DSpace university logo mark
Advanced Search
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > University Hospital > Articles in academic journal >

Azithromycin, clarithromycin and telithromycin inhibit MUC5AC induction by Chlamydophila pneumoniae in airway epithelial cells.


File Description SizeFormat
PPT_Yanagihara.pdf308.33 kBAdobe PDFView/Open

Title: Azithromycin, clarithromycin and telithromycin inhibit MUC5AC induction by Chlamydophila pneumoniae in airway epithelial cells.
Authors: Morinaga, Yoshitomo / Yanagihara, Katsunori / Miyashita, Naoyuki / Seki, Masafumi / Izumikawa, Koichi / Kakeya, Hiroshi / Yamamoto, Yoshihiro / Mukae, Hiroshi / Yamada, Yasuaki / Kohno, Shigeru / Kamihira, Shimeru
Issue Date: Dec-2009
Publisher: Elsevier Ltd.
Citation: Pulmonary pharmacology & therapeutics, 22(6), pp.580-586; 2009
Abstract: BACKGROUND: Airway mucus hypersecretion is an important problem in chronic respiratory diseases including bronchial asthma. Chlamydophila pneumoniae is recently confirmed to be a pathogen in bronchial asthma, but the relationship between C. pneumoniae and mucus hypersecretion is uncertain. In this study, we examined whether C. pneumoniae induces MUC5AC mucin in airway epithelial cells. We also examined the effects of macrolide and ketolide antibiotics on the C. pneumoniae-induced mucus production. METHODS: MUC5AC production in bronchial epithelial cells after stimulation with C. pneumoniae was analyzed by ELISA and quantitative RT-PCR. NF-kappaB and phosphorylated ERK were also analyzed. For inhibition study, cells were pretreated with azithromycin, clarithromycin and telithromycin before stimulation. RESULTS: C. pneumoniae dose-dependently induced MUC5AC production and gene expression. The ERK-NF-kappaB pathway was involved in C. pneumoniae-induced MUC5AC production. Macrolides and ketolides dose-dependently reduced C. pneumoniae-induced MUC5AC production. However, azithromycin was apparently less effective than the other antibiotics. Clarithromycin and telithromycin, but not azithromycin, reduced NF-kappaB activation. CONCLUSIONS: Clarithromycin and telithromycin were thought to interfere with the signal pathways between ERK and NF-kappaB. These results suggest that airway mucus hypersecretion is one of the mechanisms of C. pneumoniae-induced bronchial asthma, and that macrolide and ketolide antibiotics represent a novel therapeutic intervention in these patients.
Keywords: Macrolides / Ketolides / Asthma / Immunomodulatory effects / Mucins
URI: http://hdl.handle.net/10069/22298
ISSN: 10945539
DOI: 10.1016/j.pupt.2009.08.004
PubMed ID: 19716898
Rights: Copyright © 2009 Elsevier Ltd All rights reserved.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/22298

All items in NAOSITE are protected by copyright, with all rights reserved.

 

Valid XHTML 1.0! Copyright © 2006-2015 Nagasaki University Library - Feedback Powerd by DSpace