Cardiomyocyte regulation

Cardiomyocyte regulation is a comprehensive physiological term describing the orchestration of cellular signaling, metabolic pathways, and structural proteins that maintain the heart's pumping function. It encompasses the modulation of excitation-contraction coupling, where calcium ions trigger sarcomere shortening, and the autonomic influence on heart rate and contractility [7, 8]. Key molecular players in this regulatory network include G protein-coupled receptors (GPCRs), ion channels like Nav1.5 and RyR2, and transcriptional regulators that drive cardiac remodeling [7, 11]. In diseased states, such as heart failure or hypertrophic cardiomyopathy, these regulatory mechanisms become maladaptive, leading to impaired contractility and arrhythmias [5, 10]. Therapeutic agents often used to influence cardiomyocyte regulation include beta-blockers, which inhibit overactive sympathetic signaling, and calcium channel blockers, which manage electrical excitability [8, 9]. Because the term describes a multifaceted biological process involving hundreds of molecular components rather than a specific protein or enzyme, it is not considered a single therapeutic target in drug discovery [1, 7]. Instead, it serves as a high-level description for the systemic control of cardiomyocyte physiology.

Other names

Myocardial regulationCardiac cell regulationHeart muscle cell regulationRegulation of cardiomyocyte function

Modulation of cardiac physiological processes through the targeting of specific receptors (e.g., beta-adrenergic receptors), enzymes (e.g., phosphodiesterases), and ion channels (e.g., L-type calcium channels).