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兔颈动脉球囊损伤后动脉内膜、中膜厚度及面积的时相性变化 被引量:1

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摘要 目的观察兔颈动脉球囊损伤后动脉内膜、中膜厚度及面积的时相性变化。方法取50只白兔,行右侧颈总动脉球囊拉伤,术后2 h取2只行伊文氏蓝染色验证内皮剥脱损伤,余48只正常饲养至球囊损伤后3、7、14、28 d,每个时点各处死12只,取损伤动脉段(Model组)和对侧颈动脉段(Sham组)。另取10只白兔,正常饲养28 d后处死取右侧颈动脉(对照组),对三组取的动脉标本行光镜观察及图像分析。结果 Model组损伤3 d时内膜表面炎性细胞浸润,中膜血管平滑肌细胞(VSMC)增殖,中膜面积轻度增加;7 d时中膜VSMC增殖及弹力纤维增多,中膜厚度及面积增加明显,与对照组及Sham组相比,P均<0.05;14 d时内膜厚度及面积明显增加,而中膜厚度有所下降;28 d时内膜厚度及面积继续增厚达高峰,与对照组及Sham组相比,P均<0.05,中膜厚度较14 d时无明显统计学差异,内中膜厚度比及面积比在损伤后14 d明显增大,与对照组及Sham组相比,P均<0.05;28 d时内中膜厚度比及面积比达高峰,与对照组及Sham组相比,P均<0.05。结论兔颈总动脉球囊损伤后,动脉中膜VSMC先增殖,中膜厚度及面积明显增加,而后向内膜迁移,内膜厚度及面积明显增加。
出处 《山东医药》 CAS 北大核心 2015年第17期26-28,共3页 Shandong Medical Journal
基金 天津医科大学青年科学基金项目(2012KYQ04)
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