三价抗体和五价抗体在小鼠中损害心脏线粒体功能
Itanna Isis Araujo de Souza1,2, Maria Eduarda Maciel Fernandes Pavarino1, César Francisco Maricato da Rosa1
1Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.
International journal of molecular sciences
|September 27, 2025
概括
五价抗 (Sb(V)) 和其活性形式三价 (Sb(III)) 危害心脏线粒体. 这些抗金质物质降低了能量生产,并增加了宿主细胞中有害的活性氧物种 (ROS).
科学领域:
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
- 细胞生物学 细胞生物学
背景情况:
- 五价抗酸 (Sb(V)) 是一种长期用于治疗莱什曼病的治疗方法.
- Sb(V) 作为前药物,在巨细胞内转化为Sb(III),以破坏寄生虫的能量代谢.
- 抗金质对宿主细胞线粒体的影响仍然不太清楚.
研究的目的:
- 调查Sb(V) 和Sb(III) 对隔离的小鼠心脏线粒体的直接影响.
- 评估抗氧化物暴露对线粒体呼吸,ATP生产,ROS生成和膜潜力的功能后果.
主要方法:
- 从小鼠的心脏中分离出线粒体,使用微分离心法.
- 隔离的线粒体被化在不同度的Sb (V) 或Sb (III) 中.
- 通过测量氧气消耗,ATP生产,ROS生成和跨膜潜力来评估线粒体功能.
主要成果:
- 在1μg/mL和1ng/mL的度下,Sb(V) 和Sb(III都显著降低了线粒体的氧气消耗.
- Sb(V) 治疗导致反应性氧物种 (ROS) 生产增加.
- 从1ng/mL开始,Sb (V) 和Sb (III) 均影响了ATP的产生,并观察到增加的质子泄漏和改变的跨膜潜力.
结论:
- Sb (V) 和Sb (III) 直接损害了被孤立的小鼠心脏线粒体的功能.
- 抗生素治疗通过减少ATP合成,损害了线粒体的能量生产.
- 增加ROS生成和改变的线粒体膜潜力表明与抗氧药物相关的潜在心脏毒性.
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