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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

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Confocal Imaging of Single Mitochondrial Superoxide Flashes in Intact Heart or In Vivo
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在单个线粒体中出现超氧化闪.

Wang Wang1, Huaqiang Fang, Linda Groom

  • 1Laboratories of Cardiovascular Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA. wangwang@umich.edu

Cell
|July 30, 2008
PubMed
概括
此摘要是机器生成的。

线粒体产生自发的"超氧化闪光",对细胞功能至关重要. 这些闪,与氧化应激相关,可以作为疾病的生物标志物.

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科学领域:

  • 线粒体生物学 线粒体生物学
  • 蜂信号传输是如何进行的
  • 氧化应激研究研究 氧化应激研究

背景情况:

  • 线粒体是通过电子运输链 (ETC) 产生反应性氧物种 (ROS) 的关键来源.
  • 低水平的ROS调节细胞功能,而高水平则诱导细胞死亡.

研究的目的:

  • 为了研究单个线粒体中自发超氧化物生成.
  • 描述这些事件的性质和触发因素.
  • 探索它们在细胞功能和疾病中的作用.

主要方法:

  • 使用了一种新的线粒体矩阵向超氧化物指示器.
  • 在各种细胞类型中观察到超氧化物生成.
  • 分析了心肌细胞复氧化后低氧化后心肌细胞复氧化期间的超氧化闪光活动.

主要成果:

  • 从单个线粒体中发现了自发的,全部或没有的"超氧化闪光".
  • 确定了暂时的线粒体透性过渡孔口作为触发因素.
  • 在心脏再氧化过程中观察到闪光活动增加,由腺抑制.

结论:

  • 超氧化物闪光是线粒体超氧化物生产的基本来源.
  • 这些闪光与生理和病理过程有关.
  • 超氧化物闪光显示出氧化应激相关疾病的生物标志物的潜力.