CaMKII cardiomyocyte model#
CaMKII model: “Mechanisms of Ca2+/calmodulin-dependent kinase II activation in single dendritic spines” (Chang et al., 2019, Nature Communications); Chang(2019)
ROS activation model: Oxidized Calmodulin Kinase II Regulates Conduction Following Myocardial Infarction: A Computational Analysis (Christensen et al. 2009); Christensen(2019)
Isoproterenol and CaMKII effects: A novel computational model of mouse myocyte electrophysiology to assess the synergy between Na+ loading and CaMKII. (Moritti et al. 2014); Moritti(2014)
Neonatal rat ventricular myocyte (NRVM) model: Model of Excitation-Contraction Coupling of Rat Neonatal Ventricular Myocytes (Korhonen et al. 2009); Korhonen(2009)
Adjusted from the original models#
Beta-adrenergic system#
The activities of PKACI, PKACII, PP1, and their downstream targets (SERCA, LCC, RyR, and NCX) are described by Hill functions, fitted to the activities in the original beta-adrenergic system in Moritti(2014) across a range of isoproterenol.
CaMKII system#
Association/dissociation rates of CaMKII and CaM-calcium (kf, kb) is fitted to Chang(2019) model across a range of cytosolic calcium.
Autophosphorylation/dephosphorylation rates of CaMKII (kdp, kph) are adapted from Chang(2019) model.
Oxidation/reduction rates of CaMKII (kox, krd) are adapted from Christensen(2019) model.
Neonatal rat ventricular cardiomyocyte (NRVM)#
Caffeine activation of RyR: increasing sensitivity to Sub-SR Ca instead of constant opening.
Compartment corrections for SR Ca and Sub-SR Ca ODEs.
Fast sodium channel gating variable recovery rates increased by 3 times to accomodate 2Hz and 3Hz pacing.