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J Tissue Eng Regen Med:新型水凝胶可有效修复恒河猴腰椎缺损

2019-11-28 不详 网络

致密的生物材料在骨置换中起着重要的作用。但是,它不能诱导骨细胞迁移到移植材料中。在本研究中,研究人员设计并制备了由多孔梯度羟基磷灰石/氧化锆复合物(PGHC)和明胶/壳聚糖缓释水凝胶组成的新型骨移植替代物(BGS),其中包含骨形态发生蛋白2和骨间充质干细胞以修复腰椎缺陷。通过扫描电子显微镜评估的BGS的形态特征表明,它具有三维网络结构,在接枝材料的表面和孔的内部均具有均匀分布的壳聚糖微球。然后,将

致密的生物材料在骨置换中起着重要的作用。但是,它不能诱导骨细胞迁移到移植材料中。在本研究中,研究人员设计并制备了由多孔梯度羟基磷灰石/氧化锆复合物(PGHC)和明胶/壳聚糖缓释水凝胶组成的新型骨移植替代物(BGS),其中包含骨形态发生蛋白2和骨间充质干细胞以修复腰椎缺陷。

通过扫描电子显微镜评估的BGS的形态特征表明,它具有三维网络结构,在接枝材料的表面和孔的内部均具有均匀分布的壳聚糖微球。然后,将BGS(A组),PGHC(B组)或自体骨(C组)植入总共24只健康恒河猴的腰椎椎体缺损中。 8周和16周后,对腰椎进行前后X线照片,显微计算机断层扫描,组织形态测定,生物力学测试和生化测试,以检测骨基质标志物,包括I型胶原蛋白,骨钙蛋白,骨桥蛋白,碱性成纤维细胞生长因子,碱性磷酸酶和血管进行内皮生长因子检查以检查BGS和PGHC的修复功效。

结果显示,BGS具有很好的修复恒河猴腰椎缺损的能力。X线,显微计算机断层扫描和组织形态学表征显示,BGS孔内部新形成的骨量明显高于PGHC。生物力学测试结果表明,PGHC植入物的椎体抗压强度低于其他植入物。逆转录聚合酶链反应和蛋白质印迹分析表明,BGS植入物中骨骼相关蛋白的表达明显高于PGHC植入物中。BGS显示出与自体骨相似的修复效果。

因此,该研究结果表明,在椎骨缺损修复中使用BGS似乎很有希望。

原始出处:

Shao RX, Quan RF, et al., Effects of a bone graft substitute consisting of porous gradient HA/ZrO2 and gelatin/chitosan slow-release hydrogel containing BMP-2 and BMSCs on lumbar vertebral defect repair in rhesus monkey. J Tissue Eng Regen Med. 2018 Mar;12(3):e1813-e1825. doi: 10.1002/term.2601. Epub 2017 Dec 26.

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    2020-06-29 xuyu
  2. [GetPortalCommentsPageByObjectIdResponse(id=1911390, encodeId=8ea219113907a, content=<a href='/topic/show?id=df471e4882e' target=_blank style='color:#2F92EE;'>#Tissue#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17488, encryptionId=df471e4882e, topicName=Tissue)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8f5b299, createdName=xuyu, createdTime=Mon Jun 29 09:49:00 CST 2020, time=2020-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081580, encodeId=c2c72081580fb, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Sun Dec 01 11:49:00 CST 2019, time=2019-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1272133, encodeId=290112e213350, content=<a href='/topic/show?id=cd1a854340b' target=_blank style='color:#2F92EE;'>#腰椎#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=85434, encryptionId=cd1a854340b, topicName=腰椎)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308070, encodeId=4ea913080e0cf, content=<a href='/topic/show?id=edd364149bc' target=_blank style='color:#2F92EE;'>#水凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64149, encryptionId=edd364149bc, topicName=水凝胶)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=47c5349, createdName=tastas, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461048, encodeId=9240146104803, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610150, encodeId=f023161015046, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, 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=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=)]
    2019-12-01 spoonycyy
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  4. [GetPortalCommentsPageByObjectIdResponse(id=1911390, encodeId=8ea219113907a, content=<a href='/topic/show?id=df471e4882e' target=_blank style='color:#2F92EE;'>#Tissue#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17488, encryptionId=df471e4882e, topicName=Tissue)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8f5b299, createdName=xuyu, createdTime=Mon Jun 29 09:49:00 CST 2020, time=2020-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081580, encodeId=c2c72081580fb, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Sun Dec 01 11:49:00 CST 2019, time=2019-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1272133, encodeId=290112e213350, content=<a href='/topic/show?id=cd1a854340b' target=_blank style='color:#2F92EE;'>#腰椎#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=85434, encryptionId=cd1a854340b, topicName=腰椎)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308070, encodeId=4ea913080e0cf, content=<a href='/topic/show?id=edd364149bc' target=_blank style='color:#2F92EE;'>#水凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64149, encryptionId=edd364149bc, topicName=水凝胶)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=47c5349, createdName=tastas, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461048, encodeId=9240146104803, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610150, encodeId=f023161015046, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, 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=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=)]
    2019-11-30 tastas
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1911390, encodeId=8ea219113907a, content=<a href='/topic/show?id=df471e4882e' target=_blank style='color:#2F92EE;'>#Tissue#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17488, encryptionId=df471e4882e, topicName=Tissue)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8f5b299, createdName=xuyu, createdTime=Mon Jun 29 09:49:00 CST 2020, time=2020-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081580, encodeId=c2c72081580fb, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Sun Dec 01 11:49:00 CST 2019, time=2019-12-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1272133, encodeId=290112e213350, content=<a href='/topic/show?id=cd1a854340b' target=_blank style='color:#2F92EE;'>#腰椎#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=85434, encryptionId=cd1a854340b, topicName=腰椎)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308070, encodeId=4ea913080e0cf, content=<a href='/topic/show?id=edd364149bc' target=_blank style='color:#2F92EE;'>#水凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64149, encryptionId=edd364149bc, topicName=水凝胶)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=47c5349, createdName=tastas, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461048, encodeId=9240146104803, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610150, encodeId=f023161015046, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, 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=Sat Nov 30 12:49:00 CST 2019, time=2019-11-30, status=1, ipAttribution=)]
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