中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (34): 6159-6165.doi: 10.3969/j.issn.2095-4344.2013.34.015

• 药物控释材料 drug delivery materials • 上一篇    下一篇

氧化海藻酸钠应用于体外循环管路

李金友1,李 彤2,于美丽3,高文卿2,胡晓旻2,陆海滨1,于广栋1   

  1. 1天津医科大学研究生院,天津市 300170;2天津市第三中心医院,天津市 300170;3天津市人工细胞重点实验室,天津市 300170
  • 出版日期:2013-08-20 发布日期:2013-08-20
  • 通讯作者: 李彤,教授,天津市第三中心医院,天津市 300170 litongtj@163.com
  • 作者简介:李金友,男,1985年生,安徽省阜阳市人,汉族,天津医科大学在读硕士,主要从事心脏外科研究。xuhuanzenren@163.com
  • 基金资助:

    天津市科技支撑计划重点项目(11ZCGYSY02000);天津市科学技术委员会一般项目(09JCYBJC27600)。

Oxidized sodium alginate used in an extracorporeal circulation pipe

Li Jin-you1, Li Tong2, Yu Mei-li3, Gao Wen-qing2, Hu Xiao-min2, Lu Hai-bin1, Yu Guang-dong1   

  1. 1Postgraduate School of Tianjin Medical University, Tianjin 300170, China; 2the Third Central Hospital of Tianjin, Tianjin 300170, China; 3Key Laboratory of Artificial Cells, Tianjin 300170, China
  • Online:2013-08-20 Published:2013-08-20
  • Contact: Li Tong, Professor, the Third Central Hospital of Tianjin, Tianjin 300170, China litongtj@163.com
  • About author:Li Jin-you, Studying for master’s degree, Postgraduate School of Tianjin Medical University, Tianjin 300170, China xuhuanzenren@163.com
  • Supported by:

    the Scientific and Technological Program of Tianjin, No. 11ZCGYSY02000*; the General Program of Tianjin Municipal Science and Technology Commission, No. 09JCYBJC27600*

摘要:

背景:目前体外循环肝素涂层管路应用较广,但是价格昂贵,限制了其广泛应用。

目的:将多醛基海藻酸钠涂层到医用聚氯乙烯体外循环管路,筛选出最佳涂层条件和所制备管路的稳定性及抗凝性能。

方法:利用高碘酸钠氧化海藻酸钠,制备高碘酸钠和海藻酸钠摩尔比分别为1∶8、1∶10和1∶12的多醛基氧化海藻酸钠,采用化学结合的方法将不同氧化度海藻酸钠固定到医用聚氯乙烯体外循环管路表面,筛选出最佳氧化度。以硫酸浓度、聚乙烯亚胺浓度、氧化海藻酸钠浓度、氧化海藻酸钠pH值和温度为因素,采用正交实验筛选最佳涂层条件,评价所制备管路氧化海藻酸钠固定的稳定性及抗凝血性能,并与空白对照组和肝素涂层组进行比较和分析。

结果与结论:氧化海藻酸钠最佳氧化度为高碘酸钠和海藻酸钠摩尔比为1∶10。筛选出的最佳涂层条件为50%浓硫酸、0.05%聚乙烯亚胺、反应溶液pH值为3.5、反应温度为40 ℃和氧化海藻酸钠质量浓度为2 g/L。氧化海藻酸钠涂层管路组脱落率与肝素涂层组有相似的结果,抗凝血性能稍劣于肝素涂层组(P < 0.05),但显著优于空白对照组。表明氧化海藻酸钠涂层体外循环管路具有良好的抗凝血性能和较好的稳定性。

关键词: 生物材料, 生物材料与药物控释, 体外循环, 海藻酸钠, 聚氯乙烯, 涂层, 抗凝血性能, 稳定性, 氧化度, 血液相容性, 省级基金

Abstract:

BACKGROUND: At present, a heparin-coated extracorporeal circulation pipe is used widely, but the price is expensive and limits its wide application.

OBJECTIVE: To screen the optimal coating condition of oxidated sodium alginate as a coating material to coat the medical polyvinyl chloride pipe and to evaluate the anticoagulant properties and the stability of the coated pipe.

METHODS: Oxidized sodium alginate was prepared with sodium periodate, and the mole ratio of sodium periodate and sodium alginate was 1:8, 1:10 and 1:12, respectively. Oxidized sodium alginate with different degree of oxidation was coated on the surface of medical polyvinyl chloride pipes by chemical methods, then to select the best degree of oxidation. The optimal coating condition was screened through an orthogonal experiment based on concentrations of sulfuric acid, polyethyleneimine and oxidized sodium alginate, and pH value and temperature of oxidized sodium alginate. Additionally, the anticoagulant properties and expulsion rates of the prepared pipes were evaluated in comparison with the blank control group and heparin-coated group. 

RESULTS AND CONCLUSION: The optimal oxidation degree for oxidized sodium alginate was 1:10 for the mole ratio of sodium periodate and sodium alginate. The best coating conditions were 50% concentrated sulfuric acid, 0.05% polyethyleneimine, 40 of reaction temperature, 2 g/L oxidized sodium alginate, and pH value=3.5. The oxidized sodium alginate coating group had a similar trend compared with heparin-coated group in the expulsion rate. The anticoagulant properties of oxidized sodium alginate coating group were little weaker than those of  heparin-coated group (P < 0.05), but significantly better than those of the blank control group. The oxidized sodium alginate-coated extracorporeal circulation pipe has a good anticoagulant property and stability.

Key words: biomaterials, biomaterials and drug controlled release, extracorporeal circulation, sodium alginate, polyvinyl chloride, coating, anticoagulant properties, stability, degree of oxidation, blood compatibility, provincial grants-supported paper

中图分类号: