首页> 外文期刊>RSC Advances >Toxic effects of zinc oxide nanoparticles combined with vitamin C and casein phosphopeptides on gastric epithelium cells and the intestinal absorption of mice
【24h】

Toxic effects of zinc oxide nanoparticles combined with vitamin C and casein phosphopeptides on gastric epithelium cells and the intestinal absorption of mice

机译:氧化锌纳米粒子与维生素C和酪蛋白磷酸肽结合对小鼠胃上皮细胞的毒性和肠道吸收

获取原文
           

摘要

Zinc oxide nanomaterials have become common food additives in recent years. Casein phosphopeptides (CPP) and vitamin C (VC) are used as functional food additives together with ZnO nanoparticles (ZnO NPs) in many commercial foods. Our previous studies showed that VC can increase the cytotoxicity induced by ZnO NPs both in vitro and in vivo , while CPP can have a cytoprotective effect against oxidative stress induced by ZnO NPs. However, the combined toxic effect of the three additives together in food is unknown. Herein, we have investigated the combined toxicity of ZnO NPs, CPP and VC by altering the sequence of their addition to clarify their toxic mechanisms in the composite systems. When the order of addition of the three materials changes, the cytotoxicity induced by the ZnO NPs changes due to the different concentrations of dissolved Zn ions in the different groups. We have also probed the intestinal absorption of Zn ions with an everted gut sac model. The amount of Zn ~(2+) absorbed in the intestine in different composite systems also responds differently to the sequence of addition of the additives. VC is more powerful at controlling the synergistic toxic effect induced by ZnO NPs compared to the protective role of CPP in the combined systems.
机译:近年来,氧化锌纳米材料已成为常见的食品添加剂。酪蛋白磷酸肽(CPP)和维生素C(VC)与许多商业食品中的ZnO纳米颗粒(ZnO NPs)一起用作功能性食品添加剂。我们以前的研究表明,VC可以增加ZnO NPs在体外和体内引起的细胞毒性,而CPP可以对ZnO NPs引起的氧化应激具有细胞保护作用。但是,尚不清楚这三种添加剂在食品中的综合毒性作用。本文中,我们通过改变ZnO NPs,CPP和VC的添加顺序来研究其在复合系统中的毒性机理,从而研究了它们的组合毒性。当三种材料的添加顺序改变时,由于不同组中溶解的锌离子浓度不同,由ZnO NPs诱导的细胞毒性也会改变。我们还研究了肠外翻囊模型对锌离子的肠道吸收。在不同的复合系统中,肠道中吸收的Zn〜(2+)的量对添加剂的添加顺序也有不同的响应。与CPP在组合系统中的保护作用相比,VC在控制ZnO NP诱导的协同毒性作用方面更强大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号