In vivo clearance and toxicity of monodisperse iron oxide nanocrystals.

In vivo clearance and toxicity of monodisperse iron oxide nanocrystals.
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DOI:
10.1021/nn300456z
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发表时间:
2012-06-26
期刊:
影响因子:
17.1
通讯作者:
Park JH
Park JH
中科院分区:
材料科学1区
文献类型:
--
作者:
Gu L;Fang RH;Sailor MJ;Park JH

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金属有机前驱体的热分解可以生成高结晶度的氧化铁(IO)纳米晶,与水相沉淀法合成的IO纳米晶相比,IO纳米晶具有更好的MR对比度和更低的多分散性。本研究以聚乙二醇链为侧链的磷脂为包覆剂,研究了热分解法制备的IO纳米晶的体内特性。IO纳米晶的大小和表面化学结构影响着其生物分布、生物降解和生物清除的速率以及生物降解产物。我们的结论是,聚乙二醇单分散IO纳米晶和铁、磷脂和油酸生物降解产物在体内的命运可能会影响器官和血液中的细胞环境,从而决定它们在体内的安全性。
Thermal decomposition of organometallic precursors have been found to generate highly crystalline iron oxide (IO) nanocrystals that display superior MR contrast and lower polydispersity than IO nanocrystals synthesized by aqueous precipitation. In the present study, the in vivo characteristics of IO nanocrystals prepared by the thermal decomposition route and then coated with a phospholipid containing a pendant poly(ethylene glycol) chain are examined. The size and surface chemistry of the IO nanocrystal influences the biodistibution, the rate of biodegradation and bioclearance, and the biodegradation products. We conclude that the in vivo fate of PEGylated monodisperse IO nanocrystals and the iron, phospholipid, and oleic acid biodegradation products may influence the cellular environments in the organs and blood that can determine their safety in the body.
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影响因子: 4.9
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