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Rocha, Catarina Medeiros
;
Kawamoto, Dione
;
Martins, Fernando Henrique
;
Bueno, Manuela Rocha
;
Ishikawa, Karin H.
;
Ando-Suguimoto, Ellen Sayuri
;
Carlucci, Aline Ramos
;
Arroteia, Leticia Sandoli
;
Casarin, Renato V.
;
Saraiva, Luciana
;
Simionato, Maria Regina Lorenzetti
;
Mayer, Marcia Pinto Alves
Número total de Autores: 12
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 25, n. 15, p. 19-pg., 2024-08-01. |
| Resumo | |
Oral bacteria are implicated not only in oral diseases but also in gut dysbiosis and inflammatory conditions throughout the body. The periodontal pathogen Aggregatibacter actinomycetemcomitans (Aa) often occurs in complex oral biofilms with Streptococcus gordonii (Sg), and this interaction might influence the pathogenic potential of this pathogen. This study aims to assess the impact of oral inoculation with Aa, Sg, and their association (Aa+Sg) on alveolar bone loss, oral microbiome, and their potential effects on intestinal health in a murine model. Sg and/or Aa were orally administered to C57Bl/6 mice, three times per week, for 4 weeks. Aa was also injected into the gingiva three times during the initial experimental week. After 30 days, alveolar bone loss, expression of genes related to inflammation and mucosal permeability in the intestine, serum LPS levels, and the composition of oral and intestinal microbiomes were determined. Alveolar bone resorption was detected in Aa, Sg, and Aa+Sg groups, although Aa bone levels did not differ from that of the SHAM-inoculated group. Il-1 beta expression was upregulated in the Aa group relative to the other infected groups, while Il-6 expression was downregulated in infected groups. Aa or Sg downregulated the expression of tight junction genes Cldn 1, Cldn 2, Ocdn, and Zo-1 whereas infection with Aa+Sg led to their upregulation, except for Cldn 1. Aa was detected in the oral biofilm of the Aa+Sg group but not in the gut. Infections altered oral and gut microbiomes. The oral biofilm of the Aa group showed increased abundance of Gammaproteobacteria, Enterobacterales, and Alloprevotella, while Sg administration enhanced the abundance of Alloprevotella and Rothia. The gut microbiome of infected groups showed reduced abundance of Erysipelotrichaceae. Infection with Aa or Sg disrupts both oral and gut microbiomes, impacting oral and gut homeostasis. While the combination of Aa with Sg promotes Aa survival in the oral cavity, it mitigates the adverse effects of Aa in the gut, suggesting a beneficial role of Sg associations in gut health. (AU) | |
| Processo FAPESP: | 15/18273-9 - Novas estratégias para o controle das periodontites |
| Beneficiário: | Marcia Pinto Alves Mayer |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 16/13159-6 - Análise da diversidade da microbiota supra e subgengival e perfil de proteínas da saliva e da película do esmalte de indivíduos com periodontite crônica e sucessão microbiana |
| Beneficiário: | Dione Kawamoto |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 16/13156-7 - Efeitos direto e imunomodulatório das bactérias probióticas sobre os patógenos periodontais |
| Beneficiário: | Karin Hitomi Ishikawa |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 21/13846-1 - Efeito de probiótico Lactobacillus acidophilus LA5 sobre a expressão de proteínas relacionadas à integridade da barreira intestinal em modelo de periodontite induzida por Aggregatibacter actinomycetemcomitans |
| Beneficiário: | Aline Ramos Carlucci |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 17/16377-7 - Avaliação do efeito de bactérias probióticas sobre a resposta imune contra a.actinomycetemcomitans: estudo em células epiteliais gengivais e em modelo experimental de infecção in vivo. |
| Beneficiário: | Manuela Rocha Bueno |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |