Functionalized epigallocatechin gallate copolymer inhibit dentin matrices degradation: Mechanical, solubilized telopeptide and proteomic assays

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Autor(es): dc.contributorUniversity of Toronto-
Autor(es): dc.contributorShanghai Jiaotong University-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorTaibah University-
Autor(es): dc.creatorPrakki, Anuradha-
Autor(es): dc.creatorXiong, Yaoyang-
Autor(es): dc.creatorBortolatto, Janaína-
Autor(es): dc.creatorGonçalves, Lucélia Lemes-
Autor(es): dc.creatorBafail, Arwa-
Autor(es): dc.creatorAnderson, Greg-
Autor(es): dc.creatorStavroullakis, Alexander Terry-
Data de aceite: dc.date.accessioned2025-08-21T19:34:00Z-
Data de disponibilização: dc.date.available2025-08-21T19:34:00Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2018-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.dental.2018.08.297-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/228590-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/228590-
Descrição: dc.descriptionObjectives: We investigated the biostability of dentin organic matrices treated with epigallocatechin gallate (EGCG) in comparison to chlorhexidine (CHX), both extracted from functionalized copolymers. Methods: Copolymers were prepared with bis-GMA:TEGDMA and incorporated with 1% of EGCG or CHX (w/w). Blank copolymers were used as control. Copolymer samples were individually stored in 1 mL deionized water to produce copolymer extracts. Dentin matrices were obtained by demineralization of dentin disks in 10% phosphoric acid solution. Matrices were individually treated with 1 mL of the copolymer extracts or distilled water for 48 h. Collected extracts were analyzed by high-performance liquid chromatography (HPLC) for the presence and quantification of EGCG, CHX, and copolymer by-products. Treated dentin matrices were tested for ultimate tensile strength, gravimetric changes, and swelling ratio. The treatment media were tested for total protein concentration, and dentin protease activity through solubilized telopeptide (ICTP- and CTX-ELISA) assays. The treatment media were also submitted to proteomic analysis. Results: HPLC identified released unreacted copolymer species and showed higher release of CHX compared to EGCG from respective copolymer extracts. EGCG extract inhibited activity of dentin proteolytic enzymes and promoted collagen biomodification observed by the telopeptide assays and in the changes to dentin matrix properties. The proteomic results showed less collagenous peptide hits in the EGCG extract media compared to CHX, and suggest compound-specific dentin protein binding interactions. Significance: This study demonstrates specific antiproteolytic effect and protein interactions of EGCG copolymer extract directly on dentin. This represents an advancement in dental materials which can impact the clinical procedures.-
Descrição: dc.descriptionNatural Sciences and Engineering Research Council of Canada-
Descrição: dc.descriptionDepartment of Clinical Sciences — Restorative Faculty of Dentistry University of Toronto-
Descrição: dc.descriptionDepartment of Prosthodontics School of Medicine Shanghai Jiaotong University-
Descrição: dc.descriptionDepartment of Restorative Dentistry Institute of Science and Technology of São José dos Campos Sao Paulo State University-
Descrição: dc.descriptionDepartment of Restorative Dental Sciences College of Dentistry Taibah University-
Descrição: dc.descriptionDepartment of Restorative Dentistry Institute of Science and Technology of São José dos Campos Sao Paulo State University-
Formato: dc.format1625-1633-
Idioma: dc.languageen-
Relação: dc.relationDental Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBis-GMA-
Palavras-chave: dc.subjectDentin-
Palavras-chave: dc.subjectEGCG-
Palavras-chave: dc.subjectHPLC-
Palavras-chave: dc.subjectProteomics-
Palavras-chave: dc.subjectTEGDMA-
Título: dc.titleFunctionalized epigallocatechin gallate copolymer inhibit dentin matrices degradation: Mechanical, solubilized telopeptide and proteomic assays-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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