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Lou Q, Hansen BJ, Fedorenko O, Csepe TA, Kalyanasundaram A, Li N, Hage LT, Glukhov AV, Billman GE, Weiss R, Mohler PJ, Györke S, Biesiadecki BJ, Carnes CA, Fedorov VV. Upregulation of adenosine A1 receptors facilitates sinoatrial node dysfunction in chronic canine heart failure by exacerbating nodal conduction abnormalities revealed by novel dual-sided intramural optical mapping. Circulation 2014; 130:315-24. [PMID: 24838362 DOI: 10.1161/circulationaha.113.007086] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Although sinoatrial node (SAN) dysfunction is a hallmark of human heart failure (HF), the underlying mechanisms remain poorly understood. We aimed to examine the role of adenosine in SAN dysfunction and tachy-brady arrhythmias in chronic HF. METHODS AND RESULTS We applied multiple approaches to characterize SAN structure, SAN function, and adenosine A1 receptor expression in control (n=17) and 4-month tachypacing-induced chronic HF (n=18) dogs. Novel intramural optical mapping of coronary-perfused right atrial preparations revealed that adenosine (10 μmol/L) markedly prolonged postpacing SAN conduction time in HF by 206 ± 99 milliseconds (versus 66 ± 21 milliseconds in controls; P=0.02). Adenosine induced SAN intranodal conduction block or microreentry in 6 of 8 dogs with HF versus 0 of 7 controls (P=0.007). Adenosine-induced SAN conduction abnormalities and automaticity depression caused postpacing atrial pauses in HF versus control dogs (17.1 ± 28.9 versus 1.5 ± 1.3 seconds; P<0.001). Furthermore, 10 μmol/L adenosine shortened atrial repolarization and led to pacing-induced atrial fibrillation in 6 of 7 HF versus 0 of 7 control dogs (P=0.002). Adenosine-induced SAN dysfunction and atrial fibrillation were abolished or prevented by adenosine A1 receptor antagonists (50 μmol/L theophylline/1 μmol/L 8-cyclopentyl-1,3-dipropylxanthine). Adenosine A1 receptor protein expression was significantly upregulated during HF in the SAN (by 47 ± 19%) and surrounding atrial myocardium (by 90 ± 40%). Interstitial fibrosis was significantly increased within the SAN in HF versus control dogs (38 ± 4% versus 23 ± 4%; P<0.001). CONCLUSIONS In chronic HF, adenosine A1 receptor upregulation in SAN pacemaker and atrial cardiomyocytes may increase cardiac sensitivity to adenosine. This effect may exacerbate conduction abnormalities in the structurally impaired SAN, leading to SAN dysfunction, and potentiate atrial repolarization shortening, thereby facilitating atrial fibrillation. Atrial fibrillation may further depress SAN function and lead to tachy-brady arrhythmias in HF.
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Affiliation(s)
- Qing Lou
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Brian J Hansen
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Olga Fedorenko
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Thomas A Csepe
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Anuradha Kalyanasundaram
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Ning Li
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Lori T Hage
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Alexey V Glukhov
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - George E Billman
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Raul Weiss
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Peter J Mohler
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Sándor Györke
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Brandon J Biesiadecki
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Cynthia A Carnes
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.)
| | - Vadim V Fedorov
- From the Department of Physiology and Cell Biology (Q.L., B.J.H., O.F., T.A.C., A.K., N.L., L.T.H., A.V.G., G.E.B., P.J.M., S.G., B.J.B., V.V.F.), Davis Heart & Lung Research Institute (Q.L., A.K., G.E.B., R.W., P.J.M., S.G., B.J.B., C.A.C., V.V.F.), and Department of Internal Medicine (R.W., P.J.M.), The Ohio State University Wexner Medical Center, Columbus, OH; Mental Health Research Institute and National Research Tomsk Polytechnic University, Tomsk, Russia (O.F.); and College of Pharmacy, The Ohio State University, Columbus (C.A.C.).
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