Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Κυριακή 2 Οκτωβρίου 2022

Genetic Polymorphism in the Tumor Necrosis Factor Alpha gene (G‐308A) is associated with Persistent Apical Periodontitis in Brazilians

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Abstract

Aim

To investigate if there was an association between genetic polymorphisms in TNF-⍺ and its receptors TNFRSF1A and TNFRSF1B with persistent apical periodontitis (PAP) in Brazilian subjects.

Methodology

Patients who had pulpal necrosis and apical periodontitis installed at the time of treatment, with at least one-year of follow-up after non-surgical root canal treatment were recalled. 378 subjects were included, 150 subjects with signs/symptoms of PAP and 228 subjects with root canal–treated teeth exhibiting healthy perirradicular tissues (healed). Genomic DNA was extracted from saliva and used for TNF-⍺ (rs1800629), TNFRSF1A (rs1800693) and TNFRSF1B (rs1061622) genotyping by real-time PCR. Genotypes and alleles frequencies were evaluated by c2 or Fisher's exact tests and odds ratio were implemented (𝛂= 5%).

Results

The genetic polymorphism in TNF-α (rs1800629) was associated as a protective factor for the development of PAP (p<0.05), once subjects who presented at least one allele A (AA+AG X GG), had a higher chance to lesion repair (p<0.05). The polymorphisms rs1800693 and rs1061622 in TNF receptors (TNFRSF1A and TNFRSF1B respectively) were not associated with the development of PAP (p>0.05).

Conclusions

The observed results demonstrate that polymorphism in TNF-α but not in its receptors is associated with PAP.

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