Cariporide

Cariporide is a selective sodium-hydrogen antiporter inhibitor. The sodium-hydrogen exchanger is an importatn player in the pathophysiology of myocardial ischemia-referfusion injury. The accumulation of hydrogen ions in the myocyte cytoso; during ischemia creates a proton gradiant that promote the efflux of hydrogen ions in exchange for the influx of sodium ions. This sodium buildup can secondary activates the sodium-calcium exchanger to operate in the reverse mode, resulting in a net calcium accumulation in myocyte cytosol, which leads to dysfunction and cell death. By inhibiting sodium-hydrogen exchange, Cariporide can prevent the accumulation of calcium in cytosol, therefore reduce the infarct size.

Agents used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Anti-arrhythmia agents are often classed into four main groups according to their mechanism of action: sodium channel blockade, beta-adrenergic blockade, repolarization prolongation, or calcium channel blockade.