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Evaluation of in vitro human gingival fibroblast seeding on acellular dermal matrix
Rodrigues, Annelissa Zorzeto; Oliveira, Paulo Tambasco de; Novaes Júnior, Arthur Belém; Maia, Luciana Prado; Souza, Sérgio Luís Scombatti de; Palioto, Daniela Bazan.
  • Rodrigues, Annelissa Zorzeto; University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology. Ribeirão Preto. BR
  • Oliveira, Paulo Tambasco de; University of São Paulo. Ribeirão Preto Dental School. Cell Culture Laboratory. Ribeirão Preto. BR
  • Novaes Júnior, Arthur Belém; University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology. Ribeirão Preto. BR
  • Maia, Luciana Prado; University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology. Ribeirão Preto. BR
  • Souza, Sérgio Luís Scombatti de; University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology. Ribeirão Preto. BR
  • Palioto, Daniela Bazan; University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology. Ribeirão Preto. BR
Braz. dent. j ; 21(3): 179-189, 2010. ilus, graf, tab
Article in English | LILACS | ID: lil-556814
ABSTRACT
The acellular dermal matrix (ADM) was introduced in periodontology as a substitute for the autogenous grafts, which became restricted because of the limited source of donor's tissue. The aim of this study was to investigate, in vitro, the distribution, proliferation and viability of human gingival fibroblasts seeded onto ADM. ADM was seeded with human gingival fibroblasts for up to 21 days. The following parameters were evaluated cell distribution, proliferation and viability. Results revealed that, at day 7, fibroblasts were adherent and spread on ADM surface, and were unevenly distributed, forming a discontinuous single cell layer; at day 14, a confluent fibroblastic monolayer lining ADM surface was noticed. At day 21, the cell monolayer exhibited a reduction in cell density. At 7 days, about to 90 percent of adherent cells on ADM surface were cycling while at 14 and 21 days this proportion was significantly reduced. A high proportion of viable cell was detected on AMD surface both on 14 and 21 days. The results suggest that fibroblast seeding onto ADM for 14 days can allow good conditions for cell adhesion and spreading on the matrix; however, migration inside the matrix was limited.
RESUMO
A matriz dérmica acelular (MDA) foi introduzida na Periodontia como um substituto para enxertos autógenos, os quais se tornaram restritos devido à quantidade limitada de tecido doador. O objetivo deste estudo foi verificar, in vitro, a distribuição, proliferação e viabilidade de fibroblastos gengivais humanos cultivados em MDA. Fibroblastos gengivais foram cultivados sobre MDA por até 21 dias. Os seguintes parâmetros foram avaliados distribuição, proliferação e viabilidade celular. Os resultados revelaram que, aos 7 dias, os fibroblastos estavam aderidos e espraiados na superfície da MDA, e estavam distribuídos de forma desigual, formando uma camada celular descontínua; aos 14 dias, uma monocamada confluente de fibroblastos revestindo a superfície da MDA foi observada. Aos 21 dias, a monocamada celular exibiu uma redução na densidade celular. Aos 7 dias, cerca de 90 por cento das células aderidas na superfície da MDA estavam no ciclo celular, enquanto que aos 14 e 21 dias esse número reduziu significativamente. Uma maior proporção de células viáveis foi detectada na superfície da MDA tanto aos 14 quanto aos 21 dias. Os resultados sugerem que fibroblastos cultivados sobre a MDA por 14 dias permitem boas condições de adesão e espraiamento das células sobre a matriz, porém, a migração de células para o interior da matriz foi limitada.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Biocompatible Materials / Collagen / Tissue Scaffolds / Fibroblasts / Gingiva Type of study: Evaluation studies Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Biocompatible Materials / Collagen / Tissue Scaffolds / Fibroblasts / Gingiva Type of study: Evaluation studies Limits: Humans Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR