The online version of this article (doi:10.1186/s12903-015-0018-6) contains supplementary material, which is available to authorized users.
The authors declare that they have no competing interests.
Study Design: ARV, PLC, PCT. Obtained Funds: ARV, JMG, PCT. Recruited Subjects/Collected Biological Specimens: PLC, DPA, LCC, MAF, TCSV, CCKA-P, FA-P, PCT. Processed Samples/Generated Data: KD, PLC. Analyzed Data: ARV, PLC. Interpreted Results: ARV, PLC. Wrote First Draft: PLC. Wrote Final Draft: ARV. Critically revised Manuscript: All authors. All authors read and approved the final manuscript.
Peri-implantitis is a chronic inflammation, resulting in loss of supporting bone around implants. Chronic periodontitis is a risk indicator for implant failure. Both diseases have a common etiology regarding inflammatory destructive response. BRINP3 gene is associated with aggressive periodontitis. However, is still unclear if chronic periodontitis and peri-implantitis have the same genetic background.
The aim of this work was to investigate the association between BRINP3 genetic variation (rs1342913 and rs1935881) and expression and susceptibility to both diseases.
Periodontal and peri-implant examinations were performed in 215 subjects, divided into: healthy (without chronic periodontitis and peri-implantitis, n = 93); diseased (with chronic periodontitis and peri-implantitis, n = 52); chronic periodontitis only (n = 36), and peri-implantitis only (n = 34). A replication sample of 92 subjects who lost implants and 185 subjects successfully treated with implants were tested. DNA was extracted from buccal cells. Two genetic markers of BRINP3 (rs1342913 and rs1935881) were genotyped using TaqMan chemistry. Chi-square (p < 0.05) compared genotype and allele frequency between groups. A subset of subjects (n = 31) had gingival biopsies harvested. The BRINP3 mRNA levels were studied by CT method (2ΔΔCT). Mann–Whitney test correlated the levels of BRINP3 in each group (p < 0.05).
Statistically significant association between BRINP3 rs1342913 and peri-implantitis was found in both studied groups (p = 0.04). The levels of BRINP3 mRNA were significantly higher in diseased subjects compared to healthy individuals (p = 0.01).
This study provides evidence that the BRINP3 polymorphic variant rs1342913 and low level of BRINP3 expression are associated with peri-implantitis, independently from the presence of chronic periodontitis.
Additional file 1: Clinical findings and anamnesis data of the discovery sample.12903_2015_18_MOESM1_ESM.pdf
Additional file 2: Clinical findings and anamnesis data of the replication sample.12903_2015_18_MOESM2_ESM.pdf
Additional file 3: Multinominal logistic regression results for the diseased groups of the discovery samples (reference = healthy individuals).12903_2015_18_MOESM3_ESM.pdf
Additional file 4: Summary of the results of the association between peri-implantitis and BRINP3 in the replication sample.12903_2015_18_MOESM4_ESM.pdf
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- Different contribution of BRINP3 gene in chronic periodontitis and peri-implantitis: a cross-sectional study
Priscila L Casado
Diego P Aguiar
Lucas C Costa
Marcos A Fonseca
Thays CS Vieira
Claudia CK Alvim-Pereira
José M Granjeiro
Paula C Trevilatto
Alexandre R Vieira
- BioMed Central
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