Toll-like receptor 4-related regulation of Ornithogalum caudatum extract on inflammatory responses in LPS activated macrophages

作     者：Xin HAN Jian SONG Jing ZHANG Ya-mei LI Ying FAN Dan-yang SHAO Li-shuang HOU Li-hua LIAN Ji-xing NAN Yan-ling WU 

作者机构：Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules Ministry of Education College of Pharmacy Yanbian University Yanji 133002 China 

出 版 物：《中国药理学与毒理学杂志》 (Chinese Journal of Pharmacology and Toxicology)

年 卷 期：2018年第32卷第4期

页      面：284-285页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 1001[医学-基础医学(可授医学、理学学位)] 100104[医学-病理学与病理生理学] 100602[医学-中西医结合临床] 10[医学] 

基　　金：supported by National Natural Science Foundation of China(81460564 81760668 81560597 81260664 81360658 81660689) 

主　　题：尾砂提取物 巨噬细胞 炎症 临床分析 治疗方法 

摘      要：OBJECTIVE To investigate toll-like receptor 4(TLR4)-related the regulation of Ornithogalum caudatum extract(OCE) on inflammatory responses in lipopolysaccharide(LPS) activated *** Primary peritoneal macrophage,Raw 264.7,and THP-1 were incubated in 96-well plate for 24 h and treated with OCE of the concentration of 0-400 μg/ml for 4 *** viability of cells was measured by MTT *** concentrations of OCE were added into the medium of primary *** macrophage,Raw 264.7,and THP-1,respectively,then following with lipopolysaccharides(LPS).Cells were harvested and the total cellular protein and nuclear protein were extracted,and the protein content was determined using BCA protein assay *** expressions of TLR4,inducible nitric oxide synthase(iNOS),cyclooxygenase 2(COX-2),α-inhibitor of NF-κB(IκB-α) and nuclear factor-κB(NF-κB) were assayed by Western *** expressions of interleukin-1α(IL-1α),interleukin-1β(IL-1β),interleukin-18(IL-18),and tumor necrosis factor-α(TNF-α) were measured by *** The results of MTT showed that OCE has no cytotoxicity in Raw 264.7 cells between 1.56 μg/ml and 400 μg/*** with normal group,the expressions of TLR4,iNOS,COX-2,NF-κB and IL-1α,IL-1β,IL-18,TNF-α,the level of nitric oxide(NO) were significantly increased by LPS stimulation,while OCE *** reduced these increase induced by ***,OCE pretreatment reversed the reduction of IκB-α after LPS *** OCE might suppress TLR4 expression and block the *** process of NF-κB and iNOS,further decrease the expression of COX-2 and inhibit the release of inflammatory factors.