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Differences in Abnormal Water Metabolism between SD Rats and KM Mice Intoxicated by Microcystin-RR

Author

Listed:
  • Wenqing Xiao

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

  • Qing Zhong

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

  • Feng Sun

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

  • Weiguang Wang

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

  • Zhiyao Zhao

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

  • Kangding Gu

    (MOE Key Lab of Environment and Health, Institute of Environmental Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China)

Abstract

The effects of microcystin-RR (MC-RR) on water metabolism were studied on Sprague–Dawley (SD) rats and KunMing (KM) mice. In the single dose toxicity test, polydipsia, polyuria, hematuria and proteinuria were found in group of rats receiving a MC-RR dose of 574.7 μg/kg, and could be relieved by dexamethasone (DXM). Gradient damage was observed in kidney and liver in rats with gradient MC-RR doses of 574.7, 287.3, and 143.7 μg/kg. No significant water metabolic changes or kidney injuries were observed in mice treated with MC-RR doses of 210.0, 105.0, and 52.5 μg/kg. In the continuous exposure test, in which mice were administrated with 140.0, 70.0, and 35.0 μg/kg MC-RR for 28 days, mice in the 140.0 μg/kg group presented increasing polydipsia, polyuria, and liver damage. However, no anatomic or histological changes, including related serological and urinary indices, were found in the kidney. In summary, abnormal water metabolism can be induced by MC-RR in rats through kidney injury in single dose exposure; the kidney of SD rats is more sensitive to MC-RR than that of KM mouse; and polydipsia and polyuria in mice exposed to MC-RR for 28 days occurred but could not be attributed to kidney damage.

Suggested Citation

  • Wenqing Xiao & Qing Zhong & Feng Sun & Weiguang Wang & Zhiyao Zhao & Kangding Gu, 2021. "Differences in Abnormal Water Metabolism between SD Rats and KM Mice Intoxicated by Microcystin-RR," IJERPH, MDPI, vol. 18(4), pages 1-22, February.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:4:p:1900-:d:500236
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    References listed on IDEAS

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    1. Xiping Yi & Shuaishuai Xu & Feiyu Huang & Cong Wen & Shuilin Zheng & Hai Feng & Jian Guo & Jihua Chen & Xiangling Feng & Fei Yang, 2019. "Effects of Chronic Exposure to Microcystin-LR on Kidney in Mice," IJERPH, MDPI, vol. 16(24), pages 1-11, December.
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