Evaluation of ECG time intervals in a rabbit model of anthracycline-induced cardiomyopathy: a useful tool for assessment of cardioprotective agents

Title:

Evaluation of ECG time intervals in a rabbit model of anthracycline-induced cardiomyopathy: a useful tool for assessment of cardioprotective agents

Creator:

Anna Potáčová, Michaela Adamcová, Čajnáková, H., Hrbatová, L., Martin Štěrba, Popelová, O., Tomáš Šimůnek, Přemysl Poňka, and Vladimír Geršl

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:daf4c6aa-7c8a-4a22-a41c-0a087aa49550
uuid:daf4c6aa-7c8a-4a22-a41c-0a087aa49550
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie, troponiny, physiology, troponins, chelátor železa, ECG, troponin T, iron chelator, anthracyclines, daunorubicin, dexrazoxane, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

The aim of this study was to analyze the ECG time intervals in the course of the development of chronic anthracycline cardiomyopathy in rabbits. Furthermore, this approach was employed to study the effects of a model cardioprotective drug (dexrazoxane) and two novel iron chelating compounds - salicylaldehyde isonicotinoyl hydrazone (SIH) and pyridoxal 2-chlorobenzoyl hydrazone (o-108). Repeated daunorubicin administration induced a significant and progressive prolongation of the QRS complex commencing with the 8th week of administration. At the end of the study, we identified a significant correlation between QRS duration and the contractility index dP/dtmax (r=-0.81; P<0.001) as well as with the plasma concentrations of cardiac troponin T (r=0.78; P<0.001). In contrast, no alterations in ECG time intervals were revealed in the groups co-treated with either dexrazoxane or both novel cardioprotective drugs (SIH, o-108). Hence, in this study, the QRS duration is for the first time shown as a parameter suitable for the non-invasive evaluation of the anthracycline cardiotoxicity and cardioprotective effects of both well established and investigated drugs. Moreover, our results strongly suggest that novel iron chelators (SIH and o-108) merit further study as promising cardioprotective drugs against anthracycline cardiotoxicity., A. Potáčová, M. Adamcová, H. Čajnáková, L. Hrbatová, M. Štěrba, O. Popelová, T. Šimůnek, P. Poňka, V. Geršl., and Obsahuje bibliografii a bibliografické odkazy

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2007 Volume:56 | Number:2

Harvested from:

CDK

Metadata only:

false