喘通过通过LTD4对NF-kB信号通路进行上调来加剧阿尔茨海默病的发生
Xiaozhen Wang1, Wenjing Gan1, Meimei Kang1
1Central Laboratory, Xuanwu Hospital, Capital Medical University, Beijing Geriatric Medical Research Center, Key Laboratory for Neurodegenerative Disease of Ministry of Education, Beijing, PR China.
Brain research
|December 13, 2023
概括
喘通过激活炎症途径和增加粉样蛋白-β,使阿尔茨海默病 (AD) 病理和小鼠的认知衰退恶化. 蒙特卢卡斯特治疗改善了这些AD症状.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 临床研究将喘与痴呆和阿尔茨海默病 (AD) 风险增加联系起来.
- 喘对AD进展的影响和转基因模型中的潜在机制需要进一步调查.
研究的目的:
- 为了确定喘是否会在APP/PS1小鼠中加剧AD病理.
- 探索喘影响AD的分子机制.
- 评估蒙特卢卡斯特在缓解喘引起的AD恶化的治疗潜力.
主要方法:
- 在6个月大的APP/PS1小鼠中诱导了一种喘模型.
- 用莫里斯水迷宫测试来评估认知功能.
- 分析了包括NF-κB通路,BACE1,粉样β (Aβ) 沉积和神经炎症在内的关键分子标志物.
- 在海马中测量了LTD4及其受体CysLT1R的水平.
主要成果:
- 喘显著影响了APP/PS1小鼠的空间学习和记忆.
- 喘上调了NF-κB炎症途径,增加了BACE1表达,Aβ沉积,神经元损伤和神经炎症 (微质和星球细胞激活).
- 在喘的APP/PS1小鼠中观察到高的LTD4和CysLT1R水平,这表明它们在AD病理学中的作用.
结论:
- 喘在APP/PS1小鼠中加剧了AD病理和认知障碍,主要是通过NF-κB通路的激活.
- LTD4/CysLT1R通路与喘对AD的有害影响有关.
- 蒙特卢卡斯特证明了治疗疗效,改善了AD小鼠与喘相关的认知缺陷和病理变化.
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