Abstract
The tissue distribution of 99mTc-labeled vesicles prepared from synthetic amphiphiles containing an amino acid residue (synthetic liposomes) after intraperitoneal (i.p.) injection in Ehrlich solid tumor-bearing mice was investigated. Synthetic liposomes were labeled with 99mTc using stearylamine-diethylenetriaminepentaacetic acid as a chelator. The accumulation of the synthetic liposomes in liver decreased and that in pancreas significantly increased in comparison with those after intravenous injection. Gamma camera images after i.p. injection also indicated high uptake of the synthetic liposomes in pancreas. The radioactivity of the synthetic liposomes in vitro was taken up most highly in pancreas among some excised organs.
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