| Texto completo | |
| Autor(es): |
Ribeiro Vitor, Luciana Lourenco
[1]
;
Oliveira Prado, Mariel Tavares
[1]
;
Lourenco Neto, Natalino
[1]
;
de Oliveira, Rodrigo Cardoso
[2]
;
Santos, Carlos Ferreira
[2]
;
Andrade Moreira Machado, Maria Aparecida
[1]
;
Oliveira, Thais Marchini
[1, 3]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Bauru Sch Dent, Dept Pediat Dent Orthodont & Publ Hlth, Alameda Dr Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil
[2] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, Alameda Dr Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil
[3] Univ Sao Paulo, Bauru Sch Dent, Alameda Dr Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Laser Physics; v. 28, n. 6 JUN 2018. |
| Citações Web of Science: | 0 |
| Resumo | |
This study aimed to evaluate type 1 collagen (COL1) gene expression by human pulp fibroblasts from primary teeth (HPF) after the variation of photobiomodulation (PBM) parameters. HPF were obtained from a biorepository, used at 4th passage, and irradiated (InGaAlP-660 nm) varying the power and application time according to the following groups: G1: 1.2 J cm(-2)-05 mW-10 s; G2: 2.5 J cm(-2)-05 mW-20 s; G3: 3.7 J cm(-2)-05 mW-30 s; G4: 5.0 J cm(-2)-05 mW-40 s; G5: 6.2 J cm(-2)-05 mW-50 s; G6: 2.5 J cm(-2)-10 mW-10 s; G7: 3.7 J cm(-2)-15 mW-10 s; G8: 5.0 J cm(-2)-20 mW-10 s; G9: 6.2 J cm(-2)-25 mW-10 s. The control group (G10) was not irradiated and maintained with DMEM + 10% SFB. RT-PCR was used to evaluate COL1 gene expression at 6, 12, and 24 h after irradiation. Intra-and intergroup comparisons were performed by two-way ANOVA followed by Tukey test (p < 0.05). The intragroup comparison showed statistically significant differences among periods (p < 0.05). In G1, G9, and G10 higher COL1 gene expression occurred at 12 h (p = 0.07), while in G2 to G8, the peak of higher expression occurred at 6 h (p = 0.02). The intergroup comparison did not show statistically significant differences (p > 0.05). The energy densities from 2.5 to 5 J cm(-2), regardless of the variation in PBM parameters, biomodulated the COL1 gene expression. At the energy density of 6.2 J cm(-2), longer application time and smaller power changed the pattern of COL1 gene expression by pulp fibroblasts from human primary teeth. (AU) | |
| Processo FAPESP: | 13/18886-5 - Influência de diferentes densidades de energia do laser de baixa intensidade em células derivadas da polpa de dentes decíduos |
| Beneficiário: | Thais Marchini de Oliveira Valarelli |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |