On the Mechanisms of the Cardiotoxic Effect of Lead Oxide Nanoparticles
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Published:2023-12-18
Issue:1
Volume:24
Page:49-61
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ISSN:1530-7905
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Container-title:Cardiovascular Toxicology
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language:en
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Short-container-title:Cardiovasc Toxicol
Author:
Minigaliyeva Ilzira A.ORCID, Klinova Svetlana V.ORCID, Sutunkova Marina P.ORCID, Ryabova Yuliya V.ORCID, Valamina Irene E.ORCID, Shelomentsev Ivan G.ORCID, Shtin Tatiana N.ORCID, Bushueva Tatiana V.ORCID, Protsenko Yuri L.ORCID, Balakin Alexander A.ORCID, Lisin Ruslan V.ORCID, Kuznetsov Daniil A.ORCID, Katsnelson Boris A.ORCID, Toropova Liubov V.ORCID
Abstract
AbstractLead compounds are one of the most common pollutants of the workplace air and the environment. In the occupational setting, the sources of their emission, including in nanoscale form, are various technological processes associated with lead smelting and handling of non-ferrous metals and their alloys, the production of copper and batteries. Both lead poisoning and lead exposure without obvious signs of poisoning have a detrimental effect on the cardiovascular system. The purpose of this research was to investigate the mechanisms of the cardiotoxic effect of lead oxide nanoparticles (PbO NPs). The toxicological experiment involved male albino rats subchronically exposed to PbO NPs (49.6 ± 16.0 nm in size) instilled intraperitoneally in a suspension. We then assessed post-exposure hematological and biochemical parameters of blood and urine, histological and ultrastructural changes in cardiomyocytes, and non-invasively recorded electrocardiograms and blood pressure parameters in the rodents. Myocardial contractility was studied on isolated preparations of cardiac muscles. We established that PbO NPs induced oxidative stress and damage to the ultrastructure of cardiomyocytes, and decreased efficiency of the contractile function of the myocardium and blood pressure parameters. We also revealed such specific changes in the organism of the exposed rats as anemia, hypoxia, and hypocalcemia.
Graphical Abstract
Funder
Ministry of Science and Higher Education of the Russian Federation Friedrich-Schiller-Universität Jena
Publisher
Springer Science and Business Media LLC
Subject
Cardiology and Cardiovascular Medicine,Toxicology,Molecular Biology
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