Zhiyong Chen, Yu Chen, Yang Wang, JiaJia Deng, Xin Wang, Qingqing Wang, Yuehua Liu, Jiandong Ding, Lin Yu
{"title":"具有分层多孔结构的聚醚醚酮种植体促进骨整合。","authors":"Zhiyong Chen, Yu Chen, Yang Wang, JiaJia Deng, Xin Wang, Qingqing Wang, Yuehua Liu, Jiandong Ding, Lin Yu","doi":"10.1186/s40824-023-00407-5","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Good osseointegration is the key to the long-term stability of bone implants. Thermoplastic polyetheretherketone (PEEK) has been widely used in orthopedics; however, its inherent biological inertia causes fibrous tissue to wrap its surface, which leads to poor osseointegration and thus greatly limits its clinical applications.</p><p><strong>Methods: </strong>Herein, we developed a facile yet effective surface modification strategy. A commonly used sulfonation coupled with \"cold pressing\" treatment in the presence of porogenic agent formed a three-dimensional hierarchical porous structure on PEEK surface. Subsequently, the effects of porous surface on the in vitro adhesion, proliferation and differentiation of rat bone marrow-derived mesenchymal stem cells (BMSCs) were evaluated. Finally, the osteoinduction and osseointegration of surface-porous PEEK implant were examined in the rat distal femoral defect model.</p><p><strong>Results: </strong>In vitro results showed that the surface modification did not significantly affect the mechanical performance and cytocompatibility of PEEK substance, and the porous structure on the modified PEEK substrate provided space for cellular ingrowth and enhanced osteogenic differentiation and mineralization of BMSCs. In vivo tests demonstrated that the surface-porous PEEK implant could effectively promote new bone formation and had higher bone-implant contact rate, thereby achieving good bone integration with the surrounding host bone. In addition, this modification technique was also successfully demonstrated on a medical PEEK interbody fusion cage.</p><p><strong>Conclusion: </strong>The present study indicates that topological morphology plays a pivotal role in determining implant osseointegration and this facile and effective modification strategy developed by us is expected to achieve practical applications quickly.</p>","PeriodicalId":9079,"journal":{"name":"Biomaterials Research","volume":null,"pages":null},"PeriodicalIF":11.3000,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10294516/pdf/","citationCount":"1","resultStr":"{\"title\":\"Polyetheretherketone implants with hierarchical porous structure for boosted osseointegration.\",\"authors\":\"Zhiyong Chen, Yu Chen, Yang Wang, JiaJia Deng, Xin Wang, Qingqing Wang, Yuehua Liu, Jiandong Ding, Lin Yu\",\"doi\":\"10.1186/s40824-023-00407-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Good osseointegration is the key to the long-term stability of bone implants. Thermoplastic polyetheretherketone (PEEK) has been widely used in orthopedics; however, its inherent biological inertia causes fibrous tissue to wrap its surface, which leads to poor osseointegration and thus greatly limits its clinical applications.</p><p><strong>Methods: </strong>Herein, we developed a facile yet effective surface modification strategy. A commonly used sulfonation coupled with \\\"cold pressing\\\" treatment in the presence of porogenic agent formed a three-dimensional hierarchical porous structure on PEEK surface. Subsequently, the effects of porous surface on the in vitro adhesion, proliferation and differentiation of rat bone marrow-derived mesenchymal stem cells (BMSCs) were evaluated. Finally, the osteoinduction and osseointegration of surface-porous PEEK implant were examined in the rat distal femoral defect model.</p><p><strong>Results: </strong>In vitro results showed that the surface modification did not significantly affect the mechanical performance and cytocompatibility of PEEK substance, and the porous structure on the modified PEEK substrate provided space for cellular ingrowth and enhanced osteogenic differentiation and mineralization of BMSCs. In vivo tests demonstrated that the surface-porous PEEK implant could effectively promote new bone formation and had higher bone-implant contact rate, thereby achieving good bone integration with the surrounding host bone. In addition, this modification technique was also successfully demonstrated on a medical PEEK interbody fusion cage.</p><p><strong>Conclusion: </strong>The present study indicates that topological morphology plays a pivotal role in determining implant osseointegration and this facile and effective modification strategy developed by us is expected to achieve practical applications quickly.</p>\",\"PeriodicalId\":9079,\"journal\":{\"name\":\"Biomaterials Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":11.3000,\"publicationDate\":\"2023-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10294516/pdf/\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biomaterials Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1186/s40824-023-00407-5\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Medicine\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomaterials Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1186/s40824-023-00407-5","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Medicine","Score":null,"Total":0}
Polyetheretherketone implants with hierarchical porous structure for boosted osseointegration.
Background: Good osseointegration is the key to the long-term stability of bone implants. Thermoplastic polyetheretherketone (PEEK) has been widely used in orthopedics; however, its inherent biological inertia causes fibrous tissue to wrap its surface, which leads to poor osseointegration and thus greatly limits its clinical applications.
Methods: Herein, we developed a facile yet effective surface modification strategy. A commonly used sulfonation coupled with "cold pressing" treatment in the presence of porogenic agent formed a three-dimensional hierarchical porous structure on PEEK surface. Subsequently, the effects of porous surface on the in vitro adhesion, proliferation and differentiation of rat bone marrow-derived mesenchymal stem cells (BMSCs) were evaluated. Finally, the osteoinduction and osseointegration of surface-porous PEEK implant were examined in the rat distal femoral defect model.
Results: In vitro results showed that the surface modification did not significantly affect the mechanical performance and cytocompatibility of PEEK substance, and the porous structure on the modified PEEK substrate provided space for cellular ingrowth and enhanced osteogenic differentiation and mineralization of BMSCs. In vivo tests demonstrated that the surface-porous PEEK implant could effectively promote new bone formation and had higher bone-implant contact rate, thereby achieving good bone integration with the surrounding host bone. In addition, this modification technique was also successfully demonstrated on a medical PEEK interbody fusion cage.
Conclusion: The present study indicates that topological morphology plays a pivotal role in determining implant osseointegration and this facile and effective modification strategy developed by us is expected to achieve practical applications quickly.
期刊介绍:
Biomaterials Research, the official journal of the Korean Society for Biomaterials, is an open-access interdisciplinary publication that focuses on all aspects of biomaterials research. The journal covers a wide range of topics including novel biomaterials, advanced techniques for biomaterial synthesis and fabrication, and their application in biomedical fields. Specific areas of interest include functional biomaterials, drug and gene delivery systems, tissue engineering, nanomedicine, nano/micro-biotechnology, bio-imaging, regenerative medicine, medical devices, 3D printing, and stem cell research. By exploring these research areas, Biomaterials Research aims to provide valuable insights and promote advancements in the biomaterials field.