Anti-oxidative and anti-neuroinflammatory effects of ethyl acetate extract fractions of Suaeda asparagoides MIq

作者：Lee Sung Gyu; Kim Jong Bo; Kang Hyun

来源：Tropical Journal of Pharmaceutical Research, 2016, 15(6): 1175-1181.

DOI：10.4314/tjpr.v15i6.9

• Suaeda asparagoides
• DPPH
• Anti-inflammatory activity
• Microglial cells
• iNOS
• TNF-alpha

Purpose: To evaluate the in vitro antioxidant and anti-neuroinflammatory effects of Suaeda asparagoides ethylacetate extract (SAE) in lipopolysaccharide (LPS)-stimulated BV-2 microglial cells.
Methods: The antioxidative activity of SAE was evaluated by measuring 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activity spectrometrometrically. Cell viability was evaluated by 3-(4, 5-dimethylthiazol- 2-yl)-2, 5- diphenyl-tetrazolium bromide (MTT) assay, while LPS-stimulated BV-2 microglia were used to study the expression and production of inflammatory mediators, including nitric oxide (NO), inducible NO synthase (iNOS) and tumor necrosis alpha (TNF-alpha).
Results: Pretreatment with SAE prior to LPS treatment significantly inhibited excessive production of NO (p < 0.001 at 20, 40, 80 and 100 mu g/mL) in a dose-dependent manner, and was associated with down-regulation of expression of inducible nitric oxide synthase (iNOS). SAE also suppressed the LPS-induced increase in TNF-alpha level (p < 0.01at concentrations of 40 and 80 mu g/mL) in BV-2 cells. Furthermore, DPPH-generated free radicals were inhibited by SAE in a concentration-dependent manner.
Conclusion: These results indicate that SAE possesses strong anti-oxidant properties, and inhibits excessive production of pro-inflammatory mediators, including NO, iNOS and TNF-alpha, in LPS-stimulated BV-2 cells

• 出版日期2016-6