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胃癌是常见的消化道恶性肿瘤,胃癌的发生是一个多步骤、多因素进行发展的过程。癌症的高发因素中,基质金属蛋白酶-7(MMP-7)与血管内皮生长因子(VEGF)已引起广泛重视,国内外的相关文献中有多次报道,但在胃癌的诱发因素中,MMP-7及VEGF与幽门螺杆菌(Hp)的相互关系却鲜有研究; 本实验选取60例胃癌病人,通过用荧光定量PCR法及免疫组织化学检测分别测定其中的MMP-7与VEGF的表达,统计分析其表达水平与各临床病理特征之间有无相关性,从而探求三者与胃癌之间的相互关系,以探求胃癌发生及转移检测的特异、敏感指标,以助于胃癌病人早期诊疗及预后评价。
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Hp阳性组MMP-7、VEGF mRNA表达均高于Hp阴性组(P < 0.01)(见表 1)。
分组 n MMP-7 VEGF Hp阴性组 30 1.000±0.092 1.000±0.094 Hp阳性组 30 1.422±0.088 1.465±0.093 t — 18.16 19.26 P — < 0.01 < 0.01 表 1 Hp阳性组与Hp阴性组中MMP-7、VEGFmRNA表达结果比较(x±s)
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有浆膜层浸润、有淋巴结转移的胃癌病人MMP-7和VEGF mRNA表达量均高于无浆膜层浸润、无淋巴结转移的病人(P < 0.01)(见表 2)。
分组 n MMP-7 VEGF 无浆膜层浸润 19 1.000±0.112 1.000±0.082 有浆膜层浸润 41 1.315±0.083 1.422±0.098 t — 12.21 16.29 P — < 0.01 < 0.01 无淋巴结转移组 19 1.000±0.124 1.000±0.121 有淋巴结转移组 41 1.342±0.080 1.391±0.087 t — 11.01* 14.26 P — < 0.01 < 0.01 *示t′值 表 2 浆膜侵犯、淋巴转移不同的胃癌病人MMP-7和VEGF mRNA表达结果比较(x±s)
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60例标本中MMP-7与VEGF mRNA表达值之间呈正相关(r=0.498,P < 0.01)。
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MMP-7、VEGF在癌旁正常胃黏膜组织中几乎不表达或弱表达,表达则呈浅黄色。均定位于细胞质,呈棕黄色(见图 1~4)。MMP-7、VEGF蛋白在胃癌组织中的阳性率高于癌旁正常胃组织(61.6%vs 5.3% 56.6% vs 11.3%),Spearman相关性分析结果显示,Hp与MMP-7及VEGF表达呈正相关,MMP-7和VEGF的表达呈正相关(P < 0.05~P < 0.01)(见表 3~4)。
Hp MMP-7 VEGF - + - + - 17 13 17 13 + 6 24 9 21 rs 0.377 0.269 P < 0.01 < 0.05 表 3 Hp与MMP-7、VEGF在胃癌中蛋白表达的相关性
VEGF MMP-7 - + - 19 7 + 4 30 rs 0.625 P < 0.01 表 4 VEGF与MMP-7在胃癌中蛋白表达的相关性
幽门螺杆菌感染病人胃癌组织中MMP-7、VEGF的表达及相关性研究
Study on the correlation between the expression levels of MMP-7 and VEGF in gastric cancer tissues of patients with Helicobacter pylori infection
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摘要:
目的检测幽门螺杆菌(Hp)感染与基质金属蛋白酶-7(MMP-7)、血管内皮生长因子(VEGF)在胃癌组织中的表达及临床意义。 方法胃癌组织来源于2015年1月至2018年11月蚌埠医学院第一附属医院普外科手术室、肿瘤外科手术室,按照幽门螺杆菌是否感染分2组。采用荧光定量PCR法及免疫组织化学检测MMP-7、VEGF的表达。 结果60例胃癌组织中,Hp阳性组、有浆膜层浸润、有淋巴结转移的胃癌病人MMP-7、VEGF mRNA表达高于Hp阴性组、无浆膜层浸润、无淋巴结转移的病人(P < 0.01);MMP-7与VEGF mRNA表达值之间呈正相关(r=0.498,P < 0.01);Hp与MMP-7及VEGF表达呈正相关,MMP-7和VEGF的表达呈正相关(P < 0.05~P < 0.01)。 结论MMP-7、VEGF与胃癌的发生、发展可能有关,在胃癌的发生、发展过程中幽门螺杆菌与MMP-7、VEGF可能起到了相互协同的作用。MMP-7与VEGF表达呈正相关。 Abstract:ObjectiveTo detect the expression levels and clinical significance of matrix metalloproteinase-7(MMP-7) and vascular endothelial growth factor(VEGF) in gastric cancer tissues of patients with Helicobacter pylori(Hp) infection. MethodsThe gastric cancer tissues were collected from Department of General Surgery and Tumor Surgery Operating Rooms of the First Affiliated Hospital of Bengbu Medical College from January 2015 to November 2018, and were divided into two groups according to whether with Hp infection.The expression levels of MMP-7 and VEGF were detected using the fluorescence quantitative PCR and immunohistochemistry. ResultsAmong 60 cases of gastric cancer tissues, the mRNA expression levels of MMP-7 and VEGF in Hp-positive group, patients with serous layer infiltration and lymph node metastasis were higher than in Hp-negative group, patients without serous layer infiltration and lymph node metastasis(P < 0.01).There was a positive correlation between MMP-7 and VEGF mRNA expressions(r=0.498, P < 0.01).The Hp was positively correlated with MMP-7 and VEGF expression levels, and the expression level of MMP-7 was positively correlated with VEGF(P < 0.05 to P < 0.01). ConclusionsMMP-7 and VEGF may be related to the occurrence and development of gastric cancer, and Hp, MMP-7 and VEGF may play a synergistic role in the occurrence and development of gastric cancer.The expression level of MMP-7 is positively correlated with VEGF. -
表 1 Hp阳性组与Hp阴性组中MMP-7、VEGFmRNA表达结果比较(x±s)
分组 n MMP-7 VEGF Hp阴性组 30 1.000±0.092 1.000±0.094 Hp阳性组 30 1.422±0.088 1.465±0.093 t — 18.16 19.26 P — < 0.01 < 0.01 表 2 浆膜侵犯、淋巴转移不同的胃癌病人MMP-7和VEGF mRNA表达结果比较(x±s)
分组 n MMP-7 VEGF 无浆膜层浸润 19 1.000±0.112 1.000±0.082 有浆膜层浸润 41 1.315±0.083 1.422±0.098 t — 12.21 16.29 P — < 0.01 < 0.01 无淋巴结转移组 19 1.000±0.124 1.000±0.121 有淋巴结转移组 41 1.342±0.080 1.391±0.087 t — 11.01* 14.26 P — < 0.01 < 0.01 *示t′值 表 3 Hp与MMP-7、VEGF在胃癌中蛋白表达的相关性
Hp MMP-7 VEGF - + - + - 17 13 17 13 + 6 24 9 21 rs 0.377 0.269 P < 0.01 < 0.05 表 4 VEGF与MMP-7在胃癌中蛋白表达的相关性
VEGF MMP-7 - + - 19 7 + 4 30 rs 0.625 P < 0.01 -
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