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Published in: Cardiovascular Toxicology 1/2016

01-01-2016

The Effects of Nandrolone Decanoate Along with Prolonged Low-Intensity Exercise on Susceptibility to Ventricular Arrhythmias

Authors: Fateme Binayi, Siyavash Joukar, Hamid Najafipour, Ali Karimi, Farzane Abdollahi, Yaser Masumi

Published in: Cardiovascular Toxicology | Issue 1/2016

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Abstract

We examined the influence of chronic administration of nandrolone decanoate with low-intensity endurance swimming exercise on susceptibility to lethal ventricular arrhythmias in rat. The animal groups included the control group, exercise group (EX), nandrolone group (Nan), vehicle group (Arach), trained vehicle group (Arach + Ex) and trained nandrolone group (Nan + Ex) that treated for 8 weeks. Then, arrhythmia induction was performed by intravenous infusion of aconitine and electrocardiogram recorded. Then, malondialdehyde (MDA), hydroxyproline (HYP) and glutathione peroxidase of heart tissue were measured. Chronic administration of nandrolone with low-intensity endurance swimming exercise had no significant effect on blood pressure, heart rate and basal ECG parameters except RR interval that showed increase (P < 0.05). Low-intensity exercise could prevent the incremental effect of nandrolone on MDA and HYP significantly. It also increased the heart hypertrophy index (P < 0.05) and reduced the abating effect of nandrolone on animal weighting. Nandrolone along with exercise significantly increased the duration of VF (P < 0.05) and reduced the VF latency (P < 0.05). The findings suggest that chronic co-administration of nandrolone with low-intensity endurance swimming exercise to some extent facilitates the occurrence of ventricular fibrillation in rat. Complementary studies are needed to elucidate the involved mechanisms of this abnormality.
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Metadata
Title
The Effects of Nandrolone Decanoate Along with Prolonged Low-Intensity Exercise on Susceptibility to Ventricular Arrhythmias
Authors
Fateme Binayi
Siyavash Joukar
Hamid Najafipour
Ali Karimi
Farzane Abdollahi
Yaser Masumi
Publication date
01-01-2016
Publisher
Springer US
Published in
Cardiovascular Toxicology / Issue 1/2016
Print ISSN: 1530-7905
Electronic ISSN: 1559-0259
DOI
https://doi.org/10.1007/s12012-015-9313-3

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