大鼠角膜碱烧伤后ILK和VEGF的表达与角膜新生血管的相关性研究
目的:研究大鼠角膜碱烧伤后整合素连接激酶(ILK)、血管内皮生长因子(VEGF)的表达及其与角膜新生血管(CNV)的相关性。方法:通过碱烧伤Sprague-Dawley(SD)大鼠角膜制备角膜新生血管动物模型,采用形态学方法观察碱烧伤后新生血管的生成,免疫组织化学方法检测ILK及VEGF在碱烧伤后不同时间点的表达情况。结果:ILK及VEGF在正常大鼠角膜上皮中仅有微弱表达,而在碱烧伤后各时间点的角膜上皮以及血管内皮中均有明显表达(P〈0.01)。碱烧伤后3~5d,可见二者阳性表达,且迅速增加;7~10d,二者表达达到高峰;14d以后二者表达逐渐减弱,与形态学观察CNV生长过程一致。即碱烧伤后3...
Saved in:
Published in | 国际眼科杂志 Vol. 12; no. 2; pp. 208 - 211 |
---|---|
Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
西安交通大学医学院第二附属医院眼科,中国陕西省西安市,710004
2012
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | 目的:研究大鼠角膜碱烧伤后整合素连接激酶(ILK)、血管内皮生长因子(VEGF)的表达及其与角膜新生血管(CNV)的相关性。方法:通过碱烧伤Sprague-Dawley(SD)大鼠角膜制备角膜新生血管动物模型,采用形态学方法观察碱烧伤后新生血管的生成,免疫组织化学方法检测ILK及VEGF在碱烧伤后不同时间点的表达情况。结果:ILK及VEGF在正常大鼠角膜上皮中仅有微弱表达,而在碱烧伤后各时间点的角膜上皮以及血管内皮中均有明显表达(P〈0.01)。碱烧伤后3~5d,可见二者阳性表达,且迅速增加;7~10d,二者表达达到高峰;14d以后二者表达逐渐减弱,与形态学观察CNV生长过程一致。即碱烧伤后3~5d新生血管生长迅速,7~10d生长达到高峰,14d以后血管开始逐渐减少退化。ILK及VEGF表达的变化均与CNV的变化呈正相关(ILK与CNV面积相关系数r=0.900,P〈0.01;VEGF与CNV面积相关系数r=0.878,P〈0.01),且二者之间也存在正相关性(r=0.926,P〈0.01)。结论:大鼠角膜碱烧伤后ILK及VEGF均有明显表达,二者作为重要的调控子共同参与了CNV的形成过程。 |
---|---|
Bibliography: | Peng-Fei Dai,Feng Wang,Yu-Ping Zheng,Yan-Long Quan,Jing-Jing Zhang Department of Ophthalmology,the Second Hospital of Medical College of Xi'an Jiaotong University,Xi'an 710004,Shaanxi Province,China 61-1419/R integrin-linked kinase; vascular endothelial growth factor; corneal neovascularization; alkaline burn; immunohistochemistry AIM:To investigate the relationship between corneal neovascularization(CNV) and the expression of integrin-linked kinase(ILK) and vascular endothelial growth factor(VEGF) in cornea of rats after alkaline burn.METHODS:CNV model was established by alkaline cauterization of the central cornea of Sprague-Dawley(SD) rats.At the different time points,morphologic changes in CNV were observed with slit-lamp microscope,and the expression of ILK and VEGF in cornea was detected by immunohistochemical method and computer image analysis.RESULTS:ILK and VEGF were lowly expressed in epithelium of cornea in the control group,and strongly expressed in epithelium,endothelium and the endothelium cells of |
ISSN: | 1672-5123 |
DOI: | 10.3969/j.issn.1672-5123.2012.02.05 |