AIM: To explore the effect of intratumoral expressions of interleukin-12 (IL-12) and interleukin-18 (IL-18) on clinical features, angiogenesis and prognosis of gastric carcinoma. METHODS: The expressions of IL-12 and ...AIM: To explore the effect of intratumoral expressions of interleukin-12 (IL-12) and interleukin-18 (IL-18) on clinical features, angiogenesis and prognosis of gastric carcinoma. METHODS: The expressions of IL-12 and IL-18 from 50 samples of gastric cancer tissue were analyzed by immunohistochemistry, and microvessel density (MVD) was determined with microscopic imaging analysis system. RESULTS: The positive expression rates of IL-12 and IL-18 were 44% (22/50) and 26% (13/50), respectively. IL-12 was significantly associated with pathologic differentiation, depth of invasion, lymph node metastasis, distant metastasis, and TNM stage, and IL-18 was closely related to distant metastasis. Intratumoral IL-12 and IL-18 expressions were not statistically related to MVD scoring. IL-12-positive patients survived significantly longer than those with IL-12-negative tumors, but there was no significant difference between IL-18-positive patients and IL-18-negative ones. The multivariate analysis with Cox proportional hazard model revealed IL-12, MVD and T stage were independent prognostic factors. CONCLUSION: The positive expressions of IL-12 and IL-18 can play an important role in progression and metastasis of gastric cancer, and IL-12 might be an independent factor of poor prognosis in gastric carcinoma.展开更多
文摘AIM: To explore the effect of intratumoral expressions of interleukin-12 (IL-12) and interleukin-18 (IL-18) on clinical features, angiogenesis and prognosis of gastric carcinoma. METHODS: The expressions of IL-12 and IL-18 from 50 samples of gastric cancer tissue were analyzed by immunohistochemistry, and microvessel density (MVD) was determined with microscopic imaging analysis system. RESULTS: The positive expression rates of IL-12 and IL-18 were 44% (22/50) and 26% (13/50), respectively. IL-12 was significantly associated with pathologic differentiation, depth of invasion, lymph node metastasis, distant metastasis, and TNM stage, and IL-18 was closely related to distant metastasis. Intratumoral IL-12 and IL-18 expressions were not statistically related to MVD scoring. IL-12-positive patients survived significantly longer than those with IL-12-negative tumors, but there was no significant difference between IL-18-positive patients and IL-18-negative ones. The multivariate analysis with Cox proportional hazard model revealed IL-12, MVD and T stage were independent prognostic factors. CONCLUSION: The positive expressions of IL-12 and IL-18 can play an important role in progression and metastasis of gastric cancer, and IL-12 might be an independent factor of poor prognosis in gastric carcinoma.
文摘目的通过建立胃癌裸鼠种植瘤模型观察维生素(Vit)K2联合苯那普利对人胃癌SGC-7901裸鼠种植瘤的影响,以探讨两者对胃癌细胞的作用及机制。方法通过人胃癌SGC-7901细胞接种建立胃癌裸鼠种植瘤模型后,随机分成对照组、Vit K2组、苯那普利组和联合组,每组10只,灌胃2周后处死;TUNEL法检测各组胃癌细胞凋亡情况,免疫组化法检测血管内皮生长因子(VEGF)、caspase 3的蛋白表达情况。结果与对照组相比,药物组能明显抑制瘤体生长,而联合组较单独药物组抑制作用更明显(P<0.05)。联合组在抑制胃癌细胞生长和诱导胃癌细胞凋亡方面的作用均优于单独药物组(P<0.05)。与对照组比,联合组的VEGF表达阳性率明显下降(P<0.05)。结论 Vit K2与苯那普利联合能抑制裸鼠胃癌细胞生长,两者联合有协同作用,其机制可能为通过诱导细胞凋亡及抑制VEGF的表达。