Mitochondrial accumulation of doxorubicin in cardiac and diaphragm muscle following exercise preconditioning.

Mitochondrial accumulation of doxorubicin in cardiac and diaphragm muscle following exercise preconditioning.
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DOI:
10.1016/j.mito.2018.02.005
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发表时间:
2019-03
期刊:
影响因子:
4.4
通讯作者:
Smuder AJ
Smuder AJ
中科院分区:
生物学3区
文献类型:
--
作者:
Morton AB;Mor Huertas A;Hinkley JM;Ichinoseki-Sekine N;Christou DD;Smuder AJ

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阿霉素(DOX)是一种高效的蒽环类抗生素。不幸的是,DOX的临床使用受到由线粒体活性氧(ROS)产生导致的对心脏和呼吸(即隔膜)肌肉的有害作用的风险的限制。在这方面,运动被证明可以防止DOX诱导的肌毒性和防止线粒体功能障碍。然而,目前其保护机制尚不清楚。我们假设运动可能通过增加线粒体特异性ATP结合盒(ABC)转运蛋白的表达和减少线粒体DOX积累来诱导保护作用。我们的研究结果证实了这一发现,并表明两周的运动预处理足以防止心肺功能障碍。
Doxorubicin (DOX) is a highly effective anthracycline antibiotic. Unfortunately, the clinical use of DOX is limited by the risk of deleterious effects to cardiac and respiratory (i.e. diaphragm) muscle, resulting from mitochondrial reactive oxygen species (ROS) production. In this regard, exercise is demonstrated to protect against DOX-induced myotoxicity and prevent mitochondrial dysfunction. However, the protective mechanisms are currently unclear. We hypothesized that exercise may induce protection by increasing the expression of mitochondria-specific ATP-binding cassette (ABC) transporters and reducing mitochondrial DOX accumulation. Our results confirm this finding and demonstrate that two weeks of exercise preconditioning is sufficient to prevent cardiorespiratory dysfunction.
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