| Literature DB >> 11413161 |
J F Pittet1, M J Griffiths, T Geiser, N Kaminski, S L Dalton, X Huang, L A Brown, P J Gotwals, V E Koteliansky, M A Matthay, D Sheppard.
Abstract
We have shown that the integrin alphavbeta6 activates latent TGF-beta in the lungs and skin. We show here that mice lacking this integrin are completely protected from pulmonary edema in a model of bleomycin-induced acute lung injury (ALI). Pharmacologic inhibition of TGF-beta also protected wild-type mice from pulmonary edema induced by bleomycin or Escherichia coli endotoxin. TGF-beta directly increased alveolar epithelial permeability in vitro by a mechanism that involved depletion of intracellular glutathione. These data suggest that integrin-mediated local activation of TGF-beta is critical to the development of pulmonary edema in ALI and that blocking TGF-beta or its activation could be effective treatments for this currently untreatable disorder.Entities:
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Year: 2001 PMID: 11413161 PMCID: PMC200192 DOI: 10.1172/JCI11963
Source DB: PubMed Journal: J Clin Invest ISSN: 0021-9738 Impact factor: 14.808