中国组织工程研究

• 生物材料学术探讨 biomaterial academic discussion • 上一篇    下一篇

生物人工肝系统的生物反应器

许  东,付文君   

  1. 宁夏第四人民医院综合科,宁夏回族自治区银川市  750021
  • 出版日期:2010-01-15 发布日期:2010-01-15
  • 作者简介:许 东,男,1972年生,宁夏回族自治区银川市人,汉族,1997年宁夏医学院毕业,主治医师,主要从事内科专业。 Xudong.2008.good@163.com

Bioreactor in bioartificial liver system

Xu Dong, Fu Wen-jun   

  1. Department of Comprehensive Medicine, Ningxia Fourth People’s Hospital, Yinchuan  750021, Ningxia Hui Autonomous Region, China
  • Online:2010-01-15 Published:2010-01-15
  • About author:Xu Dong, Attending physician, Department of Comprehensive Medicine, Ningxia Fourth People’s Hospital, Yinchuan 750021, Ningxia Hui Autonomous Region, China

摘要:

目的:介绍生物反应器的基本作用、功能、条件和要求,并对主要生物反应器的研究进展予以探讨。
方法:由第一作者应用计算机检索PubMed数据库(http://www.ncbi.nlm.nih. gov/PubMed,英文)及CNKI数据库(www.cnki.net/index.htm,中文)。检索时限1994-01/2009-08。中文检索关键词:生物人工肝,生物反应器,膜材料。英文检索关键词:bioartificial liver,bioreactor,membrane material。文献筛选、纳入标准:①选取针对性强,相关度高的文献。②对同一领域的文献选择近期发表或权威杂志的文献。③排除较陈旧的理论观点以及一些重复性研究。
结果:计算机初检到150篇文献,阅读标题和摘要进行初筛,排除研究目的与本文无关的文献88篇,内容重复性研究32篇,共30篇文献符合标准。结果显示生物人工肝系统正在成为肝衰竭患者体外有效的肝支持治疗手段,生物反应器为肝细胞提供良好的生长代谢环境、物质交换及免疫隔离的平台,是人工肝最重要的组成部分。以纤维素半透膜为基础的生物反应器主要有平板式反应器、中空纤维型反应器,半透膜材料主要有混合纤维素酯膜、醋酸纤维素膜、铜仿膜、聚偏二氟乙烯膜、聚丙烯膜等。
结论:生物反应器作为一个动态体系,伴随着生物反应器本身控制系统的优化,能够更好地控制反应器内部的传质,建立仿生物理化学梯度,实现肝细胞最小结构单元的模拟构建,膜材料的选择是构建人工肝支持系统生物反应器的首要和基础环节之一。

关键词: 生物人工肝, 生物反应器, 膜材料, 纤维素半透膜, 肝衰竭

Abstract:

OBJECTIVE: To introduce the basic functions, working conditions and requirements of bioreactor, additional, to discuss the research process of bioreactor.
METHODS: PubMed database (http://www.ncbi.nlm.nih.) and CNKI database (www.cnki.net/index.htm) were retrieved by the first author with search terms of “bioartificial liver, bioreactor, membrane material” both in English and Chinese. The time was limited between January 1994 and August 2009. Inclusion criteria: ①literatures closely linked to the article; ②papers published in more authoritative journals in recent years. ③the contents of old or duplicate documents were excluded.
RESULTS: Totally 150 documents were seized by primary screen, 88 irrelative papers and 32 duplicate documents were excluded, finally, 30 literature entered further analysis. Bioartificial liver system has become an effective in vitro supportive treatment for hepatic failure patients. Bioreactor is an important ingredient of bioartificial liver, which provided a platform for the hepatocytes growth metabolism, substances exchange and immune isolation. The main cellulose semipermeable bioreactor comprises flat membrane bioreactor and hollow fiber bioreactor, and the main types of semipermeable membranes contain mixed cellulose ester membrane, cellulose acetate membrane, cuprophan membrane, PVDF membrane, as well as poly(ethylene terephthalate) membrane.
CONCLUSION: As a dynamic system, the optimal of control system in bioreactor is conductive to regulating mass transfer and establishing bionic physical or chemical gradients, which can implement the construction of hepatocyte with smallest unit. The selection of membrane is the key link in bioreactor construction of bioartificial liver system

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