Open Access

Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑inflammatory and antioxidative heme oxygenase‑1 in human endothelial cells

  • Authors:
    • Sun‑Oh Jeong
    • Yong Son
    • Ju Hwan Lee
    • Yong‑Kwan Cheong
    • Seong Hoon Park
    • Hun‑Taeg Chung
    • Hyun‑Ock Pae
  • View Affiliations

  • Published online on: March 26, 2015     https://doi.org/10.3892/mmr.2015.3553
  • Pages: 937-944
  • Copyright: © Jeong et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Growing evidence suggests that the elevation of free fatty acids, including palmitic acid (PA), are associated with inflammation and oxidative stress, which may be involved in endothelial dysfunction, characterized by the reduced bioavailability of nitric oxide (NO) synthesized from endothelial NO synthase (eNOS). Heme oxygenase‑1 (HO‑1) is important in the preservation of NO bioavailability. Piceatannol (Pic), with similar chemical structure to resveratrol, is suggested to possess similar protective effects as resveratrol. In the present study, human umbilical vein endothelial cells (HUVECs), stimulated with PA, were used to examine the endothelial protective effects of Pic. Pic increased the expression of HO‑1 via nuclear factor erythroid‑2‑related factor‑2 activation in the HUVECs, and decreased the PA‑induced secretions of interleukin‑6 and tumor necrosis factor‑α, and the formation of reactive oxygen species ROS via inhibition of NF‑κB activation. Notably, following inhibition of HO‑1 activity by tin protoporphryin‑IX, Pic did not prevent cytokine secretion, ROS formation, and NF‑κB activation in the PA‑stimulated HUVECs. PA attenuated insulin‑mediated insulin receptor substrate‑1 (IRS‑1) tyrosine phosphorylation, leading to decreased glucose uptake, and phosphorylation of eNOS, leading to a reduction in the production of NO. Pic effectively mitigated the inhibitory effects of PA on the insulin‑mediated phosphorylation of IRS‑1 and eNOS, which was not observed following inhibition of HO‑1 activity. The results of the present study suggested that Pic may have the potential to prevent PA‑induced impairment of insulin signaling and eNOS function, by inducing the expression of the anti‑inflammatory and antioxidant, HO‑1.
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July-2015
Volume 12 Issue 1

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Jeong SO, Son Y, Lee JH, Cheong YK, Park SH, Chung HT and Pae HO: Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑inflammatory and antioxidative heme oxygenase‑1 in human endothelial cells. Mol Med Rep 12: 937-944, 2015
APA
Jeong, S., Son, Y., Lee, J.H., Cheong, Y., Park, S.H., Chung, H., & Pae, H. (2015). Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑inflammatory and antioxidative heme oxygenase‑1 in human endothelial cells. Molecular Medicine Reports, 12, 937-944. https://doi.org/10.3892/mmr.2015.3553
MLA
Jeong, S., Son, Y., Lee, J. H., Cheong, Y., Park, S. H., Chung, H., Pae, H."Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑inflammatory and antioxidative heme oxygenase‑1 in human endothelial cells". Molecular Medicine Reports 12.1 (2015): 937-944.
Chicago
Jeong, S., Son, Y., Lee, J. H., Cheong, Y., Park, S. H., Chung, H., Pae, H."Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑inflammatory and antioxidative heme oxygenase‑1 in human endothelial cells". Molecular Medicine Reports 12, no. 1 (2015): 937-944. https://doi.org/10.3892/mmr.2015.3553