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ACS Omega:新型可降解生物支架可有效控制药物的释放

2018-07-20 MedSci MedSci原创

我们开发了基于半乳糖醇/己二酸的纳米复合材料,其摩尔比为1:1,掺杂了不同重量百分比的氧化石墨烯(GO)。本研究旨在分析由于在细胞反应中向聚合物中加入GO而实现的增强的物理化学性质的影响。通过傅里叶变换红外光谱确认聚合物和复合物的化学结构。扫描电子显微镜显示GO在聚合物中的均匀分布。差示扫描量热法显示纳米复合材料的玻璃化转变温度没有明显变化。动态力学分析表明,随着向聚合物中加入GO 从0.5增加至

我们开发了基于半乳糖醇/己二酸的纳米复合材料,其摩尔比为1:1,掺杂了不同重量百分比的氧化石墨烯(GO)。本研究旨在分析由于在细胞反应中向聚合物中加入GO而实现的增强的物理化学性质的影响。

通过傅里叶变换红外光谱确认聚合物和复合物的化学结构。扫描电子显微镜显示GO在聚合物中的均匀分布。差示扫描量热法显示纳米复合材料的玻璃化转变温度没有明显变化。动态力学分析表明,随着向聚合物中加入GO 从0.5增加至1wt%,杨氏模量增加,并且向聚酯中加入2wt%GO,模量显著降低。接触角分析表明,向聚酯中加入GO后,亲水性略有增加。

水解降解和染料释研究结果表明,降解和释放随着GO重量百分比的增加而降低,但随着2wt%GO聚合物的增加而降低。降解速率和染料释放速率分别遵循一级和Higuchi动力学。最初的体外细胞相容性研究显示出最小的毒性。矿化研究证明这些纳米复合材料刺激了骨生成。

综上所述,该研究对于设计用作可控释放的支架的可生物降解聚合物具有重要意义。

原始出处:


Natarajan J, Madras G, Chatterjee K. Development of Graphene Oxide-/Galactitol Polyester-Based Biodegradable Composites for Biomedical Applications. ACS Omega. 2017 Sep 30;2(9):5545-5556. doi: 10.1021/acsomega.7b01139. Epub 2017 Sep 7.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1279273, encodeId=5f1412e9273d0, content=<a href='/topic/show?id=316d1882bc' target=_blank style='color:#2F92EE;'>#ACS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1882, encryptionId=316d1882bc, topicName=ACS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Sun Jul 22 12:59:00 CST 2018, time=2018-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333056, encodeId=5aeb3330564f, content=一起学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/TDiaAWyicHgedzX3wKo3qcxudVJib7AfibfvNeufHRF2jG3Bw8MmZyWjIhtBV1mpJI7Sy9n7RcBKK5t3CuOKuOFxkg/0, createdBy=dd702206933, createdName=wzb521zf, createdTime=Sat Jul 21 05:55:20 CST 2018, time=2018-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333023, encodeId=d45d33302326, content=厉害了我的妹, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sat Jul 21 00:29:58 CST 2018, time=2018-07-21, status=1, ipAttribution=)]
    2018-07-22 yaanren
  2. [GetPortalCommentsPageByObjectIdResponse(id=1279273, encodeId=5f1412e9273d0, content=<a href='/topic/show?id=316d1882bc' target=_blank style='color:#2F92EE;'>#ACS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1882, encryptionId=316d1882bc, topicName=ACS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Sun Jul 22 12:59:00 CST 2018, time=2018-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333056, encodeId=5aeb3330564f, content=一起学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/TDiaAWyicHgedzX3wKo3qcxudVJib7AfibfvNeufHRF2jG3Bw8MmZyWjIhtBV1mpJI7Sy9n7RcBKK5t3CuOKuOFxkg/0, createdBy=dd702206933, createdName=wzb521zf, createdTime=Sat Jul 21 05:55:20 CST 2018, time=2018-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333023, encodeId=d45d33302326, content=厉害了我的妹, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sat Jul 21 00:29:58 CST 2018, time=2018-07-21, status=1, ipAttribution=)]
    2018-07-21 wzb521zf

    一起学习学习

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1279273, encodeId=5f1412e9273d0, content=<a href='/topic/show?id=316d1882bc' target=_blank style='color:#2F92EE;'>#ACS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1882, encryptionId=316d1882bc, topicName=ACS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Sun Jul 22 12:59:00 CST 2018, time=2018-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333056, encodeId=5aeb3330564f, content=一起学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/TDiaAWyicHgedzX3wKo3qcxudVJib7AfibfvNeufHRF2jG3Bw8MmZyWjIhtBV1mpJI7Sy9n7RcBKK5t3CuOKuOFxkg/0, createdBy=dd702206933, createdName=wzb521zf, createdTime=Sat Jul 21 05:55:20 CST 2018, time=2018-07-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=333023, encodeId=d45d33302326, content=厉害了我的妹, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sat Jul 21 00:29:58 CST 2018, time=2018-07-21, status=1, ipAttribution=)]
    2018-07-21 飛歌

    厉害了我的妹

    0

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