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Novel hybrid biocomposites for tendon grafts:The addition of silk to polydioxanone and poly(lactide-co-caprolactone)enhances material properties,in vitro and in vivo biocompatibility

引用

Bioactive Materials 2023年第7期25卷 291-306页

作者： Behzad Shiroud Heidari Emma Muiños Lopez Emma Harrington Rui Ruan Peilin Chen Seyed Mohammad Davachi Benjamin Allardyce Rangam Rajkhowa Rodney Dilley Froilán Granero-Moltó Elena M.De-Juan-Pardo Minghao Zheng Barry Doyle Harry Perkins Institute of Medical Research QEII Medical CentreNedlands and the UWA Centre for Medical ResearchThe University of Western AustraliaPerthAustralia School of Engineering The University of Western AustraliaPerthAustralia Australian Research Council Centre for Personalised Therapeutics Technologies Australia Cell Therapy Area Centro de Investigaci´on M´edica AplicadaIDISNAUniversidad de NavarraPamplonaSpain Centre for Orthopaedic Research Faculty of Health and Medical SciencesThe University of Western AustraliaPerthAustralia Department of Biology and Chemistry Texas A&M International UniversityLaredoTXUSA Institute for Frontier Materials Deakin UniversityGeelongVIC3216Australia Perron Institute for Neurological and Translational Science NedlandsWestern AustraliaAustralia

Biopolymers play a critical role as scaffolds used in tendon and ligament(TL)*** advanced biopolymer materials have been proposed with optimised mechanical properties,biocompatibility,degradation,and processability,it is still challenging to find the right balance between these ***,we aim to develop novel hybrid biocomposites based on poly(p-dioxanone)(PDO),poly(lactide-co-caprolactone)(LCL)and silk to produce high-performance grafts suitable for TL tissue *** containing 1-15%of silk were studied through a range of characterisation *** then explored biocompatibility through in vitro and in vivo studies using a mouse *** found that adding up to 5%silk increases the tensile properties,degradation rate and miscibility between PDO and LCL phases without agglomeration of silk inside the ***,addition of silk increases surface roughness and *** vitro experiments show that the silk improved attachment of tendon-derived stem cells and proliferation over 72 h,while in vivo studies indicate that the silk can reduce the expression of pro-inflammatory cytokines after six weeks of ***,we selected a promising biocomposite and created a prototype TL graft based on extruded *** found that the tensile properties of both individual fibres and braided grafts could be suitable for anterior cruciate ligament(ACL)repair applications.

关键词： Biocomposite Tendon graft Silk fibre extrusion Biodegradable scaffolds Anterior cruciate ligament

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