C6脑胶质细胞瘤的在体实验研究

目的　建立大鼠C6脑胶质瘤模型 ,寻找简易判定颅内肿瘤大小的可靠指标。方法　应用立体定向法 ,将 1%琼脂糖含 1× 10 6C6瘤细胞悬液 10 μl注入大鼠右脑尾状核并行一般观察和MRI检查。在接种后第 10、15、2 0、2 5天和自然死亡前 ,对大鼠做主动脉多聚甲醛灌注固定 ,对脑组织和肿瘤标本进行大体观察和HE染色。结果　 5 0只接种大鼠均有颅内肿瘤生长 (10 0 % ) ,远处和颅外转移率为 0 % - 4 %。结论　成功建立大鼠C6脑胶质瘤模型 ,接种后大鼠的生存时间可作为判定颅内肿瘤生长大小的指标。

Development of a rat C6 brain tumor model

Objective To establish rat C6 brain-tumor models and find a simple reliable index to judge tumor volume. Methods C6 cell suspension (10μl) containing 10g/L agarose and 1×106 cells was injected into the right caudate nucleus of the rat brain by a stereotaxic method. After implantation, rats were observed and given MRI scans. Rats were perfused with paraformaldehyde trans-aorta at the 10th, 15th, 20th and 25th day and before natural death. All brains, lungs, spinal cords and tumors were sectioned and inspected. Tumor-containing samples were prepared histologically by hematoxylin and eosin (HE) stains. Results Fifty implanted rats had 100% yield of intracerebral growth, with distant metastasis of 0% to 4%. Conclusion A rat C6 brain-tumor model was successfully established. Rat survival time is correlated with tumor volume and may be useful as an index of tumor size.z