STM:速黏强力仿生胶为跳动的心脏打补丁

2014-01-10 koo 生物360

日前,美国波士顿儿童医院、布莱根妇女医院和麻省理工学院的研究人员在《科学-转化医学》上杂志上报告称,他们开发出了一种仿生黏合剂,能把生物降解补丁迅速黏到一个跳动着的心脏上,精确黏合心脏的先天性缺陷部位,比如心室缺陷。论文主要作者、布莱根妇女医院医学系生物医学工程分部的 Jeffrey Karp 表示:“在美国,每年约有 4 万名婴儿有先天性心脏缺陷,治疗需要多次手术,以装上或替换不可降解的植入物,



日前,美国波士顿儿童医院、布莱根妇女医院和麻省理工学院的研究人员在《科学-转化医学》上杂志上报告称,他们开发出了一种仿生黏合剂,能把生物降解补丁迅速黏到一个跳动着的心脏上,精确黏合心脏的先天性缺陷部位,比如心室缺陷。【原文下载】

论文主要作者、布莱根妇女医院医学系生物医学工程分部的 Jeffrey Karp 表示:“在美国,每年约有 4 万名婴儿有先天性心脏缺陷,治疗需要多次手术,以装上或替换不可降解的植入物,因为这些植入材料无法随孩子的成长而长大。”新研究有望改进先天性心脏缺陷的手术治疗。

要治疗先天性心脏缺陷,比如心脏上面的洞,手术治疗的入侵性很高,风险很大,至今还没有一种安全、迅速的保护措施来保护心脏内部。缝合要花太长时间,而且会压迫脆弱的心脏组织;现有的临床黏合剂要么毒性太大,要么在遇到血液或心脏跳动时会失去黏性。

自然界许多生物能分泌出黏稠、斥水的黏液,让它们能牢牢附着在潮湿和运动表面上。受此启发,研究人员开发出了拥有这些性质的材料,可生物降解、有弹性且与生物组织兼容。研究人员介绍,用这种胶黏合的可降解补丁,即使在心率增加、血压增高时仍然牢牢黏附。

新型仿生胶与目前的手术黏合剂都不同,即使遇到血液或在动态环境中,仍然保持很强的黏合力。“我们在补丁上涂上这种黏合剂,黏到跳动的心壁上,即使经受血液流经心脏和血管的高压,补丁也不会掉下来。”论文共同第一作者、布莱根妇女医院医学系生物医学工程分部的玛利亚·佩雷拉说。

论文共同第一作者、波士顿儿童医院心脏外科的 Nora Lang 表示:“研究表明,这种胶水的黏性足以在心脏上面黏住组织和补丁,黏合强度与缝合相当。此外,黏合的补丁是生物降解和生物兼容的,所以不会有任何外来物或有毒物留在病人体内。”而且它的黏性是通过紫外线来激活的,就像一种按需定制的抗出血“封条”,在进行高压大血管和心脏壁缺陷手术中,经紫外线照射能在5秒内黏住伤口。

研究人员指出,这种防水、光激活黏合剂在减少手术入侵性和缩短手术时间方面非常有用,还能提高心脏手术效果。论文主要作者、波士顿儿童医院心脏手术主任 Pedro del Nido 说:“它为医生提供了一种全新的、简单得多的技术,也是一种组织再造的新模式,能提高病人手术后的生活质量。”

目前,该黏合剂技术(及其相关平台)已授权给一家公司,未来两到三年有望投放市场。

原文出处:
Nora Lang, Maria J. Pereira, Yuhan Lee, Ingeborg Friehs, Nikolay V. Vasilyev, Eric N. Feins,Klemens Ablasser, Eoin D. O’Cearbhaill, Chenjie Xu, Assunta Fabozzo, Robert Padera,Steve Wasserman, Franz Freudenthal, Lino S. Ferreira, Robert Langer, Jeffrey M. Karp, and Pedro J. del Nido. A Blood-Resistant Surgical Glue for Minimally Invasive Repair of Vessels and Heart Defects. Sci Transl Med., 8 January 2014; DOI:10.1126/scitranslmed.3006557【原文下载】

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1677894, encodeId=88dc16e7894f7, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Mon Jul 21 19:55:00 CST 2014, time=2014-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6816, encodeId=912c681637, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6817, encodeId=cf2b681ee4, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6800, encodeId=f6e068004c, content=非常好 <br> <br> <br> 非常好 <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=111.127.83.224, createdTime=Mon Jan 13 12:52:00 CST 2014, time=2014-01-13, status=1, ipAttribution=)]
    2014-07-21 gdsun
  2. [GetPortalCommentsPageByObjectIdResponse(id=1677894, encodeId=88dc16e7894f7, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Mon Jul 21 19:55:00 CST 2014, time=2014-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6816, encodeId=912c681637, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6817, encodeId=cf2b681ee4, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6800, encodeId=f6e068004c, content=非常好 <br> <br> <br> 非常好 <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=111.127.83.224, createdTime=Mon Jan 13 12:52:00 CST 2014, time=2014-01-13, status=1, ipAttribution=)]
    2014-01-14 117.136.5.37

    人类的福音!

    0

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    2014-01-14 117.136.5.37

    人类的福音!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1677894, encodeId=88dc16e7894f7, content=<a href='/topic/show?id=29a8168130f' target=_blank style='color:#2F92EE;'>#STM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16813, encryptionId=29a8168130f, topicName=STM)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d76127619556, createdName=gdsun, createdTime=Mon Jul 21 19:55:00 CST 2014, time=2014-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6816, encodeId=912c681637, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6817, encodeId=cf2b681ee4, content=人类的福音!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=117.136.5.37, createdTime=Tue Jan 14 15:19:00 CST 2014, time=2014-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=6800, encodeId=f6e068004c, content=非常好 <br> <br> <br> 非常好 <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=111.127.83.224, createdTime=Mon Jan 13 12:52:00 CST 2014, time=2014-01-13, status=1, ipAttribution=)]
    2014-01-13 111.127.83.224

    非常好


    非常好

    0