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Intranasal Curcumin Inhibits Pulmonary Fibrosis by Modulating Matrix Metalloproteinase-9 (MMP-9) in Ovalbumin-Induced Chronic Asthma

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Journal Inflammation
Date 2016 Nov 21
PMID 27866296
Citations 22
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Abstract

Pulmonary fibrosis is associated with irreversible, or partially reversible, airflow obstruction and ultimately unresponsiveness to asthma therapies such as corticosteroids. Intranasal curcumin, an anti-inflammatory molecule, has been found effective in allergic asthma. To study the effect of intranasal curcumin on airway remodeling and fibrosis in murine model of chronic asthma, BALB/c mice were sensitized to ovalbumin (OVA) and exposed to OVA aerosol (2%) from day 21 (after sensitization) for 5 weeks (twice/week). Curcumin (intranasal) was administered during the OVA aerosol challenge. Mice exposed to OVA developed inflammation dominated by eosinophils which lead to fibrosis and airway remodeling. Intranasal administration of curcumin significantly inhibited airway inflammation and pulmonary fibrosis, where MMP-9 activities were decreased along with α-smooth muscle actin (α-SMA), MMP-9, TIMP-1, and eotaxin expressions. These results suggest that intranasal curcumin regulates airway inflammation and remodeling in chronic asthma.

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