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gelatinase/nécrose
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Tumor necrosis factor stimulates gelatinase and collagenase production by granulation tissue in culture.
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Tumor necrosis factor (TNF, 2.6 X 10(-11)-10(-9) M) caused an increase in the production of active gelatinase and latent collagenase by granulation tissue in culture. As determined by SDS-substrate polyacrylamide gel electrophoresis, granulation tissue produced mainly two species of gelatinase with
Tumor necrosis factor alpha and lymphotoxin stimulate human myeloblastic leukemia cell (ML-1) invasion through a reconstituted basement membrane (Matrigel) with concomitant induction of 92 kDa gelatinase secretion.
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We have examined the effects of tumor necrosis factor alpha (TNF) and lymphotoxin (LT) on gelatinase (72 kDa and 92 kDa) and tissue inhibitor of metalloprotease 1 (TIMP1) secretion by human myeloblastic leukemia cells (ML-1) in vitro. TNF (0.1-30 ng/ml) significantly stimulated 92 kDa gelatinase
Expression of matrix metalloproteinase 9 (92-kDa gelatinase/type IV collagenase) induced by tumour necrosis factor alpha correlates with metastatic ability in a human osteosarcoma cell line.
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We have examined the correlation between matrix metalloproteinase (MMP) expression and metastatic properties of a low metastatic osteosarcoma cell line, osteosarcoma takase (OST), under stimulation by tumour necrosis factor alpha (TNF alpha). In vivo, OST cells exhibited significantly increased
Cytokine regulation of gelatinase production by head and neck squamous cell carcinoma: the role of tumor necrosis factor-alpha.
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Gelatinases (GLs) belong to a family of enzymes known as matrix metalloproteinases (MMPs), which are produced by both normal and neoplastic cells. These enzymes have been implicated in tumor invasion and metastasis, although the mechanism of regulation of tumor MMP production is unknown. Since our
[Effect of recombinant human tumor necrosis factor alpha on activity of gelatinase B and migration of human umbilical cord blood mononuclear cells in vitro].
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This study was aimed to investigate the activity of matrix metalloproteinase-9 (MMP-9) in umbilical cord blood mononuclear cells, the effect of recombinant human tumor necrosis factor alpha (rhTNF-alpha) on the activity of MMP-9 and cell migration capability of umbilical cord blood mononuclear
Collagenase-1, stromelysin-1 and 92 kDa gelatinase are associated with tumor necrosis factor-alpha induced morphological change of human endothelial cells in vitro.
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Recently, we have shown that the tumor necrosis factor-alpha (TNF-alpha)-induced morphological change of EA.hy 926 human endothelial cells is associated with a decrease in the net synthesis of two proteoglycans (PGs), biglycan and syndecan-1, both of which have been suggested to play a role in cell
Induction of neutrophil gelatinase-associated lipocalin expression by co-stimulation with interleukin-17 and tumor necrosis factor-alpha is controlled by IkappaB-zeta but neither by C/EBP-beta nor C/EBP-delta.
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Neutrophil gelatinase-associated lipocalin (NGAL) is a siderophore-binding antimicrobial protein that is up-regulated in epithelial tissues during inflammation. We demonstrated previously that the gene encoding NGAL (LCN2) is strongly up-regulated by interleukin (IL)-1beta in an NF-kappaB-dependent
Matrix metalloproteinase production by cultured human endometrial stromal cells: identification of interstitial collagenase, gelatinase-A, gelatinase-B, and stromelysin-1 and their differential regulation by interleukin-1 alpha and tumor necrosis factor-alpha.
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Matrix metalloproteinases (MMPs) together degrade virtually all the components of the extracellular matrix and are likely to play a role in remodeling of endometrial tissue during the normal menstrual cycle. Primary cultures of human endometrial stromal cells secreted a number of MMPs. MMP-1
Expression of gelatinase/type IV collagenase in tumor necrosis correlates with cell detachment and tumor invasion.
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We have previously observed that acellular extracts from necrotic areas (NE) of the non-metastatic murine mammary adenocarcinoma M3, enhance in vitro cell detachment and spontaneous lung metastases. In the present study, using different proteinase inhibitors along with NE, only the calcium chelator
Tumor necrosis factor-alpha-induced gelatinase B causes delayed opening of the blood-brain barrier: an expanded therapeutic window.
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Proteolytic damage is a late event in the molecular cascade initiated by brain injury. Earlier, we proposed that matrix metalloproteinases (MMPs) and urokinase-type plasminogen activator (uPA) are important in secondary brain injury. We have shown that intracerebral injection of activated 72-kDa
Regulation of 92-kD gelatinase release in HL-60 leukemia cells: tumor necrosis factor-alpha as an autocrine stimulus for basal- and phorbol ester-induced secretion.
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Matrix metalloproteinase 9 (MMP-9), also known as 92-kD type IV collagenase/gelatinase, is believed to play a critical role in tumor invasion and metastasis. Here, we report that MMP-9 was constitutively released from the human promyelocytic cell line HL-60 as determined by zymographic analysis.
Induction and stimulation of 92-kDa gelatinase/type IV collagenase production in osteosarcoma and fibrosarcoma cell lines by tumor necrosis factor alpha.
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Production of a 92-kDa gelatinase/type IV collagenase and tissue inhibitor of metalloproteinases (TIMP) was investigated with human sarcoma cell lines. Among the cytokines and growth factors examined, only human recombinant tumor necrosis factor alpha (TNF alpha) induced and stimulated the
Partial purification of gelatinases and effect of anti-inflammatory drugs on the tumor necrosis factor-stimulated production of active gelatinase by granulation tissue in culture.
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Gelatinases produced by granulation tissue in culture were separated into two fractions when the conditioned medium was chromatographed on diethylaminoethyl-Sephacel; one contained latent and active gelatinases with molecular weight of about 74 kDa (low-Mr gelatinase), and the other contained an
Assessment of gelatinase and tumor necrosis factor-α level in the vitreous and serum of patients with Eales disease: role of inflammation-mediated angiogenesis in the pathogenesis of Eales disease.
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BACKGROUND
Eales disease (ED) is an idiopathic, inflammatory, venoocclusive disorder of peripheral retina resulting in retinal angiogenesis and vitreous hemorrhage. The objective of the present study is to investigate the expression and activation of gelatinase associated with the retinal
Autocrine regulation of macrophage differentiation and 92-kDa gelatinase production by tumor necrosis factor-alpha via alpha5 beta1 integrin in HL-60 cells.
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Tumor necrosis factor-alpha (TNF-alpha) gene is one of the early response genes induced by phorbol 12-myristate 13-acetate (PMA) in human HL-60 myeloid leukemia cells. In the present study, we examined the role of the TNF-alpha autocrine loop in PMA-induced macrophage differentiation and gene
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