MMP-9,TIMP-1和IV型胶原在甲状腺癌中的表达及其临床意义

笔者采用免疫组织化学S-P法测定32例甲状腺癌组织、23例癌旁组织及30例良性甲状腺病变组织标本中MMP-9，IMP-1和Ⅳ型胶原的表达。结果示，MMP-9及TIMP-1在甲状腺癌组织中呈高表达（75．0％和56．3％），在癌旁组织及良性病变组织中呈低表达（30．3％，21．7％和26．7％，23．3％）（P〈0．05）。MMP-9及TIMP-1蛋白的表达与浸润程度、淋巴结转移、TNM分期有关（P〈0．05），MMP-9蛋白表达与TIMP-1呈负相关（r=-0．509，P=0．003）。IV型胶原在甲状腺癌组织中呈低表达（34．4％），在癌旁组织及良性病变组织中呈高表达（73．9％和83．3％，P〈0．05）。Ⅳ型胶原的表达与MMP-9蛋白的表达呈负相关（r=-0．494，P=0．004）。提示检测甲状腺肿瘤患者柄变组织中MMP-9，TIMP-1和Ⅳ型胶原的表达有助于鉴别诊断甲状腺良恶性肿瘤，并可作为评估甲状腺癌预后的参考指标。     

基质金属蛋白酶-9及金属蛋白酶组织抑制剂-1对甲状腺乳头状癌诊断的意义

目的:探讨基质金属蛋白酶-9(MMP-9)和金属蛋白酶组织抑制剂-1(TIMP-1)在甲状腺肿瘤组织中的表达。方法:制备组织芯片,采用免疫组织化学和原位杂交技术检测56例甲状腺癌组织、56例癌旁组织和40例良性甲状腺病变组织中MMP-9和TIMP-1的表达情况。结果:MMP-9和TIMP-1蛋白在甲状腺癌组织的阳性表达率为71.4%和57.1%,MMP-9 mRNA和TIMP-1 mRNA在甲状腺癌组织中阳性表达率为67.9%和62.5%,均明显高于癌旁和良性甲状腺病变组织(P<0.05)。在甲状腺癌组织中,MMP-9、TIMP-1蛋白和MMP-9、TIMP-1 mRNA的表达,分别呈负相关性(RS=-0.309、-0.264,P<0.05)。结论:MMP-9和TIMP-1在组织中的检测有助于甲状腺癌的判断,并可作为预后评估的重要参考。     

MMP-9,TIMP-1和IV型胶原在甲状腺癌中的表达及其临床意义

笔者采用免疫组织化学S-P法测定32例甲状腺癌组织、23例癌旁组织及30例良性甲状腺病变组织标本中MMP-9,IMP-1和IV型胶原的表达。结果示,MMP-9及TIMP-1在甲状腺癌组织中呈高表达(75.0%和56.3%),在癌旁组织及良性病变组织中呈低表达(30.3%,21.7%和26.7%,23.3%)(P<0.05)。MMP-9及TIMP-1蛋白的表达与浸润程度、淋巴结转移、TNM分期有关(P<0.05),MMP-9蛋白表达与TIMP-1呈负相关(r=-0.509,P=0.003)。IV型胶原在甲状腺癌组织中呈低表达(34.4%),在癌旁组织及良性病变组织中呈高表达(73.9%和83.3%,P<0.05)。IV型胶原的表达与MMP-9蛋白的表达呈负相关(r=-0.494,P=0.004)。提示检测甲状腺肿瘤患者病变组织中MMP-9,TIMP-1和IV型胶原的表达有助于鉴别诊断甲状腺良恶性肿瘤,并可作为评估甲状腺癌预后的参考指标。     

MMP-9、TIMP-1蛋白在门静脉高压脾脏中的表达及临床意义

目的 探讨基质金属蛋白酶-9 （MMP-9）及金属蛋白酶组织抑制因子-1（TIMP-1）在门静脉高压脾脏中表达及临床意义.方法 采用免疫组织化学及免疫印记方法检测门静脉高压脾脏及正常脾脏中MMP-9、TIMP-1的表达情况.分析其与脾脏纤维化程度及与临床资料的关系.结果 门静脉高压脾脏中MMP-9的表达明显低于正常组（P〈0.05）;而TIMP-1蛋白则明显增高（P〈0.05）.（2）MMP-9和TIMP-1表达均与Child-Pugh分级相关.（3）门静脉高压脾脏中MMP-9与脾脏纤维化程度呈显著负相关（r=-0.594,P=0.000）;TIMP-1表达与脾脏纤维化程度呈显著正相关（r=0.630,P=0.000）.结论 MMP-9与TIMP-1在门静脉高压脾脏纤维化过程中具有重要作用.     

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。     

慢性肾衰竭患者血清MMP-9和TIMP-1表达及意义

目的检测慢性肾衰竭（CRF）患者血清基质金属蛋白酶-9（MMP-9）及金属蛋白酶组织抑制因子-1（TIMP-1）表达状况,拟在探讨其与肾脏纤维化的关系。方法采用ELISA法测定60例CRF患者（氮质血症期15例,肾衰竭期24例,尿毒症终末期21例）和20例正常对照组血清MMP-9、TIMP-1水平,同时收集患者临床资料,分析血清MMP-9、TIMP-1水平和MMP-9／TIMP-1比值与肾功能损害等临床指标之间的相关性。结果CRF患者各期血清MMP-9、TIMP-1水平明显升高,MMP-9／TIMP-1比值显著降低,随着肾小球滤过率（GFR）下降,MMP-9、TIMP-1呈降低趋势,而MMP-9／TIMP-1比值却逐渐上升。血清TIMP-1水平和MMP-9／TIMP-1比值与血肌酐、GFR及血红蛋白呈高度相关性。结论血清MMP-9、TIMP-1参与了CRF的进展,血清TIMP-1水平或MMP-9／TIMP-1比值能较好地反映肾脏纤维化的程度。     

基质金属蛋白酶及抑制因子与腹主动脉瘤临床病理特点的相关性研究

目的：研究基质金属酶（MMP）-2、MMP-9及抑制因子TIMP-1在腹主动脉瘤中的表达及与临床病理特征之间的关系。方法：应用免疫组化PV-9000通用型二步法对70例腹主动脉瘤和15例正常腹主动脉标本中的MMP-2、MMP-9及TIMP-1表达进行检测。结果：腹主动脉瘤组织中MMP-2和MMP-9蛋白表达阳性率明显高于正常腹主动脉组织,TIMP-1蛋白表达阳性率和正常腹主动脉没有统计学差异,（X^2=0.103,P=0.991）;MMP-2蛋白的表达与腹主动脉瘤的直径呈负相关（X^2=13.785,P=0.032）,MMP-9蛋白的表达与患者临床症状,腹主动脉瘤直径、破裂有相关性,（P〈0.05）,TIMP-1蛋白表达阳性率与临床病理特征无相关性（X^2=0.103,P=0.991）。结论：腹主动脉瘤组织中MMP高表达和TIMP的相对弱表达在腹主动脉瘤发生、发展过程中起重要作用,MMP-9可以预测腹主动脉瘤的自然病程从而作为腹主动脉瘤手术治疗的指征之一。     

基质金属蛋白酶9、3和金属蛋白酶组织抑制物1在原发性膜性肾病肾小球内的表达及意义

目的探讨基质金属蛋白酶9（MMP-9）、基质金属蛋白酶3（MMP-3）和金属蛋白酶组织抑制物1（TIMP-1）在原发性膜性肾病（IMN）患者肾小球内的表达变化及其与蛋白尿、Scr的关系。方法用免疫组织化学技术分别检测44例IMN患者（IMN组）与6例正常对照者（对照组）肾小球内MMP-9、MMP-3和TIMP-1的表达。结果MMP-9及MMP-3在对照组正常肾组织的肾小管上皮细胞、肾间质和肾小球足细胞有少量表达；在IMN组肾小球足细胞、系膜细胞、肾小球基底膜及肾小管上皮细胞有表达。IMN组肾小球内MMP-9及MMP-3的表达均较对照组显著增强（P〈0．05）。TIMP-1在对照组正常肾组织的肾小管上皮细胞有少量表达，肾小球内无表达；在IMN组肾小球足细胞、肾小管上皮细胞有表达。IMN组肾小球内TIMP-1的表达较对照组显著增强（P〈0．01）。IMN组24h尿蛋白定量显著高于对照组（P〈0．01）。Ⅱ期MN组肾小球MMP-9／TIMP-1及MMP-3／TIMP-1比值较Ⅰ期MN组明显下降（P〈0．01）。IMN组肾小球内MMP-9的表达与Scr呈负相关（r=-0．02，P〈0．05）；TIMP-1的表达与Scr呈正相关（r=0．34，P〈0．05）。结论MMP-9与TIMP-1从正反两方面影响IMN患者肾功能的改变。MMP-9、MMP-3的异常表达与IMN患者蛋白尿之间可能相关；IMN患者肾小球MMP／TIMP比值失衡可能与IMN患者肾小球基底膜增厚相关。     

结肠直肠癌病人血浆金属蛋白酶及其组织抑制物的表达及意义

目的：探讨结肠直肠癌病人血浆中基质金属蛋白酶-9（MMP-9）及其组织抑制因子-1（TIMP-1）的表达与结肠直肠癌浸润、转移及预后的关系,以及手术、化疗对其表达的影响,以期在分子水平上更准确地判断结肠直肠癌的预后。方法：选取结肠直肠癌病人50例,于手术前、术后10d、6次化疗后2周,分别抽取病人4mL外周静脉血,采用酶联免疫分析法检测MMP-9、TIMP-1血浆浓度的变化。结果：低分化结肠直肠癌病人血浆MMP-9及TIMP-1水平高于高、中分化者（P〈0．01、P〈0．05）;TNMⅢ、Ⅳ期病人高于TNMⅠ、Ⅱ期者（P〈0．01）。手术后血浆MMP-9、TIMP-1水平显著下降,有统计学意义（P〈0．01、P〈0．05）,化疗后其浓度变化无显著性差异（P〉0．05）。结论：MMP-9和TIMP-1与肿瘤恶性程度有关;术前检测外周血MMP-9和TIMP-1浓度有可能成为结肠直肠癌辅助诊断及病情评估的较好血清学标志。MMP-9可能与肿瘤复发或转移存在一定关系,术后动态检测外周血MMP-9浓度可反映肿瘤负荷。从而对监测肿瘤复发提供一定帮助。     

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。     

Secretion of Matrix Metalloproteinase-9 and Tissue Inhibitor of Metalloproteinase-1 by Meningiomas Detected by Cell Immunoblot Analysis

Summary  To identify features of meningiomas that infiltrate dura mater, and to examine the role Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) secretion in meningiomas, a cell immunoblot assay study was performed in 20 meningiomas. MMP-9 secretion was detected in 20 (100%) meningiomas and was independent of histological features. TIMP-1 secretion was detected in 8 (40%) meningiomas. For a cell immunoblot volume which included approximately 1350 cells, there were 50.4±49.4 dots which showed immunoreactivity to MMP-9 and 2.0±4.2 which showed immunoreactivity to TIMP-1. The number of dots that showed immunoreactivity to MMP-9 was not significantly different between tumours with atypical and benign histological features. TIMP-1 secretion was found in only 8 (40%) specimens and the percentage of TIMP-1 secreting cells was significantly lower than that of MMP-9 secretion. Thus, we propose that meningiomas classified histologically as both atypical and benign have the potential to infiltrate dura mater.     

尿液中基质金属蛋白酶-2及基质金属蛋白酶组织抑制剂-2在评价梗阻性膀胱顺应性改变中的临床研究

目的:检测尿液中基质金属蛋白酶-2(MMP-2)及基质金属蛋白酶组织抑制剂-2(TIMP-2),探讨MMP-2及TIMP-2在诊断梗阻性膀胱顺应性改变中的应用价值。方法: 2016年11月—2020年1月期间前列腺增生致膀胱顺应性改变患者资料。研究组患者尿动力检查存在膀胱出口梗阻(BOO),且膀胱顺应性(BC)20 ≤BC＜40 mL /cmH2 O;对照组为随机抽取前列腺增生引起BOO者,且BC ≥40 mL/cmH2 O。留取患者尿液并行血肌酐及胱抑素C检测,同时收集尿液于―80 ℃冻存待检测。尿样解冻后采用ELISA试剂盒测定MMP-2及TIMP-2尿液中含量。结果: 37例患者纳入研究组,两组间年龄、IPSS评分、体重指数(BMI)、膀胱过度活动症评分(OABSS)差异无统计学意义(P>0.05);除BC外两组间尿动力学参数(残余尿量、最大逼尿肌力、膀胱初感觉容量等)差异无统计学意义(P>0.05)。研究组尿液MMP-2及TIMP-2含量分别为(0.75±0.26)ng/mL、(359.8±123.7) pg/mL,高于对照组(0.52±0.21)ng/mL、(289.8±101.9)pg/mL,差异具有统计学意义(P<0.05)。结论:尿液中MMP-2与TIMP-2表达情况与梗阻因素导致的BC改变密切相关。     

Decreased Tissue Inhibitor of Metalloproteinase-2/Matrix Metalloproteinase Ratio in the Acute Phase of Aortic Dissection

Purpose Aortic dissection is characterized by fragility of the tunica media, and matrix metalloproteinases (MMPs) are enzymes that degrade the extracellular matrix of the aorta. This study examines MMPs in patients with acute aortic dissection (AAD) in an attempt to elucidate the mechanisms of their actions.Methods Enzyme-linked immunosorbent assays were used to measure the quantification of MMP-2, MMP-9, and the tissue inhibitor of metalloproteinase (TIMP)-2 in 30 patients with AAD, 12 patients with abdominal aortic aneurysm (AAA), and 16 control (CON) patients who underwent coronary artery bypass grafting.Results MMP-2 and TIMP-2 were significantly lower in the AAD group than in the CON group, at 36 ± 19 vs 58 ± 30 (P 0.01) and at 21 ± 25 vs 216 ± 130 (P 0.001), respectively. The TIMP-2/MMP-2 ratio was 3.7 ± 1.7 in the CON group and 0.9 ± 0.8 in the AAD group (P 0.001 vs CON), and the TIMP-2/MMP-9 ratio was 200 ± 170 in the CON group and 37 ± 80 in the AAD group (P 0.001 vs CON).Conclusion Low TIMP-2/MMP-2 and TIMP-2/MMP-9 ratios might play an important role in the onset of aortic dissection, when the tunica media becomes fragile with chronic breakage and degradation of the extracellular matrix.     

肺癌患者金属蛋白酶组织抑制因子—1基因表达的研究

目的了解金属蛋白酶组织抑制因子-1在肺癌发展过程中的作用。方法术中取19例肺癌患者癌组织及正常肺组织，提取组织总核糖核酸(RNA)，用逆转录共扩增定量多聚酶链反应(PCR)方法测定金属蛋白酶组织抑制因子-1基因表达水平。结果肺癌组织金属蛋白酶组织抑制因子-1基因表达水平明显高于正常肺组织(P＜0.01)，肺癌患者金属蛋白酶组织抑制因子-1基因表达水平与肿瘤大小呈负相关(r=-0.467，P＜0.05)；与肿瘤组织学类型无关。结论金属蛋白酶组织抑制因子-1在阻止肺癌的浸润、转移中可能起重要作用。     

Different Roles for Matrix Metalloproteinase-2 and Matrix Metalloproteinase-9 in the Pathogenesis of Cardiac Allograft Rejection

Recent studies have shown an increased expression of several matrix metalloproteinases (MMP) during cardiac, renal and pulmonary allograft rejection. To further define the roles of MMP-2 and MMP-9 in the pathogenesis of cardiac allograft rejection, BALB/c cardiac allografts were transplanted into MMP-2-deficient (-/-) and MMP-9-/- mice. Allografts rejected by wild-type mice revealed a significant increase in MMP-2 and MMP-9 expression. MMP-2-deficiency significantly prolonged allograft survival time. Functioning allografts harvested from MMP-2-/- mice showed lower cellular infiltration and fibrosis than rejected allografts harvested from MMP-2+/+ mice at the same time. In contrast, MMP-9-deficiency significantly decreased allograft survival time. Functioning allografts harvested from MMP-9+/+ mice showed lower cellular infiltration and fibrosis than rejected allografts harvested from MMP-9-/- mice at the same time. MMP-2-/- recipients showed decreased T-cell alloreactivity mediated by a defect in dendritic cell stimulatory and T-cell responsive capacities. In contrast, MMP-9-/- recipients showed increased T-cell alloreactivity mediated by a significant increased in dendritic cell stimulatory and T-cell responsive capacities. These results indicate that MMP2 and MMP-9 play significantly different roles in the process of cardiac allograft rejection.     

Tissue Inhibitor of Matrix Metalloproteinase-1 Suppresses Apoptosis of Mouse Bone Marrow Stromal Cell Line MBA-1

We investigated the action of tissue inhibitor of metalloproteinase-1 (TIMP-1) on apoptosis and differentiation of mouse bone marrow stromal cell line MBA-1. TIMP-1 did not affect alkaline phosphatase (ALP) activity, suggesting that it is not involved in osteoblastic differentiation in MBA-1 cells. However, TIMP-1 inhibited MBA-1 apoptosis induced by serum deprivation in a dose-dependent manner. Our study also showed increased Bcl-2 protein expression and decreased Bax protein expression with TIMP-1 treatment. TIMP-1 decreased cytochrome c release and caspase-3 activation in MBA-1 cells. TIMP-1 activated phosphatidylinositol 3-kinase (PI3-kinase) and c-Jun N-terminal kinase (JNK), and the PI3-kinase inhibitor LY294002 or the JNK inhibitor SP600125 abolished its antiapoptotic activity. To investigate whether antiapoptotic action of TIMP-1 was mediated through its inhibition on MMP activities, we constructed mutant TIMP-1 by side-directed mutagenesis, which abolished the inhibitory activity of MMPs by deletion of Cys1 to Ala4. Wild-type TIMP-1 and mutant TIMP-1 expression plasmids were transfected in MBA-1 cells, and results showed that mutant TIMP-1 still protected the induced MBA-1 cell against apoptosis. These data suggest that TIMP-1 antiapoptotic actions are mediated via the PI3-kinase and JNK signaling pathways and independent of TIMP-1 inhibition of MMP activities. L.-J. Guo and X.-H. Luo this authors contributed equally to this work.     

基质金属蛋白酶-1、金属蛋白酶组织抑制剂-1、增殖细胞核抗原在病理性瘢痕中的表达

目的：研究基质金属蛋白酶-1（MMP-1）、金属蛋白酶组织抑制剂-1（TIMP-1）、增殖细胞核抗原（PCNA）在病理性瘢痕中的表达及意义.方法：对58例病理性瘢痕手术切除标本采用免疫组化方法.结果：MMP-1、TIMP-1、PCNA在病理性瘢痕中呈阳性表达.结论：病理性瘢痕中细外基质合成增加为成纤维细胞过度增殖所致;病理性瘢痕形成与MMP-1、TIMP-1相互作用失衡有关.     

Matrix Metalloproteinase-9 Expression in Congenital Diaphragmatic Hernia During Mechanical Ventilation

Purpose Matrix metalloproteinase-9 (MMP-9) is detected in lung tissues subjected to ventilator-induced injury and is involved in the process of lung injury. We investigated the immunohistochemical expression of MMP-9 in the bilateral lungs of newborns with congenital diaphragmatic hernia (CDH) during mechanical ventilation and evaluated the degree of damage based on MMP-9 expression.Methods Lung tissue samples were obtained during autopsy from six newborns with CDH. Control lung tissue samples were obtained from two of these newborns; one who died of persistent pulmonary hypertension after being ventilated for 2 days, but whose bilateral lungs were not subjected to the compressions of herniation, and one who died of bilateral diaphragmatic hernias soon after birth, but was not subjected to artificial ventilation. The other four newborns with CDH had unilateral Bochdalek hernias. Immunohistochemical detection of MMP-9 expression was done using a wet autoclave antigen retrieval method on sections from formalin-fixed and paraffin-embedded lung tissue.Results The reaction and distribution of MMP-9 was strongly positive in the alveolar macrophages in thickened alveolar septi and ducts, and in the inflammatory cells around the parenchymal hemorrhage and intra-alveolar spaces. Only the four patients with unilateral Bochdalek hernia had widely positive MMP-9 immunoreactivity in the unaffected side, as well as the affected side.Conclusions Based on MMP-9 expression, the lungs of newborns with CDH were damaged bilaterally during mechanical ventilation.     

基质金属蛋白酶-2在实验性大鼠腹主动脉瘤模型中的动态表达

目的:检测基质金属蛋白酶-2(MMP-2)在大鼠正常动脉及动脉瘤模型组织中的动态表达,以探讨其在腹主动脉瘤发病机制中的作用。方法:Wistar大鼠54只,随机分为9组,每组6只。1组为正常对照组;4组生理盐水对照组;4组实验组。实验组经腹主动脉灌注弹力蛋白酶(25U/ml)2ml,持续2h;对照组经腹主动脉灌注生理盐水2ml;分别于术前、术后即刻、第2天、第7天、第14天测量腹主动脉直径,并采用免疫组织化学和分子原位杂交技术动态检测腹主动脉组织中MMP-2的表达。结果:正常腹主动脉组织中仅含微量MMP-2,弹力蛋白酶灌注后第2～14天MMP-2均有不同程度升高,且与纤维反应相关。结论:MMP-2的分泌与纤维反应有关,并对腹主动脉瘤的形成起重要作用。