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access icon free In vivo evaluation of the biodistribution of intravenously administered naked and functionalised silver nanoparticles in rabbit

Water-based suspension of silver nanoparticles (AgNPs) and dextran coated AgNPs (dextran–AgNPs) are fabricated and characterised for intravenous administration. A simple method for radiolabelling of nanoparticles with 99mTc was used. Labelling efficiency for AgNPs and dextran–AgNPs was found to be more than 80 and 88%, respectively. In vivo tissue uptake of nanoparticles during dynamic phase, after systematic administration by biodistribution analysis with single-photon emission computed tomography imaging has been evaluated. Biodistribution analysis revealed that 99mTc–AgNPs and 99mTc–dextran–AgNPs are mainly accumulated in liver/spleen region but 99mTc–dextran–AgNPs delayed recognition and uptake by liver. Results indicate that dextran–AgNPs are able to evade reticuloendothelum system with enhanced blood retention time. Accumulation of nanoparticles in liver/spleen region implicates the utilisation of AgNPs for liver cancer treatment.

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-nbt.2014.0075
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