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KMID : 1034820190150020153
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Molecular & Cellular Toxicology
2019 Volume.15 No. 2 p.153 ~ p.161
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Malnutrition worsens fluorosis-induced damage in hypothalamic-pituitary-ovarian axis of rats
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Liu Yongmei
Li Ling
Xu Jingfeng
Yu Siwen
Wang Shijun
Yu Maojuan
Zou Wenbing
Cheng Mingliang
Xia Shuhua
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Abstract
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Backgrounds: This study aimed to evaluate the effects of malnutrition on the hypothalamic-pituitary-ovarian axis (HPOA) sex hormones in female rats with coal burning-type fluorosis.
Methods: Female rats were divided into four groups: control, malnutrition, fluorosis, and fluorosis with malnutrition. Rats in the control and malnutrition groups were fed pollution-free corn with either regular or low protein content. Rats in the fluorosis and fluorosis with malnutrition groups were fed corn roasted with coals from the fluorosis endemic areas of Zhijin, China,with either regular or low protein content.
Results: Results revealed that the body weight of rats with protein malnutrition was significantly reduced compared with that of the control and fluorosis rats. Urinary fluoride was significantly decreased and bone fluoride was significantly increased in the fluorosis with malnutrition group compared to the fluorosis group. Moreover, protein malnutrition significantly enhanced the effect of fluoride on gonadotropin-releasing hormone, follicle-stimulating hormone, luteinizing hormone, and testosterone. Histological and ultrastructural analyses revealed that protein malnutrition intensified fluoride-induced ovary damage.
Conclusion: Malnourishment could promote the abnormal secretion of HPOA sex hormones in females with fluorosis.
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KEYWORD
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Low-protein, Coal-burning fluorosis, Female, HPOA, Sex hormone
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