title: Variants in the interleukin-1 alpha and beta genes, and the risk for periodontal disease in dogs.
abstract: Elevated levels of interleukin-1 (IL-1) have been shown to amplify the inflammatory response against periodontopathogenic bacteria.In humans,polymorphisms in the IL1A and IL1B genes are the most well-studied genetic polymorphisms associated with periodontal disease (PD). In contrast to human, there is a lack of knowledge on the genetic basis of canine PD. A case-control study was conducted in which a molecular analysis of dog IL1A and IL1B genes was performed. Of the eight genetic variants identified, seven in IL1A gene and one in IL1B gene, IL1A/1_g.388A>C and IL1A /1_g.521T>A showed statistically significant differences between groups (adjusted OR (95% CI): 0.15 (0.03-0.76),P=0.022; 5.76 (1.03-32.1),P=0.046, respectively). It suggests that in the studied population the IL1A/1_g.388C allele is associated with a decreased PD risk, whereas the IL1A/1_g.521A allele can confer an increased risk. Additionally, the IL1A/2_g.515G>T variation resulted in a change of amino acid, i.e. glycine to valine. In silico analysis suggests that this change can alter protein structure and function, predicting it to be deleterious or damaging. This work suggests that IL1 genetic variants may be important in PD susceptibility in canines.
authors.affiliation: Department of Genetics and Biotechnology, University of Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, P. O. Box 1013, 5000-801 Vila Real, Portugal. cmralb@hotmail.com.
authors.forename: C
authors.initials: C
authors.lastname: Albuquerque
authors.forename: F
authors.initials: F
authors.lastname: Morinha
authors.forename: J
authors.initials: J
authors.lastname: Magalhães
authors.forename: J
authors.initials: J
authors.lastname: Requicha
authors.forename: I
authors.initials: I
authors.lastname: Dias
authors.forename: H
authors.initials: H
authors.lastname: Guedes-Pinto
authors.forename: E
authors.initials: E
authors.lastname: Bastos
authors.forename: C
authors.initials: C
authors.lastname: Viegas
mesh_terms: D000483:Alleles; D000818:Animals; D016022:Case-Control Studies; D004285:Dogs; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D014644:Genetic Variation / Q000235:genetics*; D005838:Genotype; D053582:Interleukin-1alpha / Q000235:genetics*; D053583:Interleukin-1beta / Q000235:genetics*; D010510:Periodontal Diseases / Q000235:genetics*; D012306:Risk
chemical_list: D053582:Interleukin-1alpha; D053583:Interleukin-1beta