منابع مشابه
Stimulation of in vitro human skin collagenase expression by platelet-derived growth factor.
Platelet-derived growth factor (PDGF) is both chemoattractant and mitogenic for stromal cells. Here, we examined the effects of PDGF on collagenase expression by normal human skin fibroblasts. Culturing cells for 24 hr in the presence of PDGF at 0-180 ng/ml resulted in a dose-dependent, saturable increase in collagenase activity in the culture medium that was paralleled by equal increases in im...
متن کاملPlatelet-derived collagenase inhibitor: characterization and subcellular localization.
Purified human platelets were found to contain a collagenase inhibitor that is immunologically, functionally, and chromatographically identical to that produced by human skin fibroblasts. None of the other formed elements of the blood (erythrocytes, granulocytes, mononuclear cells) possessed detectable quantities of this protein. Virtually all the collagenase inhibitor contained within platelet...
متن کاملSecreted Human Neutrophil Collagenase 5647
Collagenase in human neutrophils is found within intracellular granules which can be stimulated to be secreted with phorbol myristic acetate. This extracellular secreted form of neutrophil collagenase was isolated by immunoaffinity chromatography using a monoclonal antibody previously shown to specifically recognize neutrophil collagenase. The enzyme efficiently bound to this column and was ...
متن کاملHuman platelet antigen polymorphism in bronchial asthma
Background: Asthma is recognized as a common cause of disability, of great economic cost, and of preventable deaths. In this study we aimed to test our hypothesis to evaluate the relationship between the Human Platelet Antigen-1(HPA-1) polymorphism and bronchial asthma and its severity, which would suggest genetic variances that may be responsible for expression or activation of these receptors...
متن کاملHuman neutrophil collagenase cleaves x 1 - antitrypsin
Inactivation of the plasma serine-proteinase inhibitor a1-antitrypsin (a1-AT) by neutrophil metalloproteinases has been reported [Vissers, George, Bathurst, Brennan & Winterbourn (1987) Fed. Proc. Fed. Am. Soc. Exp. Biol. 46, 1390a; (1988) J. Clin. Invest. 82, 706-711; Desrochers & Weiss (1988) J. Clin: Invest. 81, 1646-1650]. To identify the enzyme responsible, supernatant from neutrophils sti...
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1974
ISSN: 0021-9738
DOI: 10.1172/jci107715