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Investigation of Aggregatibacter actinomycetemcomitans in individuals genetically susceptible and non-susceptible to chronic periodontitis

Grant number: 13/06365-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2013
Effective date (End): July 31, 2015
Field of knowledge:Health Sciences - Dentistry - Periodontology
Principal Investigator:Raquel Mantuaneli Scarel Caminaga
Grantee:Thamiris Cirelli
Host Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil


The periodontal disease is a infectious disease of a multifactorial character caused by periodontopathic micro-organisms and that suffer influence by factors like: genetic susceptibility of the host, reaction of the immune system, smoking habits and systemic diseases. Recent studies had investigate polymorphism in IL8 and IL4 genes in patients with and without genetical predisposition to periodontitis even after adjust for age, gender, skin color and smoking habits. The objective of this study is evaluate a possible association between genetical susceptibility to chronic periodontitis caused by haplotypes in the genes IL8 and IL4 and the levels of the periodontopathic Aggregatibacter actinomycetemcomitans in patients with and without periodontal disease. The levels of Aggregatibacter actinomycetemcomitans will be analyzed by absolute quantification by the use of PCR in real time. The clinical and microbiological data will pass through parametric and non-parametric statistics (at the 5 % level of significance). With this study is expected to contribute with a better understanding of the possible interrelationship of different factors like the genetic, immunological and microbiological in the periodontal disease, as it has a multifactorial character.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CIRELLI, THAMIRIS; FINOTI, LIVIA S.; CORBI, SAMIA C. T.; ANOVAZZI, GIOVANA; NEPOMUCENO, RAFAEL; ORRICO, SILVANA R. P.; CIRELLI, JONI A.; MAYER, MARCIA P. A.; SCAREL-CAMINAGA, RAQUEL M.. Absolute quantification of Aggregatibacter actinomycetemcomitans in patients carrying haplotypes associated with susceptibility to chronic periodontitis: multifaceted evaluation with periodontitis covariants. PATHOGENS AND DISEASE, v. 75, n. 7, . (09/11371-4, 13/06365-0, 09/11321-7, 09/08773-3)

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