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      Novel pathways of fluoride-induced hepatotoxicity: P53-dependent ferroptosis induced by the SIRT1/FOXOs pathway and Nrf2/HO-1 pathway

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          Abstract

          Fluoride (F) is an environmental pollutant that continues to threaten human health. Long-term or excessive fluoride exposure can cause a series of acute or chronic systemic and organ-specific diseases. The liver is considered to be one of the important target organs of fluoride poisoning, however, the specific cause of liver damage caused by fluoride is still unclear. In the present study, we identified ferroptosis as a key mechanism of fluoride-induced liver injury. Under fluorosis conditions, lipid peroxidation levels in the liver are significantly increased and iron overload is induced. Combined transcriptomic and metabolomic analysis revealed that activation of the SIRT1/FOXOs pathway is one of the main causes of fluorosis-induced liver damage. Further analysis by in vitro experiments showed that the SIRT1/FOXOs pathway can cause the activation of the Nrf2/HO-1 pathway under the condition of fluorosis, and can activate the P53-dependent ferroptosis pathway, leading to the occurrence of lipid peroxidation and iron accumulation, ultimately leading to ferroptosis. Our study provides insight into the mechanism of fluoride-induced liver injury, and our results also provide strategies for treatment to alleviate liver injury caused by fluorosis.

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          Author and article information

          Journal
          Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
          Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
          Elsevier BV
          15320456
          February 2023
          February 2023
          : 264
          : 109526
          Article
          10.1016/j.cbpc.2022.109526
          36455829
          a7b1d438-e77e-4959-bee7-07afd601a87d
          © 2023

          https://www.elsevier.com/tdm/userlicense/1.0/

          https://doi.org/10.15223/policy-017

          https://doi.org/10.15223/policy-037

          https://doi.org/10.15223/policy-012

          https://doi.org/10.15223/policy-029

          https://doi.org/10.15223/policy-004

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