PMID- 31726502 OWN - NLM STAT- MEDLINE DCOM- 20191126 LR - 20201209 IS - 1001-9391 (Print) IS - 1001-9391 (Linking) VI - 37 IP - 10 DP - 2019 Oct 20 TI - [Activation of lung endothelial cells by extracellular histone in mice with acute respiratory distress syndrome]. PG - 732-736 LID - 10.3760/cma.j.issn.1001-9391.2019.10.004 [doi] AB - Objective: To observe the changes of extracellular histones and pulmonary microvascular endothelial cells, and study the activating role of extracellular histones to pulmonary microvascular endothelial cells in the pathogenesis of acute respiratory distress syndrome (ARDS) . Methods: The correlation of the severity of acute lung injury with extracellular histones and pulmonary endothelial damage was studied through mice model, and acute lung injury was produced by aspiration of different concentrations of hydrochloric acid (0.01、0.1、0.3 and 0.5 mol/L, 2 ml/kg). Tumor necrosis factor-alpha (TNF-alpha), soluble thrombomodulin (sTM) and lung pathological change were measured. The pro-inflammatory role of extracellular histones was tested by injecting calf thymus histones (CTH) or specific anti-H4 antibody through tail vein. The direct activating role of extracellular histones to pulmonary microvascular endothelial cells was studied through pulmonary endothelial model. Results: The extracellular histones in plasma were increased obviously 6h after aspiration of different concentrations of hydrochloric acid in mice. A positive correlation was seen between extracellular histones and concentrations of aspirated hydrochloric acid (r=0.9180, P<0.05). The sTM in plasma also showed a positive correlation with concentrations of aspirated hydrochloric acid (r=0.8701, P<0.05). Merely administering CTH could not only increase TNF-alpha and sTM in plasma but also cause obvious lung injury, while specific anti-H4 antibody could relieve the inflammation and lung damage caused by CTH. Extracellular histones could directly damage pulmonary endothelial cells to release sTM in pulmonary endothelial model in vitro, while anti-H4 antibody could protect the endothelial cells. Conclusion: Extracellular histones are the key endogenic inflammatory mediators during the pathogenesis of ARDS caused by aspiration of hydrochloric acid, which could promote inflammation by directly activating pulmonary endothelial cells. FAU - Zhang, Y L AU - Zhang YL AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Zhao, J AU - Zhao J AD - Institute of Pharmacology and Toxicology, Academy of Military Medical Science, Beijing 100850, China. FAU - Guan, L AU - Guan L AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Zheng, Y M AU - Zheng YM AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Chen, M AU - Chen M AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Guo, L X AU - Guo LX AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Guan, X X AU - Guan XX AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Mao, L J AU - Mao LJ AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Li, S Q AU - Li SQ AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. FAU - Zhao, J Y AU - Zhao JY AD - Research Center of Occupational Medicine, Peking University Third Hospital, Beijing 100191, China. LA - chi GR - 81773374/National Natural Science Foundation of China/ GR - 7182179/Natural Science Foundation of Beijing Municipality/ GR - Y75513-05/Start-up Fund for Excellent Returnee of Peking University Third Hospital/ PT - Journal Article PL - China TA - Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi JT - Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases JID - 8410840 RN - 0 (Histones) RN - 0 (Thrombomodulin) RN - 0 (Tumor Necrosis Factor-alpha) RN - QTT17582CB (Hydrochloric Acid) SB - IM MH - Acute Lung Injury/chemically induced/*pathology MH - Animals MH - Endothelial Cells/*cytology/pathology MH - Histones/*blood MH - Hydrochloric Acid MH - Inflammation MH - Lung MH - Mice MH - Respiratory Distress Syndrome/chemically induced/*pathology MH - Thrombomodulin/blood MH - Tumor Necrosis Factor-alpha/blood OTO - NOTNLM OT - Acute respiratory distress syndrome OT - Endothelial cells OT - Extracellular histones OT - Inflammation OT - Mice EDAT- 2019/11/15 06:00 MHDA- 2019/11/27 06:00 CRDT- 2019/11/15 06:00 PHST- 2019/11/15 06:00 [entrez] PHST- 2019/11/15 06:00 [pubmed] PHST- 2019/11/27 06:00 [medline] AID - 10.3760/cma.j.issn.1001-9391.2019.10.004 [doi] PST - ppublish SO - Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2019 Oct 20;37(10):732-736. doi: 10.3760/cma.j.issn.1001-9391.2019.10.004.