Effects of Zileuton on Airway Smooth Muscle Remodeling after Repeated Allergen Challenge in Brown Norway Rats

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Effects of zileuton on airway smooth muscle remodeling after repeated allergen challenge in brown Norway rats.

BACKGROUND Chronic asthma is characterized by airway inflammation and remodeling. OBJECTIVE This study aimed to evaluate the effects of zileuton on bronchial hyperresponsiveness, airway inflammation and airway smooth muscle (ASM) remodeling. METHODS Two experimental groups of brown Norway rats sensitized and repeatedly challenged with aerosolized ovalbumin (OA) were given oral zileuton (OA-...

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Airway remodeling in allergen-challenged Brown Norway rats: distribution of proteoglycans.

Proteoglycans (PG) have important effects on the mechanical properties of tissues and the phenotype of various structural cells. Little is known about changes in PG deposition in the airways in animal models of asthma. We studied changes in PG in the airway wall of Brown Norway rats sensitized to ovalbumin (OA) and exposed to repeated OA challenge. Control (Sal) animals were sensitized and chal...

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Repeated allergen exposure of sensitized Brown-Norway rats induces airway cell DNA synthesis and remodelling.

Chronic inflammation in asthmatic airways can lead to characteristic airway smooth muscle (ASM) thickening and pathological changes within the airway wall. This study assessed the effect of repeated allergen exposure on ASM and epithelial cell deoxyribonucleic acid (DNA) synthesis, cell recruitment and airway wall pathology. Brown-Norway rats were sensitized and then exposed to ovalbumin or sal...

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The effects of repeated allergen challenge on airway smooth muscle structural and molecular remodeling in a rat model of allergic asthma.

The effects of remodeling of airway smooth muscle (SM) by hyperplasia on airway SM contractility in vivo are poorly explored. The aim of this study was to investigate the relationship between allergen-induced airway SM hyperplasia and its contractile phenotype. Brown Norway rats were sensitized with ovalbumin (OVA) or saline on day 0 and then either OVA-challenged once on day 14 and killed 24 h...

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Pirfenidone modulates airway responsiveness, inflammation, and remodeling after repeated challenge.

We investigated the therapeutic potential of a newly developed antifibrotic agent, pirfenidone, to regulate airway remodeling and the development of allergic airway inflammation and airway hyperresponsiveness after chronic allergen challenge. Administration of pirfenidone after sensitization but during the period of ovalbumin challenge significantly prevented the development of airway hyperresp...

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ژورنال

عنوان ژورنال: Respiration

سال: 2013

ISSN: 0025-7931,1423-0356

DOI: 10.1159/000353427