Suitable blending method of lipiodol-cisplatin in transcatheter arterial embolization for hepatocellular carcinoma: evaluation of sustained release and accumulation nature.
OBJECTIVE
Recently, fine powder cisplatin (IA-call; Nipponkayaku, Japan) was released, but there is no detailed study on an appropriate blending method of lipiodol-cisplatin for transcatheter arterial chemoembolization. We evaluated the sustained release and accumulation nature of lipiodol-cisplatin for hepatocellular carcinoma.


METHODS
We prepared three types of mixture: a suspension of lipiodol and cisplatin powder, an emulsion of cisplatin powder dissolved with contrast medium and lipiodol, and a suspension-emulsion that was a suspension of lipiodol and cisplatin powder emulsified with contrast medium. In a basic study, a cisplatin release test was performed. In a clinical evaluation, transcatheter arterial chemoembolization with 3 lipiodol-cisplatin mixtures that had sustained release was performed in 60 consecutive patients with hepatocellular carcinoma as a randomized controlled trial. The density ratio of the tumor and treated liver tissue was measured as the accumulation nature.


RESULTS
The suspension-emulsion and emulsion with a 7:3 mixture of lipiodol and contrast medium, and the suspension had better sustained release. The accumulation nature of the suspension-emulsion and emulsion were higher than the suspension.


CONCLUSIONS
The pattern efficiently accumulated on hepatocellular carcinoma was the suspension-emulsion and emulsion. We suggest that a suspension-emulsion may be created more easily and is more suitable for clinical use.
Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, Japan. yasu-takaki@pop21.odn.ne.jp
Yasunobu
Y
Takaki
Toshio
T
Kaminou
Masanobu
M
Shabana
Takashi
T
Ihaya
Kenji
K
Otsubo
Toshihide
T
Ogawa
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000970:Antineoplastic Agents / Q000008:administration & dosage*; D006528:Carcinoma, Hepatocellular / Q000628:therapy*; D016461:Chemoembolization, Therapeutic; D002945:Cisplatin / Q000008:administration & dosage*; D003287:Contrast Media / Q000008:administration & dosage*; D004655:Emulsions; D005260:Female; D006801:Humans; D007459:Iodized Oil / Q000008:administration & dosage*; D008113:Liver Neoplasms / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D013535:Suspensions
D000970:Antineoplastic Agents; D003287:Contrast Media; D004655:Emulsions; D013535:Suspensions; D007459:Iodized Oil; D002945:Cisplatin