相关实验视频
Updated: May 17, 2025

08:09
A Doxorubicin-induced Cardiomyopathy Model in Adult Zebrafish
Published on: June 7, 2018
9.7K
氧气疗法可以预防多克索鲁比诱导的心脏毒性
1Department of Graduate School, Qinghai University, Xining, Qinghai 810016, China.
Cardiology research and practice
|May 16, 2025
概括
微巴力氧疗法显著改善了心脏功能,并减少了用多克索鲁比 (DOX) 治疗的老鼠的纤维化,炎症和氧化应激. 这表明DOX在临床应用中的潜力.
科学领域:
- 心脏病学 心脏病学
- 药理学 药理学是指药理学的学科.
- 生物医学工程 生物医学工程
背景情况:
- 多克索鲁比 (DOX) 是一种强效的化疗剂,已知有心脏毒性副作用.
- 在DOX治疗期间保护心脏功能对于患者的治疗结果至关重要.
- 微氧疗法提出了一个潜在的策略,以减轻DOX诱导的心脏毒性.
研究的目的:
- 研究微巴里氧 (MO) 疗法在预防斯普拉格-道利 (SD) 鼠中多克索鲁比辛诱导的心脏毒性的疗效.
- 评估MO治疗对左心室功能,心脏纤维化,炎症和氧化应激的影响.
主要方法:
- 雄性SD大鼠被分为四组:对照组,DOX,DOX + 常规氧 (CO) 和DOX + MO.
- 使用心声回声学评估左心室功能.
- 组织病理学分析 (马森,HE染色) 评估了心脏纤维化.
- 通过qRT-PCR量化TGF-β1和原I的mRNA表达.
- 使用ELISA测量了炎症标志物 (IL-1β,IL-6,TNF-α) 和氧化应激标志物 (SOD,GSH-Px).
主要成果:
- 与DOX组相比,DOX+MO组在喷射分数 (EF),室间隔膜厚度 (IVS) 和左室后壁厚度 (LVPW) 中显著改善.
- MO疗法降低了心肌纤维化和TGF-β1和原I的表达.
- 炎症标志物 (TNF-α,IL-1β,IL-6) 在DOX+MO组显著降低.
- MO疗法保留了SOD和GSH-Px活动,抵消了DOX诱导的氧化应激.
- 在改善心脏功能和减少炎症和氧化应激方面,DOX+MO优于DOX+CO.
结论:
- 微巴力氧疗法有效地减轻了SD大鼠中多克索鲁比辛诱导的心脏毒性.
- MO疗法在保护左心室功能,减少心脏纤维化,炎症和氧化应激方面显示出显著的益处.
- 这些发现支持对使用MO疗法的进一步临床研究,以提高多克索鲁比治疗的安全性.
相关概念视频
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure
131
Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...
131
Heart Failure Drugs: Inotropic Agents
445
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
445
Electron Transport Chain: Complex I and II
9.6K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
9.6K
The Electron Transport Chain
15.8K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
15.8K
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
331
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
331
Oxygen Transport in the Blood
2.3K
Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
2.3K

