Objective To investigate the effect on the structure of reestablished cartilage in vitro and CD44 expression on chondrocytes and compare the inducing effect on the reestablished cartilage in vitro between cor...Objective To investigate the effect on the structure of reestablished cartilage in vitro and CD44 expression on chondrocytes and compare the inducing effect on the reestablished cartilage in vitro between cortical bone matrix gelatin and cancellous bone matrix gelatin. Methods To plant human fetal chondrocytes on the BMG, the damage of the cultured chondrocytes was observed by the optical microscope (HE staining). The immunohistochemistry of CD44 was quantitative analysis by the image collection and analysis system. Results With the increasing concentration of T 2 toxin, the damage of chondroytes was more and more evident and CD44 expression was lowered. After adding selenium, the damage was relieved and CD44 expression increased. The density of chondrocytes on the cortical bone matrix gelatin was much higher than that on the cancellous bone matrix gelatin. Conclusion T 2 toxin can lower the CD44 expression on the chondrocytes and adding selenium can relieve the damage caused by T 2toxin and increased CD44 expression. The inducing effect on reestablished cartilage in vitro of cortical bone matrix gelatin was much higher than that of cancellous bone matrix gelatin.展开更多
目的观察补肾中药淫羊藿对哮喘大鼠肺组织调节激活正常T细胞表达和分泌因子(regulated on activation,normal T cell expressed and secreted,RANTES)、单核细胞趋化蛋白3(monocyte chemotactic pro- tein-3,MCP-3)表达的影响,进一步探...目的观察补肾中药淫羊藿对哮喘大鼠肺组织调节激活正常T细胞表达和分泌因子(regulated on activation,normal T cell expressed and secreted,RANTES)、单核细胞趋化蛋白3(monocyte chemotactic pro- tein-3,MCP-3)表达的影响,进一步探讨淫羊藿防治哮喘的作用机制。方法将挪威大鼠随机分成6组:正常组、模型组、阳性药组(给地塞米松)、淫羊藿低、中、高剂量组(分别给淫羊藿0.125、0.5、2.0 g/mL)。用Re- al-time PCR法检测肺组织RANTES、MCP-3 mRNA的表达,EUSA法检测各组血清中肿瘤坏死因子α(TNF-α)、白细胞介素(IL)4、5的含量。结果与模型组比较,各用药组大鼠肺组织RANTEs、MCP-3 mRNA的表达下调(P<0.05或P<0.01),TNF-α水平均明显降低(P=0.000),阳性药组和淫羊藿中、高剂量组IL-4水平均明显下降(P=0.007,P=0.047,P=0.033),IL-5水平仅见阳性药组和淫羊藿高剂量组显著下降(P= 0.003,P=0.005)。结论哮喘发作期给予淫羊藿可减轻哮喘气道炎症,并且其与抑制肺组织RANTES、MCP-3表达有关。展开更多
文摘Objective To investigate the effect on the structure of reestablished cartilage in vitro and CD44 expression on chondrocytes and compare the inducing effect on the reestablished cartilage in vitro between cortical bone matrix gelatin and cancellous bone matrix gelatin. Methods To plant human fetal chondrocytes on the BMG, the damage of the cultured chondrocytes was observed by the optical microscope (HE staining). The immunohistochemistry of CD44 was quantitative analysis by the image collection and analysis system. Results With the increasing concentration of T 2 toxin, the damage of chondroytes was more and more evident and CD44 expression was lowered. After adding selenium, the damage was relieved and CD44 expression increased. The density of chondrocytes on the cortical bone matrix gelatin was much higher than that on the cancellous bone matrix gelatin. Conclusion T 2 toxin can lower the CD44 expression on the chondrocytes and adding selenium can relieve the damage caused by T 2toxin and increased CD44 expression. The inducing effect on reestablished cartilage in vitro of cortical bone matrix gelatin was much higher than that of cancellous bone matrix gelatin.
