基质金属蛋白酶-9和组织金属蛋白酶抑制剂-1在食管鳞癌中的表达

目的探讨基质金属蛋白酶-9（MMP-9）和组织金属蛋白酶抑制剂-1（TIMP-1）在食管鳞癌中的表达及其临床意义。方法用免疫组化和Western blot法分别检测41例食管鳞癌患者的癌及相应正常组织中MMP-9和TIMP-1的表达变化。结果食管鳞癌组织中MMP-9阳性表达率与食管癌淋巴结及静脉转移有关；MMP-9的阳性表达率与表达量均显著高于TIMP-1；MMP-9和TIMP-1的表达呈负相关。结论MMP-9与食管鳞癌的侵袭转移有关，其机制可能与食管鳞癌组织中的MMP-9／TIMP-1平衡失调有关；MMP-9与TIMP-1联合检测有助于食管鳞癌生物学行为的判断。     

MMP-9和TIMP-1在胃癌肿瘤细胞浸润和转移过程中的调节作用分析

[目的]研究MMP-9、TIMP-1在胃癌肿瘤细胞浸润、转移过程中的调节作用,以期为临床诊治、评估预后提供信息。[方法]选择2016年1月～2018年8月于我院接受诊治的274例原发性胃癌作为观察对象,通过免疫组化法对患者的胃癌细胞MMP-9及TIMP-1表达情况进行检测,分析MMP-9、TIMP-1和肿瘤细胞浸润、转移相关性。[结果]MMP-9、TIMP-1阳性和患者的性别及年龄、胃癌肿瘤出现部位、胃癌肿瘤大小无显著相关性,差异无统计学意义(P0.05);胃癌肿瘤细胞浸润至固有肌层、浆膜层的患者MMP-9阳性率显著高于胃癌肿瘤细胞浸润至黏膜/黏膜下层者,差异有统计学意义(P0.05);MMP-9阳性表达与淋巴结转移程度、TNM分期呈正相关,差异有统计学意义(P0.05);但TIMP-1阳性表达和胃癌的浸润程度及淋巴结转移程度、TNM分期均呈负相关,差异有统计学意义(P0.05);胃癌患者的肿瘤组织内MMP-9、TIMP-1表达呈4种类型,而MMP-9表达高于TIMP-1表达者,肿瘤细胞出现浆膜层浸润及淋巴结转移的概率显著超过MMP-9表达低于TIMP-1、两者表达平衡患者,差异有统计学意义(P0.05)。[结论]MMP-9的阳性表达和胃癌肿瘤细胞浸润、转移显示为正相关,而TIMP-1的阳性表达和胃癌肿瘤细胞浸润、转移显示为负相关,两者与胃癌肿瘤细胞浸润、转移过程中发挥的调节作用为MMP-9对肿瘤细胞转移具有促进作用,但TIMP-1对胃癌存在独立性抑制作用,即可认为MMP-9呈阳性表达但TIMP-1呈阴性表达情况下,说明胃癌患者的预后欠佳。     

MMP-2、TIMP-4在食管鳞状细胞癌中的表达及意义

目的 探讨食管鳞状细胞癌(ESCC)组织中基质金属蛋白酶2(MMP-2)及其特异性抑制剂基质金属蛋白酶抑制剂4(TIMP-4)的表达及其与临床病理参数的相关性.方法 选取经病理证实的ESCC组织68例及正常食管组织12例,免疫组化方法检测MMP-2与TIMP-4的表达.结果 MMP-2及TIMP-4在ESCC中阳性表达率明显高于正常食管组织(P<0.05);MMP-2表达与ESCC的区域淋巴结转移、浸润深度、临床分期等呈正相关,TIMP-4的表达与上述临床病理参数呈负相关;MMP-2与TIMP-4在ESCC中的表达呈负相关关系.结论 MMP-2和TIMP-4平衡的破坏是ESCC发生侵袭、转移甚至影响预后的重要因素.     

Angiopoietin-2,MMP-9和TIMP-1在胰腺癌中的表达及其与胰腺癌侵袭转移的关系

目的观察血管生成素-2(Ang-2),基质金属蛋白酶-9(MMP-9)及其组织抑制因子-1(TIMP-1)在胰腺癌中的表达,探讨3者的表达与胰腺癌侵袭转移间的关系及3者间的联系。方法应用免疫组化染色法检测40例胰腺癌患者癌组织,20例癌旁组织中Ang-2、MMP-9及TIMP-1的表达。结果胰腺癌组织中Ang-2、MMP-9及TIMP-1阳性表达率分别为45%,67·5%及47·5%,均显著高于癌旁组织中表达水平。结论Ang-2、MMP-9在胰腺癌的侵袭与转移过程中起重要作用,并且它们之间可能存在互相诱导或是协同效应,其共位表达可能作为判断预后的指标。TIMP-1的表达随胰腺癌浸润深度增加而减少。     

基质金属蛋白酶-2及其抑制剂在肺癌侵袭转移中作用的研究

目的探讨基质金属蛋白酶-2(matrixmetalloproteinase-2,MMP-2)及金属蛋白酶组织抑制剂-2(tissueinhibitorofmetalloproteinase-2,TIMP-2)与肺癌生物学行为的关系。方法对MMP-2、TIMP-2蛋白进行间接免疫荧光标记,采用流式细胞仪进行定量检测。结果MMP-2、TIMP-2蛋白及MMP-2/TIMP-2在肺癌组织中的表达量明显高于癌旁正常肺组织(P<0.01),在小细胞肺癌(SCLC)中的表达量显著高于非小细胞肺癌(NSCLC)(P<0.01);MMP-2、TIMP-2蛋白在腺癌中的表达量高于鳞癌,但无显著差异(P>0.05);有淋巴结转移病例中明显高于无淋巴结转移者(P<0.01),MMP-2表达与术后生存期呈负相关(r=-0.68,P<0.01),TIMP-2与术后生存期呈正相关(r=0.55,P<0.01)。而MMP-2/TIMP-2比值与术后生存期呈负相关(r=-0.45,P<0.05)。三者均与临床分期及病理学分级无关。结论在肺癌的发生中,MMP-2/TIMP-2失衡,MMP-2表达的上调是一个关键事件;可作为肺癌恶性程度及预后判断的指标。     

鼻腔鳞状细胞癌组织中MMP-2、MMP-9、TIMP-1、TIMP-2的表达变化及意义

目的 观察鼻腔鳞状细胞癌组织中基质金属蛋白酶(MMP)-2、MMP-9及组织金属蛋白酶抑制剂(TIMP)-1、TIMP-2的表达变化,并探讨其意义.方法 鼻腔鳞状细胞癌患者45例(观察组),鼻窦炎或过敏性鼻息肉患者30例(对照组),采用免疫组化法检测各组MMP-2、MMP-9、TIMP-1、TIMP-2,分析各指标间及与鼻腔鳞状细胞癌临床病理特征的相关性.结果 观察组MMP-2、MMP-9、TIMP-1、TIMP-2阳性率分别为57.8％、62.2％、66.7％、73.3％,对照组分别为23.3％、13.3％、56.7％、26.7％,两组MMP-2、MMP-9、TMP-2比较P均＜0.05.MMP-2表达与鼻腔鳞状细胞癌TNM分期、淋巴结转移、分化程度有关(P均＜0.05),MMP-9、TIMP-2与鼻腔鳞状细胞癌TNM分期、分化程度有关(P均＜0.05).鼻腔鳞状细胞癌中MMP-2与TMP-2表达呈正相关(r=0.64,P＜0.05).结论 MMP-2、MMP-9及TIMP-2表达与鼻腔鳞状细胞癌的浸润、转移及预后密切相关.     

基质金属蛋白酶-2和-9在食管鳞状细胞癌中的过表达

目的 探讨人食管鳞癌组织中基质金属蛋白酶(MMP)-2、-9的表达及其临床意义.方法 采用免疫组织化学法,检测57例食管鳞癌及10例食管正常黏膜石蜡标本中MMP-2、-9蛋白的表达情况.结果 食管鳞癌组织中MMP-2及MMP-9阳性表达率(40.3%,61.4%)显著高于正常组织(0.0%,10.0%)(P＜0.05).食管鳞癌组织中MMP-2及MMP-9阳性表达与淋巴结转移和癌组织浸润深度有显著相关性(P＜0.05),而与患者的性别、年龄和组织分化程度无显著相关性(P＞0.05).结论 MMP-2和MMP-9在食管癌中显著高表达,与食管癌的转移及侵袭有关,其异常表达可能共同参与食管癌的发生、发展过程,检测MMP-2、-9可作为食管癌病理学特点的参考指标.     

E-cadherin、MMP-9及TIMP-1表达与大肠癌生物学行为及预后的关系

目的 探讨E-钙粘素(E-cadhefin)、基质金属蛋白酶-9(MMP-9)及其抑制剂(TIMP-1)表达与大肠癌生物学行为及预后的关系.方法 采用免疫组化染色法检测54例大肠癌组织标本中E.钙粘素、MMP-9及TIMP-1的表达情况,经结肠镜活检的大肠腺瘤组织标本15例作为正常对照.结果 E-cadherin的表达率在大肠腺瘤中为86.7%,显著高于大肠癌中55.6%的表达率,两者存在显著性差异(P<0.05).E-cadherin的表达与大肠癌的大体类型有关,且随着大肠癌分化程度的降低而减少.与浸润深度、淋巴结转移呈负相关(P<0.05).其表达率越高,患者的预后越好.大肠癌MMP-9和TIMP-1蛋白表达存在显著正相关(r=0.374,P<0.01).MMP-9的表达率在大肠腺瘤中为33.3%,显著低于大肠癌中的70.4%(P<0.05).其表达与大肠癌的浸润深度、Dukes分期、淋巴结转移及生存期均密切相关(P均<0.05).TIMP-1的表达在大肠腺瘤及大肠癌组织中没有显著性差异(P>0.05),但其表达与大肠癌组织学类型、分化程度、淋巴结转移密切相关,对预后无显著性影响(P>0.05).结论 E.钙粘素、MMP-9及TIMP-1对大肠癌生物学行为均有明显影响.E-钙粘素的正常表达将显著降低大肠癌的浸润和转移能力.MMP-9蛋白阳性表达促进大肠癌浸润和转移,患者预后欠佳.E-钙粘素、MMP-9和TIMP-1的检测可以成为临床判断大肠癌的生物学行为及预后的重要参考指标.     

胰岛素对大鼠平滑肌细胞表达MMP-9、TIMP-1及内皮细胞表达sES的影响

目的探讨胰岛素对SD大鼠平滑肌细胞表达基质金属蛋白酶9(MMP-9)、组织抑制因子1(TIMP-1)以及内皮细胞表达可溶性E-选择素(s ES)的影响。方法原代培养SD大鼠颈内动脉平滑肌细胞及主动脉内皮细胞,用不同剂量的胰岛素作用后,以酶联免疫吸附实验(ELISA)分别测定上清液MMP-9、TIMP-1及s ES的水平。结果与对照组(无胰岛素)相比,胰岛素组MMP-9及s ES水平显著增高,TIMP-1则显著降低(P0.05)。经Pearson相关分析显示,胰岛素浓度与MMP-9(r=0.815,P0.001)及s ES(r=0.841,P0.001)呈正相关,与组织抑制因子1(r=-0.740,P0.001)呈负相关。结论胰岛素促进SD大鼠平滑肌细胞MMP-9及内皮细胞s ES表达,抑制平滑肌细胞TIMP-1表达,并呈剂量依赖性。     

TβRⅡ、MMP-7和TIMP-2表达与大肠癌临床病理关系的研究

目的 探讨转化生长因子βⅡ型受体(TβRⅡ)、基质金属蛋白酶-7(MMP-7)及金属蛋白酶组织抑制因子-2(TIMP-2)蛋白在大肠癌中的表达水平和相互关系,分析三者与大肠癌临床病理的关系.方法 应用免疫组化SP法检测60例大肠癌和8例正常大肠组织TβR Ⅱ、MMP-7、TIMP-2的表达水平,分析两组间表达差异.结果 TβR Ⅱ、MMP-7、TIMP-2蛋白在大肠癌中的阳性表达率依次为76.7%(46/60)、73.3%(44/60)和40.0%(24/60);其表达与肿瘤侵犯深度和转移密切相关,TβR Ⅱ和MMP-7的表达呈正相关.TIMP-2与TβR Ⅱ和MMP-7表达呈负相关.结论 TβR Ⅱ、MMP-7和TIMP-2表达与大肠癌的侵袭转移和预后密切相关.可作为判定大肠癌预后的指标.     

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.     

食管鳞癌中RECK和MMP-9蛋白表达的相关性及临床病理意义

目的:探讨RECK及基质金属蛋白酶-9(MMP-9)表达与食管癌发生、发展及浸润、转移的关系.方法:应用免疫组化SP法检测62例食管鳞癌组织、31例癌旁不典型增生组织及62例正常食管黏膜组织中RECK及MMP-9蛋白表达.采用X2检验进行统计学分析.结果:食管鳞癌组织中RECK和MMP-9蛋白表达与癌的组织学分级、浸润深度及淋巴结转移密切相关(χ2=10.422,8.550,4.751;χ2=8.447,14.333,5.373;均P＜0.05).在食管鳞癌癌变过程中RECK蛋白表达在癌组织、癌旁不典型增生组织及正常黏膜组织中的表达率依次增高,分别为59.7%,71.0%,85.5%,组间比较有明显差异(P＜0.01);而MMP-9蛋白在癌组织、癌旁不典型增生组织及正常黏膜组织中的表达率依次降低,分别为80.6%,80.6%,27.4%,组间比较有明显差异(P＜0.01).结论:RECK和MMP-9在食管癌的浸润、转移及黏膜上皮癌变过程中起重要作用,RECK及MMP-9的联合检测可望成为食管鳞癌早期诊断和判断预后的分子指标之一.     

Usefulness of MMP-9/TIMP-1 in Predicting Tumor Recurrence in Patients Undergoing Curative Surgical Resection for Gastric Carcinoma

Degradation of the extracellular matrix is an essential step in tumor invasion and metastasis. It involves the actions of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs). We evaluated the expression of MMP-9 and TIMP-1 in gastric carcinomas and the relationship between this expression and tumor recurrence. Eighty patients who had undergone curative surgical resection for gastric carcinoma were included. Resected gastric tissue samples were stained immunohistochemically to evaluate the expression of MMP-9 and TIMP-1. TIMP-1 expression was related to the depth of tumor invasion and lymph node metastasis. The proportion of tumors larger than 5 cm, or displaying muscle layer invasion, and the cumulative incidence of tumor recurrence were significantly elevated in patients with tumors expressing TIMP-1. Furthermore, these measures were lowest in patients with no TIMP-1 expression and highest in patients who only expressed TIMP-1. In conclusion, TIMP-1 expression and the balance between expression of MMP-9 and expression of TIMP-1 may be important indicators of tumor progression and predictors of tumor recurrence.     

Clinical significance of matrix metalloproteinase-9 expression in esophageal squamous cell carcinoma

AIM: To evaluate the expression of matrix metalloproteinase-9 (MMP-9) and its clinical significance in esophageal squamous cell carcinoma (ESCC). METHODS: The expression of MMP-9 in 208 cases of ESCC was detected by immunohistochemistry (IHC) and its clinical significance in ESCC especially the relationship with the clinicopathological parameters was analyzed. RESULTS: The percentage of positive cases for MMP-9 detected by IHC was 49.0%. MMP-9 was mainly expressed in the cytoplasm of cancer cells especially in the invasive front. Only weak expression was detected in the stromal cells and no expression in non-cancerous mucosa. The expression of MMP-9 was positively correlated with poorer differentiation (P= 0.001<0.01), existence of vessel permeation (P= 0.027<0.05) and lymph node metastasis (P=0.027<0.05). CONCLUSION: The expression of MMP-9 correlates with the cancer cell differentiation, vessel permeation and lymph node metastasis. It may be a novel biomarker for the diagnosis and treatment of ESCC.     

Matrix metalloproteinase-2 and tissue inhibitor of metallo-proteinase-2 in colorectal carcinoma invasion and metastasis

AIM: To explore the relationship between matrix metallopr- oteinase-2 (MMP-2) and tissue inhibitor of metallopr- oteinase-2 (TIMP-2) in the development of colorectal carcinoma and to provide a valuable marker for clinical diagnosis. METHODS: Twenty-five patients with colorectal carcinoma underwent surgical resection. Samples were taken from tumor sites and normal tissues. MMP-2 activity was determined by gelatin zymography. Western blot and ABC immunohist-ochemical staining were used to detect the expression levels of MMP-2 and TIMP-2 in normal and colorectal carcinoma tissues. Statistical analyses were performed using the Student's t test and one-way ANOVA. P<0.05 was considered statistically .significant. All the statistical analyses were performed using SPSS 10.0 software. RESULTS: MMP-2 activity could be detected in both normal and colorectal carcinoma tissues. MMP-2 activity in colorectal carcinoma tissues was much higher than that in normal tissues (P<0.05, t=3.916,4.227). MMP-2 activity was positively related to the colorectal carcinoma invasion depth, lymph node metastasis and Duke's stage. Western blot and ABC immunohistochemical staining demonstrated that the expression level of MMP-2 in colorectal carcinoma tissues was much higher than that in normal tissues (P<0.05, t = 9.429), but the expression level of TIMP-2 in colorectal carcinoma tissues was much lower than that in normal tissues (P<0.05, t = 7.329). The MMP-2/TIMP-2 ratio of colorectal carcinoma was much higher than that of normal tissues. With the progression of invasion depth, lymph node metastasis and tumor Duke's stage, the activity and expression level of MMP-2 and TIMP-2 gradually increased, but the MMP-2/TIMP-2 ratio gradually decreased. CONCLUSION: The balance between MMP-2 and TIMP-2 plays a crucial role in the process of colorectal carcinoma invasion and metastasis.     

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.     

Expression of G3BP and RhoC in esophageal squamous carcinoma and their effect on prognosis

AIM： To investigate the expression and significance of G3BP and RhoC proteins in esophageal squamous carcinoma （ESC）.
METHODS： The expression of G3BP and Rhoc proteins in 80 cases of ESC was detected by immunohistochemistry. The relationship was studied between the expression of the two proteins and tumor size, differentiation degree, TNM stage, lymph node metastasis and prognosis of ESC.
RESULTS： The positive expression rate of G3BP in ESC was 71.25%; and the rate in the lymph node metastasis group was significantly higher than that in the nonlymph node metastasis group （Z = -2.283, P = 0.022）, but no relations were found between G3BP expression and tumor size, differentiation degree and TNM stage （P 〉 0.05）. The group with G3BP positive expression had shorter survival time than the group with G3BP negative expression （P = 0.000）. The positive expression rate of RhoC in ESC was 66.25%; and the rate in the lymph node metastasis group was significantly higher than that in the non-lymph node metastasis group （Z = -2.115, P 〈 0.05）, but no relations were found between RhoC expression and tumor size, differentiation degree and TNM stage （P 〉 0.05）. The RhoC positive expression group had a shorter survival time than the RhoC negative expression group （P 〈 0.001. The expression of G3BP protein correlated positively with the expression of RhoC in ESC tissues （rs = 0.656, P 〈 0.001）.
CONCLUSION： The expression of G3BP and RhoC protein is closely related to the lymph node metastasis and survival in ESC patients. G3BP and RhoC proteins can be considered as predictors of prognosis in ESC patients.     

食管鳞癌中基质金属蛋白酶-7的表达及意义

目的:研究基质金属蛋白酶-7(MMP-7)在食管鳞癌中的表达情况及其与肿瘤浸润和淋巴结转移的关系。方法:用免疫组织化学法检测75例食管鳞癌组织及其相应正常粘膜中MMP-7的表达。结果:食管鳞癌组织MMP-7基因表达(59/75,78.7％)高于正常组织(P<0.01)。浸润到外膜层食管鳞癌(37/45,82.2％)与浸润至粘膜下层鳞癌(5/10,50.0％)之间MMP-7的高表达有显著性差异(P<0.05),淋巴结转移组MMP-7高表达(27/29,93.1％)高于淋巴结未转移组(P<0.05)。结论:MMP-7的高表达与食管鳞癌浸润深度和淋巴结转移有关,可能成为食管鳞癌恶性生物学行为的指标。