文档介绍：吲哚美辛抑制结肠癌移植瘤生长和微血管形成的实验研究
作者:王红梅;张桂英(中南大学湘雅医院消化科,湖南长沙 410078)
摘要:目的研究非甾体抗炎药吲哚美辛对人结肠癌HCT116移植瘤生长和微血管形成的影响。方法建立人结肠癌裸鼠皮下移植瘤模型。随机分组:治疗组喂服吲哚美辛(3 mg·kg-1·d-1),对照组给予相应体积溶剂(%二甲亚砜-生理盐水溶液)。4周后处死动物,采用免疫组化法检测肿瘤微血管密度(MVD)及肿瘤组织中血管内皮生长因子(VEGF)的表达,鼠抗人CD34标记微血管。结果治疗组与对照组皮下移植瘤体积分别为(±)mm3和(±)mm3(P<),治疗组肿瘤生长受到明显抑制;±±(P<),±±(P<),MVD与VEGF变化呈正相关(rs=,P<)。实验结束时未见明显毒性反应。结论吲哚美辛能通过抑制肿瘤微血管形成发挥抗瘤作用,其机制可能与抑制VEGF的表达有关。
关键词:吲哚美辛;结肠肿瘤;血管生成;微血管密度;血管内皮生长因子
中图分类号:;   文献标识码:A  文章编号:1000-2588(2004)02-0184-04
Experimental study of the inhibitory effect of indomethacin on the growth and angiogenesis of human colon cancer xenografts
WANG Hong-mei; ZHANG Gui-ying
Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha 410078, China
Abstract: Objective To evaluate the efficacy of nonsteroidal anti-inflammatory drug indomethacin on tumor growth and microvessel angiogenesis of human colon cancer xenografts in nude mice. Methods Human colorectal cancer HCT116 cells were inoculated subcutaneously into BALB/c-nu/nu mice. After daily treatment with oral indomethacin for 4 weeks (3 mg·kg
-1·d-1), the mice were sacrificed by cervical dislocation, and immunohistochemical staining was employed to determine microvessel density (MVD) and expression of vascular endothelial growth factors (VEGF) in the tumor tissues. Results Growth of HCT116 tumor was significantly suppressed by indomethacin. The tumor volume (mm3) was ± in the treated group versus ± in the control group (P<). The MVDs of the treated and control groups were ± and ± respectively (P<), and VEGF expressions were ± and ± (P<), respectively. MVD and VEGF expression in the treated tumor tissue declined noticeably pared with the controls. There was a positive correlation between the decrease of VEGF expression and that of MVD (rs=, P