Repositioning Candidate Details

Candidate ID: R1258
Source ID: DB09236
Source Type: approved; investigational
Compound Type: small molecule
Compound Name: Lacidipine
Synonyms: Lacidipine
Molecular Formula: C26H33NO6
SMILES: CCOC(=O)C1=C(C)NC(C)=C(C1C1=CC=CC=C1\C=C\C(=O)OC(C)(C)C)C(=O)OCC
Structure:
DrugBank Description: Lacidipine is a lipophilic dihydropyridine calcium antagonist with an intrinsically slow onset of activity. Due to its long duration of action, lacidipine does not lead to reflex tachycardia . It displays specificity in the vascular smooth muscle, where it acts as an antihypertensive agent to dilate peripheral arterioles and reduce blood pressure. Compared to other dihydropyridine calcium antagonists, lacidipine exhibits a greater antioxidant activity which may confer potentially beneficial antiatherosclerotic effects . Lacidipine is a highly lipophilic molecule that interacts with the biological membranes. Through radiotracer analysis, it was determined that lacidipine displays a high membrane partition coefficient leading to accumulation of the drug in the membrane and slow rate of membrane washout . When visualized by small-angle X-ray diffraction with angstrom resolution to examine its location within the membranes, lacidipine was found deep within the membrane's hydrocarbon core . These results may explain the long clinical half-life of lacidipine . In randomised, well-controlled trials, administration of daily single-dose lacidipine ranging from 2-6 mg demonstrated comparable antihypertensive efficacy similar to that of other long-acting dihydropyridine calcium antagonists, thiazide diuretics, atenolol (a beta-blocker) and enalapril (an ACE inhibitor) . It is available as once-daily oral tablets containing 2 or 4 mg of the active compound commonly marketed as Lacipil or Motens. It is not currently FDA-approved.
CAS Number: 103890-78-4
Molecular Weight: 455.551
DrugBank Indication: Indicated for the treatment of hypertension either alone or in combination with other antihypertensive agents, including β-adrenoceptor antagonists, diuretics, and ACE-inhibitors .
DrugBank Pharmacology: acidipine is a specific and potent calcium antagonist with a predominant selectivity for calcium channels in the vascular smooth muscle. Its main action is to dilate predominantly peripheral and coronary arteries, reducing peripheral vascular resistance and lowering blood pressure . Following the oral administration of 4 mg lacidipine to volunteer subjects, a minimal prolongation of QTc interval has been observed (mean QTcF increase between 3.44 and 9.60 ms in young and elderly volunteers) .
DrugBank MoA: By blocking the voltage-dependent L-type calcium channels, it prevents the transmembrane calcium influx . Normally, calcium ions serve as intracellular messengers or activators in exictable cells including vascular smooth muscles. The influx of calcium ultimately causes the excitation and depolarization of the tissues. Lacidipine inhibits the contractile function in the vascular smooth muscle and reduce blood pressure. Due to its high membrane partition coefficient, some studies suggest that lacidipine may reach the receptor via a two-step process; it first binds and accumulates in the membrane lipid bilayer and then diffuses within the membrane to the calcium channel receptor . It is proposed that lacidipine preferentially blocks the inactivated state of the calcium channel . Through its antioxidant properties shared amongst other dihydropyridine calcium channel blockers, lacidipine demonstrates an additional clinical benefit. Its antiatherosclerotic effects are mediated by suppressing the formation of reactive oxygen species (ROS) and subsequent inflammatory actions by chemokines, cytokines and adhesion molecules, thus reducing atherosclerotic lesion formation . Lacidipine may also suppress cell proliferation and migration in smooth muscle cells and suppress the expression of matrix metalloproteinases, which affects the stability of atheromatous plaques .
Targets: Voltage-dependent L-type calcium channel antagonist
Inclusion Criteria: Therapeutic strategy associated