Altered plasma matrix metalloproteinase-9/tissue metalloproteinase-1 concentration during the early postoperative period in patients with colorectal cancer

Background The authors have previously demonstrated that insulin-like growth factor binding protein-3 (IGFBP-3) is depleted in plasma for 1 to 3 days after major open surgery (OS), but not after laparoscopic surgery (LS). After surgery, IGFP-3 cleavage occurs rapidly and is likely attributable to altered plasma proteolytic activity. This study aimed to assess plasma proteolysis after both open and closed colorectal resection and, if possible, to identify a protease/protease inhibitor system affected by surgery. Methods Plasma from 88 patients with colorectal cancer (stages I–III) who underwent resection was obtained preoperatively (pre-OP) and on postoperative days (POD) 1 to 3. Plasma proteolytic activity was assessed via zymography. On the basis of the results, specific protease and protease inhibitor concentrations were next measured via enzyme-linked immunoassay (ELISA). Statistical analysis was performed using Wilcoxon’s test. Results Early after surgery, zymography showed a predominant band representing a 92-kDa gelatinase corresponding to a proform of matrix metalloproteinase-9 (MMP-9), a protease known to cleave IGFBP-3. In OS patients, the mean concentration of plasma MMP-9 was significantly higher on POD 1 than at pre-OP (p < 0.003). On POD 2 and 3, no differences were noted. In the LS group, the mean levels of MMP-9 before and after surgery were comparable. The levels of a natural MMP-9 inhibitor, tissue inhibitor of metalloproteinase-1 (TIMP-1), also were measured. In the OS group, the level of TIMP-1 was significantly higher on POD 1 (p < 0.0003) and POD 2 (p < 0.01) and 3 (p < 0.01) than at pre-OP. In the LS group, a smaller but significant increase in TIMP-1 levels was found between the pre-OP sample and the POD 1 (p < 0.01) and POD 2 (p < 0.01) samples. No difference was noted on POD 3 (p = 0.1). Conclusions Open surgery, but not laparoscopic surgery, is accompanied by a short-lived significant increase in MMP-9 levels, which likely accounts for the decrease in IGFBP-3 levels observed after OS. The transitory nature of MMP-9 imbalance may be attributable to the increase in TIMP-1 levels postoperatively. An erratum to this article is available at .     

罗格列酮抑制环孢素诱导的大鼠肾脏成纤维细胞基质金属蛋白酶9和金属蛋白酶1组织抑制剂表达

目的 观察罗格列酮(RGZ)对环孢素A(CsA)作用下大鼠肾脏成纤维细胞(NRK)过氧化物酶体增生物激活受体γ(PPARγ)和基质金属蛋白酶-9(MMP-9)表达的影响,探讨罗格列酮对环孢素A肾毒性保护作用的分子机制.方法 构建、筛选和扩增PPARγ基因的siRNA载体,并将载体转染至体外培养的NRK细胞.体外培养NRK细胞,随机分组.(1)对照组:不加处理;(2)RGZ组:加RGZ( 10 μmol/L);(3)CsA组:加CsA( 1.0 mg/L);(4)CsA+RGZ 组:同时加CsA( 1.0 mg/L)及RGZ(10 μmol/L);(5)CsA+RGZ+siRNA组:质粒pRNAT- U6.2/LentiPPARγ-236转染NRK细胞,然后同时加入CsA( 1.0 mg/L)及RGZ(10 μmol/L).培养24 h后,用实时荧光定量和RT-PCR法检测各组细胞中PPARγ、MMP-9、金属蛋白酶1组织抑制剂(TIMP-1) mRNA表达,用Western印迹法检测纤连蛋白(FN)的蛋白表达.结果 CsA明显上调PPARγ、MMP-9和TIMP-1 mRNA的表达(均P＜0.05);RGZ与CsA合用后,PPARγ、MMP-9和TIMP-1 mRNA表达下降(均P＜0.05);应用PPARγ siRNA后,与RGZ+ CsA组相比,PPARγ mRNA表达显著下降(P＜0.05),MMP-9 mRNA和TIMP-1 mRNA表达有所增加(均P＜ 0.05).CsA明显上调FN蛋白表达(P＜0.05);RGZ与CsA合用后,FN蛋白表达下降(P＜0.05);应用含PPARγ siRNA后,FN蛋白表达有所增加(P＜0.05).结论 罗格列酮可以显著减轻CsA诱导NRK细胞分泌的FN蛋白及MMP-9、TIMP-1 mRNA的表达,构建的siRNA质粒转染NRK细胞,能够有效地阻断NRK中PPARγ mRNA的表达,部分阻断罗格列酮对CsA毒性的改善作用.     

大鼠脑动脉瘤形成过程中基质金属蛋白酶2和9及其抑制物的表达变化

目的观察基质金属蛋白酶（MMP）-2和MMP-9及其抑制物的表达变化在脑动脉瘤形成过程中的作用。方法制作肾性高血压大鼠脑动脉瘤模型，系统动态观察脑动脉瘤形成过程中MMP-2、MMP-9及其特异性抑制物（TIMP-1）表达的变化。结果实验组在术后1周脑动脉壁即可见MMP-2、MMP-9、TIMP-1表达增加，随着血压的升高，其表达也迅速增加，术后1个月基本达最高峰并-直持续至4个月，其中MMP-9增加最为显著，约是正常状态的10倍，而MMP-2和TIMP-1的表达约是正常状态的2倍。对照组脑动脉壁MMP-2、MMP-9、TIMP-1也有微弱表达，且MMP-2表达较MMP-9略强。结论脑动脉壁MMP-2、MMP-9特别是MMP-9的过度表达是导致动脉瘤形成的主要原因之-     

基质金属蛋白酶-9及其抑制因子在肾细胞癌组织中的表达和意义

目的　探讨基质金属蛋白酶 9(MMP 9)和金属蛋白酶组织抑制因子 1(TIMP 1)在肾细胞癌中的表达及其与临床病理参数之间的关系。方法　采用免疫组织化学链霉菌抗生物素蛋白过氧化酶 (SP)法检测 5 5例肾细胞癌中MMP 9和TIMP 1的表达情况。结果　MMP 9、TIMP 1蛋白在肾细胞癌和正常肾组织中的阳性表达率各为 63 .63 %和 10 .0 0 % (P <0 .0 5 ) ;60 .0 0 %和10 .0 0 % (P <0 .0 5 )。在肾癌中 ,MMP 9蛋白表达与肿瘤Robson分期、肾包膜侵袭和淋巴结转移密切相关 (P <0 .0 5 ) ,而与组织学类型无关 (P >0 .0 5 ) ;TIMP 1蛋白表达与肾细胞癌的临床病理参数无关 (P >0 .0 5 )。结论　MMP 9蛋白高表达参与了肾癌的发展 ,MMP 9和TIMP 1的平衡失调可能在肾癌的侵袭转移中发挥重要作用。     

Expression of matrix metalloproteinase-7 and tissue inhibitor of metalloproteinase-2 in human endometrial carcinoma

<正>Objective:To investigate the expression of matrix metalloproteinase-7(MMP-7) and its tissue inhibitor (TIMP-2) in endometrial carcinoma and analyze their significance in endometrial cancer's invasion and metastasis. Methods:Endometrial tissues were collected from 64 patients with endometrial carcinoma,20 patients with endometrial hyperplasia and 20 normal women.The expressions of MMP-7,TIMP-2 in endometrium were measured by immuohistochemistry. Results;Expressions of MMP-7,TIMP-2 in endometrium of patients with endometrial carcinoma were significantly higher than those in normal endometrium(P0.05).MMP-7 expression increased with surgical-pathological staging,depth of myometrial invasion,histologic grades and lymph node metastasis(P0.05),while TIMP-2 expression was related to lymph node metastasis(P0.05).TIMP-2 expression in endometrial cancer was significantly higher than that in hyperplastic endometrium(P0.05).Expressions of TIMP-2 and MMP-7 in endometrium of patients with endometrial carcinoma were positively correlated(r=0.654,P0.001). Conclusion:Highly expressed MMP-7 and TIMP-2 in endometrium may be related to development,invasion and metastasis of endometrial cancers.     

罗格列酮联用维甲酸在体内对直肠癌HCT-15细胞COX-2、MMP-7、TIMP-1表达的影响

目的：研究罗格列酮（ROS）联用全反式维甲酸（ATRA）对直肠癌裸鼠移植瘤HCT-15细胞COX-2、MMP-7、TIMP-1表达的影响,并初步探讨其抗肿瘤的机制。方法：建立直肠癌裸鼠移植瘤模型,荷瘤裸鼠随机分为未用药组、ROS组（ROS 25 mg.kg-1.2d-1）、ATRA组（ATRA 11mg.kg-1.2d-1）、ATRA联用ROS组[（ROS 25 mg＋ATRA 11 mg）.kg-1.2d-1]。灌胃40 d后,观察各组裸鼠移植瘤体积变化;利用免疫组化SP法观察移植瘤细胞中COX-2、MMP-7、TIMP-1的表达。结果：1）用药3组瘤体体积与未用药组比较均缩小,差别有统计学意义（P〈0.05）,ATRA联用ROS组的荷瘤体积缩小更明显（P〈0.05）;ROS组与ATRA组瘤体体积相当（P〉0.05）;2）用药3组移植瘤细胞内COX-2、MMP-7、TIMP-1的表达与未用药组比较均降低（P〈0.05）,且ROS组与ATRA组移植瘤细胞内COX-2、MMP-7、TIMP-1下降更明显（P〈0.01）,ROS组与ATRA组移植瘤细胞内三者的表达相当（P〉0.05）。结论：ROS与ATRA均有一定的抑瘤作用,ROS与ATRA联用可发挥协同抗肿瘤的作用,可能是通过抑制移植瘤细胞内COX-2、MMP-7、TIMP-1的表达而实现。     

Platelet-derived growth factor stimulates matrix metalloproteinase-2 secretion in cultured human mesangial cells

Background. Platelet-derived growth factor (PDGF) is an important mediator of mesangial proliferative glomerulonephritis. Little is known about the role of PDGF in the regulation of intraglomerular extracellular matrix turnover. Method. Effects of PDGF on the secretion of matrix metalloproteinase-2 (MMP-2), tissue inhibitor of MMP-2 (TIMP-2), and type IV collagen by cultured human mesangial cells (HMCs) were examined in the present study. Secretion of MMP-2, TIMP-2, and type IV collagen by HMCs was quantified with an enzyme immunoassay. Collagenase activity of HMCs was evaluated by gelatin zymography. Results. Recombinant human PDGF (10–20 ng/ml) stimulated MMP-2 secretion by HMCs in a dose-dependent fashion. PDGF (20 ng/ml) increased TIMP-2 secretion by HMCs to a lesser extent. Enhanced activity of 72-kDa collagenase derived from HMCs incubated with PDGF was demonstrated by zymography. Although PDGF alone did not affect type IV collagen secretion by HMCs, PDGF increased type IV collagen secretion in the presence of TIMP. Conclusions. PDGF may contribute to intraglomerular matrix turnover by up-regulating secretion and activation of MMP-2 by HMCs. Received: January 24, 2001 / Accepted: September 13, 2002 Correspondence to:H. Osawa     

Reversion-inducing cysteine-rich protein with kazal motifs and matrix metalloproteinase-9 are prognostic markers in skull base chordomas

Prognosis of chordomas is difficult to predict based solely on histological findings. The purpose of this study was to assess expressions of reversion-inducing cysteine-rich protein with kazal motifs (RECK) and matrix metalloproteinase (MMP)-2, MMP-9 in skull base chordomas and to find out their correlations to outcome. Immunohistochemical study was performed in 19 samples (initial, n = 11; recurrent, n = 8) from 11 patients. The correlations among expression of RECK, MMP-2, MMP-9, and their prognostic values were analyzed. Significant correlation between RECK and MMP-9 was found, but there was no correlation found between MMP-2 and MMP-9. Higher MMP-9 expression significantly influenced outcome. Furthermore, MMP-9/RECK ratio showed significant correlation to outcome, showing their inverse relationship in the disease progress of skull base chordoma. RECK and MMP-9 can be valuable markers to predict prognosis in skull base chordomas.     

Distinct metalloproteinase excretion patterns in focal segmental glomerulosclerosis

Metalloproteinase-2 (MMP-2) and metalloproteinase-9 (MMP-9) degrade type IV collagen, and represent important tissue remodeling enzymes in several kidney disorders. In this study, we measured urinary levels of MMP-2, MMP-9, and the tissue inhibitors of metalloproteinases (TIMP-1 and TIMP-2) in patients with steroid-sensitive nephrotic syndrome (SSNS, n = 18, median age 5) and focal segmental glomerulosclerosis (FSGS, n = 16, median age 15). We found that urinary concentrations of MMP-2, MMP-9, TIMP-1, and TIMP-2 were significantly elevated in FSGS patients as compared to SSNS in both relapse and remission (p < 0.002). Furthermore, urinary levels of these enzymes are increased early on in the FSGS disease process (chronic kidney disease stages 1 and 2). The findings from this pilot study suggest that MMPs and TIMPs have the potential to represent candidate, early non-invasive biomarkers for diagnosis and/or response to therapy. In addition, they may represent therapeutic targets for preventing chronic kidney disease progression in FSGS.     

Connective tissue growth factor increases matrix metalloproteinase-2 and suppresses tissue inhibitor of matrix metalloproteinase-2 production by cultured renal interstitial fibroblasts

The involvement of gelatinase (matrix metalloproteinase-2 [MMP-2] and MMP-9) in the matrix remodeling and development of tubulointerstitial fibrosis has been studied recently, but relatively little is known about the regulators and the mechanisms controlling the activation and expression of gelatinase in renal fibroblasts. In these studies, the production and underlying signaling pathway for gelatinase by exogenous connective tissue growth factor (CTGF) treatment were investigated. Here, we show that CTGF acts as a potent promoter of the activation and expression of MMP-2, but not MMP-9 in normal rat kidney fibroblasts cell line (NRK-49F). We found that CTGF significantly increased the activity of MMP-2, as well as MMP-2 protein in conditioned medium and MMP-2 mRNA levels in cells. In studies to address the mechanisms involved in the regulation of MMP-2 activity, we found that the tissue inhibitor of matrix metalloproteinase-2 (TIMP-2), the inhibitor of MMP-2, decreased significantly when cells were treated with CTGF. Further studies showed that extracellular signal-regulated kinase (ERK) signaling is responsible for most of the CTGF-induced MMP-2 expression and TIMP-2 suppression. When NRK-49F fibroblasts were incubated with CTGF, activation of ERK1/2 signaling was observed. Suppression of ERK1/2 activation with nontoxic concentrations of PD98059, a specific inhibitor of ERK activation, was associated with a reduction of CTGF-stimulated MMP-2 activity and protein expression. In addition, the CTGF-mediated reduction of TIMP-2 activity and protein expression was prevented when ERK1/2 activation was inhibited by PD98059. These results provide evidence that CTGF augments activation of MMP-2 through an effect on MMP-2 protein expression and TIMP-2 suppression, and that these effects are dependent on the activation of the ERK1/2 pathway.     

不同发育时期胎儿皮肤中基质金属蛋白酶-9,2及金属蛋白酶-2抑制因子基因表达的变化

目的:研究基质金属蛋白酶-9(MMP-9)、基质金属蛋白酶-2(MMP-2)及其组织抑制因子(TIMP-2)在不同胎龄的胎儿皮肤中表达的变化特征及其可能的生物学意义.方法:用病理学技术检测不同发育时期胎儿皮肤的结构特征后,提取18例不同胎龄(13～33周)的胎儿皮肤总RNA后,分离mRNA,用RT-PCR方法检测这3种基因在不同组织中的表达变化规律.结果:MMP-9、MMP-2和TIMP-2基因在不同发育时期的胎儿皮肤组织中的表达变化规律相似.在早期妊娠胎儿皮肤中,这3种基因表达较弱,随着胎儿生长发育,MMP-9,MMp-2和TIMP-2基因表达逐渐增强,妊娠晚期的皮肤组织内,这3种基因表达产物的灰密度比值分别是妊娠早期的8.8、2.4和3.1倍,基因表达水平显著升高(P＜0.05).结论:MMP-9,2和TIMP-2对皮肤的生长发育、结构功能的维持以及创面修复具有重要的调节作用.妊娠早期,TIMP-2基因低表达可能与胎儿皮肤创面无瘢痕愈合相关,而妊娠晚期皮肤中TIMP-2基因表达增强可能是创面愈合后形成瘢痕的机制之一.     

The effects of sodium hyaluronate on mRNA expressions of matrix metalloproteinase-1,-3 and tissue inhibitor of metalloproteinase-1 in cartilage and synovium of traumatic osteoarthritis model

teoarthritis (OA)isadegenerativeprocessofjointscharacterizedbyprogressivedeteriorationanderosionofcartilage .TraumaticOAcausedbyjointsinjuryandoperationiscommonlyobserved .Intra articularinjectionofsodiumhyaluronate (HA )isnowwidelyusedintreatmentofOA .It…     

碱性成纤维细胞生长因子对大鼠烫伤创面中基质金属蛋白酶及其抑制剂的影响

目的　观察大鼠深Ⅱ度烫伤创面愈合过程中基质金属蛋白酶 (MMP) 2、MMP 7与金属蛋白酶组织抑制因子 2 (TIMP 2 )的变化以及创面外用碱性成纤维细胞生长因子 (bFGF)对其的影响。　方法　制作 30 %TBSA深Ⅱ度烫伤大鼠模型 ,分为单纯烫伤组和bFGF治疗组。于伤后 3、6h和 1、3、7、14d取创面皮肤标本 ,检测再上皮化率及胶原含量 ,并采用免疫组织化学染色法检测创面组织真皮内成纤维细胞MMP 2、MMP 7和TIMP 2的表达变化。另取 6只正常大鼠作为假烫组 ,分别检测上述各项指标。　结果　 (1)伤后 3～ 14d ,bFGF治疗组再上皮化率高于单纯烫伤组。 (2 )伤后 3h～ 3d ,bFGF治疗组和单纯烫伤组胶原含量持续下降 ,7～ 14d开始回升 ,但仍低于假烫组 (P<0 .0 5 )。 (3)伤后 1d ,单纯烫伤组MMP 2、MMP 7和TIMP 2表达增多 ,7d时达到高峰 ,持续到 14d。(4 )伤后 3～ 6h,bFGF治疗组MMP 2、MMP 7的表达与单纯烫伤组相似 ;伤后 1～ 14d ,3者的阳性表达强于单纯烫伤组。　结论　烫伤大鼠创面中细胞外基质的活动会影响皮肤的胶原沉积 ;MMP 2、MMP 7、TIMP 2的表达变化是组织修复的重要步骤 ,与bFGF加速创面愈合的过程密切相关。     

基质金属蛋白酶-12及其组织抑制物-1在皮肤鳞状细胞癌中的表达及意义

目的：检测基质金属蛋白酶-12（MMP-12）及其组织抑制物-1（TIMP-1）在皮肤鳞状细胞癌（SCC）中的表达并探讨其与肿瘤分化、淋巴转移的关系。方法：免疫组化法检测MMP-12及TIMP-1在20例正常皮肤组织和32例鲍温病（BD）、53例SCC患者皮损中的表达。结果：在正常人皮肤和BD患者皮损中,MMP-12不表达,TIMP-1呈弱阳性表达,而两者在皮肤SCC患者皮损中均呈弥漫表达,MMP-12在SCC患者瘤组织中表达阳性率为92.4%,在低分化组或有淋巴结转移组中的表达明显高于高分化组（P=0.009）或无淋巴结转移组（P=0.01）;TIMP-1在SCC患者皮损中表达阳性率为84.9%,在高分化组或无淋巴结转移组中的表达明显高于低分化组（P=0.005）或有淋巴结转移组（P=0.01）。结论：MMP-12、TIMP-1蛋白的表达可能与SCC的癌分化和转移有关,MMP-12高表达与TIMP-1低表达提示SCC肿瘤细胞可能有较高的侵袭潜能。     

子宫内膜癌组织中基质金属蛋白酶-7及其组织抑制剂-2的表达

目的探讨子宫内膜癌(EC)组织中基质金属蛋白酶-7(MMP-7)及其组织抑制剂-2(TIMP--2)的表达,分析其与EC侵袭、转移的关系。方法选取64例EC组织标本及同期子宫内膜不典型增生组织标本20例、正常子宫内膜20例为对照组。用免疫组织化学方法检测MMP-7、TIMP-2的表达。结果 MMP-7在EC中阳性表达强度显著高于正常子宫内膜(P0.05);与不典型增生组比较差异无统计学意义(P0.05);MMP-7的阳性表达强度在不典型增生组高于正常内膜组(P0.05);MMP-7与手术-病理分期、肌层浸润深度、组织学分级及淋巴结的转移相关(P0.05)。TIMP-2在EC中阳性表达强度显著高于正常子宫内膜组和不典型增生组(P0.05);正常子宫内膜组和不典型增生组比较TIMP-2的表达无统计学意义(P0.05);TIMP-2仅与有无淋巴结转移有关(P0.05)。MMP-7和TIMP-2在EC组织中的表达呈正相关性(r=0.654,P0.001)。结论 MMP-7与TIMP-2在EC组织中均呈高表达;且子宫内膜不典型增生组MMP-7的表达强度明显高于正常内膜组,可能与EC前病变以及EC的发生发展、浸润和转移相关。     

细胞外基质蛋白-1与基质金属蛋白酶-9在肝细胞癌中的表达及其临床意义

目的 探讨细胞外基质蛋白-1 (ECM1)和基质金属蛋白酶-9(MMP-9)在肝细胞癌组织中的表达及其与肝癌侵袭、转移及预后的关系.方法 采用免疫组织化学法检测120例肝癌组织及17例正常肝组织中ECM1和MMP-9的表达情况.结果 ECM1和MMP-9在肝癌组织中的表达阳性率分别为73.3％和65.0％,明显高于正常肝组织中的23.5％和11.8％.ECM1和MMP-9在肝癌组织中的表达与肿瘤血管侵犯及TNM分级相关,而且MMP-9还与肿瘤的大小、结节数、分化程度和肝硬化程度有关(P＜0.05).两者均与患者的年龄、性别、AFP水平、HBsAg、Child分级及肿瘤包膜无关(P＞0.05).ECM1和MMP-9阳性表达患者的总生存率和无瘤生存率明显低于阴性表达患者.ECM1与MMP-9两者在肝癌中的表达显著正相关(r=0.585,P＜0.001).结论 ECM1和MMP-9的表达与肝癌的侵袭特性相关,与肝癌术后复发密切相关,可作预测肝癌患者手术预后及复发的指标.     

Gender differences in rat aortic smooth muscle cell matrix metalloproteinase-9

BACKGROUND: A predilection exists for men to develop abdominal aortic aneurysms (AAAs), but the reasons for this gender predisposition are not known. Matrix metalloproteinase-9 (MMP-9) has been implicated in both human and experimental AAAs. This investigation tested the hypothesis that male and female gender differences exist in the production of MMP-9 by rat aortic smooth muscle cells (RASMCs). STUDY DESIGN: In the first set of experiments, cultured male and female RASMCs were stimulated with interleukin-1 beta (IL-1beta) at 2 ng/mL. Messenger RNA was extracted from the RASMCs and gene expression of MMP-9 and tissue inhibitor of metalloproteinase-1 (TIMP-1), an MMP-9 inhibitor, was measured by quantitative real-time polymerase chain reaction. Cell culture media were collected for measurement of MMP-9 protein levels and MMP-9 activity by Western blotting and gelatin zymography, respectively. In the second set of experiments, male RASMCs were treated with 17-beta-estradiol (10(-10) to 10(-6) mol/L) and MMP-9 activity was measured. In the third set of experiments, male rats were pretreated with estradiol, and MMP-9 activity was measured in the media from explanted aortas. RESULTS: MMP-9 gene expression was 10-fold higher in male versus female RASMCs (p=0.003). MMP-9 protein levels (p=0.005) and gelatinolytic activities (p=0.01) were also greater in male than female RASMCs. TIMP-1 expression was fourfold higher in male versus female RASMCs (p<0.001). Estradiol-treated male RASMCs did not exhibit a decrease in MMP-9 activity. But aortic explants from male rats pretreated with 17-beta-estradiol had 60% less MMP-9 activity than explants from male controls (p=0.03). CONCLUSIONS: MMP-9 and TIMP-1 are greater in male than in female RASMCs. These findings support the tenet that gender-related differences in MMP-9 may contribute to AAA formation.     

基质金属蛋白酶2,9及金属蛋白酶组织抑制剂1在肾盂移行细胞癌中的表达及意义

目的 探讨基质金属蛋白酶2（MMP-2），9（MMP-9）及金属蛋白酶组织抑制剂1（TIMP-1）表达与肾盂移行细胞癌分级、分期及预后的关系。方法 采用免疫组化SP法检测117例肾盂移行细胞癌标本MMP-2，MMP-9发TIMP-1表达水平。患者中男97例，女20例。平均年龄59岁。肿瘤病理分级：G123例、G273例、G321例；TNM病理分期：Ta22例、T127例、T221例、T325例、T422例。结果 肾盂癌组织MMP-2表达阳性率81．2％（95例），MMP-9表达阳性率72．6％（85例），TIMP1表达阳性率72．6％（85例），阳性表达强度和阳性细胞分布不均匀，主要位于肿瘤细胞的胞质，随肿瘤分级、分期增加，MMP-2、MMP-9阳性表达率呈递增趋势，FL与预后相关，差异有统计学意义（P〈0．05）。TIMP-1阳性表达率随分级、分期增加呈递减趋势，但其差异无统计学意义（P〉0．05），TIMP-1表达强度与患者的生存时间无明显相关性。单因素方差分析发现MMP-9／TIMP-1比值与肿瘤临床病理分级、分期密切相关，随着分级、分期增加呈递增趋势（P〈0．05）。结论 MMP-2及MMP-9检测在肾盂癌病理分级、分期中有重要价值。MMP-2、MMP-9及MMP-9／TIMP-1比值在肾盂癌的预后判断中有重要意义。     

肝门胆管癌基质金属蛋白酶MMP-2及其组织抑制因子TIMP-2表达及意义的研究

目的：探讨基质金属蛋白酶MMP－2及其组织抑制因子TIMP－2在肝门胆管癌的表达及其与肝门胆管癌浸润、转移及预后间的关系。方法：采用免疫组化S－P法对78例肝门胆管癌的MMP－2及其组织抑制因子TIMP－2的表达进行了检测。对MMP－2及TIMP－2的表达与肝门胆管癌的组织分化程度、浸润转移及预后之间的关系进行分析。结果：MMP－2和TIMP－2表达阳性率分别为72％和76％。MMP－2的阳性表达率有淋巴结浸润的肝门胆管癌高于无淋巴结浸润的肝门胆管癌，低分化的肝门胆管癌高于高分化的肝门胆管癌。TIMP－2阳性表达率与以上相反。MMP－2表达与肝门胆管癌术后生存期呈负相关（γ=-0.713,P＜0．01），TIMP－2表达与肝门胆管癌术后生存期呈正相关（γ=0.652,P＜0．01）。MMP－2与TIMP－2具有负相关关系，（γ=-0.708,P＜0．01）。结论：MMP－2与TIMP－2是反映肝门胆管癌浸润、转移及预后的指标。