摘要
目的观察牛膝多糖(achyranthes bidentata polysaccha-rides,ABPS)对肥大细胞活化脱颗粒的影响。方法运用大鼠被动皮肤过敏反应(PCA)实验,用比色测定法检测ABPS在体内对肥大细胞(MC)影响;体外实验将ABPS分为高、中、低3个剂量组,然后分别将其加入抗原致敏的RBL-2H3细胞中(大鼠嗜碱性粒细胞白血病细胞,国际公认的MC研究模型细胞),观察ABPS对RBL-2H3细胞脱颗粒的影响。结果ABPS能明显抑制大鼠PCA、RBL-2H3细胞脱颗粒,并能抑制RBL-2H3细胞释放组胺、肿瘤坏死因子α及白细胞介素4;抑制RBL-2H3细胞中Akt和p38的磷酸化。结论ABPS的抗过敏作用与抑制肥大细胞的脱颗粒及炎性物质释放有关;ABPS抑制肥大细胞的活化与抑制Akt和p38的活性相关。
Aim To investigate the mechanism of achyranthes bidentata polysaccharides on degranulation of mast cells. Methods The experiment of passive cutaneous anaphylaxis was used to determine the effect of achyranthes bidentata polysaceharides on degranulation of mast cells in vivo. For in vitro study, various doses of achyranthes bidentata polysaccharides were added to the culture medium of sensitized RBL-2H3 cells. The antigen-induced release of degranulation was measured by enzymatic assay, histamine by EIA and cytokines by ELISA. In addition, the activation of Akt and p38 were measured by Western blot. Results Treatment with achyranthes bidentata polysaccharides was followed by a decrease in PCA of rats and β-hexosaminidase, histamine, TNF-α, IL-4, Akt and p38 of RBL-2H3 cells induced by antigen. Conclusions Achyranthes bidentata polysaccharides might suppress the anaphylactic reaction through inhibition of action of mast cells. Akt and p38 contributed at least in part to this event.
出处
《中国药理学通报》
CAS
CSCD
北大核心
2008年第10期1302-1305,共4页
Chinese Pharmacological Bulletin
基金
暨南大学引进优秀人才科研启动基金资助项目(No200301)
关键词
牛膝多糖
被动皮肤过敏反应
肥大细胞
脱颗粒
achyranthes bidentata polysaccharides
PCA reaction
mast cell
degranulation
