Abstract
Purpose
Embolization is mainly used to reduce the size of locally advanced tumors. In this study, selective arterial catheterization with chitosan micro-hydrogels (CMH) into the femoral artery was performed and the therapeutic effect was validated using different imaging methods.
Methods
Male SD rats (n = 18, 6 weeks old) were randomly assigned into three groups: Group 1 as control, Group 2 without any ligation of distal femoral artery, and Group 3 with temporary ligation of the distal femoral artery. RR1022 sarcoma cell lines were inoculated into thigh muscle. After 1 week, CMH was injected into the proximal femoral artery. Different imaging modalities were performed during a 3-week follow-up.
Results
The tumor size was significantly (P < 0.001) decreased in both Group 2 and Group 3 (P < 0.001) after selective arterial embolization therapy. 18F-FDG-PET/CT revealed decreased intensity of 18F-FDG uptake in tumors. The accumulation status of 125I-CMH near the tumor was verified by gamma camera.
Conclusions
Appropriate selective arterial embolization therapy with CMH was.
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Acknowledgments
This research was supported by National Research Foundation of Korea and funded by the Ministry of Science, ICT and Future Planning; 2012M2A2A7014020, 2012M2A2A7035779 and 2011-0028581.
Ethical Statement
This study was approved by the animal ethics committee in our hospital and performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
Conflict of Interest
Tai Kyoung Lee, JeongIl Kwon, Kyung Sook Na, Hwan-Seok Jeong, Hyosook Hwang, Phil-Sun Oh, Dong Hyun Kim, Kyu Yun Jang, Seok Tae Lim, Myung-Hee Sohn, Hwan-Jeong Jeong declare that they have no conflict of interest.
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Lee, T.K., Kwon, J., Na, K.S. et al. Evaluation of Selective Arterial Embolization Effect by Chitosan Micro-Hydrogels in Hindlimb Sarcoma Rodent Models Using Various Imaging Modalities. Nucl Med Mol Imaging 49, 191–199 (2015). https://doi.org/10.1007/s13139-014-0316-y
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DOI: https://doi.org/10.1007/s13139-014-0316-y