Association of TNF −1031 C/C as a potential protection marker for leprosy development in Amazonas state patients, Brazil
| Autor: | Felipe Gomes Naveca, Rajendranath Ramasawmy, K.B.A. Sousa, Maria da Graça Souza Cunha, M.P. Santos, Raphaela Honorato Barletta-Naveca, Victor Costa de Souza, Antonio Luiz Boechat, B.K.S. Carvalho, George Silva, A.C. Morais |
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| Rok vydání: | 2015 |
| Předmět: |
Genotype
DNA Mutational Analysis Immunology Single-nucleotide polymorphism Polymorphism Single Nucleotide Gene Frequency Predictive Value of Tests Leprosy medicine Humans Immunology and Allergy Genetic Predisposition to Disease Allele Promoter Regions Genetic Allele frequency Mycobacterium leprae Genetic Association Studies biology Tumor Necrosis Factor-alpha Promoter General Medicine medicine.disease biology.organism_classification Genetic marker Disease Progression Biomarkers Brazil |
| Zdroj: | Human Immunology. 76:137-141 |
| ISSN: | 0198-8859 |
| Popis: | Polymorphisms present in the TNF promoter region has shown to influence the gene transcription. Leprosy displays different clinical manifestations according to the immune responses of the individual infected with Mycobacterium leprae . In this study, we evaluated the single nucleotide polymorphisms (SNPs) −238 G/A (rs361525), −308 G/A (rs1800629), −857 C/T (rs1799724), −863 A/C (rs1800630) and −1031 T/C (rs1799964) in the promoter region of the TNF to see whether these SNPs influence host-susceptibility to leprosy and the different clinical manifestation. Nucleotide sequencing was performed with DNA samples from 108 leprosy patients and 253 control subjects. An association between −1031 C/C genotype and protection from leprosy was observed when leprosy patients were compared to controls (OR 0.11; 95% CI = 0.01–0.82; p = 0.012). The −857 C/T genotype may be associated with susceptibility to leprosy (OR = 1.81; 95% CI = 1.09–3.00; p = 0.028). Similar genotype and allele frequencies for the SNPs −308 G/A and −238 G/A were observed between leprosy patients and control subjects. Altogether, TNF polymorphisms in the promoter region may be predictive of leprosy outcome. |
| Databáze: | OpenAIRE |
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