Journal
BULLETIN OF MATERIALS SCIENCE
Volume 29, Issue 6, Pages 581-586Publisher
INDIAN ACADEMY SCIENCES
DOI: 10.1007/s12034-006-0007-0
Keywords
magnetic nanoparticle; surface functionafization; in vivo biodistribution; magnetic resonance imaging (MRI); magnetic hyperthermia; contrast agent
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Magnetic nanoparticles have attracted wide attention because of their usefulness as contrast agents for magnetic resonance imaging (MRI) or colloidal mediators for canter magnetic hyperthermia. This paper examines these in vivo applications through an understanding of the problems involved and the current and future possibilities for resolving them. A special emphasis is made on magnetic nanoparticle requirements from a physical viewpoint, the factors affecting their biodistribution and the solutions envisaged for enhancing their half-life in the blood compartment and targeting tumour cells. Then, our synthesis strategies are presented and focused on covalent platforms based on maghemite and dextran and capable to be tailor-derivatized by surface molecular chemistry. The opportunity of taking advantage of temperature-dependence of magnetic properties of some complex oxides for controlling the in vivo temperature is also discussed.
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