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Biomaterials:聚多巴胺涂层固定纳米Cu-MOFs可防止支架植入后的血栓形成

2019-03-21 不详 网络

在植入早期,血栓形成、急性炎症和不可控制的平滑肌细胞(SMC)增殖使支架内再狭窄恶化。调整支架表面可以抑制血栓形成,内膜增生,并加速再内皮化。原位一氧化氮(NO)的产生是一种改善抗凝血和抗增生能力的有前途的方法。铜基金属有机骨架作为NO生成催化剂显示出巨大的潜力,铜离子(Cu2 +)被证明可促进内皮细胞(ECs)的生长。在此,通过使用聚多巴胺作为接头和涂层基质,将纳米级铜基金属有机骨架(纳米Cu-

在植入早期,血栓形成、急性炎症和不可控制的平滑肌细胞(SMC)增殖使支架内再狭窄恶化。调整支架表面可以抑制血栓形成,内膜增生,并加速再内皮化。原位一氧化氮(NO)的产生是一种改善抗凝血和抗增生能力的有前途的方法。铜基金属有机骨架作为NO生成催化剂显示出巨大的潜力,铜离子(Cu2 +)被证明可促进内皮细胞(ECs)的生长。

在此,通过使用聚多巴胺作为接头和涂层基质,将纳米级铜基金属有机骨架(纳米Cu-MOF)固定在钛表面上,用于同时进行一氧化氮(NO)催化产生和Cu 2+递送。纳米Cu-MOFs固定的涂层显示出理想的NO释放和适应性Cu 2+递送。这种包衣通过NO-cGMP信号传导通路抑制血小板聚集和活化,并且在离体体外循环模型中显着减少血栓形成。NO释放和Cu2 +递送显示出协同作用以促进EC增殖。此外,通过纳米Cu-MOFs固定化涂层抑制SMC和巨噬细胞增殖,从而减少体内新内膜增生。

总的来说,这种生物相容性涂层便于血管支架的表面改性,并有效地防止晚期支架血栓形成和与支架植入相关的支架内再狭窄。

原始出处:

Fan Y, Zhang Y, et al., Immobilization of nano Cu-MOFs with polydopamine coating for adaptable gasotransmitter generation and copper ion delivery on cardiovascular stents. Biomaterials. 2019 Mar 9;204:36-45. doi: 10.1016/j.biomaterials.2019.03.007. 

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    2019-12-17 爆笑小医
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    2019-10-27 sunylz
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    2019-07-12 liao1627
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1968622, encodeId=10e5196862236, content=<a href='/topic/show?id=e18a132e014' target=_blank style='color:#2F92EE;'>#OFS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13270, encryptionId=e18a132e014, topicName=OFS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue Dec 17 19:59:00 CST 2019, time=2019-12-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2050029, encodeId=2da9205002960, content=<a href='/topic/show?id=cbdd3451e3' target=_blank style='color:#2F92EE;'>#Biomaterials#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3451, encryptionId=cbdd3451e3, topicName=Biomaterials)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8e0333, createdName=zhangyxzsh, createdTime=Sun Dec 15 01:59:00 CST 2019, time=2019-12-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918584, encodeId=2b47191858435, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Sun Oct 27 05:59:00 CST 2019, time=2019-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1643035, encodeId=70871643035fb, content=<a href='/topic/show?id=53ea120e955' target=_blank style='color:#2F92EE;'>#MOF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12079, encryptionId=53ea120e955, topicName=MOF)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8b0b23064911, createdName=liao1627, createdTime=Fri Jul 12 17:59:00 CST 2019, time=2019-07-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1935167, encodeId=a027193516e85, content=<a href='/topic/show?id=49455e1086e' target=_blank style='color:#2F92EE;'>#支架植入#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57108, encryptionId=49455e1086e, topicName=支架植入)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=70fe497, createdName=paperyu, createdTime=Tue May 14 05:59:00 CST 2019, time=2019-05-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1520564, encodeId=c5dd152056433, content=<a href='/topic/show?id=7a736264553' target=_blank style='color:#2F92EE;'>#植入#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62645, encryptionId=7a736264553, topicName=植入)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=832411313664, createdName=jiyangfei, createdTime=Sat Mar 23 03:59:00 CST 2019, time=2019-03-23, status=1, ipAttribution=)]
    2019-03-23 jiyangfei
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