title: Interleukin-10 (-592 C/A) and interleukin-12B (+16974 A/C) gene polymorphisms and the interleukin-10 ATA haplotype are associated with periodontitis in a Taiwanese population.
abstract: OBJECTIVE
  Single nucleotide polymorphisms are assumed to be associated with the differential production of cytokines. We evaluated gene polymorphisms of interleukin-10 (-592C>A, -819C>T and -1082G>A) and interleukin-12B (+16974) in patients with chronic periodontitis (n = 145) and generalized aggressive periodontitis (n = 65) in comparison with healthy controls (n = 126).
  
  
  METHODS
  Gene promoter polymorphisms were analyzed by polymerase chain reaction with sequence-specific primers. Genotype and allele frequencies were analyzed using the chi-square test and logistic regression analysis.
  
  
  RESULTS
  The interleukin-10 -592 polymorphism showed significant differences among the three groups (p = 0.0330). The genotype frequencies of the -592 locus between the chronic periodontitis and healthy control groups were significantly different (AC vs. AA: odds ratio = 0.33). The combination ATA/ATA seemed to be associated with susceptibility to generalized aggressive periodontitis (p = 0.0276). Patients with the composite ATA/ACC were less likely to develop chronic periodontitis (p = 0.0248). The CC genotype of interleukin-12B (+16974) was related to chronic periodontitis (CC vs. AA, p = 0.0211; CC vs. AA+AC, p = 0.0187). The AC heterozygosity of interleukin-12B was significantly lower in chronic periodontitis vs. healthy controls (p = 0.0500).
  
  
  CONCLUSIONS
  The interleukin-10 gene polymorphism at position -592C>A may be associated with a lower risk for development of chronic periodontitis. The interleukin-10 haplotype ATA is associated with generalized aggressive periodontitis. On the other hand, interleukin-12B genetic variants at position +16974 are associated with susceptibility to chronic periodontitis.
authors.affiliation: Graduate Institute of Dental Sciences (Faculty of Dentistry), College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: K-F
authors.initials: KF
authors.lastname: Hu
authors.forename: K-C
authors.initials: KC
authors.lastname: Huang
authors.forename: Y-P
authors.initials: YP
authors.lastname: Ho
authors.forename: Y-C
authors.initials: YC
authors.lastname: Lin
authors.forename: K-Y
authors.initials: KY
authors.lastname: Ho
authors.forename: Y-M
authors.initials: YM
authors.lastname: Wu
authors.forename: Y-H
authors.initials: YH
authors.lastname: Yang
authors.forename: C-C
authors.initials: CC
authors.lastname: Tsai
mesh_terms: D000328:Adult; D010520:Aggressive Periodontitis / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D016022:Case-Control Studies; D055113:Chronic Periodontitis / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006239:Haplotypes; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics*; D053762:Interleukin-12 Subunit p40 / Q000235:genetics*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic; D013624:Taiwan
chemical_list: D053762:Interleukin-12 Subunit p40; D016753:Interleukin-10