کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5826660 1558892 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cardiovascular pharmacologyLow proarrhythmic potential of citalopram and escitalopram in contrast to haloperidol in an experimental whole-heart model
ترجمه فارسی عنوان
داروی قلبی عروقی: پتانسیل پرواریوتیک سیتالوپرام و اسکلیتوپامام در مقایسه با هالوپریدول در یک مدل کریستالی تجربی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
چکیده انگلیسی

In several case reports proarrhythmic effects of citalopram and escitalopram have been reported. Systematic analyses on prorarrhythmic effects of these drugs are not yet available.The aim of the present study was to investigate if application of citalopram, escitalopram or haloperidol provokes polymorphic ventricular tachycardia in a sensitive model of proarrhythmia.In isolated rabbit hearts monophasic action potentials and ECG showed a significant QT-prolongation after application of citalopram (2 µM: +47 ms, 4 µM: +56ms, P<0.05) accompanied by an increase of action potential duration (APD) but not dispersion of repolarization. Reduced potassium concentration in bradycardic AV-blocked hearts provoked early afterdepolarizations (EAD) in 2 of 12 hearts but no polymorphic ventricular tachycardia (pVT). Application of escitalopram also increased QT-interval (2 µM: +3 ms, 4 µM: +30 ms, P<0.05) and APD without effects on dispersion. 3 of 10 hearts showed EAD and pVT in 2 of 10 hearts (32 episodes).The results were compared to 12 rabbits treated with haloperidol which led to an increase in QT-interval (1 µM:+62 ms; 2 µM:+96ms; P<0.01), APD and dispersion (1 µM:+15 ms, 2 µM:+40 ms; P<0.01) and induced EAD in all 12 and pVT in 10 of 12 hearts (152 episodes).Citalopram and escitalopram demonstrated a rather safe electrophysiologic profile despite significant QT prolongation. In contrast, haloperidol led to significant increase of dispersion of repolarization while this parameter remained stable under the influence of citalopram or escitalopram. These results imply that application of citalopram or escitalopram is not as proarrhythmic as some case reports might suggest while haloperidol is torsadogenic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 788, 5 October 2016, Pages 192-199
نویسندگان
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