复方花刺参粘多糖对髂动脉内皮剥脱家兔内膜增生的影响及机制
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Effects of Stichopus Variegatus Compound on Cell Intima Hyperplasia of Rabbit Iliac Artery after Endothelium Denudation
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    摘要:

    为了观察复方花刺参粘多糖对动脉损伤家兔内膜增生的影响及其作用机制,将雄性新西兰大白兔37只随机分为正常组、模型组、花刺参组和辛伐他汀组,髂动脉损伤术后6周全部家兔处死,取受损动脉,HE染色观察动脉形态学改变并图像分析测量动脉内膜、中膜厚度,原位杂交检测血小板源生长因子、碱性成纤维细胞生长因子和转化生长因子β1的表达,免疫组织化学染色观察凋亡基因bcl 2和bax表达的改变。结果发现,与模型组相比,花刺参组和辛伐他汀组动脉内膜厚度及内膜中膜厚度比均明显减小(P<0 .0 1) ,血小板源生长因子及转化生长因子β1的表达明显降低(P<0 .0 5 ) ,bax表达明显升高(P<0 .0 5 ) ,但bcl 2表达无明显差异;花刺参组与辛伐他汀组之间各指标均无显著差异。结果提示,复方花刺参粘多糖可有效减轻家兔髂动脉损伤血管内膜厚度和管腔狭窄,其作用机理与抑制血管平滑肌细胞增殖和促进凋亡有关。

    Abstract:

    Aim To investigate the effects of Stichopus Variegatus Compound on cell intima hyperplasia of rabbit. Methods Thirty seven male New Zealand rabbits were allocated randomly into 4 group: normal control group, modle group, Stichopus group, Simvastatin group. All rabbits were killed after 6 weeks and iliac arteries were removed. With HE staining, we observed artery morphology alteration and measured the thickness of arterial intima and media. The expression of growth factor basic fibroblast growth factor (bFGF), transfer growth factor β 1 (TGF-β 1) and platelet derived growth factor (PDGF) were observed by hybridization in situ method. Apoptosis gene bcl-2 and bax were tested by immunohistochemistry staining. Results In comparison with modle group, the thickness of intima and ratio of intima to media and the expression of PDGF and TGF-β 1 in treatment group notably decreased (p<0.01, 0.01, 0.05, 0.05, respectively). The expression of bax in treatment group were significantly highter than that in modle group (p<0.05). There were no differences between Simvastatin group and Stichopus group. Conclusions Stichopus Variegatus Compound can effectively relieve stenosis of lumen of blood vessel, which may partly attributed to its function of inhibiting the hyperplasia and promoting the apoptosis of vascular smooth muscle cell (VSMC).

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朱宗涛,蔡生业,姚成芳,王丽,王华亭,张维东.复方花刺参粘多糖对髂动脉内皮剥脱家兔内膜增生的影响及机制[J].中国动脉硬化杂志,2004,12(1):43~46.

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  • 收稿日期:2003-06-09
  • 最后修改日期:2003-12-25
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