【摘要】 目的利用Mn₃[Co（CN）₆]₂@SiO₂对大鼠C6脑胶质瘤模型进行3T MR成像,研究肿瘤的生长规律。方法收集对数生长期鼠C6胶质瘤细胞,建立鼠C6脑胶质瘤模型,于细胞接种后第7 d行MR扫描,然后鼠尾静脉注射0.5 mL Mn₃[Co（CN）₆]₂@SiO₂,于注射后5 min、24 h再行MR扫描,扫描结束后取出肿瘤组织行HE染色。随机抽取脑内成功接种C6胶质瘤细胞的荷瘤鼠10只,接种后第7、9、11、13、15、17、19天行MR扫描,测量肿瘤体积,绘制出肿瘤生长曲线。结果成功建立了鼠C6脑胶质瘤模型,并且鼠尾静脉注射Mn₃[Co（CN）₆]₂@SiO₂后5 min、24 h肿瘤均强化,24 h肿瘤强化较前明显;MRI检测出胶质瘤大小与时间呈正相关关系（rs=0.9944,P=0.000）。结论应用Mn₃[Co（CN）₆]₂@SiO₂对鼠C6脑胶质瘤活体示踪MR成像,可以反映肿瘤的生物学特性,适用于肿瘤生长规律的观测。更多还原

【Abstract】 Objective To evaluate the imaging features of glioma and growth regulation of this nanocarrier with the aid of HE staining via using the rat C6 brain glioma model with Mn₃[Co（CN）₆]₂@ SiO₂ enhanced imaging at 3 T MRI. Methods The model of rat C6 brain glioma was built with glioma cells in the logarithmic growth stage. Seven days after cellimplantation,MR imaging was performed at 0,5 m,24 h after 0. 5 m L Mn₃[Co（ CN）₆]₂@SiO₂ was injected through the tail vein. Rat brain tissues were obtained and examined by HE staining. MR images of 10 rats with C₆ tumor glioma were performed on 7,9,11,13,15,17,19 days after glioma implantation. Then the images were transmitted to ADW 4. 4 workstation. The longest diameter and widest diameter of the tumor were measured and the tumor volume was calculated,and the growth regulations in animal models were evaluated. Results The models of rat C6 brain glioma models were successfully established,and the MR images with Mn₃[Co（ CN）₆]₂@SiO₂ were obtained. A positive correlation was detected between tumor size and time of glioma by MRI. Conclusion With the help of Mn₃[Co（ CN）₆]₂@SiO₂,MRI is able to trace the growth character of rat C6 glioma and evaluate the growth regulation in animal models.更多还原