The role of transforming growth factor-beta1 in airway inflammation of childhood asthma (Articolo in rivista)

Type
Label
  • The role of transforming growth factor-beta1 in airway inflammation of childhood asthma (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gagliardo R, Chanez P, Gjomarkaj M, La Grutta S, Bonanno A, Montalbano AM, Di Sano C, Albano GD, Gras D, Anzalone G, Riccobono L, Profita M (2013)
    The role of transforming growth factor-beta1 in airway inflammation of childhood asthma
    in International journal of immunopathology and pharmacology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gagliardo R, Chanez P, Gjomarkaj M, La Grutta S, Bonanno A, Montalbano AM, Di Sano C, Albano GD, Gras D, Anzalone G, Riccobono L, Profita M (literal)
Pagina inizio
  • 725 (literal)
Pagina fine
  • 738 (literal)
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  • 26 (literal)
Rivista
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  • 14 (literal)
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  • 3 (literal)
Note
  • PubMe (literal)
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  • Institute of Biomedicine and Molecular Immunology, Unit of Immunopathology and Pharmacology of the Respiratory System, A. Maurizio Vignola Laboratories, Italian National Research Council, Palermo, Italy (literal)
Titolo
  • The role of transforming growth factor-beta1 in airway inflammation of childhood asthma (literal)
Abstract
  • TGF-beta-targeting structural and inflammatory cells has been implicated in the mechanisms leading to the inflammatory and restructuring processes in asthma, suggesting an impact of TGF-beta1 signaling on the development and persistency of this disease. We investigated the potential early involvement of TGF-beta1 activity in the immunological and molecular mechanisms underlying progression of inflammation in childhood asthma. We evaluated the levels of TGF-beta1 in induced sputum supernatants (ISSs) and the expression of small mother cell against decapentaplegic (Smad) 2 and Smad7 proteins in induced sputum cells (ISCs) from children with intermittent asthma (IA), moderate asthma (MA) and control subjects (C). Furthermore, we investigated the regulatory role of TGF-beta1 activity on eosinophil and neutrophil adhesion to epithelial cells using adhesion assay, and on the granulocyte expression of adhesion molecule CD11b/CD18 Macrophage-1 antigen (MAC-1), by flow cytometry. We found that the levels of TGF-beta1 are increased in ISSs of IA and MA in comparison to C, concomitantly to the activation of intracellular signaling TGFbeta/Smads pathway in ISCs. In MA, TGF-beta1 levels correlated with the number of sputum eosinophils and neutrophils. Furthermore, we showed the ability of sputum TGF-beta1 to promote eosinophil and neutrophil adhesion to epithelial cells, and to increase the expression of MAC-1 on the granulocyte surface. This study shows the activation of TGFbeta/Smad signaling pathway in the airways of children with IA and, despite the regular ICS treatment, in children with MA, and provides evidence for the contribution of TGF-beta1 in the regulation of granulocyte activation and trafficking (literal)
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