Abstract
AbstractBiodistribution and computed tomography (CT) imaging characteristics of iopromide-carrying liposomes were investigated in healthy or tumor-bearing rats. The mean diameter of the liposomes obtained by the ethanol evaporation method was approximately 0.5 urn and the encapsulation amounted to 32 %. In the biodistribution study a significant accumulation of the liposomal contrast medium was observed at both examined doses (250 and 1000 mg total iodine/kg b.w.) in liver and spleen. A dose-dependent enrichment in these organs could be demonstrated. Increasing the iodine and thus lipid dose resulted in a marked increase in blood iodine concentration for prolonged time periods due to saturation of liver uptake. Increasing the injection rate 20-fold at a dose of 250 mg iodine/kg b.w. did not significantly (p > 0.05) change the biodistribution behaviour. In the CT study in healthy rats doses in the range from 100 to 2000 mg iodine/kg were investigated/There was an increase in density in liver and spleen in ...
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