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Effects of Rare Earth Elements on Blood Pressure and Their Exposure Biomarkers: Evidence from Animal Experiments

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  • Yiming Pang

    (Key Laboratory of Reproductive Health, National Health Commission of the People’s Republic of China, Institute of Reproductive and Child Health, Peking University, Beijing 100191, China
    Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China)

  • Jianjun Jiang

    (Department of Toxicology, School of Public Health, Peking University, Beijing 100191, China)

  • Kexin Li

    (Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China)

  • Lailai Yan

    (Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing 100191, China)

  • Yanqiu Feng

    (Key Laboratory of Reproductive Health, National Health Commission of the People’s Republic of China, Institute of Reproductive and Child Health, Peking University, Beijing 100191, China
    Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China)

  • Junli Wang

    (Basic Clinical Laboratory Teaching and Research Department, School of Medical Laboratory, Youjiang Medical University for Nationalities, Baise 533000, China)

  • Xiaolu Cao

    (Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Department of Environmental Health and Occupational Medicine, School of Public Health, Wuhan University of Science and Technology, Wuhan 430081, China)

  • Zhiwen Li

    (Key Laboratory of Reproductive Health, National Health Commission of the People’s Republic of China, Institute of Reproductive and Child Health, Peking University, Beijing 100191, China
    Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China)

  • Bin Wang

    (Key Laboratory of Reproductive Health, National Health Commission of the People’s Republic of China, Institute of Reproductive and Child Health, Peking University, Beijing 100191, China
    Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China)

Abstract

Solid fuel combustion is an important source of the release of rare earth elements ( REEs ) into the ambient environment, resulting in potential adverse effects on human cardiovascular health. Our study aimed to identify reliable exposure biomarkers of REE intake and their potential role in blood pressure change. A total of 24 rats were administered with 14 REE chlorides at four doses (six rats per group). Fur samples were collected both before and after administration. Blood samples were collected after 12 weeks of REE intake. The REE concentrations in rat fur and blood samples were measured by inductively coupled plasma mass spectrometry. For each week, blood pressure, as well as heart rate and pulse pressure, were measured. The linear mixed-effect model was used to analyze the relationship between REE administration dose and blood pressure change. We found that the REE concentration in fur, but not blood, samples exhibited significant dose–response relationships with administration dose. It suggested that hair samples are a more efficient matrix for indicating the exposure level of a population to REEs than blood samples. However, there was no dose–response relationships between the administration dose and blood pressure change of rats, or with heart rate and pulse pressure for the 14 REEs . We also did not find a dose–response relationship between REE administration levels and plasma concentration of 8-hydroxy-2’-deoxyguanosine, as an important DNA oxidative stress damage biomarker. In conclusion, hair samples are more suitable as a sample type to reliably assess exposure to REEs than blood samples, and REEs did not have a direct adverse effect on blood pressure in our rat model.

Suggested Citation

  • Yiming Pang & Jianjun Jiang & Kexin Li & Lailai Yan & Yanqiu Feng & Junli Wang & Xiaolu Cao & Zhiwen Li & Bin Wang, 2021. "Effects of Rare Earth Elements on Blood Pressure and Their Exposure Biomarkers: Evidence from Animal Experiments," IJERPH, MDPI, vol. 18(18), pages 1-12, September.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:18:p:9836-:d:638530
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    References listed on IDEAS

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    1. Bing Cao & Jing Wu & Changlian Xu & Yan Chen & Qing Xie & Li Ouyang & Jingyu Wang, 2020. "The Accumulation and Metabolism Characteristics of Rare Earth Elements in Sprague–Dawley Rats," IJERPH, MDPI, vol. 17(4), pages 1-11, February.
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    Cited by:

    1. Wei Du & Long Chen & Yuanchen Chen, 2022. "Solid Fuel Combustion and Air Pollution: Filling the Data Gap and Future Priorities," IJERPH, MDPI, vol. 19(22), pages 1-3, November.

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