News Release

一种进行“透析”的生物人工系统可治疗猪的肝衰竭

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

A Bioartificial System Acts as "Dialysis" For Failing Livers in Pigs (1 of 2)

video: A video showing the air liquid bioartificial liver expanding liver progenitor-like cells. This material relates to a paper that appeared in the Jul. 8, 2020, issue of Science Translational Medicine, published by AAAS. The paper, by W.-J. Li at Jiaotong University School of Medicine in Shanghai, China; and colleagues was titled, "An extracorporeal bioartificial liver embedded with 3D-layered human liver progenitor-like cells relieves acute liver failure in pigs." view more 

Credit: [Credit: W.-J. Li <i>et al., Science Translational Medicine</i> (2020)]

一种包含增强型肝细胞的生物人工系统可在猪体内进行类似肝脏形式的透析,它能有效地发挥肝的解毒作用,防止急性肝衰竭的猪的肝脏受到进一步的损伤。随着进一步的发展,该系统可为急性肝衰竭患者提供一种新型、急需的治疗方法;急性肝衰竭的死亡率可高达到80%。急性肝功能衰竭可由从药物过量到肝手术等多种因素所致。急性肝衰竭的唯一有效干预措施是肝移植,但由于捐赠肝脏短缺、需要用免疫抑制药物以及某些患者事实上被认为不宜移植等因素,进行肝移植常常不切实际。为消弭这一治疗缺口,Wei-Jian Li和同事创建了他们的气-液交互式生物人工肝脏(Ali-BAL);这是一种基于生物反应器的体外系统,它可以在支架上培养肝祖细胞样细胞以提供完整的肝功能。当与身体的脉管系统连通后,Ali-BAL可通过一系列的泵和血浆过滤器接受血液,这些血液会与生物反应器中的肝细胞接触,并将解了毒的血液返回身体。科学家在由药物过量诱发的急性肝衰竭的猪模型中测试了他们的系统;他们发现,3小时的治疗足以解除诸如氨等化合物的毒性,防止肝脏发炎并增强肝脏再生。这种治疗也是安全的,它能大大提高存活率:在6头得到治疗的猪中有5头存活下来,而未治疗的6头猪中只有1头活了下来。Li等人写道,在进行人体临床研究之前,应做进一步的实验来测试他们的系统对其它形式急性肝衰竭(如外科手术诱发的肝衰竭)的功效。

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