摘要
目的研究资木瓜总苷对大鼠嗜碱性白血病-2H3(RBL-2H3)肥大细胞脱颗粒释放β-己糖胺酶的影响。方法培养大鼠来源的RBL-2H3细胞,资木瓜总苷与RBL-2H3细胞共培养,噻唑蓝(MTT)法检测资木瓜总苷对肥大细胞的毒性作用,用荧光分光光度法定量检测RBL-2H3细胞释放的β-己糖胺酶量,计算其释放率,ELISA法检测细胞上清液肿瘤坏死因子(TNF)-α的释放量。结果资木瓜总苷与不同抗原刺激的RBL-2H3细胞作用后,细胞的β-己糖胺酶释放率及TNF-α与对照组相比均显著降低。结论资木瓜总苷可抑制RBL-2H3细胞脱颗粒,并存在着明显的量效关系,为研究抑制变态反应发生的机制提供了一定的依据。
Objective To study the effects of total saponins of Chaenomeles speciosa on release of β-hexosaminidase from rat basophilic leukemia-2H3 （ RBL-2H3 ） mast cells. Methods After rat RBL-2H3 mast cells were prepared, total saponins of Chaenomeles speciosa and the RBL-2H3 mast cells were co-cultured.The toxic effects of total saponins of Chaenomeles speciosa on mast cells were detected by MTT method, β-hexosaminidase release rate was measured by fluorescence quantitative spectrophotometric method, and cell supernatants of tumor necrosis factor-α（ TNF-α） release were detected by ELISA. Results After total saponins of Chaenomeles speciosa were co-cultured with RBL-2H3 mast cells with different antigen stimulation, β-hexosaminidase release rates and the levels of TNF-α of mast cells significantly decreased compared with the control group. Conclusion Total saponins of Chaenomeles speciosa inhibit the degranulation of RBL-2H3 mast cells in a dose dependent manner, which provids basis for studying mechanism of inhibiting allergic reactions.
出处
《医药导报》
CAS
2016年第8期819-822,共4页
Herald of Medicine
基金
国家自然科学基金资助项目(81274166)
