Int J Nanomed:硒可减轻银纳米粒子诱导的肝毒性

2017-11-11 MedSci MedSci原创

近些年来,银纳米粒子(AgNPs)在生物医学和工业应用方面的应用引起了研究人员的极大兴趣。然而,这些纳米颗粒对环境、活组织和生物体存在毒性。硒是人体必需的微量元素,对机体的各种代谢过程具有保护作用,包括抗氧化应激和免疫功能。本研究旨在评估硒对AgNP诱导的肝氧化应激的作用。首先合成AgNPs,然后使用各种分析技术,如紫外可见光谱、特征X射线衍射、透射电子显微镜等对纳米粒子进行表征。然后大鼠腹腔注射

近些年来,银纳米粒子(AgNPs)在生物医学和工业应用方面的应用引起了研究人员的极大兴趣。然而,这些纳米颗粒对环境、活组织和生物体存在毒性。硒是人体必需的微量元素,对机体的各种代谢过程具有保护作用,包括抗氧化应激和免疫功能。本研究旨在评估硒对AgNP诱导的肝氧化应激的作用。

首先合成AgNPs,然后使用各种分析技术,如紫外可见光谱、特征X射线衍射、透射电子显微镜等对纳米粒子进行表征。然后大鼠腹腔注射AgNPs(5毫克/公斤/天),并行硒(0.2毫克/公斤)灌胃。

血清酶标记物谷胱甘肽的水平降低且SOD、CAT和GSH过氧物酶活性降低表明AgNP诱导了肝损伤(P<0.05)。与对照组相比,AgNP治疗组大鼠的总抗氧化能力(TAC)水平降低,C-反应蛋白(CRP)的水平增加。然而,硒可明显减弱AgNP诱导的生化改变,TAC、CRP与血清转氨酶的水平(AST、ALT)(P<0.05)。

总之,这些研究结果表明,AgNP可诱导产生肝毒性,而补硒能减轻这些影响。

原始出处:

Sabah Ansar, Saad M Alshehri, et al., Antioxidant and hepatoprotective role of selenium against silver nanoparticles. Int J Nanomedicine. 2017; 12: 7789–7797. Published online 2017 Oct 24. doi: 10.2147/IJN.S136748

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