Association of IL4R-rs1805016 and IL6R-rs8192284 polymorphisms with clinical dengue in children from Colombian populations

ABSTRACT: Background: Etiologic studies provide evidence that IL-4R and IL-6R receptors may play important roles in the regulatory mechanisms of the development of clinical dengue, especially in children which is a segment of the population with high severe dengue risk. Moreover, the allele frequencies and genetic associations may be influenced by the populational genetic background. Therefore, we performed a case-control study to evaluate possible associations between SNPs in IL4R and IL6R genes and clinical dengue in children from two Colombian populations. Methods: We genotyped the rs1805016 (IL4R) and rs8192284 (IL6R) by PCR-RFLP method, in 298 symptomatic children and 648 asymptomatic controls. Three individual genetic ancestral proportions (APs) (European, Amerindian, African) were inferred by genotyping 29 AIMs (Ancestry informative markers). The variables gender, APs, and the population of origin were used like confusion variables. Results: We found IL4R-rs1805016 GG genotype and G-allele carriers and IL6R-rs8192284 AA genotype associated with clinical dengue in the pooled and Huila samples. Nevertheless, we found no association of these polymorphisms in the sample of Antioquia. Conclusions: For the first time, we report SNPs in IL4R and IL6R genes associated with clinical dengue, which contributes to understanding the genetic susceptibility to dengue disease. Moreover, these results may be influenced by genetic background and must be evaluated through functional analysis.

• Autores: Bedoya Berrío, Gabriel de Jesús; Useche Salvador, Yerly Magnolia; Gallego Lopera, Berta Natalia; Salgado García, Doris Martha; Narváez Rojas, Carlos Fernando; Campo Nieto, Omer
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2019
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/42107
• Acceso en línea: https://hdl.handle.net/10495/42107
• Palabra clave: Estudios de Casos y Controles; Case-Control Studies; Dengue; Frecuencia de los Genes; Gene Frequency; Estudios de Asociación Genética; Genetic Association Studies; Predisposición Genética a la Enfermedad; Genetic Predisposition to Disease; Genotipo; Genotype; Subunidad alfa del Receptor de Interleucina-4; Interleukin-4 Receptor alpha Subunit; Reacción en Cadena de la Polimerasa; Polymerase Chain Reaction; Polimorfismo de Longitud del Fragmento de Restricción; Polymorphism, Restriction Fragment Length; Polimorfismo de Nucleótido Simple; Polymorphism, Single Nucleotide; Receptores de Interleucina-6; Receptors, Interleukin-6; Colombia - epidemiología; Colombia - epidemiology; https://id.nlm.nih.gov/mesh/D016022; https://id.nlm.nih.gov/mesh/D003715; https://id.nlm.nih.gov/mesh/D005787; https://id.nlm.nih.gov/mesh/D056726; https://id.nlm.nih.gov/mesh/D020022; https://id.nlm.nih.gov/mesh/D005838; https://id.nlm.nih.gov/mesh/D053662; https://id.nlm.nih.gov/mesh/D016133; https://id.nlm.nih.gov/mesh/D012150; https://id.nlm.nih.gov/mesh/D020641; https://id.nlm.nih.gov/mesh/D019947; https://id.nlm.nih.gov/mesh/D003105
• Rights: openAccess
• License: http://creativecommons.org/licenses/by-nc-nd/2.5/co/