Objective: Angiotensin-converting enzyme (ACE) is the core enzyme in the renin-angiotensin system (RAS), which catalyzes the production of angiotensin II (Ang II). The aim of this study was to determine whether ACE gene is associated with the development of the periodontal disease.
Design: To investigate whether ACE is involved in the development of the periodontal disease, 199 periodontal disease patients and 165 control subjects were studied. The ACE insertion/deletion polymorphism was analyzed using polymerase chain reaction (PCR). SNPStats and SPSS 18.0 were used for the analysis of genetic data. Logistic regression models were performed to determine odds ratio (OR), 95% confidence interval (CI), and P value.
Results: Genotypic frequencies of I/I, I/D, and D/D were 25.4%, 42.3%, and 32.3% vs. 35.3%, 41.7%, and 23.1% (periodontal disease group vs. control group), respectively. In the genotype analysis of the ACE insertion/deletion polymorphism, codominant and log-additive models both showed significant association with periodontal disease [OR = 1.94, 95% CI = 1.05-3.61, P=0.036 in the codominant model (I/I vs. D/D); OR = 1.39, 95% CI = 1.02-1.90, P = 0.034 in the log-additive model (I/I vs. I/D vs. D/D)].
Conclusions: These results suggest that the ACE insertion/deletion polymorphism may be associated with the susceptibility to the periodontal disease in the Korean population.
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