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Among the pathways involved in this adaptation, the sympathetic nervous system, specifically, \u03b2-adrenergic receptors (\u03b2-ARs), plays a central role. Stimulation of \u03b2-ARs enhances cardiac contractility by activating protein kinase A (PKA), a key mediator in downstream signaling that regulates excitation-contraction coupling (ECC) through ECC-related proteins. A-kinase-anchoring proteins (AKAPs) act as scaffolds for PKA, organizing compartmentalized signaling events. Recent studies have highlighted the role of AKAP12 in recruiting phosphodiesterase 8 (PDE8) following \u03b2-ARs activation. PDE8 is a cyclic adenosine monophosphate (cAMP)-specific phosphodiesterase that hydrolyzes cAMP, thereby limiting the inotropic responses mediated by \u03b2-ARs. Although other PDE isoforms (PDE3, PDE4, and PDE5) have been extensively studied and targeted for therapy in heart failure, PDE8 has received relatively little attention. 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