食管癌组织中血管内皮生长因子的表达对树突状细胞的影响

目的：研究食管癌组织中血管内皮生长因子（VEGF）的表达对树突状细胞（DC）的影响。方法：对94例食管癌组织采用辣根过氧化物酶（HRP）标记的链霉亲和素-生物素法（LSAB）,分别检测VEGF、S100蛋白的表达水平,并分析VEGF与S100^＋ DC的相关性。结果：食管癌组织中VEGF的表达率为74.46%（70/94）,VEGF的表达与患者的临床分期及癌组织的分化呈正相关（r=0.864,0.803,P〈0.05）。临床分期越晚,病癌组织的分化越低,癌组织内S100^＋ DC的密度越小（r=-0.763,-0.908,P〈0.05）。随着癌组织内VEGF表达量的上升,S-100^＋ DC的密度降低,二者呈负相关（r=-0.817,P〈0.05）。结论：食管癌组织中VEGF的表达可降低S100^＋DC的密度,从而影响机体的免疫功能。

The effects of vascular endothelial growth factor on dendritic cells in esophageal tumor tissue

AIM: To investigate the relationship between vascular endothelial growth factor (VEGF) and S100 protein positive dendritic cell (DC) in esophagelal tumor tissue. METHODS: VEGF and S100 protein in 94 patients with esophageal carcinoma were detected by HRP Labelled streptavidin biotin(LSAB) immunohistochemical method. RESULTS: Postive rate of VEGF in esophageal tumor tissues was 74.46%(70/94); and the later the clinical stage and the lower the differentiation level was the more VEGF was(r=0.864, 0.803, respectively; P<0.05); while the later the clinical stage and the lower the differentiation level was, the less number of S100(+) DCs existed (r=-0.763, -0.908, respectively; P<0.05). Furthermore, there was a reverse correlation between the expression of VEGF and S100(+) DC (r=-0.817, P<0.05). CONCLUSION: There may be a reverse relationship between the expression of VEGF and S100(+) DC in esophageal tumor tissue, VEGF could decrease the number of S100(+) DC and impair the immunological function of the body.