In Vitro Study of Photocurable Embolization Agent for Cerebral AneurysmsAyaka Ishikawa1, Yasuhide Nakayama2* and Nobuaki Kambe1
- Corresponding Author:
- Dr. Yasuhide Nakayama
Division of Medical Engineering and Materials
National Cerebral and Cardiovascular Center Research Institute
5-7-1 Fujishiro-dai, Suita, Osaka 565-8565, Japan
Tel: +81-6-6833-5012 (ex.2624)
Received date: February 16, 2012; Accepted date: February 23, 2012; Published date: February 25, 2012
Citation: Ishikawa A, Nakayama Y, Kambe N (2012) In Vitro Study of Photocurable Embolization Agent for Cerebral Aneurysms. J Biotechnol Biomaterial 2:128. doi:10.4172/2155-952X.1000128
Copyright: © 2012 Ishikawa A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The use of liquid embolic agents for the endovascular treatment of cerebral aneurysms has been reported in the neurosurgical literature. A major limitation of these agents is their relatively poor control of hardening ability. In this study, the technical feasibility of a novel gelatin-based photocurable liquid agent for embolization of cerebral aneurysms was evaluated using an experimental aneurysm model. The embolic agent used in this study was an aqueous mixture of photocurable gelatin (gelatin partially derivatized with eosin; 20 wt%; eosin content: 2.8 per gelatin molecule) and polyamine (a polymer of N,N -dimethylaminopropylacrylamide; 5 wt%). Because of its appropriate viscosity at 37 Ã¢ÂÂ° C (206 ± 45 mPa•s), the agent could be delivered into the sac of a glass aneurysm model (internal diameter: 3 mm at parent artery part; 5 mm at aneurysm part) by using through a 6 French (Fr)-delivery catheter under the inflation of a balloon catheter at the neck of the aneurysmal sac. After photo irradiation for 40 seconds, the neck of the aneurysm was capped with hydrogel converted from the agent (100%, n=5). Because the colored water was distributed evenly in only a parent tube, complete embolization was observed. Thus, this photocurable agent has potential to be used for the embolization of cerebral aneurysms.