Ann Transl Med:聚多巴胺涂层+3D打印所制备的多孔Ti6Al4V支架可有效促进种植体的早期成骨

2019-07-19 sunshine 译 MedSci原创

钛植入物广泛用于整形外科和牙科领域超过30年,具有稳定的物理化学性质和机械强度。然而,钛氧化层和高弹性模量经常导致早期植入失败。在这项研究中,我们提出了一种简单的多孔结构设计,以尽量减少支架与天然骨组织之间的差异,并引入一步反应,在钛表面形成聚多巴胺(PDA)层,以改善成骨作用。通过添加制造制备孔径为400μm,孔隙率为44.66%的多孔支架。通过在Ti6Al4V膜上接种MC3T3-E1细胞15天

钛植入物广泛用于整形外科和牙科领域超过30年,具有稳定的物理化学性质和机械强度。然而,钛氧化层和高弹性模量经常导致早期植入失败。

在这项研究中,我们提出了一种简单的多孔结构设计,以尽量减少支架与天然骨组织之间的差异,并引入一步反应,在钛表面形成聚多巴胺(PDA)层,以改善成骨作用。通过添加制造制备孔径为400μm,孔隙率为44.66%的多孔支架。通过在Ti6Al4V膜上接种MC3T3-E1细胞15天来测试细胞行为。然后通过有限元(FE)方法分析生物力学性质,并通过在兔中植入支架5周来评估体内成骨作用。

结果显示,多巴胺浸泡40分钟可以显著改善细胞粘附。所提出的多孔结构设计方法可以避免PDA涂层支架内的应力屏蔽效应和骨生长,这在骨愈合过程的早期阶段就可以观察到。

总之,该研究结果表明,PDA涂层方法在促进早期成骨方面是有效的,并且易于操作,并且可以有助于钛植入物的未来临床应用。

原始出处:

Li L, Li Y, et al., Polydopamine coating promotes early osteogenesis in 3D printing porous Ti6Al4V scaffolds. Ann Transl Med. 2019 Jun;7(11):240. doi: 10.21037/atm.2019.04.79.

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    2019-11-05 bsmagic9140
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    2019-10-16 huangdf
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  6. [GetPortalCommentsPageByObjectIdResponse(id=2067446, encodeId=28e2206e4462f, content=<a href='/topic/show?id=d0841e75535' target=_blank style='color:#2F92EE;'>#Transl#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17755, encryptionId=d0841e75535, topicName=Transl)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/101173734/363C99735735B7F4CB11D5F78F580525/100, createdBy=aab22500211, createdName=ms3025846204744509, createdTime=Tue Mar 10 17:41:00 CST 2020, time=2020-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1657197, encodeId=fcdb165e19719, content=<a href='/topic/show?id=3ca31e71903' target=_blank style='color:#2F92EE;'>#TRA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17719, encryptionId=3ca31e71903, topicName=TRA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=757b24868428, createdName=bsmagic9140, createdTime=Tue Nov 05 14:41:00 CST 2019, time=2019-11-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1702099, encodeId=a29c1e020999e, content=<a href='/topic/show?id=04b9e4784aa' target=_blank style='color:#2F92EE;'>#种植#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74784, encryptionId=04b9e4784aa, topicName=种植)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=47e130405619, createdName=huangdf, createdTime=Wed Oct 16 04:41:00 CST 2019, time=2019-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1336130, encodeId=ae4f1336130cf, content=<a href='/topic/show?id=792612047e' target=_blank style='color:#2F92EE;'>#3D#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1204, encryptionId=792612047e, topicName=3D)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/pSGl6CJeZ2PzWxdhCtrvv4U9Q281RV8e0AKmlB5ib93DibbiaRyOzmkCdz5F04cbfX5RGOpG4dOXvuQW1fumibVeBg/132, createdBy=fc342500110, createdName=ms9833124466084992, createdTime=Sun Jul 21 07:41:00 CST 2019, time=2019-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1343922, encodeId=65101343922db, content=<a href='/topic/show?id=d512e47853f' target=_blank style='color:#2F92EE;'>#种植体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74785, encryptionId=d512e47853f, topicName=种植体)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/TnzXXl41yf6V8fHrDb5JdtxOgpaY6vplUhHtL8BzDh1xMtcap9H1IOlE8umxPGovhIuVkeGTY26eNUFCFaOheQ/132, createdBy=29702500197, createdName=ms6279672939590805, createdTime=Sun Jul 21 07:41:00 CST 2019, time=2019-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352188, encodeId=be9d1352188e4, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54093, encryptionId=e95954093cd, topicName=成骨)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Sun Jul 21 07:41:00 CST 2019, time=2019-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609873, encodeId=7bc016098e328, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, 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=Sun Jul 21 07:41:00 CST 2019, time=2019-07-21, status=1, ipAttribution=)]
    2019-07-21 zhaojie88
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