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洞察与线粒体功能障碍相关的telbivudine诱导肌肉病变的机制
Wenfei Yu1, Zhuxun Li2, Wenjing Wu3
1Department of Neurology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong Province, China; University of Health and Rehabilitation Sciences, No. 17, Shandong Road, Shinan District, Qingdao City, Shandong Province, China.
Chemico-biological interactions
|September 2, 2023
概括
用于慢性乙型肝炎的telbivudine通过损害线粒体和能量代谢而导致肌肉损伤. 这项研究揭示了telbivudine.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
- 线粒体生物学 线粒体生物学
背景情况:
- 类似于telbivudine的核酸类似物 (NA) 治疗慢性乙型肝炎 (CHB).
- 神经肌病症是NAs,特别是telbivudine的一种报告的副作用.
- 需要阐明telbivudine诱导肌肉病变的精确机制.
研究的目的:
- 为了研究底层的分子机制telbivudine诱导肌肉病变.
- 探索线粒体功能障碍在telbivudine对肌肉的毒性影响中的作用.
主要方法:
- 已建立的telbivudine诱导肌肉病变的动物 (C57BL/6小鼠) 和细胞 (C2C12细胞) 模型.
- 评估了线粒体DNA (mtDNA) 拷贝数,氧化应激标志物和线粒体呼吸链复合体表达 (I和IV).
- 利用修改后的戈莫里三色素 (MGT) 染色来识别肌肉组织中的破碎的红色纤维 (RRF).
主要成果:
- 泰尔比武丁显著降低了mtDNA复制数,并增加了氧化应激.
- 观察到线粒体复合体I和IV表达的抑制,损害了氧化酸化.
- 破碎的红色纤维 (RRF) 的增加表明肌肉中线粒体的异常积累.
结论:
- 泰尔比武丁诱导的肌肉病与线粒体毒性和能量代谢受损有关.
- 线粒体平衡的破坏,由mtDNA枯竭和氧化应激证明,导致肌肉损伤.
- 这些发现表明NA诱导的神经肌病病的共同机制.
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