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中国临床药理学与治疗学 ›› 2013, Vol. 18 ›› Issue (2): 156-160.

• 基础研究 • 上一篇    下一篇

马齿苋总黄酮对血小板源性生长因子致家兔血管平滑肌细胞增殖的抑制作用

卢新华1, 黄煌1, 谭斌1, 邓华菲2, 王桂霞1, 左克强3, 李坚2, 何军山4   

  1. 1湘南学院基础医学部药理教研室,2病理生理教研室,3生物化学教研室,4预防医学系预防教研室,郴州 423000,湖南
  • 收稿日期:2012-10-10 修回日期:2012-10-10 发布日期:2013-02-28
  • 作者简介:卢新华,男,学士,教授,研究方向:天然药物与心脑血管疾病研究。 Tel: 13873508421 E-mail: xnjnlxh@126.com
  • 基金资助:
    湖南省自然科学基金项目(06JJ50064); 湖南省教育厅十二·五重点建设学科基金资助项目编号; 湖南省心脑血管天然药物研究重点实验室基金项目资助

Effects of portulaca total flavone on proliferation of vascular smoothmuscle stimulated by PDGF-BB

LU Xin-hua1, HUANG Huang1, TANG Bing1, DENG Hua-fei2, WANG Gui-xia1, ZUO Ke-qiang3, LI Jian2, HE Jun-shan4   

  1. 1Teaching and Research Section of Pharmacology;
    2Teaching and Tesearch Section of Pathologys and Physiology;
    3Teaching and Research Section of Biochemistry of Department of Basic Medicine;
    4Teaching and Research Section of Prevent of Department of Prevent Medicine Xiangnan University, Chenzhou 423000,Hunan, China
  • Received:2012-10-10 Revised:2012-10-10 Published:2013-02-28

摘要: 目的: 研究马齿苋总黄酮(Portulaca total flavone,PTF)对血小板源性生长因子-BB型(PDGF-BB)致血管平滑肌细胞(Vascular smoothmuscle cell,VSMC)增殖的影响并探讨其机制。方法: 采用组织贴壁法培养家兔胸主动脉血管平滑肌细胞,细胞计数法观察PTF(8、24、72 mg/L)对PDGF-BB所致的VSMC增殖作用的影响;氚-胸腺嘧啶核苷(3H-TdR)掺入方法测定VSMC DNA的合成;流式细胞仪分析增殖细胞周期,荧光分光光度计测定VSMC内 [Ca2+]i结果: PTF以浓度依赖方式抑制PDGF-BB诱导的VSMC增殖、DNA合成,血管平滑肌细胞处于G1/G0 期的细胞数增多,而G2/S期的细胞数显著减少(P<0.01);能抑制高K+诱导的VSMC内[Ca2+]i升高(P<0.01)。结论: PTF可明显抑制PDGF-BB诱导的VSMC增殖,其作用机制可能与其降低VSMC内高钙浓度[Ca2+]i有关。

关键词: 马齿苋总黄酮, 血管平滑肌细胞, 细胞增殖, 血小板源性生长因子-BB型, 氚-胸腺嘧啶核苷, 细胞周期, 细胞内钙

Abstract: AIM: To study the effects of portulaca total flavone (PTF) on proliferation induced by PDGF-BB of rabbit aortic smooth muscle cells(VSMCs)and explore its mechanisms. METHODS: The VSMCs of cultured organization-adherence was induced to proliferate by PDGF-BB, and effects of PTF on VSMCs was tested by cell counting method and 3H-thymidine (3H-TdR) incorporation test; The effect of PTF on cell proliferative cycle of VSMC was observed by flow cytomytry technique;The intra-cellular calcium concentration was investigated by fluorimetry.RESULTS: PTF inhibited the proliferation of VSMCs induced by PDGF-BB in a dose dependent manner,and DNA symthesis,the cells numbers of G1/G0 phase were increased and that of G2/S phase were decreased markedly(P<0.01).CONCLUSION: Proliferation of VSMCs induced by PDGF-BB can be inhibited by PTF.The mechanisms may be related with diminished VSMCs [Ca2+]i.

Key words: Portulaca total flavone, Vascular smooth muscle cslls, Cell proliferation, PDGF-BB, 3H-TdR, Cell cycle, [ Ca2+] i

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