期刊
JOURNAL OF ASTHMA
卷 42, 期 5, 页码 305-314出版社
TAYLOR & FRANCIS LTD
DOI: 10.1081/JAS-200062950
关键词
bronchial responsiveness; exercise-induced asthma; exercise-induced narrowing; exercise-induced bronchoconstriction; fish oil; polyunsaturated fatty acids
Asthma prevalence continues to increase despite the progress that has been made in the treatment options for asthma. Alternative treatment therapies that reduce the dose requirements of pharmacological interventions would be beneficial, and could potentially reduce the public health burden of this disease. There is accumulating evidence that dietary modification has potential to influence the severity of asthma and reduce the prevalence and incidence of this condition. A possible contributing factor to the increased incidence of asthma in Western societies may the consumption of a pro-inflammatory diet. In the typical Western diet, 20 - 25-fold more omega (n)- 6 polyunsaturated fatty acids (PUFA) than n-3 PUFA are consumed, which results in the release of pro-inflammatory arachidonic acid metabolites. Eicosapentaenoic acid and docosahexaenoic acid are n-3 PUFA derived from fish oil that competitively inhibit n-6 PUFA arachidonic acid ( AA) metabolism and this reduce the generation of pro-inflammatory 4-series leukotrienes (LTs) and 2-series prostaglandins (PGs) and production of cytokines from inflammatory cells. These data are consistent with the proposed pathway by which dietary intake of n-3 PUFA modulates lung disease. This article will review the existing information concerning the relationship between n-3 PUFA supplementation and airway hyperresponsiveness in asthma. It includes studies assessing the efficacy of n-3 PUFA supplementation in exercise-induced bronchoconstriction. This review will also address the question as to whether supplementing the diet with n-3 PUFA represents a viable alternative treatment regimen for asthma.
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