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GH-releasing peptides (GHRP) are synthetic peptides exerting GH-dependent or GH-independent effects via GH secretagogue receptor on many organs, including the heart. The underlying mechanisms of the cardiotropic properties of GHRP are poorly understood. This study investigates these effects of four GHRP in isolated perfused heart preparations and isolated neonatal and adult ventricular myocytes. The calcium response of cardiocytes to GHRP was visualized using confocal microscopy. All testeddoi:10.1210/en.2003-0025 pmid:12960059 fatcat:2gusl6nzqvch3pecdrbtuvyw44