Lung deposition and extrapulmonary translocation of nano-ceria after intratracheal instillation
文献类型：期刊论文
| 作者 | He X(何潇) ; Zhang HF(张海凤); Ma YH(马宇辉); Bai W(白伟); Zhang ZY(张智勇); Ding YY(丁雅韵); Zhao YL(赵宇亮); Chai ZF(柴之芳); He, XA; Zhang, HF
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| 刊名 | NANOTECHNOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 21期号:28页码:285103 |
| 通讯作者 | [He, Xiao ; Zhang, Haifeng ; Ma, Yuhui ; Bai, Wei ; Zhang, Zhiyong ; Ding, Yayun ; Zhao, Yuliang ; Chai, Zhifang] Chinese Acad Sci, CAS Key Lab Biomed Effects Nanomat & Nanosafety, CAS Key Lab Nucl Analyt Tech, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhang, Haifeng] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China ; [Lu, Kai] S China Univ Technol, Sch Biol Sci & Engn, Guangzhou 510641, Peoples R China |
| 英文摘要 | The broad potential applications of manufactured nanomaterials call for urgent assessment of their environmental and biological safety. However, most of the previous work focused on the cell level performance; little was known about the consequences of nanomaterial exposure at the whole-body and organ levels. In the present paper, the radiotracer technique was employed to study the pulmonary deposition and the translocation to secondary target organs after ceria nanoparticles (nano-ceria) were intratracheally instilled into Wistar rats. It was found that 63.9 +/- 8.2% of the instilled nano-ceria remained in the lung by 28 d postexposure and the elimination half-life was 103 d. At the end of the test period, only 1/8-1/3 of the daily elimination of nano-ceria from the lung was cleared via the gastrointestinal tract, suggesting that phagocytosis by alveolar macrophages (AMs) with subsequent removal towards the larynx was no longer the predominant route for the elimination of nano-ceria from the lung. The whole-body redistribution of nano-ceria demonstrated that the deposited nano-ceria could penetrate through the alveolar wall into the systemic circulation and accumulate in the extrapulmonary organs. In vitro study suggested that nano-ceria would agglomerate and form sediments in the bronchoalveolar aqueous surrounding while binding to protein would be conducive to the redispersion of nano-ceria. The decrease in the size of agglomerates might enhance the penetration of nano-ceria into the systemic circulation. Our findings suggested that the effect of nanomaterial exposure, even at low concentration, should be assessed because of the potential lung and systemic cumulative toxicity of the nanomaterials. |
| 学科主题 | Science & Technology - Other Topics; Materials Science; Physics |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279259100003 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/241058]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_加速器中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | He X,Zhang HF,Ma YH,et al. Lung deposition and extrapulmonary translocation of nano-ceria after intratracheal instillation[J]. NANOTECHNOLOGY,2010,21(28):285103. |
| APA | 何潇.,张海凤.,马宇辉.,白伟.,张智勇.,...&Chai, ZF.(2010).Lung deposition and extrapulmonary translocation of nano-ceria after intratracheal instillation.NANOTECHNOLOGY,21(28),285103. |
| MLA | 何潇,et al."Lung deposition and extrapulmonary translocation of nano-ceria after intratracheal instillation".NANOTECHNOLOGY 21.28(2010):285103. |
入库方式： OAI收割
来源：高能物理研究所
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