。tau聚集物还显著增加了在腹基丘脑神经元记录到的微小兴奋性突触后电流频率,提示可能存在终末Ca2+内流的变化。tau聚集物的这些促兴奋效应可能有助于AD模型和患者中观察到的异常CTC环路功能障碍,其表现为睡眠障碍和失神发作。
Keyword:
Tau
Thalamus
Electrophysiology
Oscillations

期刊

Neuropharmacology 封面图
Neuropharmacology
IF:
4.6
论文数:
803
被引数:
2.2W

机构

U
Univ Lincoln
学者数:
105
论文数: 87
被引数: 30
U
Univ Warwick
学者数:
730
论文数: 466
被引数: 209
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