数字农科院2.0

Long-term exposure to the fluoride blocks the development of chondrocytes in the ducks: The molecular mechanism of fluoride regulating autophagy and apoptosis

文献类型： 外文期刊

作者： Wang Yajing;Li Aoyun;Mehmood Khalid;Hussain Riaz;Abbas Rao Zahid;Javed M. Tariq;Chang Yung-Fu;Hu Lianmei;Pan Jiaqiang;Li Ying;Shi Lijun;Tang Zhaoxin;Zhang Hui

作者机构：

关键词： Apoptosis; Autophagy; Chondrocyte; Fluorosis; Tibial bone

期刊名称： Ecotoxicology and Environmental Safety

ISSN： 0147-6513

年卷期： 2021 年 217 卷

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收录情况： JCR（2021版）

摘要： Long-term exposure to excessive fluoride causes chronic damage in the body tissues and could lead to skeletal and dental fluorosis. Cartilage damage caused by excessive fluoride intake has gained wide attention, but how fluoride accumulation blocks the development of chondrocytes is still unclear. Here, we report a negative correlation between the length and growth plate width after NaF treatments via apoptosis and autophagy, with shrinkage of cells, nuclear retraction, dissolution of chondrocytes. Whereas, fluoride exposure had no significant effect on the number and distribution of the osteoclasts which were well aligned. More importantly, fluoride exposure induced apoptosis of tibial bone through CytC/Bcl-2/P53 pathways via targeting Caspase3, Caspase9, Bak1, and Bax expressions. Meanwhile, the Beclin1, mTOR, Pakin, Pink, and p62 were elevated in NaF treatment group, which indicated that long-term excessive fluoride triggered the autophagy in the tibial bone and produced the chondrocyte injury. Altogether, fluoride exposure induced the chondrocyte injury by regulating the autophagy and apoptosis in the tibial bone of ducks, which demonstrates that fluoride exposure is a risk factor for cartilage development. These findings revealed the essential role of CytC/Bcl-2/P53 pathways in long-term exposure to fluoride pollution and block the development of chondrocytes in ducks, and CytC/Bcl-2/P53 can be targeted to prevent fluoride induced chondrocyte injury. © 2021

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