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http://dx.doi.org/10.6116/kjh.2022.37.5.83.

Anti-inflammatory activity of jakyakgamcho-tang on Lipopolysaccharide-Stimulated BV-2 Microglia Cells  

Mun, Yeun-Ja (Department of Anatomy, School of Korean Medicine, Wonkwang University)
Publication Information
The Korea Journal of Herbology / v.37, no.5, 2022 , pp. 83-88 More about this Journal
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
jakyakgamcho-tang; microglia; neuro-inflammation; lipopolysaccharide; neurodegenerative disease;
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