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吸入的纳米颗粒通过嗅觉通路进入大脑,并诱导类似于陶病的神经退行性变化
Adriena Jedličková1, Daniela Kristeková1,2, Zuzana Husáková3
1Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno 602 00, Czech Republic.
ACS nano
|March 25, 2025
概括
吸入的 (II) 氧化物纳米粒子 (PbONPs) 通过破坏大脑细胞结构和血脑屏障,导致神经退行. 这些纳米粒子迅速积累,导致持续的损伤和潜在的治疗点.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
背景情况:
- 空气污染中含有纳米颗粒 (PbNPs),它们对健康构成重大风险,特别是神经毒性.
- 了解PbNP神经毒性和进入大脑的机制对于公共健康至关重要.
研究的目的:
- 在小鼠的吸入暴露后,研究 (II) 氧化物纳米粒子 (PbONPs) 的神经毒性作用.
- 阐明PbNP进入大脑的途径及其对大脑结构和功能的影响.
主要方法:
- 通过吸入暴露于PbONPs的小鼠来模拟现实世界的条件.
- 脑组织分析包括对病理变化的评估,血脑屏障的完整性和特定蛋白质的表达.
- 斑马鱼幼虫被用来评估运动运动活动和致命性.
主要成果:
- PbONPs诱导了希拉诺体的形成和细胞骨的破坏,这是神经退行性疾病的特征,而不会引起炎症.
- 对血脑屏障的损伤和在嗅觉通路中检测到PbONPs表明直接进入大脑.
- 海马被确定为最敏感的大脑区域,显示出显著的核缺陷和改变的信号通路,包括 fosforylation.
结论:
- 吸入PbNP会导致大脑中的迅速积累,通过细胞骨干扰和失调引起持续的神经毒性.
- 血脑屏障受损,允许PbNP通过全身循环和嗅觉通路进入大脑.
- 向细胞骨完整性和平衡可以提供针对PbNP诱导的神经退行症的治疗策略.
关键词:
这是BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB清除能力 清除能力细胞骨架 细胞骨架在mTOROR中使用mTOR.纳米毒性 纳米毒性神经退行性疾病的神经退行性疾病知道的 知道的 知道的
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