Acecainide (hydrochloride)
(Synonyms: N-盐酸乙酰普鲁卡胺) 目录号 : GC42690An active metabolite of procainamide
Cas No.:34118-92-8
Sample solution is provided at 25 µL, 10mM.
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Acecainide is an active metabolite of the class III antiarrhythmic procainamide. It is formed from procainamide via hepatic N-acetyltransferases. Acecainide prevents hypoxia-induced ventricular fibrillation in mice and decreases arrhythmia induced by aconitine in dogs. Acecainide (10 µM), when used in high-fat medium, decreases lipid droplet area by greater than 50% in SK-Hep1 cells without inducing cytotoxicity but does not affect lipid droplets in primary mouse hepatocytes.
Cas No. | 34118-92-8 | SDF | |
别名 | N-盐酸乙酰普鲁卡胺 | ||
Canonical SMILES | CC(NC1=CC=C(C(NCCN(CC)CC)=O)C=C1)=O.Cl | ||
分子式 | C15H23N3O2•HCl | 分子量 | 313.8 |
溶解度 | DMF: 20 mg/ml,DMSO: 14 mg/ml,Ethanol: 16 mg/ml,PBS (pH 7.2): 10 mg/ml | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 3.1867 mL | 15.9337 mL | 31.8674 mL |
5 mM | 0.6373 mL | 3.1867 mL | 6.3735 mL |
10 mM | 0.3187 mL | 1.5934 mL | 3.1867 mL |
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Analysis of procainamide hydrochloride and Acecainide hydrochloride in rat feed
J Pharm Sci 1980 Dec;69(12):1439-40.PMID:6162025DOI:10.1002/jps.2600691224.
An extraction and GLC assay procedure was developed for quantitation of procainamide hydrochloride and Acecainide hydrochloride in rat feed. 4-Amino-N-[2-(dipropylamino)ethyl]benzamide hydrochloride was synthesized and utilized as an internal standard. The assay has good precision and accuracy and was used to establish the stability of Acecainide hydrochloride and procainamide hydrochloride in rat feed.
Acecainide (N-acetylprocainamide). A review of its pharmacodynamic and pharmacokinetic properties, and therapeutic potential in cardiac arrhythmias
Drugs 1990 May;39(5):720-40.PMID:1693889DOI:10.2165/00003495-199039050-00007.
Acecainide (N-acetylprocainamide), the N-acetylated metabolite of procainamide, is a Class III antiarrhythmic agent. It can be given either intravenously or orally, and is eliminated primarily by renal excretion. In a small number of noncomparative and placebo-controlled short term therapeutic trials Acecainide markedly reduced premature ventricular beats and prevented induction of ventricular tachycardia in more than 70% of patients following intravenous administration and in about 50% after oral administration. Acecainide was effective in about one-quarter of patients refractory to other antiarrhythmic drugs. Interpretation of its effectiveness following long term oral therapy is complicated by the limited number of patients, and patients discontinuing due to adverse effects or lack of efficacy. However, about 40% of the small number treated for extended periods were controlled for periods of 6 months to 3 to 4 years. Comparative studies with other antiarrhythmic drugs have not been undertaken apart from a small study in atrial flutter where Acecainide was better than quinidine plus digoxin. Thus, although further clinical experience is required before the relative place of Acecainide in therapy can be determined, the drug nevertheless appears to offer advantages over procainamide, particularly with respect to the reduced formation of antinuclear antibodies.
Acecainide pharmacokinetics in normal subjects of known acetylator phenotype
Biopharm Drug Dispos 1991 Nov;12(8):599-612.PMID:1724922DOI:10.1002/bdd.2510120806.
The purpose of this study was to determine the pharmacokinetics of Acecainide (formerly N-acetylprocainamide) in six normal subjects of known acetylator phenotype. Three subjects were fast acetylators and three slow acetylators by sulfapyridine phenotyping criteria. Each subject received a 20-min, 3 mg kg-1 intravenous Acecainide infusion. Concentrations of Acecainide, procainamide, and their deethylated metabolites were measured in serum and urine samples using HPLC. Acecainide renal clearance, nonrenal clearance, steady-state volume of distribution, and other pharmacokinetic parameters were estimated using standard approaches. Acecainide renal clearance and steady-state volume of distribution were (mean +/- SD) 13.6 +/- 1.581 h-1 and 135 +/- 20.31, respectively, and were not significantly different in fast and slow acetylators. Acecainide nonrenal clearance in the six subjects was 3.0 +/- 1.01 h-1; however, nonrenal clearance in slow acetylators was 1.8 times that in fast acetylators (3.9 vs 2.21 h-1, p = 0.012) with clear separation of the subjects into two groups when the data were grouped by acetylator phenotype. The nonrenal clearance of Acecainide was inversely correlated with percentage sulfapyridine acetylation. Computer simulations were conducted to explore possible explanations for the observed difference in nonrenal clearance.
Antiarrhythmic efficacy, pharmacokinetics and safety of N-acetylprocainamide in human subjects: comparison with procainamide
Am J Cardiol 1980 Sep;46(3):463-8.PMID:6158263DOI:10.1016/0002-9149(80)90016-8.
The antiarrhythmic efficacy and pharmacokinetics of N-acetylprocainamide (NAPA), the major metabolite of procainamide, were investigated in 23 patients with chronic, high frequency ventricular ectopic depolarizations. An extensive trial design incorporated the approaches of (1) generation of dose-response relations, (2) randomized crossover, and (3) prolonged electrocardiographic monitoring. Seven patients with reproducible suppression of arrhythmias (70 percent or greater reduction in frequency) were thus identified. The mean plasma concentration of Acecainide associated with efficacy was 14.3 micrograms/ml (range 9.4 to 19.5) and with side effects (primarily gastrointestinal) was 22.5 micrograms/ml (10.6 to 37.9). The antiarrhythmic response to procainamide did not predict response to Acecainide; this finding implies that estimates of the antiarrhythmic contribution of Acecainide concentrations achieved during long-term procainamide therapy are unlikely to be meaningful in a given person. The mean half-life of elimination after a single 500 mg dose of Acecainide was 7.5 hours; this had prolonged significantly (p < 0.05) to 10.3 hours after higher dosages. No variable examined (including acetylator phenotype) was found to be a predictor of responsiveness to Acecainide. Outpatient therapy (2 to 20 months) was not associated with the development of antinculear antibodies or the lupus syndrome; one patient's procainamide-induced arthritis resolved during therapy. Acecainide, unlike procainamide, is an agent whose pharmacokinetics allow long-term therapy on a practical schedule. It is effective in a subset of patients with ventricular arrhythmias yet appears much less likely to induce the lupus syndrome seen with the parent compound.
Poisoning due to class IA antiarrhythmic drugs. Quinidine, procainamide and disopyramide
Drug Saf 1990 Nov-Dec;5(6):393-420.PMID:2285495DOI:10.2165/00002018-199005060-00002.
Quinidine, procainamide and disopyramide are antiarrhythmic drugs in the class 1A category. These drugs have a low toxic to therapeutic ratio, and their use is associated with a number of serious adverse effects during long term therapy and life-threatening sequelae following acute overdose. Class 1A agents inhibit the fast inward sodium current and decrease the maximum rate of rise and amplitude of the cardiac action potential. Prolonged Q-T interval and, to a lesser extent, QRS duration may be observed at therapeutic concentrations of quinidine. With increasing plasma concentrations, progressive depression of automaticity and conduction velocity occur. 'Quinidine syncope' (a transient loss of consciousness due to paroxysmal ventricular tachycardia, frequently of the torsade de pointes type) occurs with therapeutic dosing, often in the first few days of therapy. Extracardiac adverse effects of quinidine include potentially intolerable gastrointestinal effects and hypersensitivity reactions such as fever, rash, blood dyscrasias and hepatitis. Procainamide produces electrophysiological changes that are similar to those of quinidine, although Q-T interval prolongation with the former is less pronounced at therapeutic concentrations. Hypersensitivity reactions including fever, rash and (more seriously) agranulocytosis are associated with procainamide, and a frequent adverse effect requiring cessation of therapy is the development of systemic lupus erythematosus. Of the 3 drugs, disopyramide has the most pronounced negative inotropic effects, which are especially significant in patients with pre-existing left ventricular dysfunction. As with quinidine, unexpected 'disopyramide syncope' at therapeutic concentrations has been described. Anticholinergic side effects are common with this drug and may require cessation of therapy. Disopyramide therapy may unpredictably induce severe hypoglycaemia. Severe intoxication with the class 1A agents may result from acute accidental or intentional overdose, or from accumulation of the drugs during long term therapy. Acute overdose can result in severe disturbances of cardiac conduction and hypotension, frequently accompanied by central nervous system toxicity. Decreased renal function can cause significant accumulation of procainamide and its active metabolite Acecainide (N-acetyl-procainamide), resulting in severe intoxication. Mild to moderate renal dysfunction is less likely to lead to quinidine or disopyramide intoxication, unless renal failure is severe or concurrent hepatic dysfunction is present. Management of acute intoxication with class 1A drugs includes gut decontamination with provision of respiratory support and treatment of seizures as needed. Hypertonic sodium bicarbonate, by antagonising the inhibitory effect of quinidine on sodium conductance, may reverse many or all manifestations of cardiovascular toxicity.(ABSTRACT TRUNCATED AT 400 WORDS)