alexa Apoptosis of airway epithelial cells induced by corticosteroids.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Steroids & Hormonal Science

Author(s): Dorscheid DR, Wojcik KR, Sun S, Marroquin B, White SR

Abstract Share this page

Abstract Damage to the airway epithelium is one prominent feature of chronic asthma. Corticosteroids induce apoptosis in inflammatory cells, which in part explains their ability to suppress airway inflammation. However, corticosteroid therapy does not necessarily reverse epithelial damage. We hypothesized that corticosteroids may induce airway epithelial cell apoptosis as one potential explanation for persistent damage. We tested this hypothesis in cultured primary central airway epithelial cells and in the cell line 1HAEo(-). Treatment with dexamethasone, beclomethasone, budesonide, or triamcinolone each elicited a time-dependent and concentration-dependent cell death. This cell death was associated with cleavage of nuclear chromatin, mitochondrial depolarization, cytochrome c extrusion, activation of caspase-9, and expression of phosphatidylserine on the outer cell membrane. Inhibitors of caspase activity blocked apoptotic cell death, as did overexpression of the apoptosis regulators Bcl-2 or Bcl-x(L). We demonstrated that CD95 ligation is not essential for the corticosteroid-induced apoptosis in airway epithelial cells. These data demonstrate that corticosteroids induce apoptotic cell death of airway epithelium. This raises the possibility that at least one of the major components of chronic airway damage in asthma, epithelial shedding and denudation, may in part result from a major therapy for the disease. This article was published in Am J Respir Crit Care Med and referenced in Journal of Steroids & Hormonal Science

Relevant Expert PPTs

Relevant Speaker PPTs

  • Xavier Guerrero-Pich
    PPT Version | PDF Version
  • Alessandro Pini
    A novel synthetic antimicrobial peptide for the cure of gram-negative infections: Mechanism of action, efficacy in vivo, toxicity, bio-distribution and resistance selection
    PPT Version | PDF Version
  • K Mulkijanyan
    Plant biopolymers from Boraginaceae family species and their synthetic derivatives: Prospective pharmacological agents
    PPT Version | PDF Version
  • Manoj Kumar Chhikara
    How promising is the development of a semi-synthetic meningococcal conjugate vaccine ?
    PDF Version
  • Jianbo Wang
    Transcriptome and small RNA gene expression changes in synthetic allohexaploids of
    PPT Version | PDF Version
  • Werner Lottermoser
    Application of a Difference Electron Nanoscope (DEN): Correlation between 3D Magnetical Structures of Synthetic Fayalite with Synchrotron and Neutron Diffraction and Mössbauer Spectroscopy
    PPT Version | PDF Version
  • Jianping Yu
    Photosynthetic Ethylene Production in a Cyanobacterium
    PDF Version
  • Murad H. Al-Salamat
    Design of small synthetic molecules that mimic IL-4 binding to IL-4Rα, which therefore promotes alternate macrophage differentiation (M2) with minimal effect on the endothelial and vascular IL-4Rα.
    PDF Version

Recommended Conferences

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version