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Lactotransferrin Gene Polymorphism Associated with Caries Experience.

Andrea D Doetzer1, João A Brancher, Giovana D Pecharki

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Caries Research
|May 23, 2015
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Summary
This summary is machine-generated.

Genetic variations in lactotransferrin (LTF) may influence dental caries susceptibility. A specific LTF gene variant (rs6441989, Allele A) showed a protective effect against cavities in children, suggesting a role for host genetics in caries development.

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Area of Science:

  • Genetics
  • Oral Health
  • Immunology

Background:

  • Dental caries is a multifactorial disease influenced by diet, biofilm, and host response.
  • Lactotransferrin (LTF), a salivary glycoprotein, plays a role in immune and antibacterial defenses.
  • The genetic basis of caries susceptibility is not fully understood.

Purpose of the Study:

  • To investigate the association between lactotransferrin (LTF) gene polymorphisms and dental caries susceptibility.
  • To explore the genetic component of host response in the context of caries development.

Main Methods:

  • Genotyping of three LTF tag SNPs (rs6441989, rs2073495, rs11716497) in 677 12-year-old students.
  • Comparison of allele frequencies between caries-free (DMFT=0) and caries-affected (DMFT≥1) groups, including a high-disease group (DMFT≥2).
  • Statistical analysis using univariate and multivariate models, considering clinical parameters like gingivitis and plaque.

Main Results:

  • Allele A of LTF tag SNP rs6441989 was significantly less frequent in the high-caries group, indicating a protective effect against dental caries (OR: 0.710, p=0.045).
  • This protective association remained significant even when considering the presence of gingivitis (p=0.020) and plaque (p=0.035).
  • No significant associations were found for the other two LTF SNPs tested.

Conclusions:

  • Specific polymorphisms in the lactotransferrin (LTF) gene are associated with caries susceptibility in children.
  • The rs6441989 polymorphism, specifically Allele A, may confer a protective effect against dental caries.
  • These findings contribute to understanding the genetic control of caries susceptibility and could inform future personalized prevention strategies.