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Savi M, Bocchi L, Rossi S, Frati C, Graiani G, Lagrasta C, Miragoli M, Di Pasquale E, Stirparo GG, Mastrototaro G, Urbanek K, De Angelis A, Macchi E, Stilli D, Quaini F, Musso E. Antiarrhythmic effect of growth factor-supplemented cardiac progenitor cells in chronic infarcted heart. Am J Physiol Heart Circ Physiol 2016; 310:H1622-48. [PMID: 26993221 DOI: 10.1152/ajpheart.00035.2015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 03/10/2016] [Indexed: 12/12/2022]
Abstract
c-Kit(pos) cardiac progenitor cells (CPCs) represent a successful approach in healing the infarcted heart and rescuing its mechanical function, but electrophysiological consequences are uncertain. CPC mobilization promoted by hepatocyte growth factor (HGF) and IGF-1 improved electrogenesis in myocardial infarction (MI). We hypothesized that locally delivered CPCs supplemented with HGF + IGF-1 (GFs) can concur in ameliorating electrical stability of the regenerated heart. Adult male Wistar rats (139 rats) with 4-wk-old MI or sham conditions were randomized to receive intramyocardial injection of GFs, CPCs, CPCs + GFs, or vehicle (V). Enhanced green fluorescent protein-tagged CPCs were used for cell tracking. Vulnerability to stress-induced arrhythmia was assessed by telemetry-ECG. Basic cardiac electrophysiological properties were examined by epicardial multiple-lead recording. Hemodynamic function was measured invasively. Hearts were subjected to anatomical, morphometric, immunohistochemical, and molecular biology analyses. Compared with V and at variance with individual CPCs, CPCs + GFs approximately halved arrhythmias in all animals, restoring cardiac anisotropy toward sham values. GFs alone reduced arrhythmias by less than CPCs + GFs, prolonging ventricular refractoriness without affecting conduction velocity. Concomitantly, CPCs + GFs reactivated the expression levels of Connexin-43 and Connexin-40 as well as channel proteins of key depolarizing and repolarizing ion currents differently than sole GFs. Mechanical function and anatomical remodeling were equally improved by all regenerative treatments, thus exhibiting a divergent behavior relative to electrical aspects. Conclusively, we provided evidence of distinctive antiarrhythmic action of locally injected GF-supplemented CPCs, likely attributable to retrieval of Connexin-43, Connexin-40, and Cav1.2 expression, favoring intercellular coupling and spread of excitation in mended heart.
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Affiliation(s)
- Monia Savi
- Department of Life Sciences, University of Parma, Italy
| | | | - Stefano Rossi
- Department of Life Sciences, University of Parma, Italy
| | - Caterina Frati
- Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Italy
| | - Gallia Graiani
- Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Italy
| | - Costanza Lagrasta
- Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Italy; Cardiac Stem Cell Interdepartmental Center "CISTAC," University of Parma, Italy
| | | | - Elisa Di Pasquale
- Humanitas Clinical and Research Center, Rozzano (MI), Italy; Institute of Genetic and Biomedical Research-UOS Milan-National Research Council, Milan, Italy
| | | | | | - Konrad Urbanek
- Department of Experimental Medicine, Section of Pharmacology, Second University of Naples, Italy
| | - Antonella De Angelis
- Department of Experimental Medicine, Section of Pharmacology, Second University of Naples, Italy
| | - Emilio Macchi
- Department of Life Sciences, University of Parma, Italy; Cardiac Stem Cell Interdepartmental Center "CISTAC," University of Parma, Italy
| | - Donatella Stilli
- Department of Life Sciences, University of Parma, Italy; Cardiac Stem Cell Interdepartmental Center "CISTAC," University of Parma, Italy
| | - Federico Quaini
- Department of Clinical and Experimental Medicine, University of Parma, Italy; Cardiac Stem Cell Interdepartmental Center "CISTAC," University of Parma, Italy
| | - Ezio Musso
- Department of Life Sciences, University of Parma, Italy; Cardiac Stem Cell Interdepartmental Center "CISTAC," University of Parma, Italy
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