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Investigation of Antimicrobial and Anti-inflammatory Activities of the Hyeonggaeyeongyotang Gagambang

형개련교탕(荊芥連翹湯) 가감방(加減方)의 항균 및 항염증 효능

  • Gang, Seong Gu (Department of Biochemistry, Chungnam National University) ;
  • Cho, Nam Joon (Department of Biochemistry, Chungnam National University) ;
  • Kim, Ji Young (Department of Biochemistry, Chungnam National University) ;
  • Han, Hyo Sang (Department of Health Administration, Joongbu University) ;
  • Kim, Kee Kwang (Department of Biochemistry, Chungnam National University)
  • Received : 2018.04.21
  • Accepted : 2018.07.25
  • Published : 2018.07.30

Abstract

Objectives : Hyeonggaeyeongyotang Gagambang (HYT) is a herbal medicine prescribed for the treatment of inflammatory diseases, but it is necessary to study the exact therapeutic efficacy. This study aims to investigate the antibacterial and anti-inflmmatory activities of HYT. Methods : Antibacterial activity of HYT was confirmed by staining Escherichia coli, a gram negative strain, and Staphylococcus aureus, a gram positive strain, on solid Lysogeny Broth (LB) medium containing HYT. Antioxidant activity of HYT was confirmed by 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) assay. The phosphorylation of nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha ($I{\kappa}B{\alpha}$) after lipopolysaccharide (LPS) treatment with HYT-treated RAW 264.7 mouse macrophages cells was confirmed by immunoblot analysis and the level of interleukin 1 beta (IL-$1{\beta}$) mRNA expression level was confirmed by quantitative real-time PCR. Results : HYT showed a concentration-dependent antibacterial activity against Escherichia coli and Staphylococcus aureus and also showed excellent antioxidant activity. HYT treatment attenuated the phosphorylation of $I{\kappa}B{\alpha}$induced by LPS treatment in RAW 264.7 mouse macrophages cells. The phosphorylation of $I{\kappa}B{\alpha}$is crucial for the regulation of the expression of various pro-inflammatory cytokines. In addition, IL-$1{\beta}$ mRNA expression level of RAW 264.7 mouse macrophages cells stimulated by LPS treatment was also inhibited by HYT treatment. Conclusions : Through experimental demonstration of the antioxidative, antimicrobial and anti-inflammatory effects of HYT, we demonstrated that HYT is a herbal medicine effective for the treatment of inflammatory diseases caused by various bacterial infections.

Keywords

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