PMID- 26241638 OWN - NLM STAT- MEDLINE DCOM- 20160714 LR - 20150915 IS - 1874-1754 (Electronic) IS - 0167-5273 (Linking) VI - 199 DP - 2015 Nov 15 TI - Role of Non-Transferrin-Bound Iron in the pathogenesis of cardiotoxicity in patients with ST-elevation myocardial infarction assessed by Cardiac Magnetic Resonance Imaging. PG - 326-32 LID - S0167-5273(15)30177-7 [pii] LID - 10.1016/j.ijcard.2015.07.056 [doi] AB - BACKGROUND: Hereditary hemochromatosis, thalassemia and myelodysplastic syndromes represent disease models with evidence of iron-related heart failure. Non-Transferrin Bound Iron (NTBI) induces cardiac toxicity through the production of reactive oxygen species and lipid peroxidation. In ST-elevation acute myocardial infarction (STEMI) with evidence of microvascular obstruction (MVO) and hemorrhage (HEM), HEM may be a source of iron-related cardiac toxicity through NTBI and pro-inflammatory mediators. AIM OF THE STUDY: The study aims to assess NTBI in patients with STEMI and its possible relationship with MVO and HEM. METHODS AND RESULTS: NTBI, LPO-Malondialdehyde (MDA) and interleukin-6 (IL-6) were assessed in 15 patients with STEMI immediately before primary percutaneous coronary intervention (PPCI) and at 3, 6, 9, 12, and 24h post-PPCI. Cardiac Magnetic Resonance (CMR) was performed at 5days and 6months after STEMI. Myocardial edema and HEM were assessed by T2 and T2* mapping. MVO and necrotic area were assessed by early and late gadolinium enhancement (LGE). NTBI was detected in 13/15 patients with the highest values in 4 patients with evidence of MVO and HEM. NTBI levels were significantly related to CK-MB and troponin T values. NTBI kinetics appeared to be different in patients with MVO and HEM (7/15 patients), with a peak value at 6h after PCI, in comparison with those with no evidence of MVO and HEM, in whom NTBI values were lower and remained indeterminable after the first 24h. CONCLUSIONS: The detection of elevated NTBI values in patients with STEMI, MVO and HEM suggests a possible role of iron cardiotoxicity in myocardial damage. CI - Copyright (c) 2015 Elsevier Ireland Ltd. All rights reserved. FAU - Roghi, Alberto AU - Roghi A AD - CMR Unit, Department of Cardiology and Cardiovascular Surgery, Niguarda Ca'Granda Hospital, Milan, Italy. Electronic address: alberto.roghi@gmail.com. FAU - Poggiali, Erika AU - Poggiali E AD - Department of Clinical Sciences and Community Health, University of Milan, Italy; Department of Medicine and Medical Specialties, Ca'Granda Foundation IRCCS, Ospedale Maggiore, Milan, Italy. FAU - Duca, Lorena AU - Duca L AD - Department of Medicine and Medical Specialties, Ca'Granda Foundation IRCCS, Ospedale Maggiore, Milan, Italy. FAU - Mafrici, Antonio AU - Mafrici A AD - Cardiology Unit, San Carlo Borromeo Hospital, Milan, Italy. FAU - Pedrotti, Patrizia AU - Pedrotti P AD - CMR Unit, Department of Cardiology and Cardiovascular Surgery, Niguarda Ca'Granda Hospital, Milan, Italy. FAU - Paccagnini, Stefania AU - Paccagnini S AD - Biochemistry Laboratories, Niguarda Ca'Granda Hospital, Milan, Italy. FAU - Brenna, Sergio AU - Brenna S AD - Biochemistry Laboratories, Niguarda Ca'Granda Hospital, Milan, Italy. FAU - Galli, Alessio AU - Galli A AD - Cardiovascular Disease Unit, Ca'Granda Foundation IRCCS, Ospedale Maggiore Policlinico, Department of Medicine and Medical Specialties, Milan, Italy. FAU - Consonni, Dario AU - Consonni D AD - Epidemiology Unit, Department of Preventive Medicine, Ca'Granda Foundation IRCCS, Ospedale Maggiore Policlinico, Milan, Italy. FAU - Cappellini, Maria Domenica AU - Cappellini MD AD - Department of Clinical Sciences and Community Health, University of Milan, Italy; Department of Medicine and Medical Specialties, Ca'Granda Foundation IRCCS, Ospedale Maggiore, Milan, Italy. LA - eng PT - Journal Article DEP - 20150723 PL - Netherlands TA - Int J Cardiol JT - International journal of cardiology JID - 8200291 RN - 0 (IL6 protein, human) RN - 0 (Interleukin-6) RN - 0 (Transferrins) RN - 0 (Troponin T) RN - 4Y8F71G49Q (Malondialdehyde) RN - E1UOL152H7 (Iron) RN - EC 2.7.3.2 (Creatine Kinase, MB Form) SB - IM MH - Creatine Kinase, MB Form/metabolism MH - Female MH - Hemorrhage/metabolism MH - Humans MH - Interleukin-6/metabolism MH - Iron/blood/*metabolism MH - Magnetic Resonance Imaging/*methods MH - Male MH - Malondialdehyde/metabolism MH - Microcirculation/physiology MH - Microvessels/pathology MH - Middle Aged MH - Myocardial Infarction/blood/*metabolism/pathology/therapy MH - Myocarditis/metabolism/pathology MH - Myocardium/metabolism/pathology MH - Percutaneous Coronary Intervention MH - Prospective Studies MH - Reperfusion Injury/physiopathology MH - Transferrins/blood/*metabolism MH - Troponin T/blood/metabolism MH - Ventricular Remodeling OTO - NOTNLM OT - Iron OT - Myocardial infarction OT - Non-Transferrin Bound Iron OT - Reperfusion injury EDAT- 2015/08/05 06:00 MHDA- 2016/07/15 06:00 CRDT- 2015/08/05 06:00 PHST- 2015/03/12 00:00 [received] PHST- 2015/07/18 00:00 [accepted] PHST- 2015/08/05 06:00 [entrez] PHST- 2015/08/05 06:00 [pubmed] PHST- 2016/07/15 06:00 [medline] AID - S0167-5273(15)30177-7 [pii] AID - 10.1016/j.ijcard.2015.07.056 [doi] PST - ppublish SO - Int J Cardiol. 2015 Nov 15;199:326-32. doi: 10.1016/j.ijcard.2015.07.056. Epub 2015 Jul 23.