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Article
HO-1 Upregulation Attenuates Adipocyte Dysfunction, Obesity, and Isoprostane Levels in Mice Fed High Fructose Diets
Pharmaceutical Science and Research
  • Zeid Khitan, Marshall University
  • Mohit Harsh
  • Komal Sodhi
  • Joseph I. Shapiro, MD, Marshall University
  • Nader G. Abraham, Marshall University
Document Type
Article
Publication Date
9-9-2014
Abstract

Background. Fructose metabolism is an unregulated metabolic pathway and excessive fructose consumption is known to activate ROS.HO-1 is a potent antioxidant gene that plays a key role in decreasing ROS and isoprostanes.We examinedwhether the fructosemediated increase in adipocyte dysfunction involves an increase in isoprostanes and that pharmacological induction ofHO-1would decrease both isoprostane levels and adipogenesis. Methods and Results. We examined the effect of fructose, on adipogenesis in human MSCs in the presence and absence of CoPP, an inducer of HO-1. Fructose increased adipogenesis and the number of large lipid droplets while decreasing the number of small lipid droplets (๐‘ƒ < 0.05). Levels of heme and isoprostane in fructose treated MSC-derived adipocytes were increased. CoPP reversed these effects andmarkedly increasedHO-1 and theWnt signaling pathway. Thehigh fructose diet increased heme levels in adipose tissue and increased circulating isoprostane levels (๐‘ƒ < 0.05 versus control). Fructose diets decreasedHO-1 and adiponectin levels in adipose tissue. Induction ofHO-1 by CoPP decreased isoprostane synthesis (๐‘ƒ < 0.05 versus fructose). Conclusion. Fructose treatment resulted in increased isoprostane production and adipocyte dysfunction, which was reversed by the increased expression of HO-1.

Comments

The version of record is available from the publisher at http://dx.doi.org/10.1155/2014/980547. Copyright ยฉ 2014 Zeid Khitan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Citation Information
Khitan Z, M Harsh, K Sodhi, JI Shapiro and NG Abraham. 2014. HO-1 upregulation attenuates adipocyte dysfunction, obesity, and isoprostane levels in mice fed high fructose diets. J. Nutr. Metab. Vol. 2014:1-13. PMID:25295182.