角质细胞生长因子通过膜扩散增强了肺切除术后的肺生长
Aditya K Kaza1, Irving L Kron, Shari M Leuwerke
1Department of Surgery, Division of Thoracic and Cardiovascular Surgery, University of Virginia Health System, Charlottesville, Va 22908-1359, USA.
Circulation
|October 2, 2002
概括
在成年大鼠肺切除术后,角质细胞生长因子 (KGF) 显著增强了补偿性肺生长. 这项研究提供了第一个证据,即KGF可以在成熟的肺部诱导新的气膜形成.
科学领域:
- 肺部病理学 肺部病理学
- 再生医学是一种再生医学.
- 细胞生物学 细胞生物学
背景情况:
- 角质细胞生长因子 (KGF) 对肺细胞增殖和肺部发育至关重要.
- 肺切除术后的补偿性肺生长对于呼吸功能至关重要.
- 外源性KGF在增强肺切除术后肺再生中的作用尚待充分阐明.
研究的目的:
- 在成年大鼠肺切除术后,研究外源性KGF对补偿性肺生长的影响.
- 为了确定KGF的管理是否促进膜增殖和新的膜形成.
主要方法:
- 成年斯普拉格-道利大鼠接受了左侧肺切除术 (P组),假胸切除术 (S组) 或用KGF给药的肺切除术 (PK组).
- 测量了肺重量指数 (LWI),肺体积指数 (LVI) 和细胞增殖指数 (CPI).
- 形态测量分析评估了气膜表面密度 (Sv) 和呼吸总体 (TVvr).
主要成果:
- 肺切除术显著增加了LWI,LVI和CPI.
- 与单独的肺切除术相比,KGF的使用进一步增强了LWI,LVI和CPI.
- KGF显著增加了TVvr和Sv,表明新的气泡膜形成,这种效应在假手术动物中没有发现.
结论:
- 外源KGF在成年大鼠的肺切除术后显著增强了补偿性肺生长.
- 在成熟的肺部中,KGF促进了新的膜形成,由膜表面密度和呼吸总体体积的增加证明.
- 这项研究提供了KGF诱导的成熟哺乳动物肺部膜新生的第一个证据.
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