PMID- 29843618 OWN - NLM STAT- MEDLINE DCOM- 20190314 LR - 20240326 IS - 1471-2261 (Electronic) IS - 1471-2261 (Linking) VI - 18 IP - 1 DP - 2018 May 29 TI - Plasma levels of free fatty acid differ in patients with left ventricular preserved, mid-range, and reduced ejection fraction. PG - 104 LID - 10.1186/s12872-018-0850-0 [doi] LID - 104 AB - BACKGROUND: Free fatty acids (FFAs) predicted the risk of heart failure (HF) and were elevated in HF with very low left ventricular ejection fraction (LVEF) compared to healthy subjects. The aim of this study was to investigate whether total levels of FFA in plasma differed in patients with HF with preserved (HFpEF), mid-range (HFmrEF), and reduced ejection fraction (HFrEF) and the association with the three categories. METHODS: One hundred thirty-nine patients with HFpEF, HFmrEF and HFrEF were investigated in this study. Plasma FFA levels were measured using commercially available assay kits, and LVEF was calculated by echocardiography with the Simpson biplane method. Dyspnea ranked by New York Heart Association (NYHA) was also identified. RESULTS: FFA concentrations were higher in HFrEF than in HFmrEF and HFpEF, respectively (689 +/- 321.5 mumol/L vs. 537.9 +/- 221.6 mumol/L, p = 0.036; 689 +/- 321.5 mumol/L vs. 527.5 +/- 185.5 mumol/L, p = 0.008). No significant differences in FFA levels were found between HFmrEF and HFpEF (537.9 +/- 221.6 mumol/L vs. 527.5 +/- 185.5 mumol/L, p = 0.619). In addition, we found a negative correlation between FFA levels and LVEF (regression coefficient: - 0.229, p = 0.004) and a positive correlation between FFAs and NYHA class (regression coefficient: 0.214, p = 0.014) after adjustment for clinical characteristic, medical history and therapies. ROC analysis revealed that FFAs predicted HFrEF across the three categories (AUC: 0.644, p = 0.005) and the optimal cut-off level to predict HFrEF was FFA levels above 575 mumol/L. CONCLUSIONS: FFA levels differed across the three categories, which suggests that energy metabolism differs between HFpEF, HFmrEF and HFrEF. FAU - Zhu, Ning AU - Zhu N AUID- ORCID: 0000-0002-7521-6266 AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. zhuningccc@126.com. FAU - Jiang, Wenbing AU - Jiang W AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. FAU - Wang, Yi AU - Wang Y AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. FAU - Wu, Youyang AU - Wu Y AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. FAU - Chen, Hao AU - Chen H AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. FAU - Zhao, Xuyong AU - Zhao X AD - Department of Cardiology, The Third Clinical College of Wenzhou Medical University, Wenzhou People's Hospital, No. 57 Canghou Street, Wenzhou, 325000, Zhejiang Province, People's Republic of China. LA - eng PT - Comparative Study PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20180529 PL - England TA - BMC Cardiovasc Disord JT - BMC cardiovascular disorders JID - 100968539 RN - 0 (Biomarkers) RN - 0 (Fatty Acids, Nonesterified) SB - IM MH - Aged MH - Aged, 80 and over MH - Biomarkers/blood MH - Blood Pressure MH - *Energy Metabolism MH - Fatty Acids, Nonesterified/*blood MH - Female MH - Heart Failure/*blood/diagnosis/physiopathology MH - Humans MH - Hypertension/blood/physiopathology MH - Male MH - Pilot Projects MH - *Stroke Volume MH - Up-Regulation MH - *Ventricular Function, Left PMC - PMC5975423 OTO - NOTNLM OT - Free fatty acid OT - Heart failure OT - Mid-range ejection fraction OT - Preserved ejection fraction OT - Reduced ejection fraction COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: The ethics committee of Wenzhou People's Hospital approved the study. Written informed consent was obtained from the parents of all of the participants. COMPETING INTERESTS: The authors report no relationships that could be construed as a conflict of interest. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2018/05/31 06:00 MHDA- 2019/03/15 06:00 PMCR- 2018/05/29 CRDT- 2018/05/31 06:00 PHST- 2018/02/16 00:00 [received] PHST- 2018/05/25 00:00 [accepted] PHST- 2018/05/31 06:00 [entrez] PHST- 2018/05/31 06:00 [pubmed] PHST- 2019/03/15 06:00 [medline] PHST- 2018/05/29 00:00 [pmc-release] AID - 10.1186/s12872-018-0850-0 [pii] AID - 850 [pii] AID - 10.1186/s12872-018-0850-0 [doi] PST - epublish SO - BMC Cardiovasc Disord. 2018 May 29;18(1):104. doi: 10.1186/s12872-018-0850-0.