人端粒酶逆转录酶mRNA在胃癌组织中的定量表达及其与胃癌预后的关系

目的 探讨人端粒酶逆转录酶(hTERT)mRNA在胃癌组织中的表达,及其与胃癌生物学行为和根治术后患者预后的关系.方法 应用荧光定量逆转录聚合酶链反应(RT-PCR)检测89例胃癌根治性切除术后患者的肿瘤组织和阴性切缘组织中hTERT mRNA的表达量,对hTERT mRNA表达量与患者的临床病理参数(年龄、性别、肿瘤大小、肿瘤部位、病理类型、组织分化程度、浸润深度、淋巴结转移情况、pTNM分期及生存期)进行单因素分析,采用Cox模型进行胃癌患者生存的多因素分析.结果 hTERT mRNA在阴性切缘组织中的表达量为11.37±2.15,在胃癌组织中的表达量为16.98±3.56,差异有统计学意义(P<0.05).胃癌组织中hTERT mRNA的表达量与组织学分级、浸润深度、pTNM分期及淋巴结转移呈正相关(P<0.05),与胃癌患者的生存期呈负相关(P<0.01).结论 胃癌组织中hTERT mRNA高表达表明胃癌恶性程度较高且病期较晚,检测胃癌组织中hTERTmRNA的表达水平有助于对胃癌患者的预后做出更准确的判断.胃癌组织中hTERT mRNA的表达量、肿瘤浸润深度和pTNM分期是影响胃癌患者预后的重要因素.

Abstract：

Objective By quantitative detection of telomerase expression, we investigated the relationship between telomerase expression and malignant behavior and prognosis in gastric carcinoma.Methods A real-time quantitative RT-PCR (RQ-PCR) was used to quantify the hTERT mRNA copy numbers in 89 samples of gastric carcinoma and corresponding non-cancerous tissues.The clinicopathological data of enrolled patients such as age, sex, tumor size, tumor site, pathologic type, histodifferentiation,infiltration depth, lymph node metastasis, stage and survival were obtained, and were made one factor analysis of variance and COX regression prognostic analysis with those above mentioned markers.Follow-up was completed as of February 28, 2010.The median follow-up was 24 months.Results hTERT from gastric carcinomas and corresponding non-cancerous tissues was 16.98 ± 3.56 and 11.37 ± 2.15, respectively (P<0.05 ),the telomerase activity in gastric cancer was significantly higher than that in non-cancerous tissue ( P < O.05 ).Telomerase activity showed a positive correlation with depth of invasion, tumor differentiation and nodal metastasis ( P < 0.01 ), and negative correlation with survival.Conclusions Gastric cancer with high hTERT mRNA expression indicates a more malignant potential.Detection of hTERT mRNA in gastric cancer may be useful in a better understanding of invasion, metastasis, as well as prognosis of gastric cancer and provide a more efficient therapy.The quantitative expression of hTERT mRNA, infiltration depth and pTNM stage are significant afactors affecting the prognosis of patients with gastric carcinoma.     

基质金属蛋白酶-3和骨桥蛋白在子宫颈癌组织中的表达及其临床意义

目的 探讨基质金属蛋白酶-3(MMP-3)和骨桥蛋白(OPN)在子宫颈癌组织中的表达及与子宫颈癌浸润转移的关系.方法 采用免疫组织化学SP法检测54例子宫颈癌组织中MMP-3和OPN的表达,并对其与临床病理特征的关系进行分析,以15例正常子宫颈组织为对照.结果 MMP-3和OPN在子宫颈癌组织中的阳性表达率分别为70.37%、66.7%,高于正常子宫颈组织的20%、0;子宫颈间质浸润深度>1/2的阳性表达率显著高于间质浸润深度≤1/2者(P<0.05);子宫颈癌有淋巴结转移者MMP-3和OPN的阳性表达率显著高于无转移者(P<0.05),其表达与浸润深度、淋巴结转移相关.MMP-3与OPN的表达呈显著正相关(r=0.401,P<0.05).结论 MMP-3和OPN与子宫颈癌的浸润转移有关.

Abstract：

Objective To study the expressions of matrix metalloproteinase-3 (MMP-3) and osteopontin (OPN) in cervical carcinoma and their relationship with invasion and metastasis. Methods The expression of MMP-3 and OPN were detected in 54 cases of cervical cancer tissues by immunohistochemical SP method. Compared with 15 cases of normal cervical tissues, the relationship was analyzed between both protein expressions and clinical pathology. Results The expression positive rates of MMP-3 and OPN in cervical cancer tissues (70.37 % and 66.7 %, respectively) were significantly higher than those of normal cervical tissues (20 % and 0, respectively), were significantly higher with infiltration depth >1/2 and lymph node metastasis than those with depth≤1/2 and without metastasis , respectively(P <0.05). The expressions of MMP-3 and OPN were related with depth of cervical infiltration and lymph node metastasis of cervical cancer.Expressions between MMP-3 and OPN were significantly positively correlation(r =0.401, P<0.05). Conclusion The expressions of MMP-3 and OPN are correlated with invasion and metastasis of cervical carcinoma.     

RhoA和核因子κB在胃癌中的表达及其临床意义

目的 探讨RhoA和核因子κB(NF-κB)在胃癌组织中的表达,分析其与胃癌患者临床病理特征及预后的关系.方法 利用免疫组化、组织芯片技术检测189例胃癌、54例相应癌旁及32例正常胃黏膜组织中RhoA蛋白和NF-κB蛋白的表达.用Kaplan-Meier法行单因素生存分析,应用Cox回归模型进行多因素生存分析.结果 RhoA蛋白在胃癌、癌旁和正常胃黏膜组织中的表达阳性率分别是84.7%、68.5%和65.6%,胃癌与癌旁及正常胃黏膜组织的阳性率差异有统计学意义(P＜0.05).NF-κB蛋白在胃癌、癌旁和正常胃黏膜组织中的表达阳性率分别是75.1%、42.6%和15.6%,且三者的阳性率相互比较,差异均有统计学意义(P＜0.05).RhoA和NF-κB在胃癌组织中的蛋白表达呈正相关(r=0.203,P=0.005).RhoA的蛋白表达与胃癌的浸润深度有关(P＜0.05).NF-κB的蛋白表达与胃癌的浸润深度和有无淋巴结转移有关(P＜0.05).单因素分析结果显示,肿瘤大小、有无淋巴结转移、浸润深度和NF-κB的蛋白表达影响胃癌患者术后的生存(P＜0.05);多因素回归分析结果显示,NF-κB蛋白表达、有无淋巴结转移和浸润深度为影响胃癌患者预后的独立因素(均P＜0.05).结论 RhoA和NF-κB参与胃癌的发生、发展,并在胃癌的浸润和转移中起重要作用;NF-κB的蛋白表达水平、有无淋巴结转移和浸润深度是影响胃癌患者预后的独立因素.

Abstract：

Objective To investigate the expression of RhoA and NF-κB in gastric carcinoma and their correlation with clinicopathological fearures.To determine the effective prognostic factors of long-term suivival of gastric carcinoma patients.Methods The role of RhoA and NF-κB in gastric carcinoma was assessed by tissue array technology and the levels of RhoA and NF-κB expression in paraffin-embedded tissues was quantified by immunohistochemistry from 189 cases of gastric carcinoma, 54 cases of their adjacent tissues, and 32 cases of normal gastric mucosa.The prognosis of gastric carcinoma was evaluated by Kaplan-Meier survival analysis and Cox multivariate regression analysis.Results The positive rates of RhoA expression were 84.7%, 68.5% and 65.6% in gastric carcinoma, adjacent tissues and normal mucosa, respectively.The expression of RhoA in gasric carcinoma was significantly higher than that in adjacent tissues and normal mucosa ( P ＜ 0.05 ).The positive rates of NF-κB expression were 75.1%,42.6% and 15.6%% in gastric carcinoma, adjacent tissues and normal mucosa, respectively.The expression of NF-κB in gasric carcinoma was significantly higher than that in adjacent tissues and normal mucosa (P ＜ 0.05 ).RhoA was positively linked with NF-κB ( r = 0.203, P = 0.005 ).In gastric carcinoma, the expression of RhoA was related with depth of invasion (P ＜ 0.05), and the expression of NF-κB was related with depth of invasion and lymph node metastasis ( P ＜ 0.05 ).The Kaplan-Meier survival analysis showed that the tumor size, lymph node metastasis, depth of invasion, expression of RhoA and NF-κB can shorten the cumulative survival rate.With these paramaters entering the Cox multivariate regression analysis mode, it was revealed that expression of NF-κB, lymph node metastasis and depth of invasion are independent prognostic factors.Conclusions The overexpression of RhoA and NF-κB is involved in the occurrence and development of gastric carcinoma.RhoA is positively linked with NF-κB.They are correlated with the invasion and metastasis of gastric carcinoma.The expression of NF-κB, lymph node metastasis, depth of invasion are independent prognostic factors playing an important role in prediction of the clinical outcome after radical resection of gastric carcinoma.     

血管内皮生长因子-D在胃癌中表达的意义

Objective： To investigate the expression of vascular endothelial growth factor D （VEGF-D） in gastric cancer and its relationship with lymph node metastasis. Methods： 100 cases of gastric carcinoma tissues （50 cases with lymph node metastasis, 50 cases negative） and 30 cases of normal gastric tissues were gathered to detect the expressions of VEGF-C and D proteins by immunohistochemistry. Results： VEGF-C and D were revealed in cytoplasm of gastric carcinoma tissues and normal gastric tissues. The positive rates of VEGF-C and D expressions were significantly higher in gastric cancer tissues than those in the normal ones （51%, 60% vs 10%, 20% respectively; both P 〈 0.05）. There were significant correlations between the positive expression of VEGF-D and lymph node metastasis, lymphatic invasion, positive expression of VEG F-C, but not with tumour size, tissue differentiation, and venous invasion. Conclusion： The expression of VEGF-D is closely related to lymph node metastasis in gastric carcinoma.     

非小细胞肺癌组织中DNA切除修复交叉互补基因1mRNA的表达及其对预后的影响

目的 探讨非小细胞肺癌(NSCLC)组织中DNA切除修复交叉互补基因1(ERCC1)的表达水平,及其对NSCLC患者预后的影响.方法 采用实时定量PCR技术检测60例NSCLC患者的癌组织及癌旁正常组织中ERCCI mRNA表达水平,采用Kaplan-Meier单因素与Cox多元回归进行生存分析.结果 NSCLC患者癌组织和癌旁相应正常组织中ERCCI mRNA的表达水平分别为-7.85 4±3.86和-11.194±5.03,差异有统计学意义(t=3.973,P=0.000).60例NSCLC中,ERCCI mRNA 高表达43例(71.6%),低表达17例(28.3%).Kaplan-Meier法生存分析显示,ERCCI mRNA高表达患者的生存率显著低于低表达患者(P=0.0003),淋巴结转移患者的生存率低于无淋巴结转移患者(P=0.026),有肿瘤家族史患者的生存率低于无肿瘤家族史患者(P=0.049),病理分级高的患者生存率低于病理分级低的患者(P=0.031).Cox回归分析结果显示,ERCCI mRNA表达水平、有无淋巴结转移、病理分级和是否吸烟是影响NSCLC患者术后生存的独立危险因素.结论 NSCLC组织中ERCCI高表达的患者术后生存时间较短.ERCCI mRNA表达水平、有无淋巴结转移、病理分级、肿瘤家族史和是否吸烟可作为评价NSCLC患者预后的参考指标.

Abstract：

Objective To investigate the level of ERCC1 mRNA expression in non-small cell lung cancer and analyze the influencing factors of the survival of patients after operation. Methods The level of ERCC1 mRNA expression was quantified in sixty pairs of non-small cell lung cancer tissue and their matched normal lung tissues by real-time PCR assay. The survival of patients was analyzed by univariate Kaplan-Meier and Cox regression analysis. Results The level of ERCC1 mRNA expression in cancer tissues ( -7.85 ±3.86) was significantly higher than that in matched normal ones ( - 11. 19 ±5.03;t=3.973, P=0.000). Up-regulation of ERCC1 mRNA was found in 43 of 60 (71.7% ) lung cancer tissues compared with that in the matched normal lung tissues (17 of 60, 28.3% ). The univariate survival analysis by Kaplan-Meier method showed that the survival rate of patients with high ERCC1 mRNA expression was lower than that in the patients with low expression of ERCC1 mRNA (P=0.000). Patients with lymph node metastasis, smoking, cancer family history, or high pathological grade had significantly shorter survaival time than those without lymph node metastasis, smoking, cancer family history, or with low pathological grade. Cox regression survival analysis showed that the level of ERCC1 mRNA expression, lymph node metastasis, smoking, and pathological grade were significant independent factors affecting the survival rate. Conclusions Non-small cell lung cancer patients with up-regulated ERCC1 expression have a poor survival. The expression of ERCC1 mRNA, lymph node metastasis, pathological grade, cancer family history and smoking can be used as prognostic indicator of non-small cell lung cancer.     

Expression and Clinical Significance of REGy in Gastric Cancer Tissue and Variously Differentiated Gastric Cancer Cell Lines

OBJECTIVE To evaluate the REGy expression in gastric cancer tissue and gastric cancer cell lines of various differentiation levels and its clinical significance.METHODS Immunohistochemistry was used to detect the expression of REGy protein in 70 specimens of gastric cancer and 30 specimens of normal gastric mucosa. The relationship between the expression of REGy protein and the biological behaviors of gastric cancer was analyzed. RT-PCR and Western blot were used to detect the mRNA level and the protein expression of REGγ in normal gastric cell line GES-1, well differentiated gastric cancer cell line MKN-28, moderately differentiated gastric cancer cell line SGC-7901 and poorly differentiated gastric cancer cell line BGC-823.RESULTS The expression rate of REGγprotein in gastric cancer tissue (52/70, 74.29%) was significantly higher than that in normal gastric tissue (12/30, 40%) (P<0.01). The expression rate of REGywas correlated with tumor size (P<0.01), lymph node metastasis (P<0.05), differentiation degree (P<0.01), infiltration depth (P<0.01)and distant metastasis (P<0.05). RT-PCR analysis showed that theexpression of REGγ mRNA was 0.459±0.079 in the normal gastric mucosa cell line, 0.588±0.118 in the well differentiated gastric cancer cell line, 0.715±0.066 in the moderately differentiated gastric cancer cell line, and 0.873±0.099 in the poorly differentiated gastric cancer cell line, showing a negative correla- tion between REGγmRNA expression and differentiation level (P <0.05). Western blot analysis showed that the expression of REGy protein was 0.712±0.065 in the normal gastric mucosa cell line, 1.176±0.185 in the well differentiated gastric cancer cell line, 1.533 ±0.127 in the moderately differentiated gastric cancer cell line, and 2.061±0.398 in the poorly differentiated gastric cancer cell line, showing a negative correlation between REGγprotein expression and differentiation level (P<0.05).CONCLUSION REGγ is expressed in gastric cancer tissue and normal gastric tissue. In gastric cancer tissues, REGγexpression is positively correlated with the tumor size, lymph node metastasis,differentiation degree, infiltration depth and distant metastasis. Detecting the expression of REGy mRNA and protein is helpful for early diagnosis and predicting prognosis of gastric cancer.     

胃癌组织中Ets-1的表达及其与血管生成临床病理特征和预后的关系

Objective To investigate the expression of Ets-I in gastric carcinoma,pars-cancerous tissue and metastatic lymph nodes,and to determine the relationship between Ets-1 expression and clinicopathological features,angiogenesis and survival of patients with gastric carcinoma.Methods Gastric carcinoma tissue microarray was used to determine Ets-I protein expression by SP immunohistochemical staining in 189 advanced gastric cancer,54 papacancerous tissues,41 metastatic lymph nodes and 32 control tissues.Results The positive rates for Ets-1 expression of the carcinoma,paracancerous and control tissues were 71.4 %,29.6% and 18.8%,respectively,with a significant difference among the three groups(P ＜0.01).In the cancer tissues,the positive rate of Ets-1 protein expression was significantly associated with depth of invasion and lymph node metastasis(P ＜0.01),but not associated with degree of differentiation,Lauren's histological type,sex,age,and size of tumor(P ＞0.05).The positive rates for Ets-1 expression of the 41 gastric cancer and 41 metastatic lymph nodes were significantly different(P ＜0.05).In metastatic lymph nodes,the positive rate for Ets-1 expression was higher.The MVD in Ets-1 positive tumors was higher than that in the Ets-1 negative tumors,with a significant difference(P ＜ 0.05).Kaplan-Meier survival analysis showed that the survival time of Ets-1-negative patients was longer than that of Ets-1-positive patients (P ＜0.05).Cox regression analysis showed that Ets-1 expression was not an independent prognostic factor of gastric carcinoma.Conclusion A higher expression of Ets-1 is involved in carcinogenesis,development,invasion,and metastasis of gastric cancer.Ets-1 plays an important role in angiogenesis in gastric cancer.Ets-1 is a useful marker for predicting the outcome for patients with gastric carcinoma,though it is not an independent prognostic indicator.     

Expression and clinical significance of REGγ in gastric cancer tissue and variously differentiated gastric cancer cell lines

OBJECTIVE To evaluate the REGγ expression in gastric cancer tissue and gastric cancer cell lines of various differentiation levels and its clinical significance. METHODS Immunohistochemistry was used to detect the expression of REGγ protein in 70 specimens of gastric cancer and 30 specimens of normal gastric mucosa. The relationship between the expression of REGγ protein and the biological behaviors of gastric cancer was analyzed. RT-PCR and Western blot were used to detect the mRNA level and the protein expression of REGγ in normal gastric cell line GES-1, well differentiated gastric cancer cell line MKN-28, moderately differentiated gastric cancer cell line SGC-7901 and poorly differentiated gastric cancer cell line BGC-823. RESULTS The expression rate of REGγ protein in gastric cancer tissue （52/70, 74.29%） was significantly higher than that in normal gastric tissue （12/30, 40%） （P 〈 0.01）. The expression rate of REGγ was correlated with tumor size （P 〈 0.01）, lymph node metastasis （P 〈 0.05）, differentiation degree （P 〈 0.01）, infiltration depth （P 〈 0.01） and distant metastasis （P 〈 0.05）. RT-PCR analysis showed that the expression of REGγ mRNA was 0.459 ± 0.079 in the normal gastric mucosa cell ling 0.588 ±0.118 in the well differentiated gastric cancer cell line, 0.715±0.066 in the moderately differentiated gastric cancer cell line, and 0.873 ± 0.099 in the poorly differentiated gastric cancer cell line, showing a negative correlation between REGγ mRNA expression and differentiation level （P 〈 0.05）. Western blot analysis showed that the expression of REGγ protein was 0.712±0.065 in the normal gastric mucosa cell line, 1.176±0.185 in the well differentiated gastric cancer cell line, 1.533 ± 0.127 in the moderately differentiated gastric cancer cell line, and 2.061± 0.398 in the poorly differentiated gastric cancer cell line, showing a negative correlation between REGγ protein expression and differentiation level （P 〈 0.05）. CONCLUSION REGγ is expressed in gastric cancer tissue and normal gastric tissue. In gastric cancer tissues, REGγ expression is positively correlated with the tumor size, lymph node metastasis, differentiation degree, infiltration depth and distant metastasis. Detecting the expression of REGγ mRNA and protein is helpful for early diagnosis and predicting prognosis of gastric cancer.     

基质金属蛋白酶及其抑制剂在乳腺癌中的表达及其临床意义

背景与目的:基质金属蛋白酶(matrixmetalloproteinase,MMP)与基质金属蛋白酶组织抑制剂(tissueinhibitorofmatrixmetalloproteinase,TIMP)的表达失平衡在肿瘤侵袭、转移过程中起重要作用,但与乳腺癌预后关系的报道少见。本研究探讨MMP-2、MMP-9和TIMP-1、TIMP-2的表达与乳腺癌侵袭、转移和预后的关系。方法:原位杂交、免疫组化检测66例有临床和随访资料的乳腺癌患者的MMP-2mRNA、TIMP-2mRNA和MMP-2、MMP-9、TIMP-1、TIMP-2蛋白表达。统计学分析采用χ2检验、Kaplan-Meier和Cox多因素回归分析。结果MMP-2mRNA、TIMP-2mRNA和MMP-2、MMP-9、TIMP-1TIMP-2蛋白的阳性表达率分别为66.7%(44/66)、65.2%(43/66)和71.2%(47/66)、68.2%(45/66)、40.9%(2766)、69.7%(46/66),其中MMP-2蛋白与MMP-2mRNAMMP-9蛋白及TIMP-2mRNA与TIMP-2蛋白的表达存在显著性正相关(P<0.01);TIMP-1与MMP-9蛋白表达呈负相关(P<0.01)。有淋巴结转移的乳腺癌中MMP-2、MMP-9蛋白表达显著高于无转移者,但TIMP-2mRNA、TIMP-1蛋白表达显著低于无转移者(P<0.05)。乳腺癌中MMP-2mRNA和MMP-9蛋白表达与肿块大小、生存状况有显著性相关(P0.05),此外,MMP-9蛋白表达与临床分期存在正相关性(P<0.01)。绝经和ER表达阴性患者的MMP-2mRNA表达水平增高(P<0.     

乳腺癌组织中 VEGF-D、MMP-2及 MMP-9的表达及其临床意义

目的：探讨乳腺癌组织中基质金属蛋白酶-2（MMP-2）、基质金属蛋白酶-9（MMP-9）和血管内皮生长因子D（ VEGF-D）表达的临床意义。方法采用免疫组化法,对60例乳腺癌组织及60例正常组织中 MMP-2、MMP-9及VEGF-D表达情况进行检测。结果60例乳腺癌组织中,MMP-2、MMP-9阳性表达率分别为61．67％、56．67％,VEGF-D阳性表达率为61．67％。 MMP-2、MMP-9及VEGF-D阳性表达率Ⅲ～Ⅳ期者显著高于Ⅰ～Ⅱ期者;低分化者显著高于高、中分化者;有淋巴结转移者显著高于无淋巴结转移者;且MMP-2与VEGF-D表达,MMP-9与VEGF-D表达均呈正相关性。结论低分化、Ⅲ～Ⅳ期乳腺癌患者高表达MMP-2、MMP-9与VEGF-D,MMPs与VEGF-D表达呈正相关性,可通过阻断VEGF-D及MMPs活性控制、治疗乳腺癌。     

MMP-2和E-cadherin蛋白在食管黏膜病变中的表达

目的： 探讨MMP-2和E-cadherin蛋白在食管黏膜病变中的表达及其与食管癌的发生及转移的关系。方法：采用免疫组织化学方法对45例食管癌组织、21例不典型增生组织、24例正常组织中MMP-2和E-cadherin蛋白的表达进行检测,并分析MMP-2和E-cadherin表达与食管癌发生发展过程中各项病理指标的关系。结果：MMP-2蛋白在癌组织中的表达率为40.00%(18/45),在不典型增生组织中的表达率为38.10% (8/21),在正常组织中表达率为4.17%(1/24),三者间差异具有统计学意义(P<0.05);有淋巴结转移组的MMP-2蛋白阳性表达率(55.56%,15/27)明显高于无淋巴结转移组(16.67%,3/18);有纤维膜浸润组MMP-2蛋白的阳性表达率(48.57%,17/35)明显高于无纤维膜浸润组(10.00%,1/10)。E-cadherin蛋白在正常的食管黏膜上皮组织阳性表达为100% (24/24),在不典型增生组织中的阳性表达率为71.43%(15/21),在癌组织中的阳性表达率为28.89%(13/45),较前两组明显降低(P<0.05)。E-cadherin与MMP-2蛋白的表达呈负相关(χ2=4.615,r=-0.793,P<0.05)。结论：MMP-2蛋白的高表达和E-cadherin蛋白的低表达可能与食管癌的发生和转移有关,在食管癌的侵袭、转移过程中MMP-2与E-cadherin有拮抗作用。     

结直肠癌中VEGF-C和MMP-2蛋白表达量与肿瘤侵袭转移关系的研究

目的:研究VEGF-C、MMP-2在结直肠癌中mRNA和蛋白水平的表达,分析其表达与临床病理特征间关系,探讨其在结直肠癌中的表达及其意义。方法:收集46例常熟市第二人民医院病理科2014年至2017年结直肠癌手术切除的新鲜肿瘤组织及20例癌旁正常组织。采用实时荧光定量逆转录聚合酶链反应方法检测46例结直肠癌与癌旁正常组织中VEGF-C mRNA、MMP-2的表达,应用免疫组织化学方法检测结直肠癌与癌旁正常组织VEGF-C、MMP-2蛋白的表达,分析VEGF-C mRNA、MMP-2 mRNA和蛋白表达与临床病理分期特征间关系。结果:46例结直肠癌中VEGF-C mRNA（P<0.05）、MMP-2 mRNA（P<0.05）转录水平显著高于癌旁正常组织。VEGF-C mRNA转录水平与患者年龄、性别和肿瘤直径等无相关性（P>0.05）,与组织学分级、TNM分期、淋巴结和远处转移等有相关性（P<0.05）;MMP-2 mRNA转录水平与年龄、性别、肿瘤直径、淋巴结和远处转移等无相关性（P>0.05）,而与组织学分级、TNM分期上有统计学差异（P<0.05）。VEGF-C蛋白表达量与性别、肿瘤直径和远处转移无相关性（P>0.05）,而与患者年龄、淋巴结转移、组织学分级和TNM分期等相关（P<0.05）;MMP-2蛋白表达量与年龄、性别、肿瘤直径和远处转移无相关性（P>0.05）,只与组织学分级和TNM分期等相关（P<0.05）。两基因间mRNA转录水平与蛋白表达水平呈线性相关性（P<0.01）。结论:VEGF-C、MMP-2蛋白的高表达与结直肠癌细胞侵袭及转移过程的发生密切相关,可为作潜在靶向标志物,为临床上进一步诊断治疗及预后提供理论依据。     

MMP-2和EGFR在胃癌中的表达及其与生物学特征的关系

目的探讨胃癌组织中EGFR与基质金属蛋白酶-2（MMP-2）的表达及其与胃癌生物学特征的关系。方法采用免疫组化方法检测64例胃癌原发灶标本中EGFR和MMP-2的表达,并观察其与胃癌生物学特征的关系以及EGFR与MMP-2表达的相关性。结果 64例胃癌组织中,EGFR和MMP-2的表达阳性率分别为31.3%（20/64）和68.8%（44/64）;EGFR的过度表达与胃癌临床分期、有无淋巴结转移、TNM分期及组织分化程度相关（P〈0.05）;MMP-2的表达与胃癌临床分期、有无淋巴结转移及TNM分期亦相关（P〈0.05）,但与组织分化程度无明显相关（P〉0.05）;且EGFR的表达与MMP-2的表达存在相关性（P〈0.05）。结论胃癌组织中EGFR的表达与MMP-2的表达密切相关,EGFR、MMP-2的表达水平可作为了解胃癌生物学行为和判断预后的指标。     

MCM7及MMP-7蛋白在胃癌组织中的表达

目的 探讨微小染色体维持蛋白7 (MCM7)及基质金属蛋白酶-7(MMP-7)在胃癌组织中的表达及意义.方法 采用免疫组化S-P法检测MCM7及MMP-7蛋白在85例胃癌、30例癌旁不典型增生、30例正常胃黏膜组织中的表达,并分析两者与胃癌患者临床病理学特征的关系.结果 MCM7及MMP-7蛋白在胃癌组织中的表达高于癌...     

基质金属蛋白酶-2和组织蛋白酶D与胃癌生物学行为及腹膜转移的关系

目的:探讨基质金属蛋白酶-2(matrixmetalloproteinase-2,MMP-2)和组织蛋白酶D(cathepsinD,CD)在胃癌组织中的表达与胃癌生物学行为、腹膜转移的关系。方法:应用免疫组织化学方法检测55例胃癌MMP-2和CD表达情况。其中45例行腹腔脱落细胞学检查。结果:MMP-2和CD与浸润深度、胃浆膜分型、腹腔脱落癌细胞和临床分期密切相关(P<0.01);CD与淋巴结转移显著相关(P<0.01),MMP-2与淋巴结转移无明显关系,但淋巴结转移阳性者MMP-2表达率高于淋巴结转移阴性者。结论:MMP-2和CD高表达胃癌具有更强的侵袭、淋巴结转移能力及腹膜转移倾向。MMP-2和CD能较好的反映胃癌的恶性生物学行为,有助于判断预后。结转移显著相关(P<0.01),MMP-2与淋巴结转移无明显关系,但淋巴结转移阳性者MMP-2表达率高于淋巴结转移阴性者。结论:MMP-2和CD高表达胃癌具有更强的侵袭、淋巴结转移能力及腹膜转移倾向。MMP-2和CD能较好的反映胃癌的恶性生物学行为,有助于判断预后。     

基质金属蛋白酶-7基因表达与胃癌生物学行为及腹膜转移的关系

[目的]探讨基质金属蛋白酶-7基因表达与胃癌生物学行为及腹膜转移的关系.[方法]应用RT-PCR方法检测45例胃癌组织和腹腔冲洗液或腹水中MMP-7 mRNA水平,同时参照GAPDH含量.[结果]胃癌组织MMP-7基因增高表达与浸润深度、淋巴结转移程度、TNM分期和胃浆膜型密切相关(P＜0.05).腹腔冲洗液或腹水MMP-7基因表达增高与胃癌淋巴结转移程度及腹膜转移呈正相关(P＜0.01).[结论]MMP-7高表达胃癌具有更强的侵袭、淋巴结转移能力及腹膜转移倾向.     

CD147和MMP-9在结直肠癌组织中的表达及临床意义

目的 探讨CD147和基质金属蛋白酶（MMP）-9在结直肠癌中的表达及临床意义。方法 采用免疫组化法检测60例结直肠癌和50例癌旁组织中CD147和MMP-9的表达,并分析两者表达与结直肠癌临床病理特征的关系。结果 结直肠癌组织中CD147及MMP-9的阳性表达率分别为86.7％和85.0％,高于癌旁组织中的20.0％和15.0％（P＜0.05）。两者表达与年龄、性别、肿瘤部位、分化程度、pTNM分期、淋巴结转移、浸润深度和远处转移均无关。CD147和MMP-9在结直肠中的表达呈正相关（r=0.470,P＜0.001）。结论 MMP-9及其诱导因子CD147在结直肠癌组织中高表达,两者与结直肠癌发生、发展的关系需进一步研究。