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Accession IconGSE50836

Mepenzolate bromide displays beneficial effects in a mouse model of chronic obstructive pulmonary disease

Organism Icon Mus musculus
Sample Icon 8 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Gene 1.0 ST Array (mogene10st)

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For the clinical treatment of chronic obstructive pulmonary disease (COPD), it is important not only to improve the airflow limitation by bronchodilation but also to suppress emphysema by controlling inflammation. In this study, we have screened for compounds that prevent elastase-induced airspace enlargement in mice from medicines already used clinically. Mepenzolate bromide, a muscarinic antagonist used to treat gastrointestinal disorders was selected. Intratracheal administration or inhalation of mepenzolate bromide decreased the severity of elastase-induced airspace enlargement, alteration of lung mechanics and respiratory dysfunction. While mepenzolate bromide showed bronchodilatory activity, most of other muscarinic antagonists tested did not improve the elastase-induced pulmonary disorders. Mepenzolate bromide suppressed elastase-induced pulmonary inflammatory responses and production of superoxide anions, and reduced the level of cigarette smoke-induced airspace enlargement and alteration of lung mechanics. Based on these results, we propose that this drug is therapeutically effective for COPD as a consequence of both its anti-inflammatory and bronchodilatory activities.
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