相关实验视频
Updated: Sep 18, 2025
07:42
Live Cell Imaging during Mechanical Stretch
Published on: August 19, 2015
10.5K
CSE诱导的ER-线粒体交叉促进氧化应激并损害支气管收缩反应
Jorge Rodríguez-Pérez1,2, Rosa Andreu-Martínez1,2, Leila Pérez-Sánchez1,2
1Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
Antioxidants (Basel, Switzerland)
|June 26, 2025
概括
香烟烟雾提取物通过破坏平衡和细胞骨蛋白质,损害呼吸道光滑肌肉. 像mitoTEMPO这样的抗氧化剂显示出在慢性阻塞性肺病中减轻这些有害影响的潜力.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
背景情况:
- 慢性阻塞性肺病 (COPD) 是一个主要的全球健康问题,主要与吸烟有关.
- 众所周知,香烟烟雾提取物 (CSE) 损害肺动脉功能,并导致气道过敏反应.
- 通过CSE影响支气管平滑肌细胞收缩机制的确切机制尚未完全理解.
研究的目的:
- 研究CSE对人类支气管平滑肌细胞 (hBSMCs) 收缩装置的影响.
- 探索氧化应激和平衡在CSE诱导的细胞功能障碍中的作用.
- 评估抗氧化剂和ER通道抑制剂的治疗潜力.
主要方法:
- 在体外实验中使用人类支气管平滑肌细胞 (hBSMCs).
- 暴露于hBSMCs的香烟烟雾提取物 (CSE).
- 评估稳态,活性氧物种 (ROS),脂质过氧化,抗氧化防御,细胞骨蛋白水平和行为动态.
- 使用抗氧化药物 (mitoTEMPO,N-乙半氨酸) 和ER通道抑制剂 (2-APB) 的治疗.
- 测量CSE挑战后的支气管收缩反应.
主要成果:
- 暴露于CSE破坏了平衡,增加了ROS和脂质过氧化,并降低了hBSMC中的抗氧化防御.
- 通过减少细胞骨蛋白质和影响actin动态,CSE损害了收缩器官.
- 抗氧化剂 (mitoTEMPO,N-乙半氨酸) 和ER通道抑制 (2-APB) 减轻了CSE诱导的细胞损伤.
- 在CSE挑战后,MitoTEMPO部分恢复了支气管收缩功能.
结论:
- 由CSE引起的ROS和失调有助于细胞骨的破坏和呼吸道光滑肌的功能障碍.
- 向ROS和细胞内为管理吸烟相关的肺损伤提供了潜在的治疗策略.
- 抗氧化剂疗法可能是一种减轻香烟烟雾对肺功能有害影响的方法.
更多相关视频
相关概念视频
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
3.1K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
3.1K
01:46Electron Transport Chain: Complex I and II
15.1K
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...
15.1K
01:30The Electron Transport Chain
17.3K
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...
17.3K
01:45Mitochondrial Membranes
12.5K
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
12.5K
01:29Asthma-I: Introduction
2.8K
Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
2.8K
01:20Asthma: Pathogenesis and Management
618
Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
618