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ACS Appl Mater Interfaces:Ga-MBG/CHT或可作为新的止血剂应用

2017-11-26 MedSci MedSci原创

基于壳聚糖的止血剂是即刻止血的一种有希望的候选者。然而,这种止血剂具有一些缺点,需要进一步改进以达到所需的止血效果。在此基础上,研究人员通过冻干法制备了一系列含1%Ga2O3的介孔生物活性玻璃-壳聚糖复合支架(Ga-MBG/CHT),研究了不同浓度的Ga-MBG(10,30和50wt%)对CHT支架的止血功能,并与当前市售的壳聚糖涂覆的止血纱布Celox Rapid纱布(CXR)相比较。结果显示,

基于壳聚糖的止血剂是即刻止血的一种有希望的候选者。然而,这种止血剂具有一些缺点,需要进一步改进以达到所需的止血效果。

在此基础上,研究人员通过冻干法制备了一系列含1%Ga2O3的介孔生物活性玻璃-壳聚糖复合支架(Ga-MBG/CHT),研究了不同浓度的Ga-MBG(10,30和50wt%)对CHT支架的止血功能,并与当前市售的壳聚糖涂覆的止血纱布Celox Rapid纱布(CXR)相比较。

结果显示,与CXR相比,本研究所制备的支架为> 79%的孔隙率,且吸水性增加。凝血研究的结果显示,与CXR相比,纯CHT和复合支架的止血性能更优。此外,与纯CHT支架相比,Ga-MBG含量最高(50 wt%)的复合支架在血栓形成、凝血和血小板粘附及聚集方面的能力更强。

时间测定法和Alamar Blue测定法评估了复合支架的抗菌功效和生物相容性。结果显示,50%Ga-MBG/CHT的抗菌效果较CHT和CXR更优。细胞活力结果也表明,Ga-MBG/CHT复合支架具有良好的生物相容性,即使在50wt%Ga-MBG负载下也能促进人真皮成纤维细胞的扩散和增殖。

综上所述,这些结果表明,Ga-MBG/CHT支架或可更好的止血,可用于危急情况下的止血。

原始出处:


Pourshahrestani S, Zeimaran E, Kadri NA, Gargiulo N, et al., Potency and Cytotoxicity of a Novel Gallium-Containing Mesoporous Bioactive Glass/Chitosan Composite Scaffold as Hemostatic Agents. ACS Appl Mater Interfaces. 2017 Sep 20;9(37):31381-31392. doi: 10.1021/acsami.7b07769.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1956659, encodeId=9b69195665978, content=<a href='/topic/show?id=7647e210ac' target=_blank style='color:#2F92EE;'>#FAC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7210, encryptionId=7647e210ac, topicName=FAC)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/1103841572/B389FA68ECBF51BE2FE14093CF61F6AE/100, createdBy=eb8e2500096, createdName=夏天与十三菇凉, createdTime=Thu May 31 11:29:00 CST 2018, time=2018-05-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1655809, encodeId=6e6b1655809fd, content=<a href='/topic/show?id=2a011829d7' target=_blank style='color:#2F92EE;'>#ACE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1829, encryptionId=2a011829d7, topicName=ACE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=635024767990, createdName=shanyongle, createdTime=Thu Jan 25 14:29:00 CST 2018, time=2018-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1263035, encodeId=7b8d126303598, content=<a href='/topic/show?id=ebb5631e076' target=_blank style='color:#2F92EE;'>#止血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=63170, encryptionId=ebb5631e076, topicName=止血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7770, createdName=jeanqiuqiu, createdTime=Tue Nov 28 11:29:00 CST 2017, time=2017-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1279209, encodeId=495212e92094b, content=<a href='/topic/show?id=316d1882bc' target=_blank style='color:#2F92EE;'>#ACS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1882, encryptionId=316d1882bc, topicName=ACS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Tue Nov 28 11:29:00 CST 2017, time=2017-11-28, status=1, ipAttribution=)]
    2018-01-25 shanyongle
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    2017-11-28 jeanqiuqiu
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    2017-11-28 yaanren
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