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A Doxorubicin-Induced Murine Model of Dilated Cardiomyopathy In Vivo
Published on: May 16, 2020
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的分子基础 心脏毒性:CdO纳米颗粒和可溶CdCl2暴露的室内特异性影响
Oksana Gerzen1, Alyona Tzybina1, Salavat Nabiev1
1Institute of Immunology and Physiology of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia.
概括
暴露于会损害心脏,影响心房肌蛋白功能和酸化. 纳米颗粒 (CdNP) 可能比化 (CdCl2) 更有毒,对右心室的影响不同.
科学领域:
- 环境毒理学环境毒理学
- 心血管生理学心血管生理学
- 分子生物学分子生物学
背景情况:
- (Cd) 是一种有毒的金属,与心脏病有关.
- 了解CD对不同心室的分子影响对于评估心血管风险至关重要.
研究的目的:
- 调查CdCl2和CdO纳米粒子 (CdNP) 暴露对大鼠心室内心脏肌酶功能和蛋白质表达的分子机制.
- 为了比较CdCl2和CdNP的心脏毒性,考虑剂量和特定的腔室效应.
主要方法:
- 鼠被暴露在CdCl2或CdNP中长达6周.
- 在体外运动性测试中评估了髓动力学,敏感性和强度.
- 凝电泳分析了髓重链和轻链异型以及MLC 2酸化.
主要成果:
- 无论是CdCl2还是CdNP,都降低了心房肌动力学和MLC 2酸化.
- CdCl2增加了右心室 (RV) 髓动力学,有利于α-MHC.
- CdNP降低了RV髓动力学,有利于β-MHC;左心室不受影响.
结论:
- CdNP可能比CdCl2更有心脏毒性,对RV功能有相反的影响.
- 对心脏功能的影响是室内特定的.
- 引起的心脏毒性背后的分子机制需要在疾病管理中对室内特定的考虑.
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