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广西地处我国南疆,为多民族地区。广西矿产资源和旅游资源丰富且有沿海,沿边、沿江等区位优势:具有构建中国与东盟国家之间海陆空最便捷通道的基础条件,广西与广东、湖南、贵州、云南4省相连,是中国西南最便捷的出海通道,又是我国西南与东南沿海间的大通道,具有”承东启西”的重要作用。广西经济发展潜力巨大,必将对铁路运输提出新的要求。 相似文献
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Objective To determine the role of interleukin-8 (IL-8) produced by tumor induced fibroblasts in the development of cutaneous melanoma. Methods B16 melanoma cells induced L929 fibroblasts phenotype was transdifferentiated to myofibroblasts (MF) by co-culture in vitro. MF was monitored by morphology and immunophenotype for a-SMA. The level of IL-8 was detected by ELISA. The effect on B16 cell proliferation rate was estimated using MIT method in vitro. Melanoma implanting model was constructed in C57 mice. Results L929 MF phenotype could be modulated by B16 melanoma cells-derived transforming growth factor-β1 (TGF-β1) and elevated the levels of IL-8. L929 MF did not influence the B16 melanoma cells viability in vitro, but shortened the time of tumor formation and increased the incidence rates of tumors in C57 implanting model mice. Conclusion Fibroblasts can be activated by tumor cells and produce IL-8, which acts as an inflammatory cytokine promoting the development of cutaneous melanoma. 相似文献
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THE EFFECT OF Ge-132 ON ULTRASTRUCTURE OF CULTURED MELANOCYTES 总被引:1,自引:0,他引:1
Ge- 1 32 (Rapagermanium ) has many func-tions,such as advancing immunity,reducing theconcentration of blood cholestrol and triglycerides,inhibiting virus duplication and so on.Furtherstudies found that Ge- 1 32 also could prohibit thegrowth of melanocytes.In the presence of Ge- 1 32Melanocyte s growth becomes slowly and the con-tentof melanin goes down,thusitcould be used forthe treatmentof pigmented diseases.In the presentstudy,Ge- 1 32 was used to culture melanocytes toobserve the changes … 相似文献
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Vitiligoisacommonskindiseaesmanifestedby depigmentedwhitepatchessurroundedbyanormal orahyperpigmentedborder,causedbymelanocyte selectivilydestroy[1].Melanocyteishappenedby theneuralcrest,whichwouldmigratedtobasallay erofepidermisandhairfolliculuspilibywa… 相似文献
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目的 探讨依曲替酸治疗寻常型银屑病(psoriatic vulgaris, PV)的作用机制.方法 观察依曲替酸对30例PV患者的临床疗效,并用原位杂交技术对患者治疗前后皮损中Th1型细胞因子干扰素-γ(IFN-γ)和Th2型细胞因子(IL-4)mRNA进行检测.结果 依曲替酸能改善PV患者病情,有效率76.67%.IFN-γ、IL-4 mRNA主要在真皮表皮交界处的淋巴细胞胞质中表达,IFN-γ mRNA的表达治疗前(45.61±9.96)明显高于正常对照(4.40±1.20,P<0.01),治疗后(16.82±7.20)明显下降(P<0.01).IL-4 mRNA表达无显著变化.结论 依曲替酸治疗PV的作用机制可能与其抑制皮肤中IFN-γ mRNA的表达及调节Th平衡有关. 相似文献
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目的 研究EphB4在肺癌组织中的表达和意义。方法 采用免疫组化SP法检测 5 0例肺癌及 2 0例癌旁组织中EphB4的表达水平。结果 EphB4在肺癌组织中的表达水平高于癌旁组织 (P <0 .0 1) ,EphB4的表达与肺癌的分级呈正相关 (P <0 .0 5 ) ,与临床分期及淋巴结转移之间无相关性 (P >0 .0 5 )。结论 EphB4可能在肺癌的发生中起一定的作用 相似文献
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目的 构建用于防治单纯疱疹的核酸疫苗并观察其免疫效果。方法 用PCR反应 ,从HSV 1F株基因组DNA中扩增出 gD蛋白的全部编码序列 ,将其插入 pcDNA 3 1 (+)的PCMV下游 ,构建HSVgD核酸疫苗 ,并用酶切分析和测序鉴定 ;通过中和试验、ELISA方法和攻击试验检测用 pLy D三次肌肉接种小鼠的免疫效果。结果 经鉴定证实了HSV gD核酸疫苗 pLy D的构建 ;实验小鼠产生了对HSV 1特异性的抗体 (抗体滴度 :ELISA法 1∶2 0 3,中和试验法 1∶37) ,并经受了HSV 1病毒的攻击 (存活率 :70 % )。结论 成功构建出了HSV gD核酸疫苗pLy D ,用其接种小鼠可以诱导产生特异性免疫反应 ,并具有良好的保护作用。 相似文献