Luteolin exerted less inhibitory effect on macrophage activation induced by Astragalus polysaccharide than by lipopolysaccharide

Autor: Zhi-Peng Li, Quan-Wei Zhang, Wei Wei, Li-Feng Li, Dik-Lung Ma, Chung-Hang Leung, Ai-Ping Lu, Zhao-Xiang Bian, Quan-Bin Han
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Journal of Functional Foods, Vol 37, Iss , Pp 618-623 (2017)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2017.08.023
Popis: As a kind of food supplementary, polysaccharide-rich tonic herbs become more and more popular. However, little is known regarding the interaction between known active molecules with these polysaccharides. This study aims to investigate effects of luteolin on RAW264.7 cells induced by Astragalus polysaccharide RAP in comparison with lipopolysaccharide (LPS). The results showed that luteolin suppressed inflammatory meditors in LPS-induced RAW264.7 cells. While in the RAP-induced RAW264.7 cells, luteolin only decreased the NO production and iNOS gene expression, but only inhibit IL-6 at high concentration, and was ineffective in term of TNF-α. The results of western blot analysis suggested that luteolin only inhibited the phosphorylation of NF-κB p65 and Akt, but not MAPKs and IRF3 in RAP-induced RAW264.7 cells. Taken together, lutelion exerted less inhibitory effect on macrophage induced by RAP than by LPS. This study demonstrated the luteolin-containing foods may not strongly interfere the immunoregulation effect of polysaccharide RAP.
Databáze: Directory of Open Access Journals