摘要
本实验室设计合成了三种不同LA/GA比例的mPEG修饰PLGA(PELGA,含15%mPEG),为了评价它们的血液相容性,我们以硅化玻璃试管为阴性对照,未硅化的试管为阳性对照,参照国际标准(ISO10993)和《中华人民共和国国家标准GB/T 16886医疗器械生物学评价》方法进行了体外评价实验。试验包括溶血率实验,血小板黏附实验,动态凝血时间实验,凝血时间实验,血浆复钙时间实验和凝血酶原时间实验等综合评价指标。结果表明,合成材料具有优良的血液相容性,材料制成的纳米粒有望应用于静脉注射。
To identify the advantages of modification treated ploy (D, L -lactic and glycolic acid) with poly (ethylene glycol) (PLGA/mPEG,PELGA) block copolymer, blood compatibility was evaluated in vitro. Three different proportional block copolymers (LA/GA80: 20, 70: 30, 50: 50) with 15% mPEG were synthesized. According to the international standard organization (ISO10993) and National Standards of P, R. China GB/T 16886, siliconized glass tube was used as a negative control sample, while non-siliconized glass tube as a positive one. Blood compatibility of PELGA was evaluated by hemolytic ratio analysis, platelet adhesion investigation, dynamic clotting time, plasma recalclfication time (PR.T) measurements, plasma prothrombin time (PT) and clotting time (CT) test, The results revealed that blood compatibility of the synthesized materials was good. Nanoparticles made by this kind of materials might be promising for intravenous use.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2007年第2期336-339,共4页
Journal of Biomedical Engineering
基金
国家"十五"重大高技术发展研究计划(国家"863"计划)资助项目(2004AA273142)
关键词
聚乙交酯丙交酯
聚乙烯醇
嵌段共聚物
血液相容性
静脉注射
Ploy (D,L-lactic and glycolic acid)(PLGA) Poly (ethylene glycol)(PEG) Block copolymer Blood compatibility Intravenous injection