Materials：银纳米粒子长期口服给药后或可损害神经系统

2018-05-16 MedSci MedSci原创

银纳米粒子已经广泛用于照明和食品、医药和制药学中的防腐剂。最近的研究表明，长时间口服后，银纳米颗粒或可穿过血脑屏障积累在脑中。体外实验也显示银纳米颗粒具有神经毒性。本研究旨在探究银纳米粒子若积聚在大脑中，是否会延长哺乳动物的认知和行为功能。研究选用C57Bl/6雄性小鼠，每天口服PVP包被的银纳米颗粒30、60、120和180天。对照小鼠口服蒸馏水。之后对小鼠进行开放领域、高架迷宫、光暗箱

银纳米粒子已经广泛用于照明和食品、医药和制药学中的防腐剂。最近的研究表明，长时间口服后，银纳米颗粒或可穿过血脑屏障积累在脑中。体外实验也显示银纳米颗粒具有神经毒性。本研究旨在探究银纳米粒子若积聚在大脑中，是否会延长哺乳动物的认知和行为功能。

研究选用C57Bl/6雄性小鼠，每天口服PVP包被的银纳米颗粒30、60、120和180天。对照小鼠口服蒸馏水。之后对小鼠进行开放领域、高架迷宫、光暗箱和情景恐惧条件任务中进行测试。

结果显示，实验小鼠经历了由适应有毒银纳米粒子引起的行为转变的三个时期：焦虑，研究本能的出现和长期记忆的损害。

综上所述，该研究结果提供了关于银纳米粒子长期口服给药后出现危险效应的证据。

原始出处：

Anna Antsiferova, Marina Kopaeva, et al., Effects of Prolonged Silver Nanoparticle Exposure on the Contextual Cognition and Behavior of Mammals. Materials (Basel). 2018 Apr; 11(4): 558. doi: 10.3390/ma11040558

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2019-03-27 ms1292405679162969

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2018-10-22 zjubiostat

#纳米粒#

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2018-05-18 luoxiaog

#神经系统#

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2018-05-18 ms920641618706883

#纳米粒子#

92 0
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2018-05-17 飛歌

学习了很有用

112 0
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2018-05-17 1209e435m98(暂无昵称)

学习了.谢谢分享

83 0
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2018-05-17 1dd8c52fm63(暂无匿称)

了解了解.继续关注

112 0
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2018-05-17 yjs木玉

学习学习再学习

0 0

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Materials：银纳米粒子长期口服给药后或可损害神经系统

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