PMID- 34130918 OWN - NLM STAT- MEDLINE DCOM- 20211213 LR - 20211214 IS - 1444-2892 (Electronic) IS - 1443-9506 (Linking) VI - 31 IP - 1 DP - 2022 Jan TI - Evaluation of Asymmetric Dimethylarginine Levels in Patients With Chronic Thromboembolic Pulmonary Hypertension Undergoing Pulmonary Endarterectomy. PG - 110-118 LID - S1443-9506(21)00552-7 [pii] LID - 10.1016/j.hlc.2021.05.090 [doi] AB - BACKGROUND: Chronic thromboembolic pulmonary hypertension (CTEPH) is a form of pulmonary embolism, and pulmonary endarterectomy (PEA) is the surgical treatment. Asymmetric dimethylarginine (ADMA) levels are increased in pulmonary hypertension. This study aimed to investigate serum ADMA levels in patients with CTEPH, the effect of PEA on ADMA, and its prognostic value in long-term mortality. METHOD: Eighty (80) patients with CTEPH and 32 healthy controls were included. Preoperative serum ADMA levels, determined using an enzyme-linked immunosorbent assay, were compared between patients with CTEPH and controls. Of 80 patients, 64 had PEA. Pre- and 6-month postoperative serum ADMA levels, 6-minute walk distance (6MWD), and haemodynamic parameters were collected from patients undergoing PEA. Patients were followed-up for survival analysis. RESULTS: Mean +/- standard deviation serum ADMA levels were significantly higher in patients with CTEPH compared with controls (0.79+/-0.32 mumol/L vs 0.52+/-0.12 mumol/L; p=0.0001). Statistically significant differences were observed between preoperative and postoperative serum ADMA levels (0.78+/-0.30 mumol/L vs 0.62+/-0.22 mumol/L; p=0.0001), 6MWD (p=0.0001), and pulmonary vascular resistance (p=0.0001) in 60 patients who underwent and survived PEA. The decrease in serum ADMA levels and increase in 6MWD were significantly correlated (r=-0.286, p=0.027). No other correlation was found. Perioperative mortality was 6.3%, and the survival rate with a mean follow-up of 34.57+/-8.20 months was 93.3%. Patients with serum ADMA levels >0.8 mumol/L had a significantly lower survival rate (logrank: 5.86; p=0.015). CONCLUSIONS: Levels of circulating ADMA might add diagnostic and prognostic information in CTEPH. Pulmonary endarterectomy is associated with an improvement in serum ADMA levels. Preoperative serum ADMA levels may be useful for estimating the outcome of PEA. CI - Copyright (c) 2021 Australian and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) and the Cardiac Society of Australia and New Zealand (CSANZ). Published by Elsevier B.V. All rights reserved. FAU - Turer Cabbar, Ayca AU - Turer Cabbar A AD - Department of Cardiology, Yeditepe University School of Medicine, Istanbul, Turkey. Electronic address: turerayca@gmail.com. FAU - Degertekin, M Muzaffer AU - Degertekin MM AD - Department of Cardiology, Yeditepe University School of Medicine, Istanbul, Turkey. FAU - Simsek, Mustafa A AU - Simsek MA AD - Department of Cardiology, Yeditepe University School of Medicine, Istanbul, Turkey. FAU - Ozveren, Olcay AU - Ozveren O AD - Department of Cardiology, Yeditepe University School of Medicine, Istanbul, Turkey. FAU - Gulec, Seda AU - Gulec S AD - Department of Medical Biology, Yeditepe University School of Medicine, Istanbul, Turkey. FAU - Yanartas, Mehmed AU - Yanartas M AD - Department of Cardiovascular Surgery, Kartal Kosuyolu High Specialty Educational and Research Hospital, Istanbul, Turkey. FAU - Gezer Tas, Serpil AU - Gezer Tas S AD - Department of Cardiovascular Surgery, Kartal Kosuyolu High Specialty Educational and Research Hospital, Istanbul, Turkey. FAU - Olgun Yildizeli, Sehnaz AU - Olgun Yildizeli S AD - Department of Pulmonary and Intensive Care, Marmara University Istanbul Pendik Educational and Research Hospital, Istanbul, Turkey. FAU - Mutlu, Bulent AU - Mutlu B AD - Department of Cardiology, Marmara University Istanbul Pendik Educational and Research Hospital, Istanbul, Turkey. FAU - Isbir, Turgay AU - Isbir T AD - Department of Medical Biology, Yeditepe University School of Medicine, Istanbul, Turkey. FAU - Yildizeli, Bedrettin AU - Yildizeli B AD - Department of Thoracic Surgery, Marmara University Istanbul Pendik Educational and Research Hospital, Istanbul, Turkey. LA - eng PT - Journal Article DEP - 20210612 PL - Australia TA - Heart Lung Circ JT - Heart, lung & circulation JID - 100963739 RN - 63CV1GEK3Y (N,N-dimethylarginine) RN - 94ZLA3W45F (Arginine) SB - IM MH - Arginine/analogs & derivatives MH - Chronic Disease MH - Endarterectomy MH - Humans MH - *Hypertension, Pulmonary/diagnosis/surgery OTO - NOTNLM OT - Asymmetric dimethylarginine OT - Chronic thromboembolic pulmonary hypertension OT - Pulmonary endarterectomy EDAT- 2021/06/17 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/06/16 06:00 PHST- 2021/01/17 00:00 [received] PHST- 2021/04/13 00:00 [revised] PHST- 2021/05/10 00:00 [accepted] PHST- 2021/06/17 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/06/16 06:00 [entrez] AID - S1443-9506(21)00552-7 [pii] AID - 10.1016/j.hlc.2021.05.090 [doi] PST - ppublish SO - Heart Lung Circ. 2022 Jan;31(1):110-118. doi: 10.1016/j.hlc.2021.05.090. Epub 2021 Jun 12.