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Browsing by Author "Korf, Hans W."

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    Biodegradable human serum albumin nanoparticles as contrast agents for the detection of hepatocellular carcinoma by magnetic resonance imaging
    (Elsevier, 2014) Waralee Watcharin ; Schmithals, Christian ; Pleli, Thomas ; Koberle, Verena ; Korkusuz, Hudayi ; Huebner, Frank ; Zeuzem, Stefan ; Korf, Hans W. ; Vogl, Thomas J. ; Rittmeyer, Claudia ; Terfort, Andreas ; Piiper, Albrecht ; Gelperina, Svetlana ; Kreuter, Jorg
    Tumor visualization by magnetic resonance imaging (MRI) and nanoparticle-based contrast agents may improve the imaging of solid tumors such as hepatocellular carcinoma (HCC). In particular, human serum albumin (HSA) nanoparticles appear to be a suitable carrier due to their safety and feasibility of function- alization. In the present study HSA nanoparticles were conjugated with gadolinium diethylenetriamine- pentaacetic acid (Gd-DTPA) using carbodiimide chemistry. The nanoparticles had a uniform spherical shape and a diameter of 235 ± 19 nm. For better optical visualization in vitro and in vivo, the HSA-Gd nanoparticles were additionally labeled with rhodamine 123. As shown by confocal microscopy and flow cytometry analysis, the fluorescent nanoparticles were readily taken up by Huh-7 hepatocellular carci- noma cells. After 24 h incubation in blood serum, less than 5% of the Gd(III) was released from the par- ticles, which suggests that this nanoparticulate system may be stable in vivo and, therefore, may serve as potentially safe T1 MRI contrast agent for MRI of hepatocellular carcinoma.

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