Published in:
Open Access
01-12-2014 | Research article
Altered mucosal immune response after acute lung injury in a murine model of Ataxia Telangiectasia
Authors:
Olaf Eickmeier, Su Youn Kim, Eva Herrmann, Constanze Döring, Ruth Duecker, Sandra Voss, Sibylle Wehner, Christoph Hölscher, Julia Pietzner, Stefan Zielen, Ralf Schubert
Published in:
BMC Pulmonary Medicine
|
Issue 1/2014
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Abstract
Background
Ataxia telangiectasia (A-T) is a rare but devastating and progressive disorder characterized by cerebellar dysfunction, lymphoreticular malignancies and recurrent sinopulmonary infections. In A-T, disease of the respiratory system causes significant morbidity and is a frequent cause of death.
Methods
We used a self-limited murine model of hydrochloric acid-induced acute lung injury (ALI) to determine the inflammatory answer due to mucosal injury in Atm (A-T mutated)- deficient mice (Atm
-/-).
Results
ATM deficiency increased peak lung inflammation as demonstrated by bronchoalveolar lavage fluid (BALF) neutrophils and lymphocytes and increased levels of BALF pro-inflammatory cytokines (e.g. IL-6, TNF). Furthermore, bronchial epithelial damage after ALI was increased in Atm
-/- mice. ATM deficiency increased airway resistance and tissue compliance before ALI was performed.
Conclusions
Together, these findings indicate that ATM plays a key role in inflammatory response after airway mucosal injury.