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BMC Complementary Medicine and Therapies
Published in: BMC Complementary Medicine and Therapies 1/2012

Open Access 01-12-2012 | Research article

Gene expression profiling of flaxseed in mouse lung tissues-modulation of toxicologically relevant genes

Authors: Floyd Dukes, Stathis Kanterakis, James Lee, Ralph Pietrofesa, Emily S Andersen, Evguenia Arguiri, Sonia Tyagi, Louise Showe, Yassine Amrani, Melpo Christofidou-Solomidou

Published in: BMC Complementary Medicine and Therapies | Issue 1/2012

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Abstract

Background

Flaxseed (FS), a nutritional supplement consisting mainly of omega-3 fatty acids and lignan phenolics has potent anti-inflammatory, anti-fibrotic and antioxidant properties. The usefulness of flaxseed as an alternative and complimentary treatment option has been known since ancient times. We have shown that dietary FS supplementation ameliorates oxidative stress and inflammation in experimental models of acute and chronic lung injury in mice resulting from diverse toxicants. The development of lung tissue damage in response to direct or indirect oxidant stress is a complex process, associated with changes in expression levels of a number of genes. We therefore postulated that flaxseed might modulate gene expression of vital signaling pathways, thus interfering with the development of tissue injury.

Methods

We evaluated gene expression in lungs of flaxseed-fed (10%FS) mice under unchallenged, control conditions. We reasoned that array technology would provide a powerful tool for studying the mechanisms behind this response and aid the evaluation of dietary flaxseed intervention with a focus on toxicologically relevant molecular gene targets. Gene expression levels in lung tissues were analyzed using a large-scale array whereby 28,800 genes were evaluated.

Results

3,713 genes (12.8 %) were significantly (p < 0.05) differentially expressed, of which 2,088 had a >1.5-fold change. Genes affected by FS include those in protective pathways such as Phase I and Phase II.

Conclusions

The array studies have provided information on how FS modulates gene expression in lung and how they might be related to protective mechanisms. In addition, our study has confirmed that flaxseed is a nutritional supplement with potentially useful therapeutic applications in complementary and alternative (CAM) medicine especially in relation to treatment of lung disease.
Appendix
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Metadata
Title
Gene expression profiling of flaxseed in mouse lung tissues-modulation of toxicologically relevant genes
Authors
Floyd Dukes
Stathis Kanterakis
James Lee
Ralph Pietrofesa
Emily S Andersen
Evguenia Arguiri
Sonia Tyagi
Louise Showe
Yassine Amrani
Melpo Christofidou-Solomidou
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2012
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/1472-6882-12-47

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