Biomed Mater:新型生物活性玻璃支架可用于机械负荷骨缺损的修复

2018-01-20 MedSci MedSci原创

由于45S5Bioglass®的低强度和高脆性,使用三维多孔45S5Bioglass®治疗需要负载骨缺陷支架仍然是一个巨大的挑战。因此,在低温烧结条件下,在添加和不添加4%低熔点ZnO/B2O3(ZB)生物活性玻璃作为增强剂以及使用350-或500μm石蜡微球作为致孔剂的情况下制造45S5 5Bioglass®衍生的生物活性玻璃-陶瓷(BGC)多孔支架。支架的孔结构表征表明,含有4%ZB的支架具有

由于45S5Bioglass®的低强度和高脆性,使用三维多孔45S5Bioglass®治疗需要负载骨缺陷支架仍然是一个巨大的挑战。因此,在低温烧结条件下,在添加和不添加4%低熔点ZnO/B2O3(ZB)生物活性玻璃作为增强剂以及使用350-或500μm石蜡微球作为致孔剂的情况下制造45S5 5Bioglass®衍生的生物活性玻璃-陶瓷(BGC)多孔支架。

支架的孔结构表征表明,含有4%ZB的支架具有非常好的大孔结构,孔径大小为〜313和〜448μm,70%以上孔隙的强度较好(> 15 MPa),比没有ZB和350μm 石蜡微球制备的支架高出约4倍。添加4%ZB时,孔隙率降低,而相互作用的孔隙率(> 50μm)随着致孔剂尺寸从350增加到500μm而增加。体内研究显示,含有4%ZB和500μm致孔剂的支架强度更高,对临界尺寸的股骨缺损中的成骨能力特别有利,伴随着骨生长加速(6-18周)材料本身出现轻微的再吸收。相比之下,具有较小孔径的支架在植入6-12周后表现出低水平的新骨生长(<32%)。

综上所述,该研究结果表明,这种45S5Bioglass®衍生的BGC支架在临床中具有较大应用前景,特别是对于需要机械负荷的骨缺损。

原始出处:

Zhang L, Ke X, Lin L, et al., Systematic evaluation of the osteogenic capacity of low-melting bioactive glass-reinforced 45S5 Bioglass porous scaffolds in rabbit femoral defects. Biomed Mater. 2017 Jun 7;12(3):035010. doi: 10.1088/1748-605X/aa6b5c.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1917884, encodeId=d417191e884a9, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Oct 10 15:07:00 CST 2018, time=2018-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281405, encodeId=43fe281405dd, content=非常好的文章.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Tue Jan 23 23:50:10 CST 2018, time=2018-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2019061, encodeId=a0ce2019061fc, content=<a href='/topic/show?id=e87a612e7bc' target=_blank style='color:#2F92EE;'>#机械负荷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61277, encryptionId=e87a612e7bc, topicName=机械负荷)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f13d475, createdName=mashirong, createdTime=Fri Jul 06 15:07:00 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419248, encodeId=66251419248f0, content=<a href='/topic/show?id=2e2e10182602' target=_blank style='color:#2F92EE;'>#骨缺损#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101826, encryptionId=2e2e10182602, topicName=骨缺损)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=51173492599, createdName=lfcmxl, createdTime=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608461, encodeId=a404160846192, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, 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=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2005170, encodeId=917920051e0ee, content=<a href='/topic/show?id=af6e6938483' target=_blank style='color:#2F92EE;'>#生物活性玻璃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69384, encryptionId=af6e6938483, topicName=生物活性玻璃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c9df476, createdName=fyxzlh, createdTime=Fri Mar 23 12:07:00 CST 2018, time=2018-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280383, encodeId=eaca28038392, content=学习了.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Jan 20 15:20:05 CST 2018, time=2018-01-20, status=1, ipAttribution=)]
    2018-10-10 sunylz
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    2018-01-23 天涯183

    非常好的文章.学习了

    0

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    2018-01-22 lfcmxl
  5. [GetPortalCommentsPageByObjectIdResponse(id=1917884, encodeId=d417191e884a9, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Oct 10 15:07:00 CST 2018, time=2018-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281405, encodeId=43fe281405dd, content=非常好的文章.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Tue Jan 23 23:50:10 CST 2018, time=2018-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2019061, encodeId=a0ce2019061fc, content=<a href='/topic/show?id=e87a612e7bc' target=_blank style='color:#2F92EE;'>#机械负荷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61277, encryptionId=e87a612e7bc, topicName=机械负荷)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f13d475, createdName=mashirong, createdTime=Fri Jul 06 15:07:00 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419248, encodeId=66251419248f0, content=<a href='/topic/show?id=2e2e10182602' target=_blank style='color:#2F92EE;'>#骨缺损#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101826, encryptionId=2e2e10182602, topicName=骨缺损)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=51173492599, createdName=lfcmxl, createdTime=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608461, encodeId=a404160846192, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, 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=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2005170, encodeId=917920051e0ee, content=<a href='/topic/show?id=af6e6938483' target=_blank style='color:#2F92EE;'>#生物活性玻璃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69384, encryptionId=af6e6938483, topicName=生物活性玻璃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c9df476, createdName=fyxzlh, createdTime=Fri Mar 23 12:07:00 CST 2018, time=2018-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280383, encodeId=eaca28038392, content=学习了.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Jan 20 15:20:05 CST 2018, time=2018-01-20, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1917884, encodeId=d417191e884a9, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Oct 10 15:07:00 CST 2018, time=2018-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281405, encodeId=43fe281405dd, content=非常好的文章.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Tue Jan 23 23:50:10 CST 2018, time=2018-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2019061, encodeId=a0ce2019061fc, content=<a href='/topic/show?id=e87a612e7bc' target=_blank style='color:#2F92EE;'>#机械负荷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61277, encryptionId=e87a612e7bc, topicName=机械负荷)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f13d475, createdName=mashirong, createdTime=Fri Jul 06 15:07:00 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419248, encodeId=66251419248f0, content=<a href='/topic/show?id=2e2e10182602' target=_blank style='color:#2F92EE;'>#骨缺损#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101826, encryptionId=2e2e10182602, topicName=骨缺损)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=51173492599, createdName=lfcmxl, createdTime=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608461, encodeId=a404160846192, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, 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=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2005170, encodeId=917920051e0ee, content=<a href='/topic/show?id=af6e6938483' target=_blank style='color:#2F92EE;'>#生物活性玻璃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69384, encryptionId=af6e6938483, topicName=生物活性玻璃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c9df476, createdName=fyxzlh, createdTime=Fri Mar 23 12:07:00 CST 2018, time=2018-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280383, encodeId=eaca28038392, content=学习了.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Jan 20 15:20:05 CST 2018, time=2018-01-20, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1917884, encodeId=d417191e884a9, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Oct 10 15:07:00 CST 2018, time=2018-10-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=281405, encodeId=43fe281405dd, content=非常好的文章.学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Tue Jan 23 23:50:10 CST 2018, time=2018-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2019061, encodeId=a0ce2019061fc, content=<a href='/topic/show?id=e87a612e7bc' target=_blank style='color:#2F92EE;'>#机械负荷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61277, encryptionId=e87a612e7bc, topicName=机械负荷)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f13d475, createdName=mashirong, createdTime=Fri Jul 06 15:07:00 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1419248, encodeId=66251419248f0, content=<a href='/topic/show?id=2e2e10182602' target=_blank style='color:#2F92EE;'>#骨缺损#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101826, encryptionId=2e2e10182602, topicName=骨缺损)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=51173492599, createdName=lfcmxl, createdTime=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1608461, encodeId=a404160846192, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, 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=Mon Jan 22 06:07:00 CST 2018, time=2018-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2005170, encodeId=917920051e0ee, content=<a href='/topic/show?id=af6e6938483' target=_blank style='color:#2F92EE;'>#生物活性玻璃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69384, encryptionId=af6e6938483, topicName=生物活性玻璃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c9df476, createdName=fyxzlh, createdTime=Fri Mar 23 12:07:00 CST 2018, time=2018-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=280383, encodeId=eaca28038392, content=学习了.谢谢分享., beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Jan 20 15:20:05 CST 2018, time=2018-01-20, status=1, ipAttribution=)]
    2018-01-20 1e0f8808m18(暂无匿称)

    学习了.谢谢分享.

    0