LTF and DEFB1 polymorphisms are associated with susceptibility toward chronic periodontitis development

Area of Science:

• Genetics
• Immunology
• Periodontology

Background:

• Chronic periodontitis involves bacterial infection and altered host immune responses, leading to alveolar bone destruction and tooth loss.
• The innate immune system, including beta-defensins and lactoferrin, may influence susceptibility to periodontitis.
• Genetic factors contribute to individual differences in disease risk.

Purpose of the Study:

• To investigate the association between specific genetic variations in the DEFB1 and LTF genes and the risk of developing chronic periodontitis.
• To explore the role of oral innate immune system genes in periodontitis susceptibility within an Italian isolated population.

Main Methods:

• Genotyping of seven single nucleotide polymorphisms (SNPs) in the DEFB1 and LTF genes.
• Analysis of SNPs in 155 healthy controls and 439 chronic periodontitis patients from North-East Italy.

Main Results:

• Significant associations were identified between periodontitis and two DEFB1 SNPs (g. -20G>A and g. -44C>G).
• Significant associations were also found between periodontitis and two LTF SNPs (p.Ala29Thr and p.Lys47Arg).

Conclusions:

• Genetic variations in DEFB1 and LTF genes appear to play a role in the susceptibility to chronic periodontitis.
• These findings highlight the importance of innate immune system genetics in periodontal disease development.