title: Distribution of the IL-1RN, IL-6, IL-10, INF-γ, and TNF-α Gene Polymorphisms in the Mexican Population.
abstract: BACKGROUND
  Cytokines are a group of polypeptides with an important role in the inflammatory response. It has been suggested that certain polymorphisms located in several cytokine genes are associated with different diseases. The aim of the present study was to establish the gene frequency of 13 polymorphisms of the IL-1RN, IL-6, IL-10, INF-γ, and TNF-α genes in a Mexican population. These polymorphisms have been reported in several populations, with important variation in frequency according to the studied population.
  
  
  METHODS
  Thirteen polymorphisms (rs419598, rs315951, rs2234663, rs3811058, rs1800796, rs2069827, rs1800896, rs1800871, rs1800872, rs1800629, rs2069709, rs2069710, and rs361525) were analyzed by 5' exonuclease TaqMan genotyping assays in a group of 248 healthy unrelated Mexican individuals.
  
  
  RESULTS
  The results obtained showed that the studied Mexican population presents significant differences (p<0.05) in the distribution of the IL1RN (rs419598, rs315951, and and rs2234663), IL1F10 (rs3811058), IL6 (rs1800796, rs2069827), IL10 (rs1800896, rs1800871, and rs1800872), and TNF-α (rs1800629) polymorphisms when compared to Caucasian, Asian, and African populations.
  
  
  CONCLUSIONS
  In summary, the distribution of the IL-1RN, IL-6, IL-10, and TNF-α cytokine gene polymorphisms distinguishes the studied Mexican population from other groups. Since the alleles of these cytokines are associated with the development of several inflammatory diseases, knowledge of the distribution of these alleles in the studied Mexican population could be helpful to understand their true role as a genetic susceptibility marker in this population.
authors.affiliation: Department of Molecular Biology, Instituto Nacional de Cardiología "Ignacio Chávez," Mexico City, Mexico.
authors.forename: Gilberto
authors.initials: G
authors.lastname: Vargas-Alarcon
authors.forename: Julián
authors.initials: J
authors.lastname: Ramírez-Bello
authors.forename: Teresa
authors.initials: T
authors.lastname: Juárez-Cedillo
authors.forename: Silvestre
authors.initials: S
authors.lastname: Ramírez-Fuentes
authors.forename: Silvia
authors.initials: S
authors.lastname: Carrillo-Sánchez
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Fragoso
mesh_terms: D016207:Cytokines / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D007371:Interferon-gamma / Q000235:genetics; D053590:Interleukin 1 Receptor Antagonist Protein / Q000235:genetics; D016753:Interleukin-10 / Q000235:genetics; D015850:Interleukin-6 / Q000235:genetics; D008297:Male; D008800:Mexico; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics
chemical_list: D016207:Cytokines; C508609:IL10 protein, human; C507763:IL1RN protein, human; C508600:IL6 protein, human; D053590:Interleukin 1 Receptor Antagonist Protein; D015850:Interleukin-6; D014409:Tumor Necrosis Factor-alpha; D016753:Interleukin-10; D007371:Interferon-gamma