rectifier potassium current

AM-92016 is a specific blocker of rectifier potassium current. AM-92016 delays rectifier potassium channel and repolarizes the membrane thereby restricting the duration of the nerve impulse.

Dofetilide (UK 68789) is a sulfonamide class III antiarrhythmic agent and potassium channel blocker. Dofetilide selectively blocks cardiac ion channels of the rapid component of the delayed rectifier potassium current Ikr. This antiarrhythmic agent prolongs cardiac action potential duration and effective refractory period due to delayed repolarization without affecting conduction velocity. This results in a normal sinus rhythm. Dofetilide is used in the treatment of atrial fibrillation and flutter.

Almokalant is a class III antiarrhythmic drug, acts as a potassium channel blocker. And it inhibits a specific component (Ikr) of the time-dependent delayed rectifier K+ current.

Halofantrine hydrochloride (SKF-102886) is an orally administered antimalarial drug effective against drug-resistant P. falciparum and P. vivax. SKF-102886 has cardiac toxicity, inhibiting hERG and delayed rectifier potassium channel I Kr, leading to prolonged QTc and PR intervals.

DPO-1 is a blocker of IKur ultrarapid delayed rectifier potassium current and KV1.5 channels

DPI-201-106 is a cardioselective inhibitor of the TTX-resistant h1 Na channel inactivation. DPI-201-106 inhibits the L-type calcium current, and inward and delayed rectifier potassium currents.

1. Resibufogenin (Bufogenin) is a cytotoxic steroid isolated from the Chinese drug ChanSu. 2. Resibufogenin can inhibit rectifier potassium current ( I K ) and transient potassium current ( I A ), it has pathological effects on central nervous system. 3. Resibufogenin corrects hypertension in a rat model of human preeclampsia, it not only prevents the advent of hypertension and proteinuria, but also the development of intrauterine growth restriction.4. Resibufogenina's major metabolic pathway in the human liver is CYP3A4 dominantly mediated 5β-hydroxylation .

Zacopride is a selective agonist of inward rectifier potassium current (I K1) channel, inhibiting ventricular arrhythmias without affecting atrial arrhythmias.

Ibutilide (U70226E free base) is a potent antiarrhythmic compound that extends the action potential duration. It effectively blocks the rapidly activating delayed rectifier potassium current (I Kr ) in AT-1 cells [1].

AM92016 is a specific blocker of the time dependent delayed rectifier potassium current. AM92016 does not show any β-adrenoceptor blocking activity.

Azimilide Dihydrochloride (NE-10064 Dihydrochloride), a novel class III antiarrhythmic agent, blocks both the slowly activating (IKs) and rapidly activating (IKr) components of the delayed rectifier potassium current

Chlorahololide C is a potent and selective potassium channel blocker, it exerts potent and selective inhibition on the delayed rectifier (I(K)) K(+) current with the IC(50) value of 3.6 + - 10.1 mu M.