Format

Send to

Choose Destination
See comment in PubMed Commons below
Am J Respir Cell Mol Biol. 2002 Oct;27(4):419-27.

Interaction of IL-13 and C10 in the pathogenesis of bleomycin-induced pulmonary fibrosis.

Author information

1
Department of Medicine, Division of Pulmonary and Critical Care Medicine, UCLA School of Medicine, Los Angeles, California 90095, USA.

Abstract

The initial stimulus for inflammatory cell recruitment and the mechanisms responsible for the perpetuation and evolution of chronic inflammation, granulation tissue formation, and fibrosis have not been fully elucidated. Although interleukin (IL)-13, a Th2 cytokine, has been shown to have direct effects on fibroblasts that support fibroproliferation, it is also a potent inducer of a novel CC chemokine, C10, which is chemotactic for mononuclear phagocytes. The macrophage/mononuclear phagocyte has been shown to have a role in the pathogenesis of pulmonary fibrosis, serving as an important source of growth factors that regulate extracellular matrix synthesis. In this study we demonstrate that IL-13 and C10 are elevated in the pathogenesis of bleomycin-induced pulmonary fibrosis. Neutralization of IL-13, but not IL-4, attenuated bleomycin-induced pulmonary fibrosis and levels of C10, suggesting that IL-13 has an important role in the development of pulmonary fibrosis. IL-13 is a potent inducer of C10 in vivo, and neutralization of C10 attenuated bleomycin-induced pulmonary fibrosis and intrapulmonary macrophage numbers. This suggests that IL-13 has a role in the development of pulmonary fibrosis that is independent of its direct effect on fibroblasts and is evidence for an interaction between Th2 cytokines and specific CC chemokines.

PMID:
12356575
DOI:
10.1165/rcmb.2002-0009OC
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Atypon
    Loading ...
    Support Center