1. Attenuation of lipopolysaccharide-induced neuroinflammatory events in BV-2 microglial cells by Moringa oleifera leaf extract
Gothai SIVAPRAKASAM ; Katyakyini MUNIANDY ; Palanisamy ARULSELVAN ; Palanivel GANESAN ; Shin-Young PARK ; Duk-Yeon CHO ; Joon-So KIM ; Palanivel GANESAN ; Dong-Kug CHOI ; Palanisamy ARULSELVAN ; Palanisamy ARULSELVAN ; Dong-Kug CHOI
Asian Pacific Journal of Tropical Biomedicine 2019;9(3):109-115
Objective: To determine the anti-neuroinflammatory activity of Moringa oleifera leaf extract (MLE) under lipopolysaccharide stimulation of mouse murine microglia BV2 cells in vitro. Methods: The cytotoxicity effect of MLE was investigated by 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl-tetrazolium bromide assay. The inflammatory response of BV-2 cells were induced with lipopolysaccharide. The generation of nitric oxide levels was determined by using Griess assay and the level of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) was evaluated by ELISA kit. The expression of iNOS, COX-2 as well as IκB-α was carried out by immunoblot analysis. Results: MLE reduced the nitric oxide production in concentration-dependent manner, and maintained the viability of BV-2 microglial cells which indicated absence of toxicity. In addition, MLE repressed the activation of nuclear factor kappa B by arresting the deterioration of IκB-α, consequently resulted in suppression of cytokines expression such as COX-2 and iNOS. Conclusions: MLE inhibitory activities are associated with the inhibition of nuclear factor kappa B transcriptional activity in BV2 microglial cells. Thus MLE may offer a substantial treatment for neuroinflammatory diseases.
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