Absolute quantification of Aggregatibacter actinomycetemcomitans in patients carrying haplotypes associated with susceptibility to chronic periodontitis: Multifaceted evaluation with periodontitis covariants

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dc.contributor.authorCirelli, Thamiris [UNESP]
dc.contributor.authorFinoti, Livia S. [UNESP]
dc.contributor.authorCorbi, Sâmia C.T. [UNESP]
dc.contributor.authorAnovazzi, Giovana [UNESP]
dc.contributor.authorNepomuceno, Rafael [UNESP]
dc.contributor.authorOrrico, Silvana R.P. [UNESP]
dc.contributor.authorCirelli, Joni A. [UNESP]
dc.contributor.authorMayer, Márcia P.A.
dc.contributor.authorScarel-Caminaga, Raquel M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2018-12-11T16:50:50Z
dc.date.available2018-12-11T16:50:50Z
dc.date.issued2017-10-01
dc.description.abstractThis study aimed to evaluate the association between haplotypes in the interleukin 8 (IL8) and IL4 genes previously associated to chronic periodontitis (CP) and the levels of Aggregatibacter actinomycetemcomitans (A.a.) in subgingival sites of patients with and without CP. Moreover, multifaceted evaluations were made to search associations among patients' genetic background with the A.a. levels and previous clinical/immunological/microbiological findings. Subgingival sites (n = 596) of 104 patients were divided into susceptible to CP by the IL8 haplotype ATC/TTC (IL8+); non-susceptible to CP by the IL8 AGT/TTC (IL8-); susceptible to CP by the IL4 TCI/CCI (IL4+); protection against CP by the IL4 TTD/CTI (IL4-). Subgingival biofilm samples from diseased and healthy sites of CP patients and from control sites of health patients were obtained for absolute quantification of A.a. by quantitative real-time polymerase chain reaction. For diseased sites, samples were collected before and 45 days after periodontal treatment. The IL4 but not the IL8 haplotypes were associated with levels of A.a. (in both periods). After periodontal treatment, higher levels of A.a. were found in subgingival sites of (IL4-) patients, and higher levels of IL-4 were associated with deeper probing pockets in these same patients. Significant correlations were found among genetic (patients carrying IL8 or IL4 haplotypes), microbiological and immunological data showing the interrelationship of different factors in the CP.en
dc.description.affiliationDepartment of Morphology São Paulo State University (UNESP) School of Dentistry
dc.description.affiliationDepartment of Oral Diagnosis and Surgery São Paulo State University (UNESP) School of Dentistry
dc.description.affiliationDepartment of Microbiology Institute of Biomedical Sciences University of São Paulo (USP)
dc.description.affiliationUnespDepartment of Morphology São Paulo State University (UNESP) School of Dentistry
dc.description.affiliationUnespDepartment of Oral Diagnosis and Surgery São Paulo State University (UNESP) School of Dentistry
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2009/08773-3
dc.identifierhttp://dx.doi.org/10.1093/femspd/ftx092
dc.identifier.citationPathogens and Disease, v. 75, n. 7, 2017.
dc.identifier.doi10.1093/femspd/ftx092
dc.identifier.file2-s2.0-85037043239.pdf
dc.identifier.issn2049-632X
dc.identifier.scopus2-s2.0-85037043239
dc.identifier.urihttp://hdl.handle.net/11449/170443
dc.language.isoeng
dc.relation.ispartofPathogens and Disease
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAggregatibacter actinomycetemcomitans
dc.subjectChronic periodontitis
dc.subjectGenetic polymorphism
dc.subjectInterleukin-4
dc.subjectInterleukin-8
dc.titleAbsolute quantification of Aggregatibacter actinomycetemcomitans in patients carrying haplotypes associated with susceptibility to chronic periodontitis: Multifaceted evaluation with periodontitis covariantsen
dc.typeArtigo

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