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Acta Biomater:ZrO2-纳米膜包覆的Zn-Li合金可实现可控生物降解并增强骨整合

2020-02-15 不详 网络

锌及其合金由于人体中Zn2 +离子的重要生理功能已成为可生物降解金属(BMs)的新研究方向。然而,在体外研究过程中低的抑制浓度阈值导致Zn2 +离子引起细胞毒性和体内延迟的骨整合是批量锌基BM的两个主要缺陷。为了解决这些问题,我们通过原子层沉积(ALD)在Zn-0.1(wt。%)Li合金的表面上构造了ZrO2纳米膜的阻挡层。由于涂层组合物和Zn-0.1Li合金基材之间的电偶耦合,观察到Zn2 +离

锌及其合金由于人体中Zn2 +离子的重要生理功能已成为可生物降解金属(BMs)的新研究方向。然而,在体外研究过程中低的抑制浓度阈值导致Zn2 +离子引起细胞毒性和体内延迟的骨整合是批量锌基BM的两个主要缺陷。

为了解决这些问题,我们通过原子层沉积(ALD)在Zn-0.1(wt。%)Li合金的表面上构造了ZrO2纳米膜的阻挡层。由于涂层组合物和Zn-0.1Li合金基材之间的电偶耦合,观察到Zn2 +离子的释放减少,而Li +离子的释放加快。细胞相容性分析表明,ZrO2纳米膜包覆的Zn-0.1Li合金具有改善的细胞粘附性和生存能力。组织学分析还表明,ZrO2纳米膜涂覆的Zn-0.1Li合金在体内的骨整合更好。

因此,本研究阐明了基于Zn的BMs上ZrO2纳米膜的ALD可以有效促进骨整合并控制其生物降解行为。

原始出处:

Yuan W, Xia D, et al., Controllable biodegradation and enhanced osseointegration of ZrO2-nanofilm coated Zn-Li alloy: In vitro and in vivo studies. Acta Biomater. 2020 Jan 20. pii: S1742-7061(20)30036-2. doi: 10.1016/j.actbio.2020.01.022. 

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    2020-08-06 sunylz
  2. [GetPortalCommentsPageByObjectIdResponse(id=1918978, encodeId=ed4719189e8e8, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Aug 06 06:21:00 CST 2020, time=2020-08-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1849846, encodeId=55d1184984622, content=<a href='/topic/show?id=61815385aa' target=_blank style='color:#2F92EE;'>#CTA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5385, encryptionId=61815385aa, topicName=CTA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ec9955, createdName=windight, createdTime=Thu Jan 21 21:21:00 CST 2021, time=2021-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1465419, encodeId=fc0e14654191d, content=<a href='/topic/show?id=662a388823e' target=_blank style='color:#2F92EE;'>#合金#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=38882, encryptionId=662a388823e, topicName=合金)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=81df6719716, createdName=楚秀娟, createdTime=Mon Feb 17 07:21:00 CST 2020, time=2020-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1521790, encodeId=e1881521e9057, content=<a href='/topic/show?id=0b8f101e026a' target=_blank style='color:#2F92EE;'>#骨整合#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101702, encryptionId=0b8f101e026a, topicName=骨整合)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=03f111392267, createdName=bnurmamat, createdTime=Mon Feb 17 07:21:00 CST 2020, time=2020-02-17, status=1, ipAttribution=)]
    2021-01-21 windight
  3. [GetPortalCommentsPageByObjectIdResponse(id=1918978, encodeId=ed4719189e8e8, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Thu Aug 06 06:21:00 CST 2020, time=2020-08-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1849846, encodeId=55d1184984622, content=<a href='/topic/show?id=61815385aa' target=_blank style='color:#2F92EE;'>#CTA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5385, encryptionId=61815385aa, topicName=CTA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ec9955, createdName=windight, createdTime=Thu Jan 21 21:21:00 CST 2021, time=2021-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1465419, encodeId=fc0e14654191d, content=<a href='/topic/show?id=662a388823e' target=_blank style='color:#2F92EE;'>#合金#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=38882, encryptionId=662a388823e, topicName=合金)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=81df6719716, createdName=楚秀娟, createdTime=Mon Feb 17 07:21:00 CST 2020, time=2020-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1521790, encodeId=e1881521e9057, content=<a href='/topic/show?id=0b8f101e026a' target=_blank style='color:#2F92EE;'>#骨整合#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101702, encryptionId=0b8f101e026a, topicName=骨整合)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=03f111392267, createdName=bnurmamat, createdTime=Mon Feb 17 07:21:00 CST 2020, time=2020-02-17, status=1, ipAttribution=)]
    2020-02-17 楚秀娟
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