PMID- 31312919 OWN - NLM STAT- MEDLINE DCOM- 20200210 LR - 20220214 IS - 1435-1803 (Electronic) IS - 0300-8428 (Print) IS - 0300-8428 (Linking) VI - 114 IP - 5 DP - 2019 Jul 16 TI - Neutrophil extracellular traps and fibrocytes in ST-segment elevation myocardial infarction. PG - 33 LID - 10.1007/s00395-019-0740-3 [doi] LID - 33 AB - Leukocyte-mediated inflammation is central in atherothrombosis and ST-segment elevation myocardial infarction (STEMI). Neutrophil extracellular traps (NETs) have been shown to enhance atherothrombosis and stimulate fibroblast function. We analyzed the effects of NETs on cardiac remodeling after STEMI. We measured double-stranded (ds)DNA and citrullinated histone H3 (citH3) as NET surrogate markers in human culprit site and femoral blood collected during primary percutaneous coronary intervention (n = 50). Fibrocytes were characterized in whole blood by flow cytometry, and in culprit site thrombi and myocardium by immunofluorescence. To investigate mechanisms of fibrocyte activation, isolated NETs were used to induce fibrocyte responses in vitro. Enzymatic infarct size was assessed using creatine-phosphokinase isoform MB area under the curve. Left ventricular function was measured by transthoracic echocardiography. NET surrogate markers were increased at the culprit site compared to the femoral site and were positively correlated with infarct size and left ventricular dysfunction at follow-up. In vitro, NETs promoted fibrocyte differentiation from monocytes and induced fibrocyte activation. Highly activated fibrocytes accumulated at the culprit site and in the infarct transition zone. Our data suggest that NETs might be important mediators of fibrotic remodeling after STEMI, possibly by stimulating fibrocytes. FAU - Hofbauer, Thomas M AU - Hofbauer TM AUID- ORCID: 0000-0001-5324-6336 AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Mangold, Andreas AU - Mangold A AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Scherz, Thomas AU - Scherz T AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Seidl, Veronika AU - Seidl V AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Panzenbock, Adelheid AU - Panzenbock A AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Ondracek, Anna S AU - Ondracek AS AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Muller, Julian AU - Muller J AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Schneider, Matthias AU - Schneider M AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Binder, Thomas AU - Binder T AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Hell, Lena AU - Hell L AD - Division of Haematology and Haemostaseology, Department of Internal Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. FAU - Lang, Irene M AU - Lang IM AD - Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. irene.lang@meduniwien.ac.at. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190716 PL - Germany TA - Basic Res Cardiol JT - Basic research in cardiology JID - 0360342 SB - IM MH - Adult MH - Aged MH - *Extracellular Traps MH - Female MH - Fibroblasts/*pathology MH - Fibrosis/physiopathology MH - Humans MH - Leukocytes/*pathology MH - Male MH - Middle Aged MH - ST Elevation Myocardial Infarction/immunology/pathology/*physiopathology MH - Ventricular Remodeling/*physiology PMC - PMC6647191 OTO - NOTNLM OT - Fibrocytes OT - Neutrophil extracellular traps OT - ST-segment elevation myocardial infarction OT - Thrombosis COIS- None declared. EDAT- 2019/07/18 06:00 MHDA- 2020/02/11 06:00 PMCR- 2019/07/16 CRDT- 2019/07/18 06:00 PHST- 2019/03/24 00:00 [received] PHST- 2019/06/26 00:00 [accepted] PHST- 2019/07/18 06:00 [entrez] PHST- 2019/07/18 06:00 [pubmed] PHST- 2020/02/11 06:00 [medline] PHST- 2019/07/16 00:00 [pmc-release] AID - 10.1007/s00395-019-0740-3 [pii] AID - 740 [pii] AID - 10.1007/s00395-019-0740-3 [doi] PST - epublish SO - Basic Res Cardiol. 2019 Jul 16;114(5):33. doi: 10.1007/s00395-019-0740-3.