相关实验视频
Updated: Jun 26, 2026

Analysis of Oxidative Stress in Zebrafish Embryos
Published on: July 7, 2014
细胞表面雌激素受体调解人体内皮质中依赖的氧化释放
G B Stefano1, V Prevot, J C Beauvillain
1Neuroscience Research Institute, State University of New York (SUNY) at Old Westbury, NY 11568-0210, USA.
雌激素迅速促进人类内皮细胞的氧化 (NO) 释放. 这通过细胞表面的雌激素受体发生,激活细胞内,并可能解释雌激素.
科学领域:
- 内分泌学 在内分泌学.
- 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:
- 雌激素替代疗法可以减少绝经后妇女的心血管事件.
- 雌激素对心血管的益处背后的精确机制尚未完全理解.
- 氧化 (NO) 是一种关键的内皮衍生因子,可以保护血管.
研究的目的:
- 研究生理性雌激素水平对人类内皮细胞NO释放的急性影响.
- 为了确定雌激素是否通过细胞表面受体刺激NO的释放.
- 为了阐明参与雌激素介导的NO释放的信号通路.
主要方法:
- 实时测量NO释放使用电压计探针.
- 人体内胸动脉和动脉内皮细胞对17β-雌二醇的暴露.
- 使用与牛血清白蛋白结合的17β-雌激醇来评估受体参与.
- 使用塔莫西芬来抑制雌激素受体.
- 用双排放微计测量细胞内的瞬态物质.
主要成果:
- 17β-雌二醇以度依赖的方式快速刺激内皮细胞的NO释放.
- 有证据表明,雌激素通过细胞表面受体起作用,正如结合性雌激素和他莫西芬对抗作用所示.
- 雌激素刺激的NO释放取决于细胞内的初始上升.
结论:
- 生理性雌激素剂量急剧刺激人体内皮细胞的氧化 (NO) 释放.
- 这种刺激是由细胞表面的雌激素受体介导的.
- 该途径涉及细胞内信号的激活.
更多相关视频
10:05Stimulation of Stem Cell Niches and Tissue Regeneration in Mouse Skin by Switchable Protoporphyrin IX-Dependent Photogeneration of Reactive Oxygen Species In Situ
Published on: May 8, 2020
07:16Resin-Assisted Capture Coupled with Isobaric Tandem Mass Tag Labeling for Multiplexed Quantification of Protein Thiol Oxidation
Published on: June 21, 2021
相关概念视频
Peroxisomes
The Extracellular Matrix
Peroxisomes
The Extracellular Matrix
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
Renewal of Skin Epidermal Stem Cells
Peroxisomes