Resveratrol suppresses PAI-1 gene expression in a human in vitro model of inflamed adipose tissue

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Abstract

Increased plasminogen activator inhibitor-1 (PAI-1) levels are associated with a number of pathophysiological complications; among them is obesity. Resveratrol was proposed to improve obesity-related health problems, but the effect of resveratrol on PAI-1 gene expression in obesity is not completely understood. In this study, we used SGBS adipocytes and a model of human adipose tissue inflammation to examine the effects of resveratrol on the production of PAI-1. Treatment of SGBS adipocytes with resveratrol reduced PAI-1 mRNA and protein in a time- and concentration-dependent manner. Further experiments showed that obesity-associated inflammatory conditions lead to the upregulation of PAI-1 gene expression which was antagonized by resveratrol. Although signaling via PI3K, Sirt1, AMPK, ROS, and Nrf2 appeared to play a significant role in the modulation of PAI-1 gene expression under noninflammatory conditions, those signaling components were not involved in mediating the resveratrol effects on PAI-1 production under inflammatory conditions. Instead, we demonstrate that the resveratrol effects on PAI-1 induction under inflammatory conditions were mediated via inhibition of the NFB pathway. Together, resveratrol can act as NFB inhibitor in adipocytes and thus the subsequently reduced PAI-1 expression in inflamed adipose tissue might provide a new insight towards novel treatment options of obesity. © 2013 Ivana Zagotta et al.

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CITATION STYLE

APA

Zagotta, I., Dimova, E. Y., Funcke, J. B., Wabitsch, M., Kietzmann, T., & Fischer-Posovszky, P. (2013). Resveratrol suppresses PAI-1 gene expression in a human in vitro model of inflamed adipose tissue. Oxidative Medicine and Cellular Longevity. https://doi.org/10.1155/2013/793525

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