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相关概念视频

Atherosclerosis I: Introduction01:30

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Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
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Induction of Accelerated Atherosclerosis in Mice: The "Wire-Injury" Model
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在高胆固醇血症小鼠中延迟动脉发生.

Daniela Tirziu1, Karen L Moodie, Zhen W Zhuang

  • 1Angiogenesis Research Center, Department of Medicine, Dartmouth Medical School, Lebanon, NH, USA.

Circulation
|October 19, 2005
PubMed
概括
此摘要是机器生成的。

高胆固醇血症通过减少早期免疫细胞的到来和损害血管修复来延缓动脉生长 (动脉生成). 这阻碍了受伤后的康复,即使有增长因子治疗.

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科学领域:

  • 心血管生物学 心血管生物学
  • 血管生物学 血管生物学
  • 再生医学是一种再生医学.

背景情况:

  • 众所周知,高胆固醇血症会阻碍血管生成 (新血管形成).
  • 它对动脉形成 (动脉重塑和生长) 的影响仍然不太清楚.

研究的目的:

  • 为了研究高胆固醇血症对动脉形成的影响.
  • 为了评估高胆固醇血症小鼠的动脉生长.

主要方法:

  • 超胆固醇低密度脂蛋白受体 ((-/-) /ApoB-48(-/-) (HCE) 的小鼠和对照小鼠接受了大腿动脉绑定.
  • 用微计算机断层扫描,MRI和激光多普勒成像来评估血管生长和四肢 perfusion.
  • 在Ad-PR39.9治疗后进行基因表达分析.

主要成果:

  • 与对照组相比,未经治疗的HCE小鼠显示肢体输液恢复显著延迟.
  • 增长因子治疗 (Ad-PR39) 在HCE小鼠中显示出延迟和受损的动脉生成反应.
  • 在HCE小鼠中延迟动脉生成与早期单细胞/巨细胞透率的减少和基因表达的改变相关.

结论:

  • 高胆固醇血症显著延迟了原生动脉发生.
  • 这种延迟归因于早期单细胞/巨细胞流入减少.
  • 高胆固醇血症会影响动脉对增长因子治疗的生长反应.