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Evaluation of RANK/RANKL/OPG gene polymorphisms in aggressive periodontitis.
N Soedarsono1, D Rabello, H Kamei
1Computational and Experimental Systems Biology Group, RIKEN, Genomic Sciences Center, RIKEN, Yokohama, Japan.
Journal of Periodontal Research
|September 7, 2006
Summary
Genetic variations in RANK, RANKL, and OPG genes were investigated for aggressive periodontitis (AgP) in the Japanese population. No significant association was found between these gene polymorphisms and AgP, suggesting other factors may be involved.
Area of Science:
- Genetics
- Periodontology
- Immunology
Background:
- Aggressive periodontitis (AgP) is a severe form of gum disease.
- Previous research focused on immune response genes for AgP.
- This study investigated genes involved in bone destruction: RANK, RANKL, and OPG.
Purpose of the Study:
- To evaluate the association of single nucleotide polymorphisms (SNPs) in RANK, RANKL, and OPG genes with AgP.
- To explore these gene loci as potential candidates for AgP in the Japanese population.
Main Methods:
- Examined 99 AgP patients and 89 controls from Japan.
- Amplified and sequenced all exons and relevant boundaries of RANK, RANKL, and OPG genes.
- Identified polymorphisms by comparing sequences and analyzed linkage disequilibrium.
Main Results:
- Discovered 27 SNPs in RANK (10 novel) and 7 SNPs each in RANKL and OPG.
- Observed tight linkage disequilibrium between some SNP pairs across the three loci.
Conclusions:
- SNPs in the RANK/RANKL/OPG genes showed no significant association with AgP in the Japanese population studied.
- Further research is needed to identify genetic factors contributing to AgP.
