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Tanshinone ⅡA inhibits angiogenesis in subcutaneous colorectal cancer xenografts in mice
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 31
- DOI:
- 10.3969/j.issn.1009-3079.2009.31.004
- Key Word:
- 丹参酮ⅡA;血管新生;小鼠;结肠癌;血管内皮生长因子
Abstract： 目的:探讨中药丹参活性成分TanⅡA对肠癌小鼠皮下移植瘤微血管生成的抑制作用.方法:通过腋下接种小鼠C26肠癌细胞,建立小鼠结肠癌移植瘤模型,随机分为:模型组、TanⅡA低[0.5 m/(kg·d)]、中[1 mg/kg·d)]、高[2 mg/(kg·d)]剂量组、5-氟脲嘧啶[1 mg/kg·d)]组,经尾静脉分别给予生理盐水、不同浓度的TanⅡA及5-氟脲嘧啶.每天1次,给药1 wk.给药7 d后摘除眼球取血,剥离瘤体,测量大小及质量.免疫组织化学法检测MVD,HE染色检测肿瘤组织坏死情况,ELISA法检测小鼠血清VEGF的表达.结果:TanⅡA低、中、高剂量的肿瘤质量抑制率分别为:45.8%、60.3%及84.5%,肿瘤体积抑制率为:50.5%、60.7%及84.2%;模型组与低剂量组肿瘤组织以轻度坏死为主,MVD值分别为:86.5±14.6与73.5±19.8,中、高剂量组则以中、重度坏死为主,MVD值分别为:48.6±15.2与19.4±6.6;模型组血清VEGF的浓度显著锅于空白组,TanⅡA低、中、高剂量组VEGF抑制率分别为:15.8%、34.2%及74.8%.结论:TanⅡA能够抑制小鼠肠癌微血管生成,并对肠癌的生长有明显抑制作用,其抗肠癌作用与抑制VEGF、MVD有关.
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