PMID- 28004791 OWN - NLM STAT- MEDLINE DCOM- 20180709 LR - 20220331 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Dec 22 TI - Free Triiodothyronine Level Correlates with Myocardial Injury and Prognosis in Idiopathic Dilated Cardiomyopathy: Evidence from Cardiac MRI and SPECT/PET Imaging. PG - 39811 LID - 10.1038/srep39811 [doi] LID - 39811 AB - Thyroid dysfunction is associated with poor prognosis in heart failure, but theories of mechanisms are mainly based on animal experiments, not on human level. We aimed to explore the relation between thyroid function and myocardial injuries in idiopathic dilated cardiomyopathy (IDCM) using cardiac magnetic resonance imaging (MRI), single-photon emission computed tomography (SPECT) and positron emission tomography (PET). Myocardial fibrosis was detected by late gadolinium enhancement (LGE) MRI, and myocardial perfusion/metabolism was evaluated by (99m)Tc-MIBI SPECT /(18)F-FDG PET imaging. Across the quartiles of FT3, decreased percentage of segments with LGE and perfusion/metabolism abnormalities were found. As for FT4 and TSH levels, no significant distribution trend of myocardial injuries could be detected. In logistic analysis, FT3 was independently associated with the presence of LGE (OR: 0.140, 95% CI: 0.035-0.567), perfusion abnormalities (OR: 0.172, 95% CI: 0.040-0.738) and metabolism abnormalities (OR: 0.281, 95% CI: 0.081-0.971). After a median follow-up of 46 months, LGE-positive and FT3 < 2.77 pg/mL was identified as the strongest predictor of cardiac events (HR: 8.623, 95% CI: 3.626-16.438). Low FT3 level is associated with myocardial fibrosis and perfusion/metabolism abnormalities in patients with IDCM. The combination of FT3 level and LGE provides useful information for assessing the prognosis of IDCM. FAU - Wang, Wenyao AU - Wang W AD - Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Guan, Haixia AU - Guan H AD - Department of Endocrinology and Metabolism, The First Affiliated Hospital of China Medical University, Shenyang, China. FAU - Fang, Wei AU - Fang W AD - Department of Nuclear Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Zhang, Kuo AU - Zhang K AD - Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FAU - Gerdes, A Martin AU - Gerdes AM AD - Department of Biomedical Sciences, New York Institute of Technology-College of Osteopathic Medicine, Old Westbury, New York, USA. FAU - Iervasi, Giorgio AU - Iervasi G AD - Clinical Physiology Institute, Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy. FAU - Tang, Yi-Da AU - Tang YD AD - Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. LA - eng PT - Clinical Trial PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20161222 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Contrast Media) RN - 06LU7C9H1V (Triiodothyronine) RN - AU0V1LM3JT (Gadolinium) SB - IM MH - Adult MH - *Cardiomyopathy, Dilated/blood/diagnostic imaging MH - Contrast Media/administration & dosage MH - Female MH - Follow-Up Studies MH - Gadolinium/administration & dosage MH - Humans MH - *Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - *Myocardium MH - *Positron-Emission Tomography MH - Prognosis MH - Prospective Studies MH - Triiodothyronine/*blood PMC - PMC5177909 EDAT- 2016/12/23 06:00 MHDA- 2018/07/10 06:00 PMCR- 2016/12/22 CRDT- 2016/12/23 06:00 PHST- 2016/08/19 00:00 [received] PHST- 2016/11/25 00:00 [accepted] PHST- 2016/12/23 06:00 [entrez] PHST- 2016/12/23 06:00 [pubmed] PHST- 2018/07/10 06:00 [medline] PHST- 2016/12/22 00:00 [pmc-release] AID - srep39811 [pii] AID - 10.1038/srep39811 [doi] PST - epublish SO - Sci Rep. 2016 Dec 22;6:39811. doi: 10.1038/srep39811.