Association of interleukin-10 polymorphisms with risk factors of Alzheimer’s disease and other dementias (SADEM study)

• Published in: Immunology letters 2016-09, Vol.177, p.47-52
• Main Authors: Vargas-Alarcón, Gilberto, Juárez-Cedillo, Enrique, Martínez-Rodríguez, Nancy, Fragoso, José Manuel, García-Hernández, Normand, Juárez-Cedillo, Teresa
• Format: Article
• Language: English
• Subjects: Aged; Aged, 80 and over; Alzheimer Disease - genetics; Alzheimer Disease - immunology; Alzheimer's disease; Dementia; Dementia - genetics; Dementia - immunology; Female; Gene Frequency; Genetic association; Genetic Association Studies; Genetic Predisposition to Disease; Genotype; Haplotypes; Humans; Interleukin; Interleukin-10 - genetics; Male; Mexico; Polymorphism, Single Nucleotide; Polymorphisms; Risk Factors
• ISSN: 0165-2478; 1879-0542
• DOI: 10.1016/j.imlet.2016.07.011

•This research hypothesizes possible mechanisms involved in the pathological process of dementia, as the role that IL-10 in this disease.•Limiting the inflammatory response could slow the development and progression of the disease.•These results clarify an association not only between Interleukin-10 and AD but also with other dementias in the Mexican population. Some studies have reported a genetic association between single nucleotide polymorphisms (SNPs) in the promoter region of Interleukin (IL) 10 and Alzheimer's disease (AD), with conflicting results. To further investigate the proposed association and to clarify the role of cytokines as a potential cause for AD susceptibility, we analyzed genotypes, allele distributions and haplotypes of IL-10 promoter polymorphisms −1082 (rs1800896) and −819 (rs1800871) in a Mexican population: 986 normal controls and 221 cases divided as follows: 122 with Alzheimer disease (AD), 67 with (VaD) and 32 with mixed dementia (AD/VaD). Patients with dementia showed increased frequency of “ATA, CTG, and CTA” haplotypes when compared to controls. We identified two risk haplotypes: ATA (OR=3.56, 95%CI=2.84–4.45, p