Interleukin-10 gene polymorphisms in recurrent aphthous stomatitis.

Area of Science:

• Immunogenetics
• Oral Medicine
• Molecular Biology

Background:

• Recurrent aphthous stomatitis (RAS) is a prevalent oral inflammatory condition with an unclear cause, potentially involving immune system dysregulation.
• Interleukin-10 (IL-10) is a crucial cytokine that inhibits synthesis and plays a role in maintaining oral tolerance.
• Single nucleotide polymorphisms (SNPs) in the IL10 gene may impact IL-10 production, potentially influencing RAS development.

Purpose of the Study:

• To investigate the association between IL10 gene polymorphisms and recurrent aphthous stomatitis (RAS).
• To determine the frequencies of IL10 alleles and genotypes in Iranian patients with RAS compared to a control group.

Main Methods:

• Genomic DNA from 60 Iranian RAS patients and controls was analyzed.
• Polymerase Chain Reaction Sequence Specific Primers (PCR-SSP) was used to genotype IL10 gene SNPs at positions -1082, -819, and -592.
• Allele and genotype frequencies were statistically compared between the patient and control groups.

Main Results:

• Significantly higher frequencies of the T allele at -819 (p=0.006) and the A allele at -592 (p<0.001) were observed in RAS patients.
• RAS patients showed significantly higher frequencies of the IL10 GA genotype at -1082 (p=0.007), CA genotype at -592 (p=0.001), and CT genotype at -819 (p=0.001).

Conclusions:

• Specific single nucleotide polymorphisms (SNPs) in the IL10 gene are associated with an increased predisposition to recurrent aphthous stomatitis (RAS).
• These findings suggest a potential genetic link between IL10 gene variations and RAS susceptibility.
• Further multicenter studies are warranted to validate these results and confirm the association.