Association Between Genetic Variants in DEFB1 Gene and Dental Caries Susceptibility

Area of Science:

• Genetics
• Oral Health
• Molecular Biology

Background:

• Dental caries is a prevalent oral disease affecting a significant portion of the global population.
• Individual susceptibility to dental caries is influenced by genetic factors.
• The beta-defensin 1 (DEFB1) gene is implicated in oral immunity and may play a role in disease susceptibility.

Purpose of the Study:

• To investigate the association between specific DEFB1 gene variants (rs11362 and rs1799946) and dental caries.
• To determine if DEFB1 polymorphisms contribute to variations in dental caries risk.
• To analyze genetic associations in a case-control study.

Main Methods:

• A case-control study was conducted with 202 participants (119 cases with high caries, 83 controls with low caries).
• Genomic DNA was extracted from peripheral blood samples.
• Tetra-primer ARMS-PCR was used to genotype DEFB1 promoter polymorphisms rs11362 and rs1799946.

Main Results:

• No significant differences were observed in allelic, genotypic, or haplotype frequencies between the dental caries case and control groups.
• The studied DEFB1 variants did not show a statistically significant association with dental caries susceptibility in this cohort.
• Genotyping results indicated no link between the examined DEFB1 polymorphisms and caries prevalence.

Conclusions:

• The specific DEFB1 gene variants rs11362 and rs1799946 are not associated with dental caries in the studied Iranian population.
• Larger sample sizes and further functional studies are required to fully understand the role of DEFB1 in dental caries.
• Elucidating the impact of DEFB1 variations on gene expression is crucial for future research.