黄蘑多糖对H22荷瘤小鼠肿瘤生长及其VEGF表达的影响

目的：观察黄蘑多糖对H22（小鼠肝癌细胞系）荷瘤小鼠的抑制肿瘤效果,并探讨该机制是否与提高机体免疫力和抑制肿瘤血管生成有关。方法：采用腋下接种癌细胞悬液建立荷瘤小鼠模型,造模成功24 h后灌胃给药,连续给药12 d后,处死动物,剥离瘤块、胸腺、脾脏并分别称重,计算抑瘤率、胸腺指数、脾指数;眼球取血计数有核细胞数;以冰冻切片免疫组织化学法检测各组瘤组织血管内皮生长因子（VEGF）表达程度。结果：黄蘑多糖各组的肿瘤重量均低于模型组,其中,中、高剂量组的抑瘤效果显著（P〈0.05）,且各项免疫指标显著高于环磷酰胺组（CTX组）和模型组（P〈0.01或P〈0.05）;黄蘑多糖各组的VEGF表达率显著低于模型组（P〈0.01）,黄蘑多糖低、中剂量组VEGF的表达与CTX组比较,差异有统计学意义（P〈0.05）,高剂量组与CTX组比较,差异无统计学意义（P〉0.05）。结论：黄蘑多糖对H22移植瘤的生长有一定抑制作用,可降低瘤组织中VEGF的表达,亦可作为生物反应调节剂,通过增强机体免疫功能等作用达到抗肿瘤的功效。

The influence of humangmo polysaccharides on tumor growth of H22 tumor-bearing mice and its VEGF expression

Objective: To observe the anti-tumor effect of huangmo polysaccharides on Hepatoma-22(H22) tumor-bearing mice,and to explore whether it was related with improving immunity and inhibiting tumor angiogenesis.Methods: The tumor-bearing mice model was established by inoculating H22 cell suspension axillarilly.24 hours later,all mice were given chemicals by oral administration once a day,for 12 days.Then mice were killed,and the tumors,spleens and thymuses were taken and weighed.The anti-tumor rate,the spleens a...