| Literature DB >> 23598044 |
Mariska de Smet1, Sander Langereis, Sandra van den Bosch, Katrin Bitter, Nicole M Hijnen, Edwin Heijman, Holger Grüll.
Abstract
The goal of this study was to investigate the blood kinetics and biodistribution of temperature-sensitive liposomes (TSLs) for MR image-guided drug delivery. The co-encapsulated doxorubicin and [Gd(HPDO3A)(H₂O)] as well as the ¹¹¹In-labeled liposomal carrier were quantified in blood and organs of tumor bearing rats. After TSL injection, mild hyperthermia (T=42 °C) was induced in the tumor using high intensity focused ultrasound under MR image-guidance (MR-HIFU). The biodistribution of the radiolabeled TSLs was investigated using SPECT/CT imaging, where the highest uptake of ¹¹¹In-labeled TSLs was observed in the spleen and liver. The MR-HIFU-treated tumors showed 4.4 times higher liposome uptake after 48 h in comparison with controls, while the doxorubicin concentration was increased by a factor of 7.9. These effects of HIFU-treatment are promising for applications in liposomal drug delivery to tumors.Entities:
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Year: 2013 PMID： 23598044 DOI： 10.1016/j.jconrel.2013.04.005
Source DB: PubMed Journal: J Control Release ISSN： 0168-3659 Impact factor: 9.776