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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3581

Title: Superabsorbent Polymer Microspheres Prepared with Hypertonic Saline to Reduce Microsphere Expansion.
Other Titles: 超吸水性ポリマー球状塞栓物質の高張食塩水を用いた膨潤抑制法の開発
Authors: Sato, Takeshi
Tanaka, Toshihiro
Nishiofuku, Hideyuki
Fukuoka, Yasushi
Masada, Tetsuya
Tatsumoto, Shota
Marugami, Nagaaki
Morita, Kohei
Obayashi, Chiho
Hori, Shinich
Kaneko, Masaaki
Kijima, Ai
Kichikawa, Kimihiko
Keywords: TACE
Drug-eluting microsphere
Cisplatin
Issue Date: Sep-2018
Publisher: Springer Nature
Citation: Cardiovascular and interventional radiology Vol.41 No.9 p.1412-1418 (2018 Sep)
Abstract: PURPOSE: To analyze size changes of superabsorbent polymer (SAP) microspheres with the reduced expansion technique, and to evaluate pharmacological advantages of transarterial chemoembolization using cisplatin-loaded SAP microspheres with the reduced expansion technique. MATERIALS AND METHODS: In an in vitro study, diluted contrast materials containing different concentrations of sodium ions were examined to expand SAP microspheres and determined the reduced expansion technique. Size distributions of cisplatin-loaded SAP microspheres were analyzed. In an in vivo study, TACE was performed using cisplatin-loaded SAP microspheres with the reduced expansion and control techniques in 18 VX2 rabbits. RESULTS: The degree of expansion was reduced to the greatest extent by using a mixture of non-ionic contrast material and 10% NaCl at a 4:1 ratio. The mean diameter of the reduced expansion of cisplatin-loaded SAP microspheres was 188.4 μm, while that of the control expansion was 404.9 μm. The plasma platinum concentrations of the reduced expansion group at 5 min after TACE were significantly higher than those of the control expansion group (2.19 ± 0.77 vs. 0.75 ± 0.08 μg/mL, P = .01). The tumor platinum concentrations of the reduced expansion group at 1 h were significantly higher than those of the control expansion group (10.76 ± 2.57 vs. 1.57 ± 0.14 μg/g, P = .044). CONCLUSION: The expanding level of SAP microspheres can be reduced by using hypertonic saline. Cisplatin-loaded SAP microspheres with the reduced expansion technique have the advantages of achieving higher cisplatin tissue concentration in TACE for liver tumors.
Description: 博士(医学)・甲第709号・平成31年6月26日
© Springer Science+Business Media, LLC, part of Springer Nature and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2018
This is a post-peer-review, pre-copyedit version of an article published in Cardiovascular and interventional radiology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00270-018-1990-4.
URI: http://hdl.handle.net/10564/3581
ISSN: 01741551
Academic Degrees and number: 24601A709
Degree-granting date: 2019-06-26
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2019年度

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