Coronary Sinus Metabolite 12,13-diHOME Is a Novel Biomarker for Left Atrial Remodeling in Patients With Atrial Fibrillation

Author:

Tang Xixiang1ORCID,Wang Jiafu2ORCID,Ouyang Xiaolan2,Chen Qian2,Dong Ruimin2,Luo Yanting2,Zhong Junlin2,Huang Zhuoshan2,Peng Long2,Xie Xujing2,Zhu Jieming3,Zheng Zhenda2,Li Suhua2ORCID

Affiliation:

1. VIP Medical Service Center (X.T.), the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.

2. Department of Cardiovascular Medicine (J.W., X.O., Q.C., R.D., Y.L., Z.H., L.P., X.X., J.Z., Z.Z., S.L.), the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.

3. Department of Ultrasonography (J.Z.), the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.

Abstract

BACKGROUND: 12,13-dihydroxy-9Z-octadecenoic acid (12,13-diHOME) has shown potential in protecting against heart disease, but its relationship with atrial fibrillation (AF) remains unknown. METHODS: Coronary sinus (CS) and femoral vein blood samplings were synchronously collected from AF and non-AF subjects (paroxysmal supraventricular tachycardia or idiopathic premature ventricular complexes) who underwent catheter ablation. First, untargeted metabolomic profiling was performed in a discovery cohort (including 12 AF and 12 non-AF subjects) to identify the most promising CS or femoral vein metabolite. Then, the selected metabolite was further measured in a validation cohort (including 119 AF and 103 non-AF subjects) to confirm its relationship with left atrium remodeling and 1-year postablation recurrence of AF. Finally, the biological function of the selected metabolite was validated in a rapid-paced cultured HL-1 atrial cardiomyocytes model. RESULTS: Metabolomic analysis identified CS 12,13-diHOME as the most pronounced change metabolite correlated with left atrium remodeling in the discovery cohort. In the validation cohort, CS 12,13-diHOME was significantly lower in patients with AF than non-AF controls (84.32±20.13 versus 96.24±23.56 pg/mL; P <0.01), and associated with worse structural, functional, and electrical remodeling of left atrium. Multivariable regression analyses further demonstrated that decreased CS 12,13-diHOME was an independent predictor of 1-year postablation recurrence of AF (odds ratio, 0.754 [95% CI, 0.648–0.920]; P =0.005). Biological function validations showed that 12,13-diHOME treatment significantly protect the cell viability, improved the expression of MHC (myosin heavy chain) and Cav1.2 (L-type calcium channel α1c), and attenuated mitochondrial damage in the rapid-paced cultured HL-1 cardiomyocytes model. CONCLUSIONS: CS metabolite 12,13-diHOME is decreased in patients with AF and can serve as a novel biomarker for left atrium remodeling.

Publisher

Ovid Technologies (Wolters Kluwer Health)

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