Rapid formation of a continuous endothelial cell(EC)monolayer with healthy endothelium function on the luminal surface of vascular implants is imperative to improve the longtime patency of small-diameter vascular impl...Rapid formation of a continuous endothelial cell(EC)monolayer with healthy endothelium function on the luminal surface of vascular implants is imperative to improve the longtime patency of small-diameter vascular implants.In the present study,we combined the contact guidance effects of aligned nanofibers,which enhance EC adhesion and proliferation because of its similar fiber scale with native vascular basement membranes,and aligned microfibers,which could induce EC elongation effectively and allow ECs infiltration.It was followed by successive immobilization of collagen IV and laminin to fabricate a biomimetic basement membrane(BBM)with structural and compositional biomimicry.The hemolysis assay and platelet adhesion results showed that the BBM exhibited excellent hemocompatibility.Meanwhile,the adhered human umbilical vein endothelial cells(HUVECs)onto theBBMaligned along the orientation of the microfibers with an elongated morphology,and the data demonstrated that the BBM showed favorable effects on EC attachment,proliferation,and viability.The oriented EC monolayer formed on the BBM exhibited improved antithrombotic capability as indicated by higher production of nitric oxide and prostacyclin(PGI2).Furthermore,fluorescence images indicated that HUVECs could infiltrate into the BBM,implying theBBM’s ability to enhance transmural endothelialization.Hence,theBBMpossessed the properties to regulate ECbehaviors and allow transmural ingrowth,demonstrating the potential to be applied as the luminal surface of small-diameter vascular implants for rapid endothelialization.展开更多
目的:通过Meta分析比较益气补血法治疗肿瘤相关性贫血(非化疗相关)患者的有效性与安全性。方法:计算机检索PubMed,EMBASE,Cochrane Central Register of Controlled Trials,MEDLINE,CBM,CNKI;全面收集益气补血法治疗肿瘤相关性贫血(非...目的:通过Meta分析比较益气补血法治疗肿瘤相关性贫血(非化疗相关)患者的有效性与安全性。方法:计算机检索PubMed,EMBASE,Cochrane Central Register of Controlled Trials,MEDLINE,CBM,CNKI;全面收集益气补血法治疗肿瘤相关性贫血(非化疗相关)患者的临床随机对照试验,用Review Manager 5.0软件进行Meta分析。结果:最终纳入13项随机对照临床研究,共计1198例患者。Meta分析结果表明:益气补血法治疗组的血红蛋白水平显著高于对照组[MD=4.57,95%CI(1.38~7.76),P<0.0001,I 2=97%];益气补血法治疗组的总有效率显著高于对照组[RR=1.31,95%CI(1.18~1.46),P<0.0001,I 2=51%];益气补血法治疗组的不良反应发生率与对照组比较,差异无统计学意义[RR=0.54,95%CI(0.29~0.99),P=0.05,I 2=45%]。结论:益气补血法可有效治疗肿瘤相关性贫血(非化疗相关),可提高血红蛋白水平和临床总有效率,治疗效果优于促红细胞生成素(EPO)或铁剂,且不良反应少。展开更多
基金This work was supported by the Fundamental Research Funds for the Central Universities(Nos.2232019G-06 and 2232019A3-06)111 project(No.PB0719035)+1 种基金The authors at University of Wisconsin-Madison would like to acknowledge the partial support by the Wisconsin Institute for Discovery(WID),the NHLBI of the National Institutes of Health(No.U01HL134655)the Kuo K.and Cindy F.Wang Professorship.Chenglong Yu also acknowledged the fellowship from the China Scholarship Council(CSC)under the Grant CSC No.201906630070.
文摘Rapid formation of a continuous endothelial cell(EC)monolayer with healthy endothelium function on the luminal surface of vascular implants is imperative to improve the longtime patency of small-diameter vascular implants.In the present study,we combined the contact guidance effects of aligned nanofibers,which enhance EC adhesion and proliferation because of its similar fiber scale with native vascular basement membranes,and aligned microfibers,which could induce EC elongation effectively and allow ECs infiltration.It was followed by successive immobilization of collagen IV and laminin to fabricate a biomimetic basement membrane(BBM)with structural and compositional biomimicry.The hemolysis assay and platelet adhesion results showed that the BBM exhibited excellent hemocompatibility.Meanwhile,the adhered human umbilical vein endothelial cells(HUVECs)onto theBBMaligned along the orientation of the microfibers with an elongated morphology,and the data demonstrated that the BBM showed favorable effects on EC attachment,proliferation,and viability.The oriented EC monolayer formed on the BBM exhibited improved antithrombotic capability as indicated by higher production of nitric oxide and prostacyclin(PGI2).Furthermore,fluorescence images indicated that HUVECs could infiltrate into the BBM,implying theBBM’s ability to enhance transmural endothelialization.Hence,theBBMpossessed the properties to regulate ECbehaviors and allow transmural ingrowth,demonstrating the potential to be applied as the luminal surface of small-diameter vascular implants for rapid endothelialization.
