The University of Southampton
University of Southampton Institutional Repository

Asthmatic bronchial epithelium is more susceptible to oxidant-induced apoptosis

Bucchieri, Fabio, Puddicombe, Sarah M., Lordan, James L., Richter, Audrey, Buchanan, Diane, Wilson, Susan J., Ward, Jon, Zummo, Giovanni, Howarth, Peter H., Djukanovic, Ratko, Holgate, Stephen T. and Davies, Donna E. (2002) Asthmatic bronchial epithelium is more susceptible to oxidant-induced apoptosis American Journal of Respiratory Cell and Molecular Biology, 27, (2), pp. 179-185.

Record type: Article

Abstract

Abnormal apoptotic mechanisms are associated with disease pathogenesis. Because the asthmatic bronchial epithelium is characteristically damaged with loss of columnar epithelial cells, we postulated that this is due to unscheduled apoptosis. Using an antibody directed toward the caspase cleavage product of poly(ADP-ribose) polymerase, immunohistochemistry applied to endobronchial biopsies showed higher levels of staining in the bronchial epithelium of subjects with asthma as compared with normal control subjects (% epithelial staining [median (range) = 10.5 (1.4–24.5) versus 0.4 (0.0–9.7)]; P < 0.001). Because we were unable to determine whether this difference was due to ongoing inflammation in vivo, cultures of normal and asthmatic bronchial epithelial cells were used to study apoptosis in vitro. In complete growth medium, these cells showed no difference in their rate of proliferation or viability.
However, cells from subjects with asthma were more susceptible to the apoptotic effects of H2O2 than cells from normal control subjects (% apoptotic cells = 32.2 [8.8–54.9] versus 14.3 [6.4–24.7]; P < 0.05), even though both were similarly affected by treatment with actinomycin D. These data indicate that the susceptibility of asthmatic bronchial epithelium to oxidants is greater than normal. This susceptibility may contribute to the rising trends in asthma associated with air pollution and diets low in antioxidants.

Full text not available from this repository.

More information

Published date: 2002

Identifiers

Local EPrints ID: 26970
URI: http://eprints.soton.ac.uk/id/eprint/26970
ISSN: 1044-1549
PURE UUID: 57f20098-eb6a-4090-952a-58db635eea79
ORCID for Ratko Djukanovic: ORCID iD orcid.org/0000-0001-6039-5612

Catalogue record

Date deposited: 25 Apr 2006
Last modified: 17 Jul 2017 16:05

Export record

Contributors

Author: Fabio Bucchieri
Author: Sarah M. Puddicombe
Author: James L. Lordan
Author: Audrey Richter
Author: Diane Buchanan
Author: Susan J. Wilson
Author: Jon Ward
Author: Giovanni Zummo
Author: Donna E. Davies

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×