alexa Inhibition by red wine extract, resveratrol, of cytokine release by alveolar macrophages in COPD.
Veterinary Sciences

Veterinary Sciences

Journal of Veterinary Science & Technology

Author(s): Culpitt SV, Rogers DF, Fenwick PS, Shah P, De Matos C,

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Abstract BACKGROUND: The pathophysiology of chronic obstructive pulmonary disease (COPD) features pulmonary inflammation with a predominant alveolar macrophage involvement. Bronchoalveolar macrophages from patients with COPD release increased amounts of inflammatory cytokines in vitro, an effect that is not inhibited by the glucocorticosteroid dexamethasone. Resveratrol (3,5,4'-trihydroxystilbene) is a component of red wine extract that has anti-inflammatory and antioxidant properties. A study was undertaken to determine whether or not resveratrol would inhibit cytokine release in vitro by alveolar macrophages from patients with COPD. METHODS: Alveolar macrophages were isolated from bronchoalveolar lavage (BAL) fluid from cigarette smokers and from patients with COPD (n=15 per group). The macrophages were stimulated with either interleukin (IL)-1beta or cigarette smoke media (CSM) to release IL-8 and granulocyte macrophage-colony stimulating factor (GM-CSF). The effect of resveratrol was examined on both basal and stimulated cytokine release. RESULTS: Resveratrol inhibited basal release of IL-8 in smokers and patients with COPD by 94\% and 88\% respectively, and inhibited GM-CSF release by 79\% and 76\% respectively. Resveratrol also inhibited stimulated cytokine release. Resveratrol reduced IL-1beta stimulated IL-8 and GM-CSF release in both smokers and COPD patients to below basal levels. In addition, resveratrol inhibited CSM stimulated IL-8 release by 61\% and 51\% respectively in smokers and COPD patients, and inhibited GM-CSF release by 49\% for both subject groups. CONCLUSIONS: Resveratrol inhibits inflammatory cytokine release from alveolar macrophages in COPD. Resveratrol or similar compounds may be effective pharmacotherapy for macrophage pathophysiology in COPD.
This article was published in Thorax and referenced in Journal of Veterinary Science & Technology

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