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- W2116179634 abstract "Dietary flaxseed (FS) is a nutritional whole grain with high contents of omega-3 fatty acids and lignans with anti-inflammatory and antioxidant properties. We evaluated FS in a murine model of pulmonary ischemia-reperfusion injury (IRI) by dietary supplementation of 0% (control) or 10% (treatment) FS before IRI. Mice fed 0% FS undergoing IRI had a significant decrease in arterial oxygenation (Pa(O(2))) and a significant increase in bronchoalveolar lavage (BAL) protein compared with sham-operated mice. However, mice fed 10% FS undergoing IRI had a significant improvement in both Pa(O(2)) and BAL protein compared with mice fed 0% FS undergoing IRI. In addition, oxidative lung damage was decreased in 10% FS-supplemented mice undergoing IRI, as assessed by malondialdehyde levels. Immunohistochemical staining of lungs for iPF(2alpha)-III F(2) isoprostane, a measure of lipid oxidation, was diminished. FS-supplemented mice had less reactive oxygen species (ROS) release from the vascular endothelium in lungs in an ex vivo model of IRI, and alveolar macrophages isolated from FS-fed mice had significantly reduced ROS generation in response to oxidative burst. Pulmonary microvascular endothelial cells produced less ROS in a flow cessation model of ischemia when preincubated with purified FS lignan metabolites. Pharmacological inhibition of heme oxygenase-1 (HO-1) resulted in only a partial reduction of FS protection in the same model. We conclude that dietary FS is protective against IRI in an experimental murine model and that FS affects ROS generation and ROS detoxification via pathways not limited to upregulation of antioxidant enzymes such as HO-1." @default.
- W2116179634 created "2016-06-24" @default.
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- W2116179634 date "2008-02-01" @default.
- W2116179634 modified "2023-09-25" @default.
- W2116179634 title "Dietary flaxseed enhances antioxidant defenses and is protective in a mouse model of lung ischemia-reperfusion injury" @default.
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- W2116179634 doi "https://doi.org/10.1152/ajplung.00138.2007" @default.
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