联合转染p21基因和反义c-fos核酸对兔自体移植静脉内膜增生的影响

目的：探讨联合转染p21基因和反义c-fos核酸对兔自体移植静脉内膜增生的影响，探索一种理想的血管再狭窄的疗法。方法：选择20只新西兰家兔，实验组、对照组各10只，均行自体颈外静脉、颈总动脉移植手术，实验组行腺病毒介导的p21 cDNA溶液浸泡和反义c-fos寡聚核苷酸凝胶涂布；对照组仅行空载腺病毒溶液浸泡和凝胶涂布。术后2周取出移植血管，分别行病理学、免疫组织化学检测移植血管内膜厚度（IT）、内膜平滑肌细胞（VSMC）数及PCNA阳性表达情况。结果：实验组移植血管IT、管腔狭窄度及VSMC数均较对照组减少，增殖细胞核抗原（PCNA）阳性表达情况亦较对照组明显减少。结论：联合转染p21基因和反义c-fos核酸可有效地抑制移植静脉内膜的增生。

Effects of c-fos antisense oligoneuleotide and p21 genetic transfection on the intimal proliferation of venous autografts in rabbits

AIM: To investigate the effects of c-fos antisense oligoneuleotide and p21 genetic transfection on the intimal proliferation of venous autografts. METHODS: The external jugule veins were autografted into common carotid arteries in the same side in 20 New Zealand rabbits, which were divided evenly into experimental and control group randomly. The transplanted veins of experimental group were immersed in the adenovirus - mediated p21 gene solution for 15 minutes just before anastomosis and coated with c-fos antisense oligoneucleotide glue gel just after anastomosis, while the control was only treated with empty vector. The transplanted vascular sample were taken at 2 weeks after operation. The intimal thickness (IT), degree of restenosis (DR), expression of proliferating cell nuclear antigen (PCNA), quantity of VSMC were determined by immunohischemistry. RESULTS: The IT , DR and expression of PCNA, VSMC were decreased, compared to control group. CONCLUSION: Transfection of c-fos antisense oligoneuleotide and p21 gene inhibits the intimal proliferation of venous antografs.