胃癌组织Bmi-1蛋白、MMP-9蛋白、血管内皮生长因子表达情况和微血管密度变化及其临床意义

目的观察胃癌组织Bmi-1蛋白、MMP-9蛋白、血管内皮生长因子(VEGF)表达情况及和微血管密度(MVD)变化,探讨其临床意义。方法选取2010—2013年在邯郸市中心医院行胃癌切除术患者56例,收集其胃癌组织标本56份和残端正常胃黏膜组织标本40份。采用EliVisionTM免疫组织化学法检测Bmi-1蛋白、MMP-9蛋白、VEGF表达情况和MVD(CD34标记)。结果正常胃黏膜组织Bmi-1蛋白、MMP-9蛋白、VEGF阳性表达率分别为27.5%、35.0%、12.5%,低于胃癌组织中的76.8%、83.9%、89.3%(P0.05)。不同性别、年龄、肿瘤大小患者胃癌组织Bmi-1蛋白、MMP-9蛋白、VEGF阳性表达率比较,差异无统计学意义(P0.05);不同肿瘤分化程度、TNM分期及有无淋巴结转移患者胃癌组织Bmi-1蛋白、MMP-9蛋白、VEGF阳性表达率比较,差异有统计学意义(P0.05)。Bmi-1蛋白、MMP-9蛋白、VEGF阳性表达者MVD高于阴性表达者(P0.05)。胃癌组织中Bmi-1蛋白表达与MMP-9蛋白表达(r=0.450)、VEGF表达(r=0.493)呈正相关(P0.05)。结论 Bmi-1蛋白、MMP-9蛋白和VEGF在胃癌组织中均呈高表达,且肿瘤分化程度较低、TNM分期较晚和有淋巴结转移患者胃癌组织Bmi-1蛋白、MMP-9蛋白和VEGF阳性表达率明显升高,且与MVD密切相关。     

老年胃癌组织MMP-9、p53、VEGF蛋白的表达及其临床意义

目的探讨老年胃癌组织基质金属蛋白酶(MMP)-9、p53及血管内皮生长因子(VEGF)蛋白表达及其临床意义。方法选择胃癌根治术后存档病例标本78例(观察组),取癌旁正常组织为对照组。采用免疫组化法检测MMP-9、p53、VEGF蛋白表达情况。比较两组MMP-9、p53、VEGF阳性表达率,胃癌组织MMP-9、p53、VEGF表达与胃癌临床病理学关系,MMP-9与p53、MMP-9与VEGF、p53与VEGF在胃癌组织中表达的关系。结果观察组MMP-9、p53、VEGF阳性表达率高于对照组(P<0.05);MMP-9、p53、VEGF表达与肿瘤直径、淋巴结转移、临床分期、分化程度明显相关(P<0.05);而与无性别明显相关性(P>0.05);MMP-9与p53、MMP-9与VEGF、p53与VEGF在胃癌中表达呈正相关。结论老年胃癌组织中MMP-9、p53、VEGF蛋白呈高表达,且MMP-9、p53、VEGF蛋白高表达与胃癌的发生发展密切相关。     

胃癌组织中MMP-2、MMP-9、VEGF的表达变化及意义

目的观察胃癌组织中基质金属蛋白酶（MMP）2、MMP-9和血管内皮生长因子（VEGF）的表达变化,并探讨其意义。方法采用免疫组化法检测60例胃癌组织及癌旁组织中的MMP-2、MMP-9和VEGF。结果胃癌组织中MMP-2、MMP-9、VEGF表达显著高于癌旁组织（P均〈0.05）,且与淋巴结转移、临床分期有关（P均〈0.05）;胃癌组织中MMP-2、MMP-9与VEGF表达呈正相关（r=0.413、0.436,P均〈0.05）。结论胃癌组织中MMP-2、MMP-9、VEGF表达水平升高,其可能在胃癌的发生、发展中起重要作用。     

ILK和MMP-9在胃癌及其侵袭、转移中的表达及意义

目的探讨整合素连接激酶(Integrin-linked kinase,ILK)和基质金属蛋白酶-9(matrix metalloproteinases-9,MMP-9)在胃癌组织中的表达、临床意义及两者之间的关系。方法应用免疫组织化学SP方法检测ILK和MMP-9在80例胃癌(胃癌组)、30例正常胃黏膜标本(对照组)中的表达,并统计分析其与临床病理参数之间的关系。结果 80例胃癌标本中ILK和MMP-9的阳性表达率分别为55.0%(44/80)、66.3%(53/80),30例对照组中ILK和MMP-9的阳性表达率分别为6.7%(2/30)、10.0%(3/30),胃癌组织中ILK和MMP-9的阳性表达率明显高于对照组(P0.05)。ILK和MMP-9的表达与癌组织分化程度、浸润深度、淋巴结转移及大网膜转移有显著相关性(P0.05),而与患者的年龄、性别及肿瘤大小无相关性(P0.05)。ILK表达与MMP-9表达有显著相关性(r=0.553,P0.01)。结论 ILK和MMP-9在胃癌组织中均呈高表达且二者表达有协同作用,胃癌细胞可能通过ILK和MMP-9促进浸润、转移,联合检测两者表达有助于胃癌浸润、转移的判断。     

胃癌组织MMP-10和VEGF表达与血管生成的关系

目的:研究胃癌组织中基质金属蛋白酶- 10(MMP-10)、血管内皮生长因子(VEGF)和微血管密度(MVD)表达变化及其与肿瘤临床病理特征之间的关系.方法:以CD31作为MVD指标,应用免疫组化法检测60例胃癌组织和60例距病灶5 cm以上的正常组织中的MMP-10、VEGF和CD31的表达并对结果进行分析.结果:60例胃癌组织中的MMP-10、VEGF的表达阳性率分别为81.7%、76.7%,明显高于正常组织的表达阳性率11.7%、8.3%,两者差异有统计学意义(P<0.05).MMP-10、VEGF的表达与MVD、与肿瘤的分化程度、TNM分型、淋巴结的转移、浸润程度有关.结论:MMP-10、VEGF胃癌组织中高表达与胃癌侵袭转移、血管生成密切相关,可作为判断胃癌侵袭转移及预后的重要指标.     

胃癌组织中MMP-9、CD44v6和VEGF的表达变化及意义

目的观察胃癌组织中基质金属蛋白酶9（MMP-9）、黏附分子CD44拼接变异体v6（CD44v6）和血管内皮生长因子（VEGF）表达变化,并探讨其临床意义。方法采用免疫组化法检测80例胃癌组织及癌旁组织中MMP-9、CD44v6和VEGF。结果胃癌组织中MMP-9、CD44v6和VEGF表达显著高于癌旁组织,且有淋巴结转移者均高于无淋巴结转移者,Ⅲ～Ⅳ期者高于Ⅰ～Ⅱ期（P均〈0.05）;胃癌组织中MMP-9、CD44v6与VEGF的表达呈正相关（r=0.331、0.421,P均〈0.05）。结论胃癌组织中MMP-9、CD44v6、VEGF表达水平明显上调,其表达与胃癌淋巴结转移和临床分期有关;三者在胃癌的发生发展过程中可能起协同作用。     

基质金属蛋白酶-9、血管内皮生长因子和增殖细胞核抗原在胃腺癌表达的相关性及临床意义

目的 研究胃腺癌中基质金属蛋白酶-9(MMP-9)及其相关因子血管内皮生长因子(VEGF)和增殖细胞核抗原(PCNA)蛋白的表达,并分析其临床意义.方法 利用组织芯片技术,通过免疫组化法检测45例胃腺癌组织及其相应的45例癌旁组织和10例正常胃黏膜组织中MMP-9、VEGF和PCNA蛋白的表达,并分析它们的相关性及其与胃腺癌的分化程度和发生发展的关系.结果 本研究中MMP-9、VEGF和PCNA分别在胃腺癌、癌旁组织、正常胃黏膜中检出的阳性率为:MMP-9,82.2%(37/45)、64.4%(29/45)、30.0%(3/10),差异有统计学意义(P=0.019);VEGF,73.3%(33/45)、62.2%(28/45)、30.0%(3/10),差异有统计学意义(P=0.029);PCNA,84.4%(38/45)、71.1%(32/45)、10.0%(1/10),差异有统计学意义(P=0.001).MMP-9、VEGF和PCNA分别在高、中、低分化胃腺癌组织中的阳性率为:MMP-9,70.0%(7/10)、80.0%(8/10)、88.0%(22/25),差异有统计学意义(P=0.015);VEGF,50.0%(5/10)、60.0%(6/10)、88.0%(22/25),差异有统计学意义(P=0.000);PCNA,60.0%(6/10)、90.0%(9/10)、92.0%(23/25),差异有统计学意义(P=0.004).等级相关分析表明MMP-9、VEGF和PCNA呈两两正相关(P<0.05).结论 组织芯片技术是胃腺癌中各种蛋白表达的一种强有力的分析工具.MMP-9、VEGF和PCNA蛋白参与胃腺癌的发生发展过程,可以成为临床上评价预后的指标.     

MMP-2、MMP-9在胃癌组织中的表达及相关性分析

目的 研究基质金属蛋白酶(MMP)-2、-9在胃癌组织中的表达及相关性.方法 采用免疫组化法观察60例胃癌及20例胃正常黏膜石蜡标本中MMP-2、-9蛋白的表达情况.结果 MMP-2在胃癌组织中的表达率为75%,MMP-9在胃癌组织中的表达率为68.3%,均显著高于周围正常组织(P<0.05).MMP-2和-9的表达与胃癌的浸润深度、淋巴结转移及肿瘤临床分期相关(P<0.05).且MMP-2的表达与MMP-9的表达呈正相关(P<0.05).结论 MMP-2和-9在胃癌组织中显著高表达,与胃癌的浸润转移相关,其异常表达可能共同参与胃癌的发生、发展过程,检测MMP-2、-9可作为反映胃癌病理学特点的参考指标.     

MMP-9和TIMP-1在胃癌组织中的表达失衡及其与ZHX2的相关性

目的:探讨胃癌中MMP-9和TIMP-1蛋白表达与ZHX2蛋白表达的关系,并分析其与胃癌患者临床病理特征的相关性及其临床意义.方法:应用免疫组织化学Envision二步法检测62例胃癌组织及癌旁正常胃组织中MMP-9、TIMP-1及ZHX2蛋白的表达.用SPSS13.0统计软件分析MMP-9和TIMP-1蛋白表达与ZHX2蛋白表达的相关性,并分析其与患者的临床病理特征的关系.结果:MMP-9蛋白在62例胃癌组织及癌旁正常胃组织中阳性表达率分别为66.13%(41/62)和29.03%(18/62)(P<0.01),TIMP-1蛋白在胃癌组织及癌旁正常胃组织中阳性表达率分别为41.94%(26/62)和74.19%(46/62)(P<0.01).MMP-9蛋白表达在ZHX2阳性和阴性表达组中的阳性率分别为:84.44%(38/45)和17.65%(3/17)(P<0.05),与患者的年龄、性别、肿瘤大小、发生部位、大体类型、分化程度、淋巴结转移、远处转移、TNM分期均无关(P>0.05),而与肿瘤的浸润深度有关(P<0.05);TIMP-1蛋白表达在ZHX2阳性和阴性组中阳性率分别为:28.89%(13/45)和76.47%(13/17)(P<0.05),与患者的年龄、性别、肿瘤大小、发生部位、大体类型、分化程度、浸润深度、淋巴结转移、远处转移、TNM分期均无关(P>0.05).结论:MMP-9高表达可以作为评估胃癌恶性生物学行为及预后的指标,MMP-9/TIMP-1表达失衡与ZHX2表达相关,MMP-9和TIMP-1可为临床选择化疗药物提供参考依据.     

SNCG在胃癌中的表达及其与MMP-2,MMP-9的相关性

目的:研究SNCG在胃癌中的表达及意义,探讨SNCG与MMP-2,MMP-9在胃癌中表达的相关性.方法:采用免疫组化法检测60例胃癌及20例胃正常黏膜石蜡标本中SNCG蛋白和MMP-2、MMP-9的表达.结果:在胃癌组织中SNCG,MMP-2及MMP-9的表达阳性率均高于周围正常组织(65%,75%,68.3% vs 0%,25%,20%,均P<0.05),他们的表达均与肿瘤浸润深度、淋巴结转移及肿瘤临床分期相关(P<0.05).SNCG的表达与MMP-2和MMP-9的表达呈正相关(r=0.383,0.552,均P<0.01),MMP-2的表达和MMP-9的表达呈正相关(r=0.352,P<0.01).结论:SNCG和MMP-2、MMP-9异常表达可能共同参与胃癌的发生、发展过程,SNCG和MMP-2、MMP-9可作为胃癌病理学特点的参考指标.     

以VEGF、MMP-2检测验证幽门螺杆菌L型感染与胃癌的关系

目的研究幽门螺杆菌L型(Helicobacter pyloriL-form,Hp-L型)感染对胃癌的发生、发展和侵袭、转移等生物学行为的影响,并探讨其机制。方法应用革兰染色和免疫组化SP法检测130例胃癌和50例对照组的Hp-L型感染,应用免疫组化SP法检测上述组织的血管内皮生长因子(vascular endothelial growth factor,VEGF)、基质金属蛋白酶-2(matrixmet-alloproteinase-2,MMP-2)蛋白的表达。结果130例胃癌中免疫组化及革兰染色同时Hp-L型阳性的病例有88例。胃癌组与对照组的Hp-L型阳性率相比具有统计学意义(67.69%vs24%,P<0.05)。胃癌组中Hp-L型阳性组的MMP-2、VEGF表达阳性率高于其Hp-L型阴性组(P<0.05);胃癌组中Hp-L型阳性MMP-2和VEGF的表达阳性呈正相关(r=0.45,r=0.30,P<0.001)。结论Hp-L型感染是影响胃癌侵袭和转移的重要因素之一。其机制与胃癌细胞的VEGF、MMP-2的表达上调有关。     

Expression and correlation of CD44v6, vascular endothelial growth factor, matrix metalloproteinase-2, and matrix metalloproteinase-9 in Krukenberg tumor

AIM: To explore the expression and correlation of CD44v6, vascular endothelial growth factor (VEGF), matrix metalloproteinase (MMP)-2 and matrix metalloproteinase (MMP)-9 in Krukenberg and primary epithelial ovarian carcinoma. METHODS: The expressions of CD44v6, VEGF, MMP-2 and MMP-9 were detected by immunohistochemical method in 20 cases of normal ovarian tissues, 38 cases of Krukenberg tumor and 45 cases of primary epithelial ovarian carcinoma. RESULTS: The expression of CD44v6 (primary epithelial ovarian carcinoma tissue vs normal ovarian tissue: x2 = 4.516, P= 0.034; Krukenberg tumor tissue vs normal ovarian tissue: x2 = 19.537, P= 0.001) and VEGF (primary epithelial ovarian carcinoma tissue vs normal ovarian tissue: P = 0.026; Krukenberg tumor tissue vs normal ovarian tissue: x2 = 22.895, P= 0.001) was significantly higher in primary epithelial ovarian carcinoma tissue and Krukenberg tumor tissue than in normal ovarian tissue. The positive expression rate of MMP-2 and MMP-9 was 0% in the normal ovarian tissue. The positive expression rate of CD44v6 (x2 = 10.398, P= 0.001), VEGF (x2 = 13.149, P= 0.001), MMP-2 (x2= 33.668, P= 0.001) and MMP-9 (x2 = 38.839, P = 0.001) was remarkably higher in Krukenberg tumor than in primary epithelial ovarian carcinoma. The correlation of CD44v6, VEGF, MMP-2, and MMP-9 was observed in primary epithelial ovarian carcinoma and Krukenberg tumor. CONCLUSION: CD44v6, VEGF, MMP-2, and MMP-9 are involved in ovarian carcinoma, gastric cancer and Krukenberg tumor. Detection of CD44v6, VEGF, MMP-2 and MMP-9 may contribute to the diagnosis of ovarian carcinoma, gastric cancer, and Krukenberg tumor.     

Survivin、COX-2和VEGF在胃癌中的表达及其与预后的意义

目的研究生存素(Survivin)、环氧合酶-2(COX-2)和血管内皮生长因子(VEGF)在胃癌组织中的表达,探讨它们表达的关系及其与胃癌预后的关系。方法选取淮南东方医院集团总医院1992~2002年10年间行根治性手术治疗,临床、病理和随访资料齐全的胃癌患者65例,应用免疫组化S-P技术,检测Survivin、COX-2和VEGF在胃癌组织中表达。结果早期胃癌的5年生存率为95.2%(20/21),中期胃癌的5年生存率为63.6%(7/11)。中期胃癌组Survivin阳性表达高于早期胃癌组(73.6%vs 66.7%,P<0.05),其VEGF阳性表达和微血管密度(MVD)平均值高于早期胃癌组(P<0.05)。Survivin和COX-2在慢性萎缩性胃炎中的表达明显低于不典型增生者(P<0.05),在癌组织中的表达明显高于非癌组织(P<0.05)。胃癌组中的VEGF阳性表达率和MVD平均值均明显高于非癌组,且与胃癌浸润深度有关(P<0.05)。胃癌中Survivin、VEGF阳性表达的MVD值显著高于Survivin、VEGF阴性表达者(P<0.05);Survivin、COX-2、VEGF及MVD值与胃癌淋巴结转移、血管浸润均密切相关(P<0.05);Survivin、COX-2阳性表达及VEGF阳性表达者5年生存率明显低于阴性或低表达者(P<0.05)。多因素分析显示,淋巴结转移、浸润深度、Survivin表达、VEGF表达均为胃癌独立的预后因素。结论Survivin、COX-2、VEGF与胃癌的生长和浸润转移关系密切,可以作为反映胃癌生物学行为和判断预后的有效指标。     

Clinical significance of changes in tumor markers, extracellular matrix, MMP-9 and VEGF in patients with gastric carcinoma

BACKGROUND/AIMS: The aim of this study was to evaluate the prognostic significance of some serum tumor marker level, extracellular matrix (ECM), matrix metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF) in patients with gastric cancer. METHODOLOGY: The serum tumor markers included CEA, CA50 and CA19-9, ECM included laminin (LN), hyaluronic acid (HA), and collagen type III and IV were measured in 40 patients with gastric carcinoma and 20 matched healthy controls by radioimmunoassay. MMP-9, VEGF and MVD were measured with immunohistochemical methods and the computer image analyzer. Microvascular density (MVD) in tissues of patients with gastric carcinoma was detected. RESULTS: The levels of CEA, CA50, CA19-9, HA, LN and collagen type IV in the patients with metastasis were significantly higher than those in the patients without metastasis (p < 0.05). The expression of MMP-9 and collage type IV in the patients with metastasis and poorly differentiated carcinomas were significantly higher than those in the patients without metastasis whose tumors were well/moderately differentiated (p < 0.05). CONCLUSIONS: CEA, CA50, CA19-9, HA, LN and collagen type IV levels can be used as a signal of metastasis and disease progression in patients with gastric carcinoma. When a gastric carcinoma expresses a high level of MMP-9 and VEGF with high MVD, the power of infiltration and metastasis of the gastric carcinoma is enhanced.     

CD44 V6和MMP-9在胃癌及癌前病变组织中表达

目的探讨CD44V6和基质金属蛋白酶9（MMP-9）在胃癌及癌前病变组织中表达。方法免疫组化SP法测定正常胃黏膜（NOR）、萎缩性胃炎伴中重度肠化（IM）、萎缩性胃炎伴中重度不典型增生（DYS）和早期胃癌（EGC）各40例，进展期胃癌（AGC）100例中CD44V6和MMP-9的表达。结果NOR、IM、DYS、EGC和AGC组中，分别有0、15．0％、25．0％、45．0％和72．0％CD44V6阳性，0、40．0％、50．0％、40．0％和68．0％MMP-9阳性。从IM、DYS至EGC和AGC组，CD44V6和MMP-9表达渐增（均P〈0．05）。结论CD44V6、MMP-9在胃痛的演变过程中不仅仅参与了浸润转移．其在胃癌早期发生、发展中也起着重要作用。     

DNA ploidy analysis and expression of MMP-9, TIMP-2, and E-cadherin in gastric carcinoma

AIM: To investigate DNA ploidy and expression of MMP-9, TIMP-2, and E-cadherin in gastric carcinoma and to explore the mechanism of invasion and metastasis of gastric carcinoma. METHODS: Immunohistochemical methods were used to detect the expressions of MMP-9, TIMP-2, and E-cadherin in 156 cases, including 99 cases of gastric carcinoma, 16 cases of adjacent noncancerous mucosa, 16 cases of distant metastases and 25 cases of metastatic lymph node (LN) from gastric carcinoma. Flow cytometry DNA ploidy and S-phase fraction (SPF) analysis were performed on 57 cases, including 47 cases of gastric cancer, 6 cases of adjacent noncancerous mucosa, and 4 cases of distant metastatic cancer. RESULTS: The expression of MMP-9 was significantly correlated with Lauren's classification, Borrmann's classification, LN metastasis, tumor metastasis, and TNM stage, as well as depth of invasion (all P<0.05). The positive rate was lower in noncarcinoma than in carcinoma (31.3% vs66.7%, P<0.01). The expression of TIMP-2 was significantly correlated with Borrmann's classification, LN metastasis, and the depth of invasion (all P<0.05), The expression of E-cadherin was significantly correlated with differentiation, Lauren's classification, Borrmann's classification, and LN metastasis, as well as the depth of invasion (P<0,01 or P<0.05). E-cadherin was less expressed in carcinoma than in noncarcinoma (42.4% vs87.5%, P<0.01). There was a positive correlation between MMP-9 and TIMP-2 and a negative correlation between MMP-9 and E-cadherin, but no correlation between TIMP-2 and E-cadherin. Also there was a positive correlation between DNA aneuploid rate and differentiation and LN metastasis. SPF that was higher than 15% was positively correlated with tumor size, differentiation and LN metastasis. And there was a significant difference between carcinoma and noncarcinoma in DNA aneuploid rate and SPF. CONCLUSION: With tumor progression and development of heterogeneity, the abnormal expressions of MMP-9, TIMP-2, and E-cadherin or DNA aneuploid rate or high SPF gradually increases, suggesting that they play a crucial role in gastric carcinoma progression.     

Imbalance between expression of matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 in invasiveness and metastasis of human gastric carcinoma

AIM: The expressive balance between matrix metalloproteinase-9 (MMP-9) and its tissue inhibitor of metalloproteinase-1 (TIMP-1) plays a critical role in maintaining the degradation and synthesis of extracellular matrix. Loss of such balance is associated with invasion and metastasis of tumors. This study aimed to determine the expression of MMP-9 and TIMP-1 in gastric carcinoma, and the association of the expressive imbalance between MMP9 and TIMP-1 with the invasion and metastasis and prognosis of gastric carcinoma.METHODS: We used immunohistochemistry to determine the expressions of MMP-9, TTMP-1 and proliferating cell nuclear antigen Ki-67 in the gastric specimens taken from 256 patients with primary gastric carcinoma. The patients were followed-up for up to 96 months.RESULTS: No association between the expression of MMP9 and TIMP-1 and patients' sex and age, tumor size and location of gastric carcinoma was observed. The incidence of the positive expression of MMP-9 in cases with tumors invasion to muscularis propria and visceral peritoneum (70.13% and 69.09%, respectively) was significantly higher than that in cases with tumor invasion only to lamina propria or submucosa (42.50 %, P=0.0162). The positive correlation between MMP-9 expression and the depth of tumor invasion was observed (Pearson correlation coefficient=0.2129,P=0.016). Along with the increase of the metastatic station of lymph nodes, the incidence of the MMP-9 expression was increased by degrees; a positive correlation between them was observed (Pearson correlation coefficient=0.2910,P=0.0001). There was also a significant correlation between MMP-9 expression and the TNM stage in gastric carcinoma (Pearson correlation coefficient=0.3027, P＜0.0001). The incidence of MMP-9 expression in stage Ⅱ and Ⅲ/Ⅳ (75.00%and 76.15%, respectively) was significantly higher than those in stage Ⅰ (46.15 %, P＜0.0001). A negative correlation between TIMP-1 immunoreactivity and the depth of invasion,status of lymph node metastasis and TNM stage was observed (Pearson correlation coefficient =-0.1688, -0.3556and -0.3004, P=0.023, ＜0.0001 and ＜0.0001, respectively).Four types of co-expression of MMP-9 and TIMP-1 were observed; i.e. MMP-9 positive but T IMP-1 negative (n=115),both positive (n=52), both negative (n=62) and MMP-9negative but TIMP-1 positive (n=27). The frequency of serosal invasiveness was significant higher in patients with MMP-9 but without TIMP-1 expression than those with other types of the co-expression (P=0.0303). The incidence of lymph node metastasis was highest in patients with MMP-9but without TIMP-1 expression, and lowest in those with TIMP-1 but without MMP-9 expression (P＜0.0001). The survival rate in patients with MMP-9 but without TIMP-1expression was lower than that in those with TIMP-1 but without MMP-9 expression (P=0.0014).CONCLUSION: Our results in gastric carcinoma demonstrated a significant positive association of MMP-9 over-expression with proliferation of tumor cells, the depth of invasiveness,lymph node metastasis and TNM stage, suggesting MMP-9can serve as a molecular marker of tumor invasion and metastasis. We also demonstrate a significant negative relationship of TIMP-1 expression with the depth of invasiveness and lymph node metastasis, which provide a new idea in the tumor biological and genetic treatment.The interaction between MMP-9 and TIMP-1 in the processes of tumor invasion and metastasis is that MMP-9 mainly promotes tumor invasion and metastasis and TIMP-1 inhibits functions of MMP-9. The imbalance between MMP-9 and TIMP-1 expression may suggest the occurrence of tumor invasion and metastasis, predict poor prognosis. For patients with imbalanced MMP-9 and TIMP-1 expression, the optimal treatment scheme needs to be selected.     

MMP-7与Fas蛋白在胃癌组织中的表达及意义

目的:探讨基质金属蛋白酶-7(MMP-7)蛋白和Fas蛋白在胃癌组织中的表达、相互关系及意义.方法:应用免疫组化方法检测了82例胃癌组织及30例周边正常胃黏膜中MMP-7和Fas的表达情况.结果:胃癌组织中MMP-7蛋白阳性率显著高于正常胃黏膜(73.2%vs10%,P<0.001);正常胃黏膜中Fas蛋白阳性率显著高于胃癌组织(39.1%vs93.3%,P<0.001).MMP-7阳性表达率与淋巴结转移、TNM分期显著相关(P<0.001),而与肿瘤细胞分化程度无显著性相关.Fas蛋白阳性表达率与肿瘤细胞分化程度显著相关(P<0.05),而与淋巴结转移、TNM分期无显著性相关.胃癌组织中MMP-7与Fas表达具有显著等级负相关(r=-0.597,P<0.001).结论:MMP-7与Fas表达胃癌的生物学行为密切相关,且两者之间的表达强度具有显著等级负相关.