Inflammation and Oxidative Stress in an Obese State and the Protective Effects of Gallic Acid
- PMID: 30577684
- PMCID: PMC6356415
- DOI: 10.3390/nu11010023
Inflammation and Oxidative Stress in an Obese State and the Protective Effects of Gallic Acid
Abstract
Metabolic complications in an obese state can be aggravated by an abnormal inflammatory response and enhanced production of reactive oxygen species. Pro-inflammatory response is known to be associated with the formation of toxic reactive oxygen species and subsequent generation of oxidative stress. Indeed, adipocytes from obese individuals display an altered adipokine profile, with upregulated expression and secretion of pro-inflammatory cytokines such as tumor necrosis factor alpha (TNF-α) and interleukin (IL-6). Interestingly, natural compounds, including phenolic enriched foods are increasingly explored for their ameliorative effects against various metabolic diseases. Of interest is gallic acid, a trihydroxybenzoic acid that has progressively demonstrated robust anti-obesity capabilities in various experimental models. In addition to reducing excessive lipid storage in obese subjects, gallic acid has been shown to specifically target the adipose tissue to suppress lipogenesis, improve insulin signaling, and concomitantly combat raised pro-inflammatory response and oxidative stress. This review will revise mechanisms involved in the pathophysiological effects of inflammation and oxidative stress in an obese state. To better inform on its therapeutic potential and improvement of human health, available evidence reporting on the anti-obesity properties of gallic acid and its derivatives will be discussed, with emphases on its modulatory effect on molecular mechanisms involved in insulin signaling, inflammation and oxidative stress.
Keywords: gallic acid; inflammation; insulin resistance; obesity; oxidative stress; therapeutic target.
Conflict of interest statement
The authors declare no conflict of interest. The funders had no role in the design of the study; in the writing of the manuscript, or in the decision to publish the results.
Figures
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References
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- World Health Organization Obesity. [(accessed on 9 August 2018)]; Available online: http://www.who.int/en/news-room/fact- sheets/detail/obesity-and-overweight.
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