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Tumour necrosis factor-alpha processing in interstitial lung disease: a potential role for exogenous proteinase-3.

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Tumour necrosis factor (TNF) blockade has become an important immunomodulatory therapy, particularly in patients refractory to conventional immunosuppression, but responses can be unpredictable. Understanding the complex biology of TNF processing may be key to predicting such responses and reduce

Stimulation of the secretion of latent cysteine proteinase activity by tumor necrosis factor alpha and interleukin-1.

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OBJECTIVE Cultured synovial fibroblast-like cells from 3 patients with rheumatoid arthritis (RA) and 3 patients with osteoarthritis (OA) were evaluated for their potential to secrete cysteine proteinases spontaneously and after stimulation by tumor necrosis factor alpha (TNF alpha) or interleukin-1

Induction of neutral proteinase and prostanoid production in bovine nasal chondrocytes by interleukin-1 and tumor necrosis factor alpha: modulation of these cellular responses by interleukin-6 and platelet-derived growth factor.

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We have previously reported that recombinant human interleukin-1 (IL-1) stimulates matrix erosion in bovine nasal cartilage explants (R. J. Smith et al., Inflammation 13, 367-382, 1989). This action of IL-1 is believed to be caused by matrix-degrading neutral proteinases produced by activated

Plasma levels of soluble interleukin 2 receptor, soluble CD30, interleukin 10 and B cell activator of the tumour necrosis factor family during follow-up in vasculitis associated with proteinase 3-antineutrophil cytoplasmic antibodies: associations with disease activity and relapse.

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OBJECTIVE To evaluate whether T cell activation, as reflected by levels of soluble interleukin 2 receptor (sIL2R), soluble CD30 (sCD30), IL-10 and B cell activator of the tumour necrosis factor family (BAFF) at diagnosis and during initial follow-up, is predictive for persistent or renewed

Relation between tumor necrosis factor-alpha and granulocyte elastase-alpha 1-proteinase inhibitor complexes in the plasma of patients with cystic fibrosis.

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Patients with cystic fibrosis suffer from a chronic, progressively destructive bronchitis characterized by colonization of the airways by Pseudomonas aeruginosa. Cell wall lipopolysaccharides from P. aeruginosa may stimulate secretion of cytokines such as tumor necrosis factor alpha (TNF alpha) by

Involvement of serine proteinase in infectious pancreatic necrosis virus capsid protein maturation and NS proteinase cleavage in CHSE-214 cells.

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An investigation of virus-specific protein maturation in infectious pancreatic necrosis virus (IPNV) infected Chinook salmon embryo cells (CHSE-214) was undertaken. The precursor protein (pVP2-1) of the major mature capsid protein (VP2) was processed sequentially from pVP2-1 to pVP2-2 and VP2.

Tumor necrosis factor-alpha-induced proteolytic activation of pro-matrix metalloproteinase-9 by human skin is controlled by down-regulating tissue inhibitor of metalloproteinase-1 and mediated by tissue-associated chymotrypsin-like proteinase.

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The proteolytic activation of pro-matrix metalloproteinase (MMP)-9 by conversion of the 92-kDa precursor into an 82-kDa active form has been observed in chronic wounds, tumor metastasis, and many inflammation-associated diseases, yet the mechanistic pathway to control this process has not been

Myocardial necrosis produced in animals by means of crystalline streptococcal proteinase.

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Focal myocardial necrosis that was often extensive was found in a high percentage of rabbits, guinea pigs, and mice given a single intravenous injection of crystalline streptococcal proteinase. The findings are discussed in relation to their possible implications for the pathogenesis of the cardiac

Increases in soluble tumor necrosis factor receptors coincide with increases in interleukin-6 and proteinases after major surgery.

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OBJECTIVE To determine whether increases in soluble tumor necrosis factor receptors (sTNFRs) are associated with the levels of cytokines and proteinases in patients undergoing major surgery. METHODS Eleven patients who underwent esophagectomy for squamous cell carcinoma of the thoracic esophagus

Role of leukocytes and amebic proteinases in experimental rat testicular necrosis produced by Entamoeba histolytica.

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To investigate the role of amebic proteinases and host leukocytes, we studied amebiasis experimentally in the rat testis. The degree of inflammation and necrosis produced by different strains was correlated with proteinase activity and with zymograms. Intratesticular injection of axenically grown

Acute hemorrhagic pancreatic necrosis in mice. Effects of proteinase inhibitors on its induction.

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An acute hemorrhagic pancreatitis with fat necrosis (AHPN) was induced in female mice fed a choline-deficient diet containing 0.5% DL-ethionine. The effect of various proteinase inhibitors on the induction of the pancreatitis was evaluated using three parameters, the mortality of the animals, the

Photodynamic therapy combined with a cysteine proteinase inhibitor synergistically decrease VEGF production and promote tumour necrosis in a rat mammary carcinoma.

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OBJECTIVE Photodynamic therapy (PDT) and inhibition of cathepsin B proteases by cystatin (cysteine proteinase inhibitor, CPI) are potential new tumour treatment modalities. We have investigated the efficacy of PDT and CPI alone and in combination on a solid mammary carcinoma transplanted into Wistar

Effect of tumor necrosis factor-induced integrin activation on Fc gamma receptor II-mediated signal transduction: relevance for activation of neutrophils by anti-proteinase 3 or anti-myeloperoxidase antibodies.

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Antineutrophil cytoplasmic autoantibodies (ANCA) have been described in sera of patients with several forms of systemic vasculitis, including Wegener's granulomatosis and microscopic polyarteritis. The two main targets of ANCA in vasculitis are proteinase 3 (PR3) and myeloperoxidase (MPO). ANCA are

Converting enzyme-independent release of tumor necrosis factor alpha and IL-1beta from a stimulated human monocytic cell line in the presence of activated neutrophils or purified proteinase 3.

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Two important cytokines mediating inflammation are tumor necrosis factor alpha (TNFalpha) and IL-1beta, both of which require conversion to soluble forms by converting enzymes. The importance of TNFalpha-converting enzyme and IL-1beta-converting enzyme in the production of circulating TNFalpha and

Inactivation of tumor necrosis factor-alpha by proteinases (gingipains) from the periodontal pathogen, Porphyromonas gingivalis. Implications of immune evasion.

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Porphyromonas gingivalis is one of the major pathogens associated with adult periodontitis, a major chronic inflammatory disease. Potent proteinases elaborated by these bacteria aid directly and indirectly in both the development of the pathophysiology of the disease and in host defense evasion. For

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