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Review
. 2013 Aug 1;188(3):279-84.
doi: 10.1164/rccm.201303-0503ED.

Two faces of vitamin E in the lung

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Review

Two faces of vitamin E in the lung

Joan M Cook-Mills et al. Am J Respir Crit Care Med. .

Abstract

Asthma and allergic lung disease occur as complex environmental and genetic interactions. Clinical studies of asthma indicate a number of protective dietary factors, such as vitamin E, on asthma risk. However, these studies have had seemingly conflicting outcomes. In this perspective, we discuss opposing regulatory effects of tocopherol isoforms of vitamin E, mechanisms for tocopherol isoform regulation of allergic lung inflammation, association of vitamin E isoforms with outcomes in clinical studies, and how the variation in global prevalence of asthma may be explained, at least in part, by vitamin E isoforms.

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Figures

<i>Figure 1.</i>
Figure 1.
α-Tocopherol and γ-tocopherol. (A) α-Tocopherol differs from γ-tocopherol by one methyl group (arrow). (B) Plasma γ-tocopherol (γ-T) and plasma α-tocopherol (α-T) in one to two reports per country and publication dates are indicated (, –83). Global asthma prevalence in 2004 (84) and 2012 (85). (C) Tocopherols were extracted from dietary oils (sunflower oil from Spectrum Organic Products, LLC; safflower oil from Spectrum; olive oil from Colavita; soybean oil from Crisco; corn oil from Mazola; grapeseed oil from Kusha, Inc; sesame oil from Lavita; peanut oil from Essentials by Supervalu; canola oil from Crisco; Sacha Inchi from Olivar). Extracted tocopherols were measured by HPLC with an electrochemical detector as previously described (8). ND = not determined.

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