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The Anti-inflammatory Mechanism of Blueberry is through Suppression of NF-kB/Caspase-1 Activation in LPS-induced RAW264.7 Cells

  • Mi-Ok Yang (Wonkwang Institute of Nature Healthcare Studies) ;
  • Noh-Yil Myung (Department of Korean Medicine and Food Therapy, Wonkwang Digital University)
  • Received : 2024.04.22
  • Accepted : 2024.05.16
  • Published : 2024.06.01

Abstract

Blueberry (BB), fruit of Vacciniumi, has been hailed as an antioxidant superfood. BB is a rich source of vitamins, minerals, flavonoids, phenolic acids and known to have a variety of pharmacological actions. The purpose of this work is to clarify the anti-inflammatory mechanism of BB in lipopolysaccharide (LPS)-activated RAW264.7 macrophage. We explored the effects of BB on the production of inflammatory cytokines, prostaglandin E2 (PGE2) and expression of cyclooxygenase (COX)-2 in LPS-activated RAW264.7 macrophage. Moreover, to investigate the molecular mechanisms by BB, we evaluated whether BB modulate nuclear factor-kappa B (NF)-kB pathway and caspase- 1 activation. The findings of this work demonstrated that BB alleviated the LPS-enhanced inflammatory cytokines and PGE2, as well as COX-2 levels. Additionally, we demonstrated that the anti-inflammatory mechanism of BB occurs due to the attenuation of IκB-α degradation, NF-kB translocation and caspase-1 activation. Conclusively, these findings provide evidence that BB may be useful agents in the treatment of inflammation.

Keywords

Acknowledgement

This study was supported by Wonkwang Digital University in 2024.

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