Preparation of in situ multifunctional traditional Chinese medicine thermosensitive microemulsion gel embolic agent for interventional therapy

微乳液 材料科学 生物相容性 生物医学工程 超顺磁性 聚(N-异丙基丙烯酰胺) 化学工程 医学 复合材料 聚合物 共聚物 磁化 量子力学 磁场 工程类 冶金 物理 肺表面活性物质
作者
Xinmeng Shi,Xietao Ye,Linqing Huang,Liangyin Wei,M.H. Chen,Ding Qu,Congyan Liu,Qin Chen,Yuping Liu,Yan Chen
出处
期刊:Journal of Drug Delivery Science and Technology [Elsevier]
卷期号:89: 105021-105021
标识
DOI:10.1016/j.jddst.2023.105021
摘要

Transcatheter arterial chemoembolization (TACE) is a minimally invasive procedure performed in interventional radiology to restrict a tumor's blood supply. Blood-vessel-embolic agents play key role on TACE. In the present work, we reported a Bletilla striata polysaccharide/poly (N-isopropylacrylamide) (BSP/PNIPAM) thermosensitive microemulsion gel loaded with magnetic icaritin (ICT) microemulsion (IS-MEs) as embolic agent (ISBP) for the first time. IS-MEs co-loaded with ICT and superparamagnetic iron oxide nanoparticles (SPIONs) were prepared by water titration method. The particle size of IS-MEs was 27.97 ± 0.25 nm, encapsulation efficiency was 97.18%, and presented a regular sphere under TEM. BSP/PNIPAM was prepared by free radical polymerization, which has good biocompatibility, excellent procoagulant function and dense microstructure. The low critical solution temperature (LCST) of ISBP was 30 °C, which had excellent in vitro injection performance. The microscopic morphology of ISBP was loose and porous, the long-acting sustained-release time could reach 144 h, and the maximum ICT release was (48.6 ± 8.5) %. IPSBs with SPIONs exhibit desirable imaging properties and macrophage M1 polarization function. During the rabbit renal artery embolization, ISBP showed excellent distal vascular embolization performance and there was no obstruction or adhesion of the catheter. These results suggest that a novel in situ multifunctional traditional Chinese medicine thermosensitive microemulsion gel embolic agent has been developed with a potential application as a liquid embolic solution for TACE.
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