“Co-administration of exendin 9-39 with exendin-4 partly … above-mentioned effect of exendin-4.These findings suggest that exendin-4 exerts an antiarrhythmic … decreasing SR calcium leak in spontaneous and burst pacing-induced ventricular arrhythmias, which may … due to reduced RyR2 phosphorylation and suppressed CaMK-II activity.”
“ Exendin-4 reduced calcium spark mass, spark frequency, and calcium leak , which may be due to reduced S2814-RyR2 and CaMK-II phosphorylation.”