Hosseinpour M, Azimirad V, Alimohammadi M, Shahabi P, Sadighi M, Ghamkhari Nejad G. The cardiac effects of carbon nanotubes in rat.
ACTA ACUST UNITED AC 2016;
6:79-84. [PMID:
27525224 PMCID:
PMC4981252 DOI:
10.15171/bi.2016.11]
[Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 06/12/2016] [Accepted: 06/21/2016] [Indexed: 11/09/2022]
Abstract
INTRODUCTION
Carbon nanotubes (CNTs) are novel candidates in nanotechnology with a variety of increasing applications in medicine and biology. Therefore the investigation of nanomaterials' biocompatibility can be an important topic. The aim of present study was to investigate the CNTs impact on cardiac heart rate among rats.
METHODS
Electrocardiogram (ECG) signals were recorded before and after injection of CNTs on a group with six rats. The heart rate variability (HRV) analysis was used for signals analysis. The rhythm-to-rhythm (RR) intervals in HRV method were computed and features of signals in time and frequency domains were extracted before and after injection.
RESULTS
RESULTS of the HRV analysis showed that CNTs increased the heart rate but generally these nanomaterials did not cause serious problem in autonomic nervous system (ANS) normal activities.
CONCLUSION
Injection of CNTs in rats resulted in increase of heart rate. The reason of phenomenon is that multiwall CNTs may block potassium channels. The suppressed and inhibited IK and potassium channels lead to increase of heart rate.
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