使用心跳同步运动补偿来评估压力诱导的血管炎症的实时成像评估
Minseok A Jang1, Joon Woo Song2, Ryeong Hyun Kim2
1Department of Mechanical Engineering, KAIST (Korea Advanced Institute of Science and Technology), Daejeon, Korea (M.A.J., U.K., H.Y.).
Arteriosclerosis, thrombosis, and vascular biology
|October 10, 2024
概括
慢性压力加速动脉样硬化,因为它增加了动脉中髓状细胞的透. 先进的静脉内显微镜可视化了这些实时细胞变化,有助于心血管疾病研究.
科学领域:
- 神经免疫学 神经免疫学
- 心血管科学 心血管科学
- 医疗成像医学成像
背景情况:
- 慢性精神压力通过复杂的神经免疫路径加速动脉样硬化.
- 现有的成像技术缺乏实时可视化脉动动脉的血细胞动态.
- 需要先进的成像来了解压力诱导动脉样硬化的细胞机制.
研究的目的:
- 开发和应用先进的静脉内显微镜技术,实时可视化动脉中的血细胞动态.
- 在体内调查慢性克制压力对血管炎症和动脉样硬化进展的影响.
- 为了界定压力加速动脉样硬化背后的细胞机制.
主要方法:
- 在静脉内光学显微镜中实现了电调节的镜头,用于动态聚焦.
- 与心跳同步成像以补偿动脉运动.
- 在慢性束压力下的ApoE-/-小鼠和非压力对照中长度成像动脉.
主要成果:
- 在击败小鼠动脉中,实现了四倍的运动器件和25.2 Hz的时间分辨率的减少.
- 慢性压力显著增加了髓状细胞的透 (6.09倍),并在动脉中粘附的髓状细胞 (2.45倍).
- 组织学分析证实了压力诱导的斑块形成加速,增加了髓状细胞/巨细胞的积累,并减少了纤维状盖的厚度.
结论:
- 动态聚焦运动补偿静脉内显微镜可实现高分辨率,实时体内对动脉中血细胞动态的成像.
- 这种技术对于了解压力下心血管疾病的细胞机制至关重要.
- 这些发现强调了慢性压力对血管炎症和动脉样硬化的有害影响.
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