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大脑中的故障:放射治疗和脑雾之间的危险关系
Noemi Marino1, Martina Bedeschi1, Melania Elettra Vaccari1
1Bioscience Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy.
Frontiers in cellular neuroscience
|March 22, 2024
概括
癌症幸存者经常经历"脑雾",其特点是认知缺陷. 放射治疗可能引发神经炎症和蛋白质积累,导致认知能力下降和潜在的神经退行.
科学领域:
- 神经科学是一个神经科学.
- 在瘤学瘤学.
- 放射治疗研究 放射治疗研究
背景情况:
- 癌症幸存者经常报告持续的认知缺陷,称为"脑雾",影响记忆力,注意力和处理速度.
- 放射治疗 (RT) 是对脑瘤的常见治疗方法,可以诱导神经炎症和细胞应激,可能导致长期认知障碍.
- 背后的分子机制RT诱导的认知衰退和"大脑雾"仍然不完全理解.
研究的目的:
- 审查辐射疗法启动的影响认知功能的分子途径.
- 探索这些途径与癌症患者观察到的"脑雾"症状之间的潜在联系.
- 确定新的治疗策略,以在RT后的健康大脑组织中保持认知功能.
主要方法:
- 关于放射治疗对大脑组织影响的当前科学文献的综述.
- 分析分子机制,包括神经炎症,内质网膜 (ER) 压力和蛋白质降解途径.
- 检查微质细胞,星体细胞,活性氧物种 (ROS) 和未折叠蛋白反应 (UPR) 在辐射诱导的认知缺陷中的作用.
主要成果:
- 放射治疗可以重新编程脑瘤的微环境,通过微质细胞和天体细胞激活增加神经炎症.
- 辐射暴露会诱导ER压力和UPR,导致错误折叠的蛋白质积累和潜在的神经退行.
- 电离辐射会损害蛋白质酶的活性,加剧ER压力,并通过免疫蛋白质酶路径促进神经炎症.
结论:
- 辐射诱导的神经炎症,ER压力和蛋白质错折是放射治疗后认知衰退和"脑雾"的关键因素.
- 了解这些分子通路对于开发减轻认知副作用的干预措施至关重要.
- 针对这些机制为新的治疗策略提供了潜力,以保护癌症幸存者的认知功能.
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