Antiarrhythmics, Class Ia

Name
Antiarrhythmics, Class Ia
Accession Number
DBCAT002277  (DBCAT003653)
Description

Reduce phase 0 slope and peak of the cardiac action potential. Moderate reduction in phase 0 slope; increase (APD atrial premature depolarization ); increase ERP (effective refractory period).

ATC Classification
Drugs
DrugDrug Description
DisopyramideA class 1A antiarrhythmic agent used to treat life-threatening ventricular arrhythmias.
QuinidineA medication used to restore normal sinus rhythm, treat atrial fibrillation and flutter, and treat ventricular arrhythmias.
ProcainamideA medication used to treat life threatening ventricular arrhythmias.
AjmalineFor use as an antiarrhythmic agent.
SparteineSparteine is a plant alkaloid derived from Cytisus scoparius and Lupinus mutabilis which may chelate calcium and magnesium. It is a sodium channel blocker so it falls under the category...
PrajmalineNot Annotated
LorajmineNot Annotated
CibenzolineNot Annotated
HydroquinidineHydroquinidine is under investigation in clinical trial NCT00927732 (Hydroquinidine Versus Placebo in Patients With Brugada Syndrome).
Drugs & Drug Targets
DrugTargetType
DisopyramideSodium channel protein type 5 subunit alphatarget
DisopyramideAlpha-1-acid glycoprotein 1carrier
DisopyramideCytochrome P450 3A4enzyme
DisopyramideMuscarinic acetylcholine receptor M1target
DisopyramideMuscarinic acetylcholine receptor M2target
DisopyramideMuscarinic acetylcholine receptor M3target
DisopyramidePotassium voltage-gated channel subfamily D member 2target
DisopyramidePotassium voltage-gated channel subfamily D member 3target
DisopyramideSolute carrier family 22 member 2transporter
DisopyramideSolute carrier family 22 member 1transporter
DisopyramidePotassium voltage-gated channel subfamily H member 2target
DisopyramideAlpha-1-acid glycoprotein 2target
DisopyramideCytochrome P450 1A2enzyme
QuinidineSodium channel protein type 5 subunit alphatarget
QuinidineAlpha-1-acid glycoprotein 1carrier
QuinidinePotassium voltage-gated channel subfamily H member 2target
QuinidinePotassium channel subfamily K member 1target
QuinidinePotassium channel subfamily K member 6target
QuinidineCytochrome P450 1A2enzyme
QuinidineCytochrome P450 2E1enzyme
QuinidineCytochrome P450 1A1enzyme
QuinidineCytochrome P450 2D6enzyme
QuinidineCytochrome P450 3A4enzyme
QuinidineCytochrome P450 3A7enzyme
QuinidineSolute carrier family 22 member 2transporter
QuinidineSolute carrier family 22 member 1transporter
QuinidineSolute carrier family 22 member 5transporter
QuinidineP-glycoprotein 1transporter
QuinidineSolute carrier organic anion transporter family member 1A2transporter
QuinidineSolute carrier family 22 member 8transporter
QuinidineCanalicular multispecific organic anion transporter 1transporter
QuinidineSolute carrier family 22 member 4transporter
QuinidineSolute carrier organic anion transporter family member 1B1transporter
QuinidineCytochrome P450 2B6enzyme
QuinidineCytochrome P450 2C9enzyme
QuinidineAlpha-1A adrenergic receptortarget
QuinidineAlpha-1B adrenergic receptortarget
QuinidineAlpha-1D adrenergic receptortarget
QuinidineBile salt export pumptransporter
QuinidineCytochrome P450 2C8enzyme
ProcainamideSodium channel protein type 5 subunit alphatarget
ProcainamideDNA (cytosine-5)-methyltransferase 1target
ProcainamideCytochrome P450 2D6enzyme
ProcainamideCholinesteraseenzyme
ProcainamideSolute carrier family 22 member 2transporter
ProcainamideSolute carrier family 22 member 1transporter
ProcainamideSolute carrier family 22 member 3transporter
ProcainamideSolute carrier family 22 member 5transporter
ProcainamideSolute carrier family 22 member 4transporter
ProcainamidePotassium voltage-gated channel subfamily H member 2target
ProcainamideMultidrug and toxin extrusion protein 1transporter
ProcainamideMultidrug and toxin extrusion protein 2transporter
AjmalineAlpha-1-acid glycoprotein 1carrier
AjmalineSodium channel protein type 5 subunit alphatarget
SparteineCytochrome P450 2D6enzyme