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
中科院分区:
文献类型:
--
作者:
Gu L;Fang RH;Sailor MJ;Park JH
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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