具有不同功能组和电荷的聚乙烯纳米塑料对2型糖尿病有不同的影响
Yunyi Wang1, Ke Xu1, Xiao Gao1
1Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, 430079, Wuhan, Hubei, China.
纳米塑料 (NP) 暴露,特别是氨基基基改性纳米塑料,可以通过影响血糖和胰岛素抵抗,在小鼠中诱导类似2型糖尿病 (T2DM) 的症状. 这凸显了与纳米塑料污染相关的健康风险.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 内分泌学 在内分泌学.
背景情况:
- 纳米塑料 (NP) 的污染对环境和健康构成风险.
- 具有不同电荷和功能组的NP对哺乳动物血糖和糖尿病风险的影响在很大程度上是未知的.
研究的目的:
- 研究聚烯纳米塑料 (PS-NP) 与不同功能组对葡萄糖代谢和胰岛素抵抗的影响.
- 探索纳米塑料诱导的类似糖尿病病变的潜在机制.
主要方法:
- 小鼠被暴露在PS-NP (普里斯,COOH,NH2修饰) 中九周,单独或在2型糖尿病 (T2DM) 模型中.
- 评估了关键的代谢参数,包括禁食血糖 (FBG),葡萄糖耐受性和胰岛素耐药性.
- 研究人员检查了胰腺和肝脏组织的病理变化,并分析了分子通路 (AKT/FoxO1).
主要成果:
- 在小鼠中,PS-NPs暴露增加了FBG,诱导了葡萄糖不耐受性和胰岛素耐药性.
- 氨基基基改性PS-NPs (PS-NPs-NH2) 显示出最严重的T2DM类效应,包括显著的FBG增加和胰岛素抵抗.
- 暴露于PS-NPs抑制了AKT和FoxO1酸化,导致糖原积累和胰腺损伤;AKT激活剂SC79挽救了这些影响.
结论:
- 暴露于功能化的PS-NP可以诱导哺乳动物T2DM类病变.
- 氨基基基改性PS-NP与原始或碳素基改性NP相比,对T2DM发展的风险更大.
- 抑制AKT/FoxO1通路是纳米塑料诱导糖尿病的关键机制,强调了塑料污染对健康的风险.
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