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Vitamin D inhibits the growth of and virulence factor gene expression by Porphyromonas gingivalis and blocks activation of the nuclear factor kappa B transcription factor in monocytes.
Grenier, D; Morin, M-P; Fournier-Larente, J; Chen, H.
Afiliação
  • Grenier D; Oral Ecology Research Group, Faculty of Dentistry, Université Laval, Quebec City, QC, Canada.
  • Morin MP; Oral Ecology Research Group, Faculty of Dentistry, Université Laval, Quebec City, QC, Canada.
  • Fournier-Larente J; Oral Ecology Research Group, Faculty of Dentistry, Université Laval, Quebec City, QC, Canada.
  • Chen H; Department of Stomatology, Hubei University of Science and Technology, Xianning, Hubei, China.
J Periodontal Res ; 51(3): 359-65, 2016 Jun.
Article em En | MEDLINE | ID: mdl-26297053
BACKGROUND AND OBJECTIVE: Increasing evidence suggests that 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ), a fat-soluble secosteroid hormone, has a positive impact on periodontal health through diverse mechanisms. The present study was aimed at investigating the effect of 1,25(OH)2 D3 on the growth of and virulence factor gene expression by the periodontopathogenic bacterium Porphyromonas gingivalis. The effect of 1,25(OH)2 D3 on P. gingivalis-mediated activation of nuclear factor kappa B (NF-κB) transcription factor in monocytes was also assessed. MATERIAL AND METHODS: A broth microdilution assay was used to determine the antibacterial activity of 1,25(OH)2 D3 . The modulation of virulence factor gene expression in P. gingivalis was assessed by quantitative reverse transcription-polymerase chain reaction. NF-κB activation was assessed using a human monocytic cell line stably transfected with a luciferase reporter containing NF-κB binding sites. RESULTS: Minimal inhibitory concentrations of 1,25(OH)2 D3 against P. gingivalis ranged from 3.125 to 6.25 µg/mL. Moreover, a partial synergistic effect was observed when 1,25(OH)2 D3 was used in association with metronidazole. 1,25(OH)2 D3 attenuated the virulence of P. gingivalis by reducing the expression of genes coding for important virulence factors, including adhesins (fimA, hagA and hagB) and proteinases (rgpA, rgpB and kgp). 1,25(OH)2 D3 dose-dependently prevented P. gingivalis-induced NF-κB activation in a monocyte model. CONCLUSION: Our study suggested that 1,25(OH)2 D3 selectively inhibits the growth of and virulence factor gene expression by P. gingivalis, in addition to attenuating NF-κB activation by this periodontopathogen. This dual action on P. gingivalis and the inflammatory response of host cells may be of particular interest with a view to developing a novel and inexpensive preventive/therapeutic strategy.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Vitamina D / Monócitos / Expressão Gênica / NF-kappa B / Porphyromonas gingivalis / Fatores de Virulência Tipo de estudo: Prognostic_studies Limite: Humans Idioma: En Revista: J Periodontal Res Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Canadá País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fatores de Transcrição / Vitamina D / Monócitos / Expressão Gênica / NF-kappa B / Porphyromonas gingivalis / Fatores de Virulência Tipo de estudo: Prognostic_studies Limite: Humans Idioma: En Revista: J Periodontal Res Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Canadá País de publicação: Estados Unidos