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Magnets control drug release
Magnetic nanoparticle-vesicle assemblies embedded within a hydrogel release their contents in response to a remote magnetic trigger
A smart tissue-like biomaterial that can release drugs in response to a magnetic trigger has been created by UK scientists.
Simon Webb and colleagues from the University of Manchester used magnetic nanoparticles to glue together dye-containing vesicles then embedded them in a hydrogel. Webb positioned the vesicles within the hydrogel using magnetism and showed he could release the dye using an alternating magnetic field as a trigger. Webb says this indicates that the tissue-like gel could be used to store drugs and deliver them to the site of disease without affecting the surrounding tissue.
More: http://www.rsc.org/Publishing/ChemTech/Volume/2009/05/magnets_drug_release.asp
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