中国实验动物学报2012，Vol.20Issue(1)：1-4,4.DOI:10.3969/j.issn.1005-4847.2012.01.001
应用活体荧光技术观察LDLR-/-小鼠血管损伤后初期病变形成的动态变化
Fluorescence microscopic observation of the dynamics of early lesion formation after vascular injury in LDLR -/- mice in vivo
摘要
Abstract
Objective To study the early dynamics of lesion formation after vascular injury in LDLR-/- mice by in vivo fluorescence microscopy. Methods One hundred and twelve male LDLR~ ~ mice (18-22 weeks of age) were randomly divided into 14 groups (8 mice in each group). The mice were subjected to bone marrow cell transplantation from GFP+/LDLR-/- mice. After 4 weeks, a polyethylene cuff was implanted around the right femoral artery to induce vascular injury. The lesion formation was observed on the injured femoral artery from 1 to 14 days after vascular injury. Results At the 1st day after cuff placement, a markedly large number of GFP positive cells were clearly observed in high-speed blood flow. At the 3rd day after the vascular injury, GFP positive cells accumulated in the inner vascular wall and formed punctate lesions. At the 6th day after the vascular injury, GFP positive cells in the inner vascular wall formed irregular flakes, and a small amount of the adventitia tissue proliferated, corresponding to the inner lesion area. At the 9th day after the vascular injury, the adventitia tissue was obviously proliferated and a large number of GFP positive cells embeded. The vasa vasorum were clearly seen running in the adventitial layer. At the 14th day after the vascular injury, the adventitia tissue proliferated considerably with largely GFP positive cells and could not be observed in the lesion through adventitia. After stripping the outer tissue of vessel wall, the fluorescent lesion formed by GFP positive cells was clearly lining in the intima area. Conclusions The results of our study demonstrate that the vascular remodeling lesion in the early stage in LDLR-/-mice has a trend of " inside out". The dynamics of lesions has a close correlation with bone marrow-derived cells that circulating in the blood flow. There is distinct influence of the vascular lesions on extravascular fibrosis.关键词
活体荧光/低密度脂蛋白受体敲除小鼠/血管损伤Key words
In vivo fluorescence/low-density lipoprotein receptor knockout mice/vascular injury分类
生物科学引用本文复制引用
高岱岳,高蒙蒙,秦蒙,王丽丽,吕新勇,王振中,萧伟,刘树民,许扬..应用活体荧光技术观察LDLR-/-小鼠血管损伤后初期病变形成的动态变化[J].中国实验动物学报,2012,20(1):1-4,4.基金项目
国家自然科学基金(2009-2011年度,课题编号:30870937). （2009-2011年度,课题编号:30870937）
