Objective:To explore the effect bone marrow mononuclear cells (BM-MNCs) transplantion on the ulcerative colitis in rats.Methods:BM-MNCs labeled with DAPI were transplanted into UC rat (model group) through caudal vein,the rats injected with the same amount of PBS were used as the control group.The pathological changes of colon tissues was observed by light microscope;and the planting and distributed conditions of the BM-MNCs labeled DAPI in colon tissues were detected by fluorescence microscope,the expressions of CK19 and CD34 in BM-MNCs were detected by immunofluorescence.Results:The neogenetic mucosal epithelium and gland submucous neogenetic and ripe granulation tissue were observed in the transplanting group,which were obviously better than those of the control group;DAPI labeled BM-MNCs cells can express CD34 and CK19.Conclusions:BM-MNCs can transfer and plant into the injured colon tissues and differentiate into the vascular endothelial cell and mucosal epithelial cell.

目的 探讨骨髓单核细胞(BM-MNCs)移植对溃疡性结肠炎(UC)的修复作用.方法 将标记的异体大鼠BM-MNCs移植到大鼠UC模型内,观察大鼠的精神、进食、活动、大便情况及体重变化,结肠大体形态,黏膜组织损伤的情况.结果 移植7d后大鼠的一般情况、体重、排便情况明显优于磷酸盐缓冲液(PBS)组;大鼠结肠组织大体及光镜观察,移植后3 d及7 d,移植组与PBS组结肠大体标本无明显差别,移植后14 d,移植组结肠大体标本可见黏膜充血、水肿、糜烂、无明显溃疡;荧光显微镜观察,移植14 d的大鼠结肠组织中均可观察到DAPI标记的BM-MNCs细胞.结论 BM-MNCs移植可以促进大鼠UC模型损伤结肠组织的修复.

目的:检测结肠癌组织中血管内皮生长因子(VEGF)的表达情况和血清中胰岛素样生长因子-1 (IGF-1)的含量.阐述血管内皮生长因子(VEGF)和胰岛素样生长因子-1 (IGF-1)在结肠癌中相关性.探讨血管内皮生长因子(VEGF)和胰岛素样生长因子-1 (IGF-1)在结肠癌中的临床意义.方法:血管内皮生长因子(VEGF)检测采用免疫组化方法,对32例结肠癌组织血管内皮生长因子(VEGF)的表达进行检测,对照正常12例非肿瘤外伤患者.胰岛素样生长因子-1 (IGF-1)检测采用双位点免疫放射测定方法(IRMA),结肠癌Dukes分期(A期8例,B期7例,C期9例,D期8例)32例做术前术后两组血清IGF-1检测,与正常12例非肿瘤外伤患者对照.结果:VEGF在结肠癌患者的组织中的表达率高于对照组,有统计学意义(P＜0.01).结肠癌患者术前、术后及对照组合量显示,术前血清中IGF-1含量明显高于术后及对照组(P＜0.05).依据结肠癌Dukes分期VEGF癌组织的阳性表达与IGF-1在结肠癌血清水平,有统计学意义(P＜0.05).结论:VEGF的表达与结肠癌Dukes分期有相关性.结肠癌患者血清IGF-1水平与结肠癌Dukes分期具有正相关性,组织VEGF的阳性表达增高,结肠癌患者IGF-1含量增加.说明IGF-1和VEGF共同参与了结肠癌的发生发展过程,而且这两种因子的联合检测对发现结肠癌较单一检测更有意义.