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Proteins of the matrix metalloproteinase (MMP) family are involved in the breakdown of extracellular matrix in normal physiological processes, such as embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. Most MMP's are secreted as inactive proproteins which are activated when cleaved by extracellular proteinases. The enzyme encoded by this gene degrades type IV and V collagens. Studies in rhesus monkeys suggest that the enzyme is involved in IL-8-induced mobilization of hematopoietic progenitor cells from bone marrow, and murine studies suggest a role in tumor-associated tissue remodeling. 125-kDa urinary gelatinase as being a complex of MMP-9 and NGAL and provides evidence that NGAL modulates MMP-9 activity by protecting it from degradation. 2.2 kb of the promoter region and all 13 exons (3.3 kb) of MMP9 genomic DNA were scanned for polymorphisms. There is a possible role for the (CA)n repeat in renal disease. Active involvement of MMP-2 and -9 in end-stage liver disease and orthotopic liver transplantation. Although MMP-9 level predicts parenchymal brain hemorrhages after tPA treatment, no relationship exists with the C-1562T polymorphism, probably because this mutation is not functional in response to cerebral ischemia in vivo. An intense expression of VEGF and MMP-9 in carotid plaques is related to plaque instability, high degree of stenosis and presence of symptomatic carotid occlusive disease. Arfaptin 1 inhibits ADP-ribosylation factor-dependent secretion of this enzyme induced by phorbol ester in fibrosarcoma cells. Arsenic trioxide directly downregulates radiation-induced MMP-9 mRNA expression by inhibiting nuclear factor kappaB activity in human cervical cancer cells. Block of mmp9 induction via vegfr-1 inhibition could be useful for the prevention of tumor metastasis in lung. Bombesin-dependent pro-MMP-9 activation in prostatic cancer cells requires beta1 integrin engagement. Both MMP-9 and TIMP-1 levels were higher in the hypertensive group. Both active gelatinases were detected in tears of severe corneal ulcer or severe ocular burn cases. The active form of gelatinase expression may be related to the severity of ulceration. C/C homozygosity at the C-1562T polymorphism of the promoter may be protective against coronary artery disease in Koreans. CDK9 mediates TNF-alpha-induced MMP-9 transcription. Chorioamnionitis is associated with increased lung type IV collagenase levels in the ventilated preterm infant. Antenatal lung inflammation with up-regulation of MMP-9 may be important in the pathogenesis of chronic lung disease. Circulating pretreatment MMP-9 and TIMP-1 levels were significantly higher in patients with hypertension. Crystal structure of human MMP9 in complex with a reverse hydroxamate inhibitor. Data demonstrate that blockade of the ERK pathway suppressed the expression of matrix metalloproteinases 3, 9, and 14, and CD44, and markedly inhibited the invasiveness of tumor cells. Data show that matrix metalloproteinase-9 expression in human lung parenchyma is associated with cigarette smoking and with obstruction of airflow, suggesting that MMP-9 may play a role in the pathogenesis of COPD. Data show that tissue plasminogen activator upregulates matrix metalloproteinase-9 in cell culture and in vivo, and that this is mediated by the low-density lipoprotein receptor-related protein. Data suggest that MMP-9 has a role in tumor progression of head and neck carcinomas, as well as in estimation of the prognosis of these diseases. Details of cleavage of pro-MMP-9 by MMP-26, facilitating the efficient cleavage of fibronectin by MMP-9, and promoting invasiveness of ARCaP cells across fibronectin or type IV collagen. Different regulatory mechanisms of MMP-9 production and/or activity between primary progressive/transitional progressive and relapsing-remitting multiple sclerosis. EGFR, c-erbB-2, VEGF and MMP-2 and MMP-9 play an important role in tumor growth, invasion and metastasis in squamous cell carcinoma of the head and neck. Elevated serum MMP-9 in systemic lupus erythematosus may reflect neuropsychiatric involvement, particularly cognitive dysfunction. Serum MMP-9 concentration may be associated with small-vessel cerebral vasculopathy and risk of cerebral ischemia. Endometrial MMP-9 activity is overall controlled by the ovarian steroids and locally adjusted through a network of modulators, including LEFTY-A. Endometriosis-associated increase in proteolysis and imbalance between of MMP-9 and of TIMP-1 in culture medium of endometrial tissue may reflect in vivo enhanced capacity of this tissue to break down the extracellular matrix in host tissues. Exposure of cryptic domains in the alpha 1-chain of laminin-1 by elastase stimulates macrophages urokinase and matrix metalloproteinase-9 expression. Expression in colorectal carcinomas relating to size and invasiveness of the tumor. Expression of MMP-2 and MMP-9 in breast cancer seems to be partly related to expression of AP-2 and HER2. Expression of MMP9 is elevated during PBSC mobilization by G-CSF. FGF-2 and TPA induce matrix metalloproteinase-9 secretion in MCF-7 cells through PKC activation of the Ras/ERK pathway. Fibroblasts promote breast cancer cell invasion by upregulating tumor matrix metalloproteinase-9 production. Fusobacterium nucleatum subsp. nucleatum increases its tissue-invasive potential by acquiring cell-associated human matrix metalloproteinase 9 (MMP-9) activity. GDNF upregulates expression and enzymatic activity of MMP-9 through different signaling pathways. GDNF modulates MMP-9 expression and activation, and this may promote pancreatic cancer invasion. HBV affects the malignance of hepatocellular cancer by elevating MMP-9 activity. HBV infection of hepatocytes and HepG2 cells affected the upregulation of MMP-9 expression and MMP-9 activation and, increased the invasion potential by plasmin, this is a report showing that an HBV infection is linked to the upregulation of MMP-9 in HCC. HBx contributed to MMP-9 transcriptional regulation through the ERKs & PI-3K-AKT/PKB pathway. Enhanced expression of MMP-9 by activation of these signals is eventually associated with the invasive potential of cells. HGF, SDF-1, and MMP-9 have roles in stress-induced human CD34+ stem cell recruitment to the liver. Helicobacter pylori infection results in substantially increased in the gastric mucosa, probably contributed to in large part by tissue-resident macrophages. Hyaluronan-CD44 interaction inhibits migration of osteoclast-like cells by down-regulating MMP-9. Hypoxia induces an increased invasive capacity via gelatinase up-regulation without loss of cell viability in adenocarcinomas. IL-8-induced MMP-9 release from neutrophils is mediated through CXCR2 and involves two distinct pathways, one involving PKC and ERK1/2 and the other involving Src-family kinases. ILK activity is aassociated with upregulation of MMP-9 mRNA levels during podocyte stress. In melanoma cells microtubule-dependent traffic of MMP2/mmp9-containing vesicles and exocytosis are critical steps for invasive behavior. In patients with recurrent ovarian cancer the activated forms of MMP-9 were significantly higher compared to ovarian cancers without recurrence. In the recurrent implantation failure group, the MMP score and IL-1beta concentration were significantly higher than those in the control group, whereas concentrations of IFN-gamma and IL-10 were significantly lower. Increase of CD44s, MMP-9, and Ki-67 were involved in the growth and local invasion of osteosarcoma. Increase of pro-MMP-9 circulating in the blood of amyotrophic lateral sclerosis (ALS) patients may link to a primary pathogenetic mechanism, while elevated pro-MMP-9 levels may also rise as a consequence of secondary nerve and muscle damage in ALS. Increased gelatinase in culture medium of toxic epidermal necrolysis or Stevens-Johnson syndrome skin maintained in organ culture and in blister fluid indicates that these gelatinases may be responsible for detachment of epidermis in these diseases. Increased plasma MMP-9 is associated with colorectal cancer. Induction of MMP-9 secretion is related to the inflammation including apoptosis of keratinocytes resulting from UVB irradiation. Interferons inhibit tumor necrosis factor-alpha-mediated matrix metalloproteinase-9 activation via interferon regulatory factor-1 binding competition with NF-kappa B. MIF and MMP-9 are markedly upregulated in vulnerable atheromatous plaques. The ability of MIF to induce MMP-9 expression in VSMCs and macrophages suggests that MIF may play a role in the destabilization of human atherosclerotic plaques. MMP and TIMP may be involved in the feto-neonatal development and may contribute to the pathogenesis of bronchopulmonary dysplasia and/or intraventricular hemorrhage in critically ill preterm neonates. MMP-2 and MMP-9 expressions are prognostic factors predicting the recurrence of meningioma, independent of proliferative potential. MMP-2 or MMP-9 mediated tumor cell invasion requires integrin cytoplasmic-tail motif EKQKVDLSTDC. MMP-26 was colocalized with MMP-9, TIMP-2, and TIMP-4 in breast cancer cells. MMP-9 activity is inhibited by ascochlorin through suppression of AP-1-dependent induction of MMP-9 gene expression. MMP-9 activity is significantly elevated in SLE patients and correlated with disease activity in males but not females. These results suggest that MMP-9 plays a role in the pathogenesis of SLE. MMP-9 and LM-R are useful indexes for predicting the metastasis and prognosis of breast cancer. MMP-9 expression is inhibited by CIITA by binding to and sequestering CREB-binding protein. MMP-9 expression showed a tendency toward an adverse outcome of Hodgkin's lymphoma. MMP-9 induction by H. pylori may play an important role in gastric inflammation, ulcer formation, and carcinogenesis. MMP-9 inhibition activity of resveratrol and its inhibition of JNK and PKC-delta may have a therapeutic potential in cancer. MMP-9 is increased in tuberculous pleural effusions compared with transudates and malignant pleural effusions of lung cancer and is produced predominantly by epithelioid cells in the granulomas of tuberculous pleural tissues. MMP-9 level and TIMP-1 levels increased after birth but are not linked to bronchopulmonary dysplasia outcome; low MMP-2 level at birth is associated with the development of BPD. MMP-9 may contribute to eosinophil and mast cell migrations into nasal polyp tissue. MMP-9 may have a role in the higher migrational capacity of CB CD34(+) cells, which may be beneficial to homing of these cells to the BM environment. MMP-9 may not only play a role in the pathogenesis of COPD, but also relate to FEV(1.0)% of prediction and RV/TLC%. MMP-9 plasma level was significantly higher in patients undergoing thrombolytic therapy whose arteries were not recanalized; MMP-9 may be associated with the formation of a thrombolytics-resistant thrombus. MMP-9 plays an important role in inflammatory peripheral neuropathy probably as means for inflammatory cell invasion. MMP-9 release from eosinophils is regulated by signaling through p38 MAP kinase. MMP-9 released from neutrophils may be involved in the pathogenesis of bronchial asthma and COPD. MMP-9 seems to be involved in ischemia/reperfusion injury during human liver transplantation. MMP-9 was increased regionally in the infarct-related coronary artery, at 11.8 ng/ml vs 8.2 ng/ml in the ascending aorta (p<0.001). MMP-9 was only expressed when lung fibroblasts were grown on collagen type IV and increased with serum concentration, and by hypoxia. MMP-9 within tuberculous granuloma is associated with tissue destruction; monocytic cells packed together at the center of tuberculous granuloma exhibit strong cytoplasmic staining for MMP-9, but not TIMP-1. MMP3, MMP9, and TGFbeta1 are important for the modulation, composition, and maintenance of the ECM in oral squamous cell carcinoma. MMP9 activation is increased by Eph B4 receptor stimulation in human cells. MMP9 expression is regulated by MTA1 via histone-dependent and independent mechanisms in human cells. MMP9 immunoreactivity was present in polymyositis, dermatomyositis and focal myositis. MMP9 is activated by SDF1 in bone marrow cells, causing release of soluble Kit-ligand and transfer of hematopoietic stem cells from a quiescent to a proliferative niche. MMP9 is activated through an oxidative pathway in pneumococcal meningitis. MMP9 is expressed in the unstable coronary atherosclerotic plaque, as are its transcriptional and posttranscriptional regulators. MMP9 plays a role in the release of biologically active VEGF and consequently in the formation of ascites in ovarian cancer. Membrane-bound MMP-9 on PMN may play pathogenetic roles in inflammatory lung diseases. Migration of CD4+ T cells is dependent on MMP9 expression; T-helper type 2 (Th2) cells secrete lower levels of MMP9 and have less migratory capacity in comparison to Th1 cells. Multiple signaling pathways involved in activation of matrix metalloproteinase-9 in breast cancer cells. NF kappa B plays a in the regulation of MMP-9 expression and the ability of dykellic acid to suppress phorbol myristate acetate induction of MMP-9, with decreased MMP-9 promoter activity and mRNA expression. NF-kappaB-dependent MMP-9 plays a key role in Platelet-activating factor-induced angiogenesis. Nitric oxide concentrations could impact on capillary formation via a combination of direct effects on MMP activation and by altering the distribution or abundance of Cav-1 in tumor angiogenesis. No allelic associations have been found between multiple sclerosis and the CA microsatellite marker in the promoter region of the gelatinase B gene in Belgian study populations. Our results indicate that the T allele in the MMP-9 promoter is associated with the invasive phenotype of gastric cancer. Over expression of MMP-9 is associated with nonsmall cell lung carcinoma progression. Overexpressing functional TIMP-1- enhanced migration of HepG2-TIMP-1 cells depends on enhanced MMP-activity, especially MMP-9. Overexpression of MMP-2 and MMP-9 in squamous cell carcinomas of immunosuppressed patients. Overexpression of matrix metalloproteinase 9 is associated with prostate cancer. PBMCs from SLE patients expressed a significantly higher activity of MMP-9 and spontaneously released higher levels of MMP-9, as compared to healthy donors. PTEN suppresses hyaluronic acid-induced matrix metalloproteinase-9 expression in U87MG glioblastoma cells through focal adhesion kinase dephosphorylation. Plasma MMP-9 concentrations decrease aafter insulin infusion. Plasma levels are increased in type 2 diabetic patients. Polymorphisms of the matrix metalloproteinase-9 gene influences the development of coronary artery disease. Primary GBMs were significantly more likely than secondary GBMs to contain active MMP-9. Active MMP-9 expression occurred in 83% of the EGFRvIII-immunopositive tumors only. Pro-MMP-9 is a specific macrophage product and is activated by osteoarthritic chondrocytes via MMP-3 or a MT1-MMP/MMP-13 cascade. Production of matrix metalloproteinase-9 in early stage B-CLL is suppressed by interferons alpha and gamma. RAGE and MMP-9 are expressed concordant with metastatic ability of human pancreatic cancer cells. RECK/MMP-9-balance is an informative prognostic indicator for colorectal cancer. REVIEW: Role of gelatinase B in leukocytosis and stem cell mobilization. RNAi inhibits MMP9 gene expression in a glioblastoma cell line. Requirement for PKC-dependent NF-kappaB activation for induction of MMP-9 in hepatocellular carcinoma cells. Respiratory syncytial virus infection of HEp-2 cells induces matrix metalloproteinase-9 expression. Results define molecular details for several interactions mediated by the different MMP-9 domains, using specific MMP-9 peptide inhibitors. Results suggest that gastrin increases MMP-9 expression, which is associated with increased invasion, and this is a putative mechanism regulating remodelling of the gastric epithelium. RhoA induced the expression of MMP-9; clustering of MMP-9 was observed in advancing lamellipodia at the forefront of endothelial cells, where this proteinase colocalized with RhoA and CD44. Serum MMP-9 does not relate to the late phase of hepatic ischmeic reperfusion injury after human orthotopic liver transplantation. Significant association with poor survival by MMP-9. Significantly elevated metalloproteinase 9 in broncho-alveolar lavage fluid is associated with Bronchiolitis obliterans. Streptococcus pyogenes SpeB activates proMMP-9 with subsequent release of proapoptotic TNF-alpha and sFasL leading to apoptosis, tissue damage and streptococcal invasion in the host. Subepithelial basement membrane immunoreactivity for matrix metalloproteinase 9: association with asthma severity, neutrophilic inflammation, and wound repair. The -1562C-->T polymorphism of matrix metalloproteinase-9 was associated with bone mineral density in Japanese men. The CC chemokines CCL2 (MCP-1), CCL3 (MIP-1alpha), and CCL5 (RANTES) stimulated the release of monocyte MMP-9 protein in a bell-shaped dose-dependent manner. The MMP-9 C-1562T promoter polymorphism genotype is associated with large artery stiffening and aortic MMP-9 gene & protein expression, increasing susceptibility to myocardial ischemia. The Matrix Metalloproteinase-9 was expressed of cultured human uveal melanocytes, and analysis revealed the Matrix Metalloproteinase-9 mRNA. The X-ray crystal structure of the proform of human matrix metalloproteinase MMP9 has been solved to 2.5 A resolution. The analysis of MMP-9 in synovial fluid samples can reveal the inflammatory condition of the knee joints with gouty arthritis. The expression of MMP-9 was positively related to the tumor invasiveness and metastasis in gastric cancers. The expression of MMP-9 was significantly increased in mesangial proliferative glomeruli and interstitial vascular walls of IgA nephropathy patients. The expression of MMP-9, TIMP-1 and TIMP-2 was lower in the benign and low malignancy ovarian tumors compared with the malignant ones. The interaction between MMP-9 and TIMP-1 in the processes of gastric tumor invasion and metastasis is that MMP-9 mainly promotes tumor invasion and metastasis and TIMP-1 inhibits functions of MMP-9. The most invasive cell line secreted the highest amounts of MMP-2 and MMP-9. The over-expression of MMP-2, MMP-9, TIMP-1, and TIMP-2 may play a key role in invasion and lymph-node metastasis of in squamous carcinoma of the cervix. The plasma MMP-9 levels in patients with HCC were significantly higher than those in the normal controls. The presence of MMP-9 was found in endometrial cancer, correlating with estrogen receptor alpha and uteroglobin levels. The present results indicate that MMP-2 can be helpful in diagnosing Takayasu arteritis [TA] and that MMP-3 and MMP-9 can be used as activity markers for TA. The purpose of this study was to evaluate the roles of matrix metalloproteinases (MMPs) and urokinase-type plasminogen activator (uPA) with regard to varicose veins (VVs). This is the first demonstration that Akt is involved in the signaling pathway leading to the production of monocyte MMP-9. Treatment of THP-1 cells with recombinant TL1A in combination with IFN-gamma also caused induction of MMP-9 and interleukin-8. Ultraviolet A downregulates MMP-9 in keratinocytes. Upregulation of mmp-9 ia assiciated with neoplasm invasiveness in Hereditary nonpolyposis colorectal cancers. Various growth factors induce migration of human non-small cell lung cancer cells in the presence of extracellular matrix (ECM) components MMP-2 and MMP-9. We have determined the functional significance of a variable number tandem repeat and a single nucleotide polymorphism (SNP) in the MMP-9 gene on promoter activity and their association with preterm premature rupture of membranes (PPROM). A mechanism for ROS function in Vascular cell adhesion molecule 1 (VCAM-1) activation of endothelial cell MMP2 and MMP9 during VCAM-1-dependent lymphocyte migration. A negatively charged peptide motif within the catalytic domain of MMP9 mediates binding to leukocyte beta 2 integrins. Activity significantly higher in lung cancer cells than uninvolved lung parenchyma; may be involved in tumor progression. Altered MMP/TIMP ratios in maternal blood during gestational hypertension. An overview of mmp-9 gene expression in different cell types, from the triggering of cell-surface receptors, to the activation of cytoplasmic mediators and transcription factors responsible for the activation of MMP-9 promoter--REVIEW. Breast cancer phenotype and outcome can be influenced by common functional polymorphisms in MMP genes. Cleave IGFBP-1 at (145)Lys/Lys(146), resulting in a small (9-kDa) C-terminal peptide of IGFBP-1 in first trimester decidua. Collagen type II immunodominant epitopes remain intact after cleavage by gelatinase B and may become available, processed as antigens and presented in MHC-II molecules. Coordination of cell signaling, chromatin remodeling, histone modifications, and stepwise recruitment of transcription regulators is critical to precisely regulate MMP-9 gene transcription in a temporally and spatially dependent manner. Data demonstrated a moderate elevation of matrix metalloproteinases-2 and significant upregulation of matrix metalloproteinases-9 in stable cell lines overexpressing gamma-synuclein. Data indicate that matrix metalloproteinase-9 is produced by the amnion but not the chorion in response to lipopolysaccharide; tumor necrosis factor-alpha and interleukin-1 beta appear to upregulate its production by the amnion. Data indicate the involvement of matrix metalloproteinase 2 and matrix metalloproteinase 9 in the cervical ripening. Destruction of the surrounding matrix by endometriosis might be caused by various MMPs, which are mainly produced in stromal cells. Downregulated by Cytomegalovirus IL-10 activity in uterine microvascular endothelial cells and differentiating-invading cytotrophoblasts. Effect of titanium, zirconia and alumina ceramics on activity and secretion in human osteoblasts. Elevated pro-MMP-9 enzyme during the acute phase of Kawasaki disease may reflect vascular remodeling or an inflammatory response to a microbial agent, suggesting a pathophysiological role for MMP-9 in coronary aneurysm formation. Evaluation of the effect of increased levels of active MMP-9 in the central nervous system. Expression of MMP-9 in cervical cancer. Expression up-regulated in Helicobacter species-infected colon and bile duct epithelial cells and hepatocytes. First report to show that cultured HUVE constitutively express MMP9 and that this secretion is restricted to very early-passage cells. Gelatinase B and neutrophil collagenase cleave MIG and IP-10. Gelatinolytic activity in situ, in tissue sections of term placenta, is co-localized with gelatinase B. Hemoglobin stimulates the secretion of uPA, MMP-2 and MMP-9 by synovial tissues; possible role of hemoglobin in joint damage after intra-articular bleeding. High levels of plasma MMP-9 activity is associated with evidence of recurrence in breast cancer. In differentiating trophoblasts Nitric Oxide regulates the induction of MMP-2 and MMP-9 required for invasion during embryo. In pancreatic cancer, invasion into large veins and destroyed type veins could be a risk factor for liver metastasis and that increased expression MMP-2 and MMP-9 were related to such invasion. In wounded keratinocytes, upregulation of matrix metalloproteinase-9 depends on two distinct pathways: Rac1 and/or Cdc42 that control the activation of p38[MAPK] and RhoA activation that is required for stimulation of JNK. Increasing expression and endometrial carcinoma appear closely related. Integrin alphavbeta3 cooperates with metalloproteinase MMP-9 in regulating migration of metastatic breast cancer cells. Involvement of MMPs in microinvasive carcinomas. Length alteration of the d(CA) repeat in the MMP-9 promoter may cause phenotypic differences among HTLV-I infected infiltrating cells and may thereby be in part responsible for the development of HTLV-1 associated myelopathy (HAM/TSP). Marked difference in MMPs and their inhibitors in the in vitro fertilized women and normally ovulating women. Matrix metalloproteinase 9 (gelatinase B, 92kD gelatinase, 92kD type IV collagenase). Matrix metalloproteinase 9 (gelatinase B, 92kDa gelatinase, 92kDa type IV collagenase). Matrix metalloproteinase-2 and 9 and membrane-type 1 matrix metalloproteinase mRNA expression in endometriosis was higher than in normal endometrium whereas E-cadherin, alpha- and beta-catenin mRNA expression was not suppressed in endometriosis. Matrix metalloproteinase-9 activation and association with integrin are inhibited by ganglioside GM3. May be involved in the process of arterial stiffening and development of isolated systolic hypertension. Membrane location can influence MMP9 activity in vitro and in vivo, and confirmation of the relevance of stromal-associated, but not tumor-bound MMP9 in mediating tumor-induced angiogenesis. Mmp-9 production in bronchial epithelial cells is inhibited by S-nitrothiols. Monocyte matrix metalloproteinase-1 and -9 are differentially regulated by interferon gamma through tumor necrosis factor-alpha and caspase 8. Not expressed by intestinal myofibroblasts in inflammatory bowel disease. Novel regulation for the proteolytic activation of MMP-9 in human tissue. Novel regulation for the proteolytic activation of MMP-9 in human tissue (tissue-associated chymotrypsin-like proteinase, pM9A). Overexpression of MMP-9 in HTLV-I- infected cells may be in part responsible for the invasiveness of adult T-cell leukemia cells. Ox-LDL and HDL lipoproteins regulate the production by activated monocytes. Oxidative stress-dependent MMP-9 induction in brain capillary endothelial cells was accompanied by a significant increase in the NF-kappaB localized in the nuclei. Palpable tumours demonstrated significantly more MMP-2 and significantly less MMP-9 expression than nonpalpable tumours. Plasma levels are increased during G-CSF induced hematopoietic stem cell mobilization. Polymorphism in the promoter region may not have a relationship with implant loss. ProMMP-9 has a novel role in providing a cellular switch between stationary and migratory cell phases. Results indicate that two kinds of pro-form and active-form matrix metalloproteinases, MMP-2 and MMP-9, and their degradation products, are present in human seminal plasma. Results present proMMP-9 as a novel early indicator of acute host-response in pleural space that complements traditional proinflammatory markers and might be useful in monitoring pleural inflammatory processes. Results strongly support that sTNF up-regulates in an autocrine manner PAI-1 and MMP-9 syntheses during promyelocyte to monocyte differentiation; in more advanced differentiated stages, released sTNF is not a major determinant of PAI-1 and MMP-9 syntheses. Results suggest that matrix metalloproteinase-9 and matrix metalloproteinase-2 contribute to caspase-mediated brain endothelial cell death after hypoxia-reoxygenation by disrupting cell-matrix interactions and homeostatic integrin signaling. Role of MMP9 in aortic aneurysms. Roughly constitutive TIMP-1 expression opposed to an inducible MMP-9 synthesis in Epstein--Barr virus-immortalized B lymphocytes. SICAM-1 was processed distal to Arg441, indicating that MMP-9, docking to ICAM-1, contributes to sICAM-1 shedding and attenuation of the shear stress-induced upregulation of ICAM-1. Secreted pro-MMP-2 and pro-MMP-9 are downregulated by farnesyltransferase inhibitors in carcinoma cells. Secretion in primary human monocytes induced by chemokines. Serum amyloid A plays a role in the modulation of inflammatory and immune responses via formyl peptide receptor like 1, by inducing MMP-9 upregulation. Shed as membrane vesicle associated components by endothelial cells and this may be a mechanism for regulating focalized proteolytic activity vital to invasive and morphogenic events during angiogenesis. Signalling pathways involved in MMP-9 regulation at the maternal-fetal interface. Significant increase of MMP-9 and TIMP-1 in the urine of children with acute pyelonephritis. Significantly increased activity seen in plasma of head and neck squamous cell carcinoma patients. Specific up-regulation of MMP-9 in the erythema migrans skin lesions of patients with acute Lyme disease; may play a role in the dissemination of B. burgdorferi. Stimulated expression of MMP-1 and MMP-9 may contribute to the invasive activity and the bone and cartilage loss in pigmented villonodular synovitis. Structural basis of the adaptive molecular recognition by MMP9. The coordinated modulation of MMP-9 transcription via the TRE and the KRE-M9 elements is important in epidermal and mesenchymal tissues. The particular combination of MMP3 and MMP9 genotypes present at susceptibility loci may contribute to heterogeneity in the presentation of atherosclerosis. Thrombospondin-1 plays a role in the up-regulation of MMP-9 expression in gastric cancer. Triple-helical peptides are highly selective substrates for and are hydrolyzed by human MMP2 and MMP9. UPAR and MMP-9 have roles in inhibiting cell proliferation and can reduce the levels of phosphorylated forms of MAPK, ERK, and AKT signaling pathway. Vascular MMP-9 expression may play a role in the pathogenesis of spontaneous intracerebral hemorrhage--REVIEW. Vascular endothelial growth factor and matrix metalloproteinase-9 expression in osteolytic lesions of bone co-relates well with the extent of bone destruction and local recurrence.
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