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dc.contributor.authorSanz Ruiz, Pabloes-ES
dc.contributor.authorCarbó Laso, Estheres-ES
dc.contributor.authordel Real Romero, Juan Carloses-ES
dc.contributor.authorArán Ais, Franciscaes-ES
dc.contributor.authorBallesteros Iglesias, María Yolandaes-ES
dc.contributor.authorPaz Jiménez, Evaes-ES
dc.contributor.authorSánchez Navarro, Mª Magdalenaes-ES
dc.contributor.authorPérez Limiñana, Mª Ángeleses-ES
dc.contributor.authorVaquero Martín, Javieres-ES
dc.date.accessioned2017-12-21T15:45:34Z
dc.date.available2017-12-21T15:45:34Z
dc.date.issued01/01/2018es_ES
dc.identifier.issn0736-0266es_ES
dc.identifier.urihttp://hdl.handle.net/11531/24695
dc.descriptionArtículos en revistases_ES
dc.description.abstractes-ES
dc.description.abstractTwo-stage exchange with antibiotic-loaded bone cement spacers remains the gold standard for chronic periprosthetic joint infection (PJI). Rifampicin is highly efficient on stationary-phase staphylococci in biofilm; however, its addition to PMMA to manufacture spacers prevents polymerization and reduces mechanical properties. Isolation of rifampicin during polymerization by microencapsulation could allow manufacturing rifampicin-loaded bone cement maintaining elution and mechanical properties. Microcapsules of rifampicin with alginate, polyhydroxybutyratehydroxyvalerate (PHBV), ethylcellulose and stearic acid (SA) were synthesized. Alginate and PHBV microcapsules were added to bone cement and elution, compression, bending, hardness, setting time and microbiological tests were performed. Repeated measures ANOVA and Bonferroni post-hoc test were performed, considering a p<0.05 as statistical significance. Bone cement specimens containing alginate microcapsules eluted more rifampicin than PHBV microcapsules or non?encapsulated rifampicin over time (p<0.012). Microencapsulation of rifampicin allowed PMMA to preserve mechanical properties in compression and bending tests. Cement with alginate microcapsules showed similar behavior in hardness tests to control cement over the study period (73±1.68HD). PMMA with alginate microcapsules exhibited the largest zones of inhibition in microbiological tests. Statistically significant differences in mean diameters of zones of inhibition between PMMA loaded with alginate-rifampicin (p=0.0001) and alginate-PHBV microcapsules (p=0.0001) were detected. Rifampicin microencapsulation with alginate is the best choice to introduce rifampicin in PMMA preserving mechanical properties, setting time, elution, and antimicrobial properties. The main applicability of this study is the opportunity for obtaining rifampicin-loaded PMMA by microencapsulation of rifampicin in alginate microparticles, achieving high doses of rifampicin in infected tissues, increasing the successful of PJI treatment.en-GB
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoen-GBes_ES
dc.rightses_ES
dc.rights.uries_ES
dc.sourceRevista: Journal of Orthopaedic Research, Periodo: 1, Volumen: 36, Número: 1, Página inicial: 459, Página final: 466es_ES
dc.subject.otherInstituto de Investigación Tecnológica (IIT)es_ES
dc.titleMicroencapsulation of rifampicin: a technique to preserve the mechanical properties of bone cementes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.description.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.rights.holderes_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.keywordses-ES
dc.keywordsRifampicin-loaded bone cement; rifampicin microencapsulation; bone cement spacers; periprosthetic infectionen-GB


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