Evaluation of thermally cross-linked superparamagnetic iron oxide nanoparticles for the changes of concentration and toxicity on tissues of Sprague-Dawley rats

  • Hue, Jin Joo (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University) ;
  • Lee, Hu-Jang (College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University) ;
  • Jon, Sangyong (School of Life Science, Gwangju Institute of Science and Technology) ;
  • Nam, Sang Yoon (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University) ;
  • Yun, Young Won (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University) ;
  • Kim, Jong-Soo (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University) ;
  • Lee, Beom Jun (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University)
  • Received : 2014.11.10
  • Accepted : 2014.12.18
  • Published : 2014.12.31


This study was investigated the change of concentration and toxicity of thermally cross-linked superparamagnetic iron oxide nanoparticles (TCL-SPION) on tissues of Sprague-Dawley rats. TCL-SPION at the dose of 15 mg/kg body weight was intravenously injected into the tail vein of the male Sprague-Dawley rats. The fate of TCL-SPION in serum, urine and tissues was observed during 28 days. Serum iron level was maximal at 0.25 h post-injection and gradually declined thereafter. In addition, the sinusoids of liver and the red pulp area of spleen were mainly accumulated iron from 0.5 h to 28-day post-injection. In kidney, iron deposition was detected in the tubular area until 0.5 h after injection. Malondialdehyde concentration in the liver slightly increased with time and was not different with that at zero time. In the liver and spleen, TNF-${\alpha}$ and IL-6 levels of TS treated with TCL-SPION were not different with those of the control during the experimental period. From the results, TCL-SPION could stay fairly long-time in certain tissues after intravenous injection without toxicity. The results indicated that TCL-SPION might be useful and safe as a contrast for the diagnosis of cancer or a carrier of therapeutic reagents to treat diseases.


Supported by : National Research Foundation of Korea(NRF), Korea Food and Drug Administration


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