The Korea Journal of Herbology (대한본초학회지)

The Korea Association of Herbology (대한본초학회)
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Anti-inflammatory activity of jakyakgamcho-tang on Lipopolysaccharide-Stimulated BV-2 Microglia Cells

LPS로 유도된 미세아교세포에서 작약감초탕의 항염증 효과

  • Mun, Yeun-Ja (Department of Anatomy, School of Korean Medicine, Wonkwang University)
  • 문연자 (원광대학교 한의과대학 해부학교실)
  • Received : 2022.09.14
  • Accepted : 2022.09.25
  • Published : 2022.09.30
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Abstract

Objectives : Jakyakgamcho-tang (JGT) has been traditionally used to treat muscular convulsion and pain in South Korea. According to recent studies, JGT has been reported to have anti-depression, anti-inflammation, anti-oxidative, anti-diabetics, anti-spasm and analgesic effects, but studies on its anti-neuroinflammatory and neuroprotective effect have not been deeply conducted. Thus, we investigated the anti-neuroinflammatory activity of JGT on lipopolysaccharide (LPS)-stimulated mouse microglia cells. Methods : To investigate the anti-neuroinflammatory effects of JGT on BV2 microglial cells, we examined the production of nitric oxide (NO) using griess assay, and mRNA expressions of pro-inflammatory cytokines such as interleukin (IL)-1𝛽, IL-6, and tumor necrosis factor (TNF)-𝛼 using real time RT-PCR. Furthermore, to determine the regulating mechanisms of JGT, we investigated the heme oxygenase (HO)-1 by real time RT-PCR. Results : Pre-treatment of JGT effectively decreased NO production in LPS-stimulated BV2 cells at concentrations without cytotoxicity. Additionally, JGT significantly suppressed the production of IL-1𝛽, IL-6, and TNF-𝛼 in LPS-stimulated BV2 cells. Furthermore, JGT activated the HO-1 expression, which is one of the immunomodulatory signaling molecules. And the abolishment of HO-1 by tin protoporphyrin IX (SnPP, the HO-1 inhibitor) reversed the anti- inflammatory activity of JGT in LPS-stimulated BV2 cells. Conclusions : Our results suggest that the JGT has anti-neuroinflammatory effect through the activation of HO-1 in LPS-stimulated BV2 cells. Thereby, JGT could expected to be used for the prevention and treatment of neurodegenerative disease related to neuroinflammation.

Keywords

Acknowledgement

본 연구는 2021년도 원광대학교 교비지원에 의해 수행되었습니다.

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