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Exposure to lipopolysaccharide and calcium silicate-based materials affects the behavior of dental pulp cells
Pedrosa, Marlus da Silva; Vilela, Handially dos Santos; Rahhal, Juliana Garuba; Bueno, Natália Pieretti; Lima, Fabianne Soares; Nogueira, Fernando Neves; Sipert, Carla Renata.
  • Pedrosa, Marlus da Silva; University of São Paulo. School of Dentistry. Department of Biomaterials and Oral Biology. São Paulo. BR
  • Vilela, Handially dos Santos; University of São Paulo. School of Dentistry. Department of Biomaterials and Oral Biology. São Paulo. BR
  • Rahhal, Juliana Garuba; University of São Paulo. School of Dentistry. Department of Restorative Dentistry. São Paulo. BR
  • Bueno, Natália Pieretti; University of São Paulo. School of Dentistry. Department of Oral and Maxillofacial Surgery, Prosthesis and Traumatology. BR
  • Lima, Fabianne Soares; University of São Paulo. School of Dentistry. Department of Biomaterials and Oral Biology. São Paulo. BR
  • Nogueira, Fernando Neves; University of São Paulo. School of Dentistry. Department of Restorative Dentistry. São Paulo. BR
  • Sipert, Carla Renata; University of São Paulo. School of Dentistry. Department of Restorative Dentistry. São Paulo. BR
Braz. dent. j ; 33(5): 9-17, Sep.-Oct. 2022. graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1403791
ABSTRACT
Abstract This study assessed the cell viability, cytokine production, and mineralization potential of human dental pulp cells (hDPCs) after exposure to lipopolysaccharide (LPS) and application of calcium silicate-based materials (CSBM). Characterization of the CSBM was performed by infrared spectroscopy (n = 3). Extracts of Bio-C Repair, Biodentine, Cimmo HD, and MTA Repair HP were prepared and diluted (11, 14, and 116). Culture of hDPCs was established and treated or not with 1 µg/mL of LPS from Escherichia coli for 7 days. MTT assay was used to assess cell viability at 24, 48, and 72 h (n = 6). Alkaline phosphatase (ALP) activity was assayed on day 7 (n = 4). Il-10 and TNF-α were quantified by ELISA at 24 h (n = 6). Data were analyzed by ANOVA and Tukey's test (α = 0.05). Cell viability of LPS-activated hPDCs was higher than untreated control in 48 and 72 h (p < 0.05). Differences between non-treated and LPS-activated hPDCs were observed for Biodentine and Cimmo HP (p < 0.05). The CSBM influenced the cell viability (p < 0.05). ALP activity was higher in LPS-activated hDPCs (p < 0.05). No changes in the concentration of TNF-α were observed between groups (p > 0.05). The CSBM increased the Il-10 production (p < 0.05). LPS-activated hDPCs presented increased cell viability and ALP activity. The CSBM showed mild toxicity and was able to enhance the cell viability and mineralization potential of untreated and LPS-activated hDPCs. The CSBM also induced anti-inflammatory mechanisms without compromising pro-inflammatory ones.
RESUMO
Resumo Este estudo avaliou a viabilidade celular, produção de citocinas e potencial de mineralização de células da polpa dentária humana (hDPCs) após exposição a lipopolissacarídeo (LPS) e aplicação de materiais à base de silicato de cálcio (CSBM). A caracterização do CSBM foi realizada por espectroscopia (n = 3). Extratos de Bio-C Repair, Biodentine, Cimmo HD e MTA Repair HP foram preparados e diluídos (1 1, 1 4 e 116). A cultura de hDPCs foi estabelecida e tratada ou não com 1 µg / mL de LPS de Escherichia coli por 7 dias. O ensaio de MTT foi usado para avaliar a viabilidade celular em 24, 48 e 72 h (n = 6). A atividade da fosfatase alcalina (ALP) foi avaliada no dia 7 (n = 4). Il-10 e TNF-α foram quantificados por ELISA em 24 h (n = 6). Os dados foram analisados ​​por ANOVA e teste de Tukey (α = 0,05). A viabilidade celular das hPDCs ativados por LPS foi maior do que o controle não tratado em 48 e 72 h (p <0,05). Diferenças entre hPDCs não tratados e ativados por LPS foram observados para Biodentine e Cimmo HP (p < 0,05). Os CSBM influenciaram na viabilidade celular (p <0,05). A atividade de ALP foi maior em hDPCs ativadas por LPS (p <0,05). Não foram observadas alterações na concentração de TNF-α entre os grupos (p> 0,05). Os CSBM aumentaram a produção de Il-10 (p < 0,05). Os hDPCs ativados por LPS apresentaram um aumento na viabilidade celular e atividade ALP. Os CSBM apresentaram toxicidade moderada e foram capazes de aumentar a viabilidade celular e o potencial de mineralização de hDPCs não tratados e ativados por LPS. Os CSBM também induziram mecanismos anti-inflamatórios sem comprometer os pró-inflamatórios.


Full text: Available Index: LILACS (Americas) Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2022 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2022 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR