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[Association of Fc gamma receptors IIIA gene polymorphisms with the susceptibility to periodontitis in Chinese patients].

Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences (2009-02-18)
Na An, Xiang-ying Ou-Yang, Cai-fang Cao, Jue Ye, Ru-tai Hui

Fc gamma receptors IIIA (Fc gamma RIIIA) mediates phagocytosis by macrophages, and cytokine production by NK cells and lymphocytes. The Fc gamma R IIIA-158V/F polymorphism may play a role in the pathogenesis of periodontitis. This study was to detect Fc gamma R IIIA-158V/F genotypes in Chinese patients with different forms of periodontitis. Thirty aggressive periodontitis (AgP) patients (aged from 9 to 40, 13 males and 17 females), 131 chronic periodontitis (CP) patients (aged from 22 to 63, 76 males and 55 females), and 47 healthy subjects (H) (aged from 22 to 75, 21 males and 26 females) consented to participate in this study. Swabs were taken from each subject by ten strokes on the buccal mucosa. DNA was isolated from each swab by Chelex-100 methods. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP)was performed to determine the Fc gamma R IIIA-158 genotypes in each groups of subject. The allele frequency was in Hardy-Weinberg equilibrium in our cohort for the V-158F polymorphism in Fc gamma R IIIA gene (P>0.05). The detected frequency of 158F/F in AgP patients was significantly higher than that in CP patients (16.7% vs 0.8%, P<0.05), and also higher than that in H subjects (16.7% vs 4.3%) but was not statistically significant. No significant difference in distribution of the Fc gamma R IIIA-158V/F genotype was found between CP and H groups (P>0.05). The distribution of Fc gamma R IIIA-158F/F genotype might have effects on the phenotypes of periodontitis.

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