Nat Biomed Eng: 中外科研团队研发出修复心脏“创可贴”

2019-04-16 唐凤 中国科学报

苏州大学教授杨磊(现任职河北工业大学)团队、复旦大学教授孙宁团队与美国布朗大学教授高华健团队合作,研发出一种用于心肌梗死治疗的粘弹性自黏附心肌补片。相关成果在线发表于4月15日《自然—生物医学工程》。

苏州大学教授杨磊(现任职河北工业大学)团队、复旦大学教授孙宁团队与美国布朗大学教授高华健团队合作,研发出一种用于心肌梗死治疗的粘弹性自黏附心肌补片。相关成果在线发表于4月15日《自然—生物医学工程》。

心肌补片是治疗严重心肌梗死和后续心衰的一种潜在有效方式。然而,心肌补片在限制心室病理性重构和改善心功能方面的力学机制尚不清楚,不同性质的材料已被用于制备各类心肌补片,但是否存在最优材料特性与力学性能仍未知。

该研究团队首先构建了心室的有限元模型,对心肌梗死和非梗死区域的力学环境进行了准确定量表述。接下来,研究人员通过计算模拟,研究了在梗死区域应施加何种力学约束可重建其力学功能并消除两个区域间的力学差异。根据得出的最佳力学重建策略,他们开发了具有“凝胶点”流变学特性的力学自适应性自粘心肌补片GPAP。

“它黏附在心脏表面后,能显著降低梗死区域心肌的弛豫常数,达到与非梗死区域几乎一致的水平。”杨磊告诉《中国科学报》,在使用GPAP后,动物的病情会得到延缓和逆转,心功能的主要指标也会全部得到恢复,效果超越了几乎所有已报道的无细胞类心肌补片甚至部分干细胞补片。

本研究体现了医学、物理学与材料学等不同学科交叉合作的优势,揭示了心肌梗死治疗中的力学作用机制,开发了一种具有自主知识产权的心肌补片,可望有效治疗心肌梗死。该研究成果为包括缺血性心肌病在内的重大疾病的治疗开辟了新思路。

原始出处:

Xiao Lin, Yue Liu, Aobing Bai, et.al. A viscoelastic adhesive epicardial patch for treating myocardial infarction. Nature Biomedical Engineering 15 April 2019

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    2019-06-15 sunylz
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    2020-01-14 liye789132251
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    2019-08-27 spoonycyy
  5. [GetPortalCommentsPageByObjectIdResponse(id=1918620, encodeId=424c1918620a4, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Sat Jun 15 02:02:00 CST 2019, time=2019-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2035564, encodeId=9589203556468, content=<a href='/topic/show?id=75a23208487' target=_blank style='color:#2F92EE;'>#创可贴#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=32084, encryptionId=75a23208487, topicName=创可贴)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=68f2317, createdName=天堂的云, createdTime=Mon Sep 30 06:02:00 CST 2019, time=2019-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883677, encodeId=05b918836e722, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jan 14 17:02:00 CST 2020, time=2020-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081547, encodeId=7666208154e94, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Tue Aug 27 15:02:00 CST 2019, time=2019-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=365075, encodeId=c68e3650e5f1, content=还行吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b9e75079922, createdName=145aec6fm35暂无昵称, createdTime=Mon Apr 22 11:38:27 CST 2019, time=2019-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1300256, encodeId=b32f1300256f7, content=<a href='/topic/show?id=ed5ee332423' target=_blank style='color:#2F92EE;'>#研发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73324, encryptionId=ed5ee332423, topicName=研发)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=aea0290, createdName=lqvr, createdTime=Thu Apr 18 09:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609696, encodeId=1488160969670, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Apr 18 09:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=364751, encodeId=2db3364e5140, content=学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Tue Apr 16 18:53:59 CST 2019, time=2019-04-16, status=1, ipAttribution=)]
    2019-04-22 145aec6fm35暂无昵称

    还行吧

    0

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    2019-04-18 lqvr
  7. [GetPortalCommentsPageByObjectIdResponse(id=1918620, encodeId=424c1918620a4, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Sat Jun 15 02:02:00 CST 2019, time=2019-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2035564, encodeId=9589203556468, content=<a href='/topic/show?id=75a23208487' target=_blank style='color:#2F92EE;'>#创可贴#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=32084, encryptionId=75a23208487, topicName=创可贴)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=68f2317, createdName=天堂的云, createdTime=Mon Sep 30 06:02:00 CST 2019, time=2019-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883677, encodeId=05b918836e722, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jan 14 17:02:00 CST 2020, time=2020-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081547, encodeId=7666208154e94, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Tue Aug 27 15:02:00 CST 2019, time=2019-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=365075, encodeId=c68e3650e5f1, content=还行吧, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b9e75079922, createdName=145aec6fm35暂无昵称, createdTime=Mon Apr 22 11:38:27 CST 2019, time=2019-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1300256, encodeId=b32f1300256f7, content=<a href='/topic/show?id=ed5ee332423' target=_blank style='color:#2F92EE;'>#研发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73324, encryptionId=ed5ee332423, topicName=研发)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=aea0290, createdName=lqvr, createdTime=Thu Apr 18 09:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609696, encodeId=1488160969670, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Thu Apr 18 09:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=364751, encodeId=2db3364e5140, content=学习了,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Tue Apr 16 18:53:59 CST 2019, time=2019-04-16, status=1, ipAttribution=)]
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    2019-04-16 天地飞扬

    学习了,谢谢分享!

    0

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关节软骨缺损由于缺乏自愈性目前仍没有有效的治疗方法。传统疗法如骨髓刺激技术和关节置换术在减轻疼痛方面是有效的,但它们不能再生成具有正常形态和功能的健康透明软骨。另外,由于这些治疗方法无法逆转软骨损伤,损伤部位可能会恶化并需要进行二次手术,严重者将导致关节功能障碍和永久性残疾。

视网膜修复

视网膜受损时,视力会受到很大的影响。不幸的是,虽然全球有数亿人患有视网膜变性,但目前还没有有效的治疗方法。然而,随着干细胞技术的不断进步,新方法有望修复视网膜。无论是通过培养新细胞,然后将它们移植到视网膜中,还是通过从头开始构建整个视网膜,干细胞疗法有望提高视网膜变性患者的视力,还他们一个清晰的世界。

发现修复潜在癌性DNA损伤的细胞机制

该研究发表在Nature Cell Biology上,该机制可以保护我们免受自然DNA错误的影响,这些错误可能会永久性地破坏我们的遗传密码并导致癌症等疾病。

同种异体肌腱加强修复肾功能衰竭伴双侧股四头肌腱断裂一例

自发性肌腱断裂是一种罕见且机制复杂的疾病,其中双侧股四头肌腱同时断裂更少见,一般并发于各种慢性代谢疾病。由于没有明确外伤诱因,自发性股四头肌断裂容易漏诊,临床诊疗中易忽略患者系统性疾病或在服药物对肌腱断裂的影响,影响疗效和预后。2016年10月,我们收治1例肾功能衰竭伴自发性双侧股四头肌腱断裂患者。报告如下。

Mol Ther:重磅!中国科学家利用CRISPR技术成功修复人类胚胎中的基因突变

基因编辑技术发展势如破竹,遗传性疾病的有效治疗显得日益迫切。近日,来自上海科技大学的黄行许教授和广州医科大学附属第三医院的刘见桥教授领导的研究小组利用最新CRISPR技术成功纠正了胚胎中的马凡综合症(MFS)致病突变。这一研究成果代表着在重塑人类胚胎DNA的尝试基础上取得了重大突破。

人生理想时光却看不见了?修复你的眼,干细胞有股巧劲儿

“眼前的黑不是黑,你说的白是什么白……如果我能看得见,生命也许完全不同……”一首《你是我的眼》在各类综艺节目中常能唱哭全场。有资料显示,人类接收到的信息90%来自视觉,这也是人们最能对盲人的无助感同身受的原因之一。