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Effects of Nanoparticle Size on Cellular Uptake and Liver MRI with Polyvinylpyrrolidone-Coated Iron Oxide Nanoparticles
Open accessAbstract
The effect of nanoparticle size (30-120 nm) on magnetic resonance imaging (MRI) of hepatic lesions in vivo has been systematically examined using polyvinylpyrrolidone (PVP)-coated iron oxide nanoparticles (PVP-IOs). Such biocompatible PVP-IOs with different sizes were synthesized by a simple one-pot pyrolysis method. These PVP-IOs exhibited good crystallinity and high T(2) relaxivities, and the relaxivity increased with the size of the magnetic nanoparticles. It was found that cellular uptake changed with both size and surface physiochemical properties, and that PVP-IO-37 with a core size of 37 nm and hydrodynamic particle size of 100 nm exhibited higher cellular uptake rate and greater distribution than other PVP-IOs and Feridex. We systematically investigated the effect of nanoparticle size on MRI of normal liver and hepatic lesions in vivo. The physical and chemical properties of the nanoparticles influenced their pharmacokinetic behavior, which ultimately determined their ability to accumulate in the liver. The contrast enhancement of PVP-IOs within the liver was highly dependent on the overall size of the nanoparticles, and the 100 nm PVP-IO-37 nanoparticles exhibited the greatest enhancement. These results will have implications in designing engineered nanoparticles that are optimized as MR contrast agents or for use in therapeutics.
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Metadata
- Authors
- Huang, J., Bu, L., Xie, J., Chen, K., Cheng, Z., Li, X., & Chen, X.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-11-02
- Volume
- 4
- Issue
- 12
- Pages
- 7151-7160
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W58295951
- Cited by
- 463
- References
- 2
- FWCI
- 17.29
- Type
- journal article
- Language
- en
- Open access
- green
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