Fruits extracts of Hovenia dulcis Thunb. suppresses lipopolysaccharide-stimulated inflammatory responses through nuclear factor-kappaB pathway in Raw 264.7 cells
Asian Pacific Journal of Tropical Medicine
;
(12): 357-365, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-820260
ABSTRACT
OBJECTIVE@#To investigate the anti-inflammatory effects and the action mechanism of the fruits of Hovenia dulcis (H. dulcis) in lipopolysaccharide (LPS)-induced mouse macrophage Raw 264.7 cells.@*METHODS@#The extract of H. dulcis fruits (EHDF) were extracted with 70% ethanol. Mouse macrophages were treated with different concentrations of EHDF in the presence and absence of LPS (1 μg/mL). To demonstrate the inflammatory mediators including nitric oxide, inducible nitric oxide synthase and cyclooxygenase (COX)-2 expression levels were analyzed by using in vitro assay systems. COX-derived pro-inflammatory cytokines including interleukin-1β, tumor necrosis factor-α and prostaglandin E2 were determined using ELISA kits. Cell viability, heme oxygenase-1 expression, nuclear factor-kappaB and nuclear factor E2-related factors 2 translocation were also investigated.@*RESULTS@#EHDF potently inhibited the LPS-stimulated nitric oxide, inducible nitric oxide synthase, COX-2, interleukin-1β and tumor necrosis factor-α expression in a dose-dependent manner. EHDF suppressed the phosphorylation of inhibited kappaB-alpha and p65 nuclear translocation. Treatment of macrophage cells with EHDF alone induced the heme oxygenase-1 and nuclear translocation of nuclear factor E2-related factor 2.@*CONCLUSIONS@#These results suggest that the ethanol extract of H. dulcis fruit exerts its anti-inflammatory effects by inhibiting inhibited kappaB-alpha phorylation and nuclear translocation of nuclear factor-kappaB.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Inglês
Revista:
Asian Pacific Journal of Tropical Medicine
Ano de publicação:
2016
Tipo de documento:
Artigo
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