FFAR4 and myocardial infarction: The aims of this study were to (a) investigate whether the chronic administration of icosapent ethyl (IPE), a highly purified synthetic derivative of EPA, could attenuate arrhythmias by enhancing the expression of Cx43; and (b) assess the role of GPR120 in regulating the expression of Cx43 in a rat MI model using an agonist and antagonist of GPR120.