TIMP-1、MMP-2、MMP-9在大肠癌组织中表达的临床意义

目的 研究TIMP-1、MMP-2和MMP-9在大肠癌组织中表达的临床意义.方法 采用免疫组化SP法检测50例大肠癌、10例正常大肠黏膜组织中TIMP-1、MMP-2和MMP-9的表达.结果 TIMP-1、MMP-2、MMP-9在正常组织中的表达均较低,而它们在大肠癌组织中阳性率均较高(P<0.05).结论 TIMP-1、MMP-2、MMP-9与大肠癌临床病理参数有关系.TIMP-1、MMP-2和MMP-9可能是大肠癌侵袭转移的分子标记物.     

葶苈生脉饮对压力负荷大鼠心肌组织MMP-9及TIMP-1表达的影响

治疗CHF的作用机制之一.     

基质金属蛋白酶-9及其抑制剂在COPD合并肺间质纤维化大鼠中的作用

目的 观察基质金属蛋白酶-9(MMP-9)及组织型蛋白酶抑制剂-1(TIMP-1)在慢阻肺继发肺间质纤维化(PIFCOPD)大鼠肺组织中的变化,评价其与PIF-COPD的病理变化及发病机制的相关性.方法 雄性大鼠24只,随机分为正常对照组(1组),21天(2组)和42天(3组)模型组.以烟熏联合气管内滴注脂多糖建立PIF-COPD模型.免疫组化法检测肺组织中MMP-9及TIMP-1水平.结果 MMP-9和TIMP-1在1组有少量表达;在2和3组MMP-9为0.1970±0.0017和0.2414 ±0.0017;TIMP-1为0.1265 ±0.0018和0.2171 ±0.0023(与l组相比P＜0.05)水平逐渐增高且与肺间质纤维化的严重程度成正相关.结论 MMP-9及TIMP-1的水平与PIF-COPD的发病机制及病程有关.     

肺表面活性物质对COPD大鼠模型基质金属蛋白酶-9及其抑制剂的影响

目的观察慢性阻塞性肺病（COPD）大鼠模型基质金属蛋白酶9（MMP-9）、MMP组织抑制剂（TIMP-1）表达,以及肺表面活性物质（PS）对其的影响。方法用香烟熏吸加气管内注入脂多糖法建立大鼠COPD模型,PS进行干预,观察其肺功能、肺组织病理学改变,免疫组化法检测肺MMP-9及TIMP-1表达;并设正常对照组。结果COPD组肺功能与对照组有明显统计学差异。COPD组MMP-9表达强阳性,TIMP-1轻度增多,二者比例失衡。PS干预后肺功能改善,组织损伤减轻,MMP-9阳性表达减弱,MMP-9、TIMP-1比例趋于平衡。结论PS对COPD有预防保护作用,可延缓其病情发展。     

MMP-9、TIMP-1在子宫内膜异位症患者子宫内膜中的表达及意义

目的观察基质金属蛋白酶-9（MMP-9）和基质金属蛋白酶组织抑制剂-1（TIMP-1）在子宫内膜异位症（EMs）患者子宫内膜中的表达,并探讨其在EMs发病机制中的作用.方法利用免疫组化法检测MMP-9和TIMP-1在35例EMs患者（观察组,其中未孕16例、已孕19例）异位内膜及在位内膜组织和35例正常人（对照组）子宫内膜中的表达.结果①MMP-9在观察组异位内膜中的表达高于在位内膜和对照组（P均＜0.05）,在位内膜中的表达高于对照组（P均＜0.05）;②TIMP-1、MMP-9/TIMP-1在观察组异位内膜中的表达低于在位内膜和对照组（P均＜0.05）;观察组未孕与已孕患者MMP-9和TIMP-1表达以及MMP-9/TIMP-1均无统计学差异（P均＞0.05）.结论MMP-9高表达以及MMP-9/TIMP-1的比例失调,使子宫内膜更具侵袭性,在EMs的发生、发展中起重要作用.     

基质金属蛋白酶-9及其抑制物TIMP-1表达与醋柳黄酮治疗大鼠缺血-再灌注损伤心肌的关系研究

目的：观察基质金属蛋白酶（MMP）-9及其抑制物TIMP-1表达与醋柳黄酮治疗大鼠缺血-再灌注损伤心肌的关系研究,探讨醋柳黄酮对心肌缺血再灌注损伤的保护机制。方法：将50只大鼠随机分组：模型组、氯沙坦组、醋杉P黄酮大小剂量组及假手术组。结扎左冠状动脉前降支,30min后松开制作心肌缺血再灌注模型,免疫组织化学检测再灌注心肌组织MMP-9及其抑制物TIMP-1表达。结果：免疫组化结果示模型组较假手术组MMP-9、TIMP-1表达增高;醋柳黄酮大小剂量组较模型组MMP-9表达减少,TIMP-1表达增多。且有统计学意义。结论：醋柳黄酮对再灌注损伤心肌有保护作用,其作用机制与抑制心肌中MMP-9表达,促进TIMP-1表达有关。     

AECOPD与哮喘急性发作患者血清MMP-9、TIMP-1、IL-17水平的研究

目的 研究AECOPD患者与哮喘急性发作患者血清MMP-9、TIMP-1、IL-17的水平.方法 检测并比较2009年8月～2011年8月期间我院呼吸内科收治的22例AECOPD患者、18例哮喘急性发作患者及16例健康体检者的血清基质金属蛋白酶-9(MMP-9)、基质金属蛋白酶抑制剂-1(TIMP-1)、白介素-17(IL-17)水平.结果 AECOPD组及哮喘急性发作组血清MMP-9、TIMP-1、MMP-9/TIMP-1比值、IL-17水平均高于健康对照组,差异有统计学意义;AECOPD组患者血清MMP-9、TIMP-1、IL-17水平均高于哮喘急性发作组,而MMP-9/TIMP-1比值低于哮喘急性发作组,差异有统计学意义.结论 AECOPD患者与哮喘急性发作患者血清MMP-9、TIMP-1、IL-17水平升高,且AECOPD患者的血清MMP-9、TIMP-1、IL-17水平高于哮喘急性发作患者.     

糖皮质激素对轻度持续性哮喘患者痰液中MMP-9/TIMP-1的影响

目的 观察糖皮质激素对轻度持续性哮喘患者痰液中MMP-9/TIMP-1的影响,探讨糖皮质激素降低气道重塑的机制.方法 轻度持续性支气管哮喘患者23例,采用酶联免疫吸附法(ELISA)测定使用吸入糖皮质激素前后痰液中MMP-9、TIMP-1、MMP-9/TIMP-1水平的变化并与肺功能指标进行相关性分析.结果 使用吸入糖皮质激素布地奈德后哮喘患者痰液MMP-9、MMP-9/TIMP-1水平显著降低(P<0.05).PEF、FEV1占预计值百分比与MMP-9/TIMP-1比率成负相关性(r=-0.402,r=-0.364,P<0.05).结论 糖皮质激素降低气道重塑的机制可能与其纠正MMP-9/TIMP-1失衡有关.     

MMP-9、TIMP-1在胰腺癌组织中的表达及临床意义

目的:探讨胰腺癌患者组织中MMP-9、TIMP-1的表达及其相互关系,分析其与临床及转移预后的关系.方法:免疫组织化学SP法检测63例胰腺癌、11例慢性胰腺炎和6例正常胰腺组织中MMP-9、TIMP-1的表达.结果:胰腺癌组织中MMP-9表达明显高于慢性胰腺炎和正常胰腺组织(58.7% vs 18.1%,0.0%;均P<0.05).TIMP-1在胰腺癌的表达低于正常胰腺组织(46.0% vs 100.0%,P<0.05).MMP-9和TIMP-1在胰腺癌组织中的表达与性别、年龄、组织学分级无关,而与患者的淋巴结转移、远处转移情况有关(P<0.05).结论:MMP-9、TIMP-1在胰腺癌组织中的表达变化可能与胰腺癌转移相关.     

Clinicopathological correlations of TIMP-1 and TIMP-2 in Hodgkin's lymphoma

OBJECTIVES: The influence of matrix-tumour interactions in Hodgkin's lymphoma is poorly characterised, although a large part of the tumour often consists of reactive tissue. The aim of the present study was to assess the clinicopathological role of two main inhibitors of matrix metalloproteinases, TIMP-1 and TIMP-2, in Hodgkin's lymphoma. MATERIALS AND METHODS: The TIMP-1 and TIMP-2 protein expressions were studied from paraffin-embedded tumour sections of 68 patients with Hodgkin's lymphoma by using immunostaining with TIMP-1 and TIMP-2-specific antibodies. The results of the stainings were compared with the clinicopathological disease characteristics. RESULTS: A total of 33.3% of the tumour tissue sections expressed TIMP-1 and 46.8% expressed TIMP-2. The expression of the TIMP-1 protein was found to be strongly associated with the nodular sclerosis subtype (P = 0.015) and the existence of a bulky tumour (P = 0.004) in Hodgkin's lymphoma. The expression of the TIMP-2 protein, on the other hand, correlated with the occurrence of B symptoms (P = 0.032). CONCLUSIONS: These results provide the first clinical evidence suggesting that TIMP-1 could promote growth of Hodgkin's lymphoma, and may be linked to connective tissue turnover in the nodular sclerosis subtype. However, TIMP-2 is shown to correlate with systemic symptoms.     

The production of tissue inhibitors of metalloproteinases (TIMPs) in megakaryopoiesis: possible role of platelet- and megakaryocyte-derived TIMPs in bone marrow fibrosis

We quantified tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2 in serum and plasma in normal control subjects and patients with a low or high platelet count, using one-step sandwich enzyme immunoassays. The serum levels of TIMP-1 and TIMP-2 were 101.1 ± 13.3 ng/ml, and 82.7 ± 26.3 ng/ml, respectively, in normal subjects. In patients with an elevated platelet count, such as in essential thrombocytosis, polycythaemia vera, and myelofibrosis, serum levels of TIMP-1 and TIMP-2 were 351.6 ± 200.9 ng/ml and 148.9 ± 84.0 ng/ml, respectively. Serum levels of TIMP-1 and TIMP-2 in patients with a low platelet count, such as in aplastic anaemia and idiopathic thrombocytopenic purpura, were 57.2 ± 25.8 ng/ml and 19.7 ± 7.68 ng/ml, respectively. The serum level of TIMP-1 was significantly correlated with the platelet count in all subjects. The correlation between the serum level of TIMP-2 and the platelet count was not as strong. The level of TIMP-1 in platelet-depleted plasma was not correlated with the platelet count.
Immunohistochemical staining using monoclonal antibodies against TIMP-1 and TIMP-2 showed that megakaryocytes and platelets were positive for both TIMP-1 and TIMP-2, confirming that they are rich sources of TIMPs. TIMP-1 and TIMP-2 stimulated the proliferation of bone marrow fibroblasts, although their effect was less potent than that of TGF-β and PDGF.
Erythroleukaemia and megakaryoblastic cell lines showed the highest secretion of TIMP-1 among the leukaemia cell lines examined. There was no lineage specificity for TIMP-2 secretion. These results suggest that TIMPs released from megakaryocytes or from local platelet coagulation may be important in the development of bone marrow fibrosis.     

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/TIMP-1表达失衡在子宫内膜异位症中的临床意义

目的探讨基质金属蛋白酶9(MMP9)及其抑制剂(TIMP1)在子宫内膜异位症(EMs)发生发展过程中的作用。方法收集50例EMs患者的异位内膜组织标本和20例在位内膜组织标本,采用免疫组化方法分别检测MMP9、TIMP1在两组组织中的表达。结果MMP9、TIMP1在异位内膜中多呈阳性或强阳性表达,但两者表达程度不同,前者随美国生育协会(rAFS)分期增高表达上调,后者则随rAFS分期增高表达下调,两者相比较差异具有显著性意义(P<005)。正常对照组的在位内膜中多呈弱阳性表达或无表达,两组比较差异极具显著意义(P<001)。结论MMP9/TIMP1表达失衡在EMs发生发展过程中可能有着重要作用。     

Survival in 91 adults with acute myelogenous leukaemia treated with 1-6 intensive courses of chemotherapy.

Ninety-one patients with acute myelogenous leukaemia (AML) aged 17-59 years were treated with a chemotherapy programme which could be completed within 30 weeks for patients who achieved complete remission (CR). Four courses included daunorubicin, cytarabine and thioguanine, while two courses included amsacrine, etoposide and cytarabine. Sixty-five patients obtained CR (71%), more often in patients below (82%) than above (60%) 40 years of age (P = 0.03). Five patients underwent allogenic bone-marrow transplantation, and one patient received an autologous bone-marrow transplant after relapse. Five patients developed central nervous system leukaemia. The overall actuarial 3- and 5-year survival was 29% and 21%, respectively; for patients who obtained CR the corresponding survival rates were 40% and 30%, respectively. Patients below 40 years of age appeared to fare better (5-year survival 26%) than older patients (5-year survival 16%). The estimated disease-free survival rate was 26% at 3 years and 22% at 5 years. The main advantage of this regimen is that results compare favourably with those obtained with other regimens were achieved, without exposing patients to long periods of maintenance therapy.     

金属基质蛋白酶9及其组织抑制物1在肾组织中的表达和调控

目的:观察STZ鼠肾组织及高糖状态下正常人类系膜细胞(NHMC)中金属基质蛋白酶9(MMP-9)、金属基质蛋白酶组织抑制物1(TIMP-1)表达状况及磷酸肌酸激酶(PKC)抑制剂对其表达的影响,探讨糖尿病肾病(DN)时PKC抑制剂在细胞外基质降解中的作用。方法:Wistar大鼠随机分为正常对照组、DN模型组、PKC抑制剂组。PKC抑制剂组采用根皮素10mg/(kg.d)混悬液灌胃进行干预。第8周处死大鼠(每组6只)。检测24h尿蛋白定量、血肌酐水平。用免疫组化方法检测肾脏组织MMP-9、TIMP-1的表达。用ELISA方法检测肾脏组织PKC活性。体外实验,将NHMC置37℃,5%CO2培养箱中进行培养。并将NHMC分为N组(对照组):糖浓度5mmol/L,H组(高糖组):糖浓度30mmol/L,P组(高糖加PKC抑制剂):糖浓度30mmol/L加chelery thrine chloride 10-5mmol/L,M组(甘露醇组):甘露醇30mmol/L。于培养24、48、72h后用MTT法测定细胞增值。采用ELISA方法检测四组PKC活性。分别用RT-PCR及Western Blot检测各组MMP-9、TIMP-1mRNA及蛋白表达。结果:DN模型组尿蛋白排泄明显增加(P<0.01),血肌酐上升(P<0.05),PKC活性明显增高,MMP-9和TIMP-1出现表达,MMP-9/TIMP-1比值降低。PKC抑制剂干预后其尿蛋白排泄明显减少,血肌酐水平降低,PKC活性下降,MMP-9、TIMP-1表达上调,其MMP-9/TIMP-1比值增高。体外实验中,高糖能促进NHMC增殖,且NHMC的增殖状况随时间的递增而明显增加。高糖(30mmol/L)能增加系膜细胞PKC的活性,MMP-9、TIMP-1较高表达,MMP-9/TIMP-1比值降低。而PKC抑制剂使PKC的活性降低同时,MMP-9、TIMP-1表达上调,MMP-9/TIMP-1比值增高。结论:高糖可诱导PKC活性,PKC抑制剂能使MMP-9、TIMP-1表达上调,MMP-9/TIMP-1表达比值升高,推测PKC的活性状况可影响DN细胞外基质降解过程。     

Remission maintenance therapy with histamine and interleukin-2 in acute myelogenous leukaemia

Peripheral blasts recovered from patients with acute myelogenous leukaemia (AML) were efficiently lysed by interleukin-2 (IL-2)-activated heterologous natural killer (NK) cells in vitro. The IL-2-induced killing of AML blasts was inhibited by monocytes, recovered from peripheral blood by centrifugal elutriation. Histamine, of concentrations within the micromolar range, abrogated the monocyte-induced inhibition of NK-cells; thereby, histamine and IL-2 synergistically induced NK-cell-mediated killing of AML blasts. The effect of histamine was apparently mediated by H₂-type histamine receptors (H₂R), since the H₂R antagonist ranitidine completely blocked the response. Based on these in vitro findings, seven patients with AML in first (n=2), second (n=3) or third (n=2) complete remission (CR) were given home therapy with interleukin-2 (IL-2; 0.9×10⁶ IU×2 s.c.) and histamine (0.4–0.7 mg×2 s.c.) in cycles of 21 d, separated by 6-week intervals. The patients also received treatment with low-dose cytarabine and thioguanine between cycles of histamine/IL-2. Toxicity was moderate and included local reactions to IL-2 at the site of injection and short-lasting flush, hypotension, and headache to histamine. The addition of histamine to treatment with IL-2 significantly enhanced the accumulation of CD25⁺ T cells in peripheral blood as compared to treatment with IL-2 alone (P<0.003). Five patients remain in complete remission at 9, 18, 21, 24 and 26 months; the two patients in CR3 relapsed after 8 and 33 months, respectively. In the five patients with earlier relapse, the duration of remission after treatment with histamine/IL-2 has in each case exceeded that of previous remissions. We conclude that (i) histamine and IL-2 synergize to kill human AML blasts in vitro, and (ii) histamine/IL-2 is a safe and feasible approach to immunotherapy of AML which merits further investigation.     

Twist1,MMP-2和MMP-9在结直肠癌组织中的表达及意义

目的:研究Twist1、MMP-2和MMP-9蛋白在结直肠癌组织中的表达及其相互关系.方法:建立组织微阵列平台,应用免疫组织化学方法检测92例结直肠癌组织Twist1、MMP-2和MMP-9蛋白的表达情况.结果:结直肠癌中Twist1的表达率为64.1%,MMP-2和MMP-9阳性率分别为66.3%和67.4%;Twi...     

咳喘宁对支气管哮喘大鼠气道重塑及MMP-9、TIMP-1的影响

目的 观察咳喘宁对支气管哮喘大鼠气道形态学和基质金属蛋白酶-9（MMP-9）、基质金属蛋白酶组织抑制剂-1（TIMP-1）的影响.方法 40只SD大鼠随机分为正常组、模型组、咳喘宁高、低剂量组（27 和13.5 g生药/kg体重）、桂龙咳喘宁胶囊对照组（0.41 g/kg体重）,每组8只.除正常组外以卵蛋白致敏并吸入激发法制备大鼠支气管哮喘模型,各治疗组均从第1次哮喘激发开始（造模第3周）至处死前每天灌胃给药,激发并给药4 w后处死大鼠,取肺组织HE染色,彩色图像分析仪测量支气管管壁厚度、平滑肌厚度,采用ELISA双抗体夹心法测定肺组织MMP-9、TIMP-1含量.结果 与正常组比较,模型组大鼠支气管管壁和平滑肌厚度、肺组织MMP-9、TIMP-1含量及二者比值明显增加（P＜0.01）;与模型组比较,各治疗组均可显著降低支气管管壁和平滑肌厚度（P＜0.01）,降低肺组织MMP-9、TIMP-1含量以及二者比值（P＜0.05或P＜0.01）;且咳喘宁高、低剂量组优于桂龙咳喘宁胶囊组（P＜0.05或P＜0.01）.结论咳喘宁可通过降低肺组织MMP-9和TIMP-1含量,调节二者比值,抑制支气管哮喘大鼠气道壁增厚和平滑肌增生肥大,从而抑制支气管哮喘大鼠气道重塑.     

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.