赤芍防止高脂喂养兔颈总动脉球囊损伤术后血管狭窄的实验研究

目的 观察赤芍提取物对高脂喂养兔颈总动脉球囊损伤术后血管狭窄有无防止作用。方法 采用Clowes方法建立兔颈总动脉球囊损伤模型，并给予赤芍提取物。免疫组化染色测定兔颈动脉新生内膜成分、增殖细胞核抗原(proliferating cell nuclear antigen，PCNA)及巨噬细胞表达；血管特殊染色观察Ⅰ型胶原增生；图像分析系统测定新生内膜面积。结果赤芍提取物可减少PCNA阳性细胞数，抑制Ⅰ型胶原增生，减轻新生内膜形成。结论 赤芍对高脂喂养所致动脉粥样硬化兔颈总动脉球囊损伤术后再狭窄血管有显著防治作用。

Experimental Study on Preventive Effect of Radix Paeoniae Rubra to Restenosis after Carotid Balloon Injury in High Fat-diet Rabbits

OBJECTIVE: To observe the preventive effect of Radix Paeoniae Rubra (RPR) to restenosis after carotid balloon injury in rabbits. METHODS: The rabbit model of carotid balloon injury was established adopting Clowes method, and treated with extract of RPR. Component of new genesic intima and expression of proliferating cell nuclear antigen (PCNA) and macrophage was determined by immunochemical stain. The collagen of type I was detected by special staining for blood vessels and the area of new genesic intima was measured by image assay system. RESULTS: RPR could remarkably decreased the PCNA positive expression and inhibit the proliferation of collagen type I and reduce the generating of new intima. CONCLUSION: RPR has significant preventive effect on the restenosis after carotid ballon injury in high fat-diet induced atherosclerotic rabbits.