کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4211615 1280647 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Omega-3 polyunsaturated fatty acids and bronchial inflammation in grass pollen allergy after allergen challenge
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی پزشکی ریوی و تنفسی
پیش نمایش صفحه اول مقاله
Omega-3 polyunsaturated fatty acids and bronchial inflammation in grass pollen allergy after allergen challenge
چکیده انگلیسی

SummaryRatioAsthma is a major public health problem, with bronchial inflammation as the therapeutic target. The role of dietary fish oil derived polyunsaturated fatty acids (PUFAs) in allergic inflammation is controversial. Most asthmatics suffer from mild disease and non-pharmacologic interventions are attractive. This study investigates the anti-inflammatory potential of nutritional PUFAs in an experimentally induced bronchial inflammation.MethodsWe examined 38 grass pollen allergic asthmatics and 19 controls. History of dietary PUFA intake was compared with levels of PUFAs in erythrocyte membranes, and stratified according to low (25th quartile; Q25) and high (75th quartile; Q75) ratios of omega-3 (n-3) to omega-6 (n-6) PUFAs as a surrogate for anti-inflammatory (Q75) or proinflammatory (Q25) effects. Bronchial inflammation was simulated with one-step inhalation of grass pollen. Bronchial response (exhaled nitric monoxide, eNO as surrogate for inflammation, decrease of FEV1) was correlated with levels of PUFAs in erythrocyte membranes.ResultsRatios of n-3/n-6 PUFA were significantly lower in asthmatics than in healthy controls. Levels of eNO were significantly higher in Q25 asthmatics than in Q75 asthmatics (p = 0.040). There was a trend of higher bronchial hyperreactivity in Q25 asthmatics (median PD20 0.27 vs. 0.14; n.s.), induced by specific bronchial challenge with grass pollen (FEV1 decrease 16.7 vs. 23.1%; n.s.).ConclusionWhen stratifying for erythrocyte membrane PUFA content as a surrogate for alimentary intake, we found mild effects on bronchial allergic inflammation. Future intervention studies with pharmacological PUFA doses appear suitable to clarify dietary PUFA role as an adjunctive intervention to the established treatment of asthma.ClinicalTrials.gov No. NCT00519740.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Medicine - Volume 104, Issue 12, December 2010, Pages 1793–1798
نویسندگان
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