Superabsorbent Polymer Microspheres Prepared with Hypertonic Saline to Reduce Microsphere Expansion
| Autor: | Kohei Morita, Toshihiro Tanaka, Chiho Obayashi, Shinich Hori, Tetsuya Masada, Kimihiko Kichikawa, Masaaki Kaneko, Takeshi Sato, Shota Tatsumoto, Nagaaki Marugami, Ai Kijima, Yasushi Fukuoka, Hideyuki Nishiofuku |
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| Rok vydání: | 2018 |
| Předmět: |
Male
Polymers Sodium Contrast Media chemistry.chemical_element Antineoplastic Agents Radiography Interventional 030218 nuclear medicine & medical imaging Microsphere 03 medical and health sciences Liver Neoplasms Experimental 0302 clinical medicine In vivo Animals In vitro study Medicine Radiology Nuclear Medicine and imaging Chemoembolization Therapeutic Saline Solution Hypertonic Mean diameter Chromatography business.industry Microspheres Hypertonic saline chemistry Superabsorbent polymer Fluoroscopy 030220 oncology & carcinogenesis Rabbits Cisplatin Cardiology and Cardiovascular Medicine business |
| Zdroj: | CardioVascular and Interventional Radiology. 41:1412-1418 |
| ISSN: | 1432-086X 0174-1551 |
| DOI: | 10.1007/s00270-018-1990-4 |
| Popis: | 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. 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. 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). 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. |
| Databáze: | OpenAIRE |
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