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肝细胞生长因子的基因转移减轻了心脏病发作后的心力衰竭
Vasant Jayasankar1, Y Joseph Woo, Lawrence T Bish
1Department of Cardiothoracic Surgery, University of Pennsylvania School of Medicine, Pliladelphia, PA 19104, USA.
Circulation
|September 13, 2003
概括
肝细胞生长因子 (HGF) 基因转移通过促进血管生长和减少细胞死亡,改善了老鼠心肌梗塞后的心脏功能. 这种疗法在治疗缺血性心力衰竭方面表现有前途.
科学领域:
- 心血管研究研究心血管研究
- 基因治疗 基因治疗
- 再生医学是一种再生医学.
背景情况:
- 缺血性心力衰竭仍然是死亡的重要原因,尽管在重血管化方面取得了进展.
- 标准治疗往往无法解决严重病例中持续的缺血症.
- 肝细胞生长因子 (HGF) 具有强大的血管新生和抗亡性质.
研究的目的:
- 评估HGF基因转移的功能和生化影响.
- 评估HGF在心脏病发作后心力衰竭的老鼠模型中的疗效.
主要方法:
- 易斯大鼠接受了冠状动脉绑定,随后注射了编码HGF的腺病毒或无病毒控制的肌心内注射.
- 血液动力学功能的评估是使用压力-体积导电性导管.
- 用组织学和分子技术评估了心肌几何,血管生成和亡.
主要成果:
- HGF基因转移显著保留左心室 (LV) 收缩功能和改善LV几何.
- 在接受HGF治疗的动物中观察到增强的血管生成,通过免疫组织化学和微观测试证实了这一点.
- 在HGF组中,心肌亡的显著降低和抗亡蛋白 (Bcl-2,Bcl-xL) 的表达增加.
结论:
- 在心肌梗塞后,HGF基因转移有效地保持心肌功能和几何.
- 该疗法刺激血管新生并减少细胞亡,为缺血性心力衰竭提供了潜在的治疗方法.
- HGF基因转移可以作为常规复血管化技术的辅助或替代.
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