【目的】探讨缺氧诱导因子-1α（HIF-1α），血管内皮生长因子（VEGF）在喉癌中的表达及与临床病理特征的关系。【方法】采用免疫组化染色检测62例喉癌组织及46例癌旁组织中HIF-1α和VEGF的表达情况，并结合相关临床病理参数进行分析。...【目的】探讨缺氧诱导因子-1α（HIF-1α），血管内皮生长因子（VEGF）在喉癌中的表达及与临床病理特征的关系。【方法】采用免疫组化染色检测62例喉癌组织及46例癌旁组织中HIF-1α和VEGF的表达情况，并结合相关临床病理参数进行分析。【结果】HIF-1α和VEGF在喉癌中阳性表达率分别为67．74％和62．90％，均高于癌旁组织中的表达（ P ＜0．05），且两者表达呈显著正相关性（ P ＜0．05）。HIF-1α表达与TNM 分期和临床分期相关，VEGF表达则与临床分期和淋巴结转移相关（ P ＜0．05）。生存分析表明 HIF-1α、VEGF阳性和阴性表达患者无瘤生存率和总生存率差异显著（ P ＜0．05）。【结论】HIF-1α和VEGF在喉癌的发生发展中发挥着重要作用，且两者存在相互协同作用。HIF-1α可能通过上调VEGF的表达，促进肿瘤血管生成，并导致肿瘤浸润和淋巴结转移，两者可作为判断喉癌生物学行为和预后的重要指标。展开更多
Objective: To study the expression of dendritic cells in human renal cell carcinoma and explore the cause, so to reveal the mechanism of escaping immune surveillance in RCC. Methods: The expressions of CD83+DCS, CD1a+...Objective: To study the expression of dendritic cells in human renal cell carcinoma and explore the cause, so to reveal the mechanism of escaping immune surveillance in RCC. Methods: The expressions of CD83+DCS, CD1a+DCS,VEGF and TGF-β1 in tumoral, peritumoral and normal kidney tissues of RCC in 30 cases were detected by immunohistochemistry using streptavidin/peroxidese(SP) Results: CD83+DCS were mainly located in the peritumoral areas; whereas CD1a+DCS、were mainly retained within the cancer nests. The number of CD83+DCS was inversely correlated with the clinical stage(P<0.05); but there were no significant correlations between the number of CD1a+DCS、and the clinical stage(P>0.05). The expressions of CD83+DCS and CD1a+DCS have significant difference between the tumoral, peritumoral and normal kidney tissues(P<0.001). The expression of VEGF and TGF-β1 were significantly lower in samples with highly infiltrating CD83+DCS(P<0.05); Whereas CD1a+DCS were not (P>0.05). Conclusion: DC has the tendency to gathering in tumor, but because of the immunosuppressive cytokins, for example VEGF and TGF-β1, inhibits the maturation of DC, there are less mature TIDCS(CD83+TIDCS) in the tumoral tissues, they are mainly located in the peritumoral areas. This may contribute to the mechanism of escaping immune surveillance in RCC.展开更多
文摘【目的】探讨缺氧诱导因子-1α（HIF-1α），血管内皮生长因子（VEGF）在喉癌中的表达及与临床病理特征的关系。【方法】采用免疫组化染色检测62例喉癌组织及46例癌旁组织中HIF-1α和VEGF的表达情况，并结合相关临床病理参数进行分析。【结果】HIF-1α和VEGF在喉癌中阳性表达率分别为67．74％和62．90％，均高于癌旁组织中的表达（ P ＜0．05），且两者表达呈显著正相关性（ P ＜0．05）。HIF-1α表达与TNM 分期和临床分期相关，VEGF表达则与临床分期和淋巴结转移相关（ P ＜0．05）。生存分析表明 HIF-1α、VEGF阳性和阴性表达患者无瘤生存率和总生存率差异显著（ P ＜0．05）。【结论】HIF-1α和VEGF在喉癌的发生发展中发挥着重要作用，且两者存在相互协同作用。HIF-1α可能通过上调VEGF的表达，促进肿瘤血管生成，并导致肿瘤浸润和淋巴结转移，两者可作为判断喉癌生物学行为和预后的重要指标。
文摘Objective: To study the expression of dendritic cells in human renal cell carcinoma and explore the cause, so to reveal the mechanism of escaping immune surveillance in RCC. Methods: The expressions of CD83+DCS, CD1a+DCS,VEGF and TGF-β1 in tumoral, peritumoral and normal kidney tissues of RCC in 30 cases were detected by immunohistochemistry using streptavidin/peroxidese(SP) Results: CD83+DCS were mainly located in the peritumoral areas; whereas CD1a+DCS、were mainly retained within the cancer nests. The number of CD83+DCS was inversely correlated with the clinical stage(P<0.05); but there were no significant correlations between the number of CD1a+DCS、and the clinical stage(P>0.05). The expressions of CD83+DCS and CD1a+DCS have significant difference between the tumoral, peritumoral and normal kidney tissues(P<0.001). The expression of VEGF and TGF-β1 were significantly lower in samples with highly infiltrating CD83+DCS(P<0.05); Whereas CD1a+DCS were not (P>0.05). Conclusion: DC has the tendency to gathering in tumor, but because of the immunosuppressive cytokins, for example VEGF and TGF-β1, inhibits the maturation of DC, there are less mature TIDCS(CD83+TIDCS) in the tumoral tissues, they are mainly located in the peritumoral areas. This may contribute to the mechanism of escaping immune surveillance in RCC.
