title: [Lack of effectiveness of coenzyme Q10 (ubiquinone) in long-term treatment of dilated cardiomyopathy].
abstract: In a chronic, placebo-controlled, double-blind cross-over study a potential therapeutic effect of coenzyme Q10 (ubiquinone) was investigated in 25 patients suffering from dilative cardiomyopathy (NYHA functional class I, II, III). During a period of four months patients were treated with 3x 33.3 mg of coenzyme Q10 per day, given orally, 15 patients received verum during the first four months and placebo during the following four months (V/P). In the second group of patients (n = 10) the sequence of treatment was reversed (P/V). Therapeutic effect was assessed by means of echocardiogram, chest x-ray, radionuclide ventriculography combined with exercise test and impedance cardiography. Control values for left ventricular function parameters were similar in both groups (left ventricular ejection fraction: 39.5 +/- 11.5% (P/V), 37.6 +/- 17.0% (V/P); left ventricular enddiastolic diameter: 65 +/- 9 mm (P/V), 67 +/- 8 mm (V/P); Cl: 5.1 +/- 1.4 l/min (P/V), 5.1 +/- 1.1 l/min (V/P]. Chronic treatment by coenzyme Q10 did not exhibit any influence on hemodynamic parameters, on the electrocardiogram, on incidence of ventricular arrhythmias, or on exercise tolerance. It was not possible to demonstrate any therapeutic effect of coenzyme Q10 in patients with dilative cardiomyopathy.
authors.affiliation: Technische Universität München, I, Medizinische Klinik.
authors.forename: B
authors.initials: B
authors.lastname: Permanetter
authors.forename: W
authors.initials: W
authors.lastname: Rössy
authors.forename: F
authors.initials: F
authors.lastname: Weingartner
authors.forename: R
authors.initials: R
authors.lastname: Bauer
authors.forename: K F
authors.initials: KF
authors.lastname: Seidl
authors.forename: G
authors.initials: G
authors.lastname: Klein
mesh_terms: D000328:Adult; D000368:Aged; D002311:Cardiomyopathy, Dilated / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005260:Female; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D009205:Myocarditis / Q000150:complications*; D011897:Random Allocation; D014451:Ubiquinone / Q000627:therapeutic use*
chemical_list: D014451:Ubiquinone
vernacular_title: Fehlende Wirksamkeit von Coenzym Q10 (Ubichinon) bei der Langzeitbehandlung der dilatativen Kardiomyopathie.