Baidu
map

Int J Nanomed:新型纳米材料可更好的促进骨缺损的修复

2019-10-03 不详 网络

在壳聚糖(CS)/丝素蛋白(SF)纳米纤维膜支架(NMS)中掺入纳米羟基磷灰石(nHAP)可能会提供一个有利的微环境,以更好的模仿自然的骨组织生理学,并促进植入的细胞群的骨增生。在这项研究中,我们通过在电纺丝步骤前原位共混10%或30%nHAP制备了原始CS / SF NMS,包含原纤维内nHAP的复合CS/SF/nHAP NMS,以及通过以下方法制备了包含原纤维nHAP的复合CS / SF /

在壳聚糖(CS)/丝素蛋白(SF)纳米纤维膜支架(NMS)中掺入纳米羟基磷灰石(nHAP)可能会提供一个有利的微环境,以更好的模仿自然的骨组织生理学,并促进植入的细胞群的骨增生。

在这项研究中,我们通过在电纺丝步骤前原位共混10%或30%nHAP制备了原始CS / SF NMS,包含原纤维内nHAP的复合CS/SF/nHAP NMS,以及通过以下方法制备了包含原纤维nHAP的复合CS / SF / nHAP NMS:通过可选的浸泡表面矿化沉积30%的nHAP。我们研究了掺入HAP纳米粒子对原始和复合NMS的理化性质的影响。我们通过热重分析(TGA),X射线衍射(XRD)和扫描电子显微镜(SEM)证实了复合纳米纤维膜中〜30 nm nHAP的存在,该纳米纤维嵌入或暴露在纳米纤维中。尽管如此,替代性的浸透表面矿化方法极大地影响了NMS的机械性能,杨氏模量和最终最大应力分别降低了88%和94%。

体外细胞培养实验中,我们调查了nHAP含量和位置对人骨髓间充质干细胞(hMSCs)增殖和成骨分化的影响。原始和复合NMS之间hMSCs的增殖没有显著差异。然而,发现hMSCs的成骨分化程度与nHAP在NMS中的含量呈正相关,而其在纳米纤维中的位置则没有那么重要。体内实验是通过在裸鼠中通过原位混合和皮下植入制备的CS/SF/30%nHAP NMS中接种的hMSC进行的。植入后1和2个月的微计算机断层扫描图像以及取回的hMSCs/NMS构建体的组织学免疫组织化学分析表明,NMS具有骨再生的潜力,可以作为骨组织工程的有希望的支架。

原始出处:

Lai GJ, Shalumon KT, et al., Response of human mesenchymal stem cells to intrafibrillar nanohydroxyapatite content and extrafibrillar nanohydroxyapatite in biomimetic chitosan/silk fibroin/nanohydroxyapatite nanofibrous membrane scaffolds. Int J Nanomedicine. 2015 Jan 12;10:567-84. doi: 10.2147/IJN.S73780. eCollection 2015.

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (3)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1419333, encodeId=e4f3141933377, 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=73, 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=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479487, encodeId=932c14e9487cf, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610017, encodeId=2d77161001e70, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, 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 Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=)]
    2019-10-05 lfcmxl
  2. [GetPortalCommentsPageByObjectIdResponse(id=1419333, encodeId=e4f3141933377, 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=73, 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=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479487, encodeId=932c14e9487cf, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610017, encodeId=2d77161001e70, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, 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 Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1419333, encodeId=e4f3141933377, 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=73, 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=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479487, encodeId=932c14e9487cf, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Sat Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610017, encodeId=2d77161001e70, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, 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 Oct 05 13:42:00 CST 2019, time=2019-10-05, status=1, ipAttribution=)]
Baidu
map
Baidu
map
Baidu
map