کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10738084 | 1046682 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vitamin E prevents NRF2 suppression by allergens in asthmatic alveolar macrophages in vivo
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کلمات کلیدی
PBSPC20forced expiratory volume in 1sCDDOBALFVCGAPDHNrf2IgEFEV1DMSO - DMSOHCG - اچ سی جیImmunoglobulin E - ایمونوگلوبولین EDimethyl sulfoxide - دیمتیل سولفواکسیدnuclear factor (erythroid-derived 2)-like 2 - فاکتور هسته ای (erythroid-derived 2) -like 2bronchoalveolar lavage - لارو برونکلو آلوئولارPhosphate-buffered saline - محلول نمک فسفات با خاصیت بافریhigh-pressure liquid chromatography - کروماتوگرافی مایع با فشار بالاHPLC - کروماتوگرافی مایعی کاراglyceraldehyde-3-phosphate dehydrogenase - گلیسرالیدید-3-فسفات دهیدروژنازhuman chorionic gonadotropin - گونادوتروپین کوریونی انسان
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
سالمندی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Asthma is a chronic inflammatory airway disease associated with increased generation of reactive oxidant species and disturbed antioxidant defenses. NRF2 is the master transcription factor that regulates the expression of Phase II antioxidant and detoxifying enzymes. Disruption of NRF2 augments oxidative stress and inflammation in a mouse model of asthma, suggesting a protective role for NRF2 in the lungs in vivo. Yet, little is known about the regulation and function of NRF2 in human asthmatics. Using segmental allergen challenge, a well-established experimental model of IgE-mediated asthma exacerbation in human atopic asthmatics, we investigated the effects of a specific allergen and the modulatory role of vitamin E on NRF2 and a NRF2-target gene, superoxide dismutase, in alveolar macrophages recovered from the airways at 24Â h after allergen instillation in vivo. Allergen-provoked airway inflammation in sensitive asthmatics caused a profound inhibition of macrophage NRF2 activity and superoxide dismutase, rendering them incapable of responding to the NRF2 inducers. Prolonged treatment with high doses of the antioxidant vitamin E lessened this allergen-induced drop in alveolar macrophage NRF2. These results are the first to demonstrate that NRF2 expression in human asthmatics is compromised upon allergen challenge but can be rescued by vitamin E in vivo.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Free Radical Biology and Medicine - Volume 51, Issue 2, 15 July 2011, Pages 516-521
Journal: Free Radical Biology and Medicine - Volume 51, Issue 2, 15 July 2011, Pages 516-521
نویسندگان
Ryszard Dworski, Wei Han, Timothy S. Blackwell, Aimee Hoskins, Michael L. Freeman,