Análise microbiológica e imunologica do fluido gengival e proteoma salivar de individuos com Sindrome de Down com doença periodontal
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Data
2014-03-28
Autores
Tanaka, Marcia Hiromi [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O objetivo deste estudo foi avaliar a quantidade de periodontopatógenos e de citocinas inflamatórias no fluido gengival, bem como as proteínas salivares em indivíduos com Síndrome de Down (SD) com Doença Periodontal (DP), comparando-os com indivíduos cromossomicamente normais, antes e 45 dias após o tratamento periodontal não-cirúrgico. Para detectar e quantificar as bactérias (Porphyromonas gingivalis, Tannerella forsythia e Treponema denticola), o fluido gengival foi coletado de 35 indivíduos com DP, sendo 23 indivíduos com SD e 12 não-sindrômicos (controle). Para quantificar as citocinas inflamatórias e as proteínas salivares foram coletados fluido gengival e saliva de 30 indivíduos com DP, sendo 20 indivíduos com SD e 10 não-sindrômicos (controle). Os efeitos do tratamento nos parâmetros clínicos foram positivos para o índice de placa, sangramento à sondagem, profundidade de sondagem e nível de inserção, em ambos os grupos. Porém, a contagem dos periodontopatógenos foi maior nos indivíduos com SD comparados com o grupo controle, antes e 45 dias após o tratamento periodontal. As citocinas Th1, Th2 e Th17 também foram encontradas em maiores quantidades nos indivíduos com SD do que nos controle, mesmo depois do tratamento periodontal. Adicionalmente, maiores quantidades de proteínas salivares com propriedades antimicrobianas, lubrificação, metabolismo, organização celular, resposta imune e transporte foram encontradas em indivíduos com SD depois do tratamento periodontal. Conclui-se que os resultados desta pesquisa podem contribuir para uma compreensão mais aprofundada do comportamento microbiológico, imunológico e do proteoma salivar de indivíduos com SD, e, consequentemente, explicar a alta prevalência e severidade da doença periodontal nesses indivíduos.
The aim of this study was to quantify the periodontopathogens, inflammatory cytokines and salivary proteins in subjects with Down syndrome (DS) and normal subjects, both with periodontal disease (PD), before and 45 days after non-surgical periodontal therapy. To detect and quantify bacteria (Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola), crevicular gingival fluid (CGF) was collected from 35 individuals with PD, 23 with DS and 12 non-syndromic (control). To quantify the inflammatory cytokines and salivary proteins, CGF and saliva of 30 individuals with PD, 20 with SD and 10 non-syndromic (control) were collected. The effects of the non-surgical periodontal therapy on clinical parameters were positive in both groups. However, the count of periodontopathogens was higher in individuals with DS compared with the control group, before and after periodontal therapy.Th1, Th2 and Th17 cytokines were also found in higher amounts in individuals with DS even after periodontal therapy compared with control patients. Furthermore, higher amounts of salivary proteins with antimicrobial properties, lubrication, metabolism, cellular organization, immune response and transport were quantified in individuals with DS after periodontal therapy. Despite of clinical parameters improvement after non-surgical periodontal therapy in subjects with DS, it is concluded that the results of this study may contribute to a more profound understanding of microbiological and immunological behavior, as well as knowledge of the salivary proteome in individuals with Down syndrome, and also might explain the high prevalence and severity of periodontal disease in these individuals.
The aim of this study was to quantify the periodontopathogens, inflammatory cytokines and salivary proteins in subjects with Down syndrome (DS) and normal subjects, both with periodontal disease (PD), before and 45 days after non-surgical periodontal therapy. To detect and quantify bacteria (Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola), crevicular gingival fluid (CGF) was collected from 35 individuals with PD, 23 with DS and 12 non-syndromic (control). To quantify the inflammatory cytokines and salivary proteins, CGF and saliva of 30 individuals with PD, 20 with SD and 10 non-syndromic (control) were collected. The effects of the non-surgical periodontal therapy on clinical parameters were positive in both groups. However, the count of periodontopathogens was higher in individuals with DS compared with the control group, before and after periodontal therapy.Th1, Th2 and Th17 cytokines were also found in higher amounts in individuals with DS even after periodontal therapy compared with control patients. Furthermore, higher amounts of salivary proteins with antimicrobial properties, lubrication, metabolism, cellular organization, immune response and transport were quantified in individuals with DS after periodontal therapy. Despite of clinical parameters improvement after non-surgical periodontal therapy in subjects with DS, it is concluded that the results of this study may contribute to a more profound understanding of microbiological and immunological behavior, as well as knowledge of the salivary proteome in individuals with Down syndrome, and also might explain the high prevalence and severity of periodontal disease in these individuals.
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Palavras-chave
Down, Sindrome de, Periodontite, Microbiologia, Periodontitis
Como citar
TANAKA, Marcia Hiromi. Análise microbiológica e imunologica do fluido gengival e proteoma salivar de individuos com Sindrome de Down com doença periodontal. 2014. 105 f. Tese (doutorado) - Universidade Estadual Paulista Julio de Mesquita Filho, Faculdade de Odontologia de Araraquara, 2014.