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:: Volume 22, Number 2 (Spring 2016) ::
Horizon Med Sci 2016, 22(2): 117-123 Back to browse issues page
Determining Certain Cardiac Electrophysiological and Biochemical Parameters Following Long-Term Exposure to Sound Pollutions in Male Rats
Samad Nazemi1, Akbar Pejhan2, Hassan Azhdari-Zarmehri3, Mohammad Shafi Mojadadi *4
1- Assistant Professor “Cellular and Molecular Research Center” and “Department of Physiology & Pharmacology, Faculty of Medicine”, Sabzevar University of Medical Sciences, Sabzevar, Iran
2- Associate Professor “Cellular and Molecular Research Center” and “Department of Physiology & Pharmacology, Faculty of Medicine”, Sabzevar University of Medical Sciences, Sabzevar, Iran
3- Assistant Professor Department of Basic Sciences, Faculty of Medical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
4- Assistant Professor Department of Immunology, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran , mojadadi@gmail.com
Abstract:   (1129 Views)

Aims: Cardio-vascular diseases are of the most important health and treatment problems in the recent industrialized societies. The conducted studies show that noise and vibrations, as types of pollution, are risk factors for the cardio-vascular diseases. The aim of this study was to investigate the effects of short-term and long-term facing with noise pollution on some heart biochemical and electrophysiological parameters in the rats. 

Materials & Methods: In the experimental study, 60 male Wistar rats were randomly divided into two experimental groups including short-term (one-day facing) and long-term (30-day facing). And each one included one control group and three experimental groups (4-, 8-, and 12-hour noise facing). At last, different electrophysiological parameters of heart function were investigated via recorded electrocardiograms. The levels of creatine phosphokinase and troponin I enzymes were measured, to investigate myocardial injury. Data was analyzed by SPSS 21 software using One-way ANOVA and Tukey’s post-hoc tests.   

Findings: Short-term (4-hour) facing with noise pollution only led to a reduction in PR interval (p<0.05). Long term (8- and 12-hour) facing with noise pollution considerably reduced PR, QT, and QTc wave intervals, while increased QRS complex voltage (p<0.05). Short-tem (4-hour) and long-term (8 to 12-hour) facing led to an increase in the heart rate (p<0.05). There was no significant difference in the serum level of creatine phosphokinase and troponin I enzymes between different groups. 

Conclusion: Through changes in the hemodynamic factors, continuous facing with noise pollution can increase heart rate and function in the rats.

Keywords: Noise, Electrocardiography, Heart rate, Creatine Kinase, Troponin I, Rats
Full-Text [PDF 573 kb]   (343 Downloads)    
Type of Study: Original | Subject: Physiology
Received: 2015/05/30 | Accepted: 2015/12/20 | Published: 2016/02/17
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DOI: 10.18869/acadpub.hms.22.2.117


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Nazemi S, Pejhan A, Azhdari-Zarmehri H, Mojadadi M S. Determining Certain Cardiac Electrophysiological and Biochemical Parameters Following Long-Term Exposure to Sound Pollutions in Male Rats. Horizon Med Sci . 2016; 22 (2) :117-123
URL: http://hms.gmu.ac.ir/article-1-2218-en.html
Volume 22, Number 2 (Spring 2016) Back to browse issues page
مجله علمی پژوهشی افق دانش The Horizon of Medical Sciences
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