Journal
JOURNAL OF FUNCTIONAL FOODS
Volume 21, Issue -, Pages 359-371Publisher
ELSEVIER
DOI: 10.1016/j.jff.2015.12.015
Keywords
Dendrobium officinale polysaccharides; Chronic obstructive pulmonary disease; Mucin-5AC; Aquaporin-5; Diet therapy
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Funding
- Seed Funding Programme for Basic Research from University of Hong Kong [201111159043]
- Innovation and Technology Support Programme, the Government of the Hong Kong Administrative Region [ITS/313/11]
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Dendrobium officinale has been used in China for several thousand years as a health food and a source of nutrients. In this study, the therapeutic effects of D. officinale polysaccharides (DOP) on chronic obstructive pulmonary disease (COPD) were investigated. Western blot and qPCR techniques were firstly used to determine the effects of DOP on mucin-5AC and aquaporin-5 expression in both in vitro and in vivo COPD models. Thereafter, forty COPD patients were enrolled and randomly assigned to receive placebo or DOP. Spirometry test, ELISA, and immunohistochemistry were employed to measure the lung function, serum and bronchoalveolar lavage fluid pro-inflammatory mediator levels, and mucin-5AC and aquaporin-5 expression in the airway submucosal glands. The results showed DOP could ameliorate the lung functions and inflammation while remarkably decreasing mucin-5AC and increasing aquaporin-5 expression in both COPD models and patients. Our data suggest that DOP could be a promising diet therapy for COPD treatment. (C) 2015 Elsevier Ltd. All rights reserved.
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