期刊
ACS NANO
卷 9, 期 12, 页码 12425-12435出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b05783
关键词
magnetic resonance imaging; contrast agent; iron oxide nanoparticles; toxicity evaluation; endoplasmic reticulum stress; biodistribution
类别
资金
- Research Center Program of the Institute for Basic Science (IBS) in Korea [IBS-R006-D1]
- National Natural Science Foundation of China [51503180, 21477029, 21320102003, 21277037, 21277080]
- Thousand Talents Program for Distinguished Young Scholars [588020*G81501/048]
- Fundamental Research Funds for the Central Universities [520002*172210151]
- Ministry of Science and Technology of China [2011CB933401, 2012CB934003]
- Chinese Academy of Sciences [XDA09040400]
- National Social Science Fund [12ZD117]
- Beijing Key Laboratory of Environmental Toxicology [2015HJDL01]
- National Science Fund for Distinguished Young Scholars [11425520]
Magnetic resonance imaging (MRI) contrast agents with high relaxivity are highly desirable because they can significantly increase the accuracy of diagnosis. However, they can be potentially toxic to the patients. In this study, using a mouse model, we investigate the toxic effects and subsequent tissue damage induced by three T1 MRI contrast agents: gadopentetate dimeglumine injection (01), a clinically used gadolinium (Gd)-based contrast agent (GBCAs), and oxide nanoparticle (NP)-based contrast agents, extremely small-sized iron oxide NPs (ESIONs) and manganese oxide (MnO) NPs. Biodistribution, hematological and histopathological changes, inflammation, and the endoplasmic reticulum (ER) stress responses are evaluated for 24 h after intravenous injection. These thorough assessments of the toxic and stress responses of these agents provide a panoramic description of safety concerns and underlying mechanisms of the toxicity of contrast agents in the body. We demonstrate that ESIONs exhibit fewer adverse effects than the MnO NPs and the clinically used GDI GBCAs, providing useful information on future applications of ESIONs as potentially safe MRI contrast agents.
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