独特的嗅管-皮质神经回路协调了帕金森病中的认知功能
Shuai-Shuai Wang1, Xing-Feng Mao2, Zhi-Shen Cai1
1Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, China; International Joint Laboratory for Drug Target of Critical Illnesses, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
Research (Washington, D.C.)
|October 3, 2024
概括
帕金森病 (PD) 的认知衰退与嗅觉系统功能障碍有关. 嗅球和皮质皮质中的异常神经连贯性可以预测和治疗PD中的认知障碍.
科学领域:
- 神经科学是一个神经科学.
- 神经退行性疾病 神经退行性疾病
- 嗅觉系统研究 嗅觉系统研究
背景情况:
- 认知功能障碍是帕金森病 (PD) 中的主要非运动症状.
- 嗅觉系统功能障碍预测了PD的认知衰退,但潜在的机制仍然不清楚.
研究的目的:
- 研究帕金森病中嗅觉回路异常与认知功能障碍之间的联系.
- 为了确定PD相关认知障碍的嗅觉系统内的特定的神经机制和潜在的治疗点.
主要方法:
- 利用临床功能性MRI (fMRI) 来评估嗅觉通路中的功能连接性.
- 使用帕金森病小鼠模型研究嗅觉系统中的神经连贯性.
- 进行了转录和遗传分析,以确定关键的分子参与者.
- 开发并测试了一种新的深度大脑刺激协议在嗅觉球.
主要成果:
- 在PD患者和小鼠中,嗅球 (OB) 与皮质皮质 (PC) /内腔皮质 (EC) 之间显示出异常的功能连接.
- 通过神经连贯性确定了两个不同的OB中/ (M/T) 细胞亚群,这些亚群向aPC和EC投射,这对通过神经连贯性对认知记忆至关重要.
- 在OB M/T细胞介导的认知功能中发现了生物定向缺陷1 (Bod1) 的潜在作用.
- 表明嗅觉灯泡深度大脑刺激改善了Bod1缺陷和PD小鼠的认知功能.
结论:
- 嗅觉系统的异常连贯活动是评估帕金森病认知功能的潜在生物标志物.
- 嗅觉系统,特别是OB M/T细胞通路,代表了治疗PD认知功能障碍的有希望的治疗标.
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