PMID- 32135490 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240227 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 82 DP - 2020 Mar 2 TI - Attenuation of pristimerin on TNF-alpha-induced endothelial inflammation. PG - 106326 LID - S1567-5769(19)32706-7 [pii] LID - 10.1016/j.intimp.2020.106326 [doi] AB - OBJECTIVE: Pristimerin is known to have anti-cancer and anti-inflammatory activities; however, its therapeutic mechanism has not been described. In this study, to investigate the therapeutic mechanism of pristimerin, we examined the effect of pristimerin on TNF-alpha-induced endothelial inflammatory response both in vitro and in vivo. METHODS: Leukocyte-endothelium Adhesion Assay was use to evaluate the endothelial cell-monocyte interaction. Western blotting was used to confirm protein expression. NF-kappaB p65 nuclear translocation in endothelial cells was detected using immunofluorescent microscopy. In vivo leukocyte infiltration was evaluated using acute lung inflammation model. RESULTS: Pristimerin profoundly inhibited TNF-alpha-induced adhesion of monocytes to human endothelial cells and the leukocyte transmigration. Pristimerin dramatically inhibited the expression of TNF-alpha-induced endothelial adhesion molecules (intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1)) and the pro-inflammatory cytokine (IL-6, IL-8 and monocyte chemoattractant protein-1 (MCP-1)). Pristimerin suppressed the penetration of the leukocyte in the acute lung injury mice model. Furthermore, pristimerin also suppressed the TNF-alpha-activated Nuclear factor kappa B (NF-kappaB) activation. CONCLUSIONS: Pristimerin has the anti-inflammatory properties in endothelial cells, at least in part, through the suppression of NF-kappaB activation, which may have a potential therapeutic effects for inflammatory vascular diseases. CI - Copyright (c) 2020. Published by Elsevier B.V. FAU - Liang, Jiang AU - Liang J AD - Collaborative Innovation Center of Miao Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China; Department of Rheamatology and Hematology, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, China. FAU - Yuan, Shiwen AU - Yuan S AD - Department of Rheumatology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China. FAU - Wang, Xiaohua AU - Wang X AD - Department of Nephrology,Kidney and Urology Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, ShenZhen, Guandong, China. FAU - Lei, Yan AU - Lei Y AD - Department of Nephrology,Kidney and Urology Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, ShenZhen, Guandong, China. FAU - Zhang, Xuemei AU - Zhang X AD - Department of Nephrology,Kidney and Urology Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, ShenZhen, Guandong, China. FAU - Huang, Mingcheng AU - Huang M AD - Department of Nephrology,Kidney and Urology Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, ShenZhen, Guandong, China. Electronic address: ouyh3@mail2.sysu.edu.cn. FAU - Ouyang, Hui AU - Ouyang H AD - Department of Digestive Medicine Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, ShenZhen, Guandong, China. Electronic address: huangcongen2018@sina.com. LA - eng PT - Journal Article DEP - 20200302 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 SB - IM OTO - NOTNLM OT - Endothelial cells OT - Pristimerin OT - Vascular inflammation COIS- Declaration of Competing Interest The authors declared that there is no conflict of interest. EDAT- 2020/03/07 06:00 MHDA- 2020/03/07 06:01 CRDT- 2020/03/06 06:00 PHST- 2019/11/23 00:00 [received] PHST- 2020/01/30 00:00 [revised] PHST- 2020/02/14 00:00 [accepted] PHST- 2020/03/07 06:01 [medline] PHST- 2020/03/07 06:00 [pubmed] PHST- 2020/03/06 06:00 [entrez] AID - S1567-5769(19)32706-7 [pii] AID - 10.1016/j.intimp.2020.106326 [doi] PST - aheadofprint SO - Int Immunopharmacol. 2020 Mar 2;82:106326. doi: 10.1016/j.intimp.2020.106326.