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Association of TNF -1031 C/C as a potential protection marker for leprosy development in Amazonas state patients, Brazil.

Abstract

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% IC = 0.01-0.82; p = 0.012). The -857 C/T genotype may be associated with susceptibility to leprosy (OR = 1.81; 95% IC = 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.

More information

Type
Journal Article
Author
Silva G A V
Ramasawmy R
Boechat A L
Morais A C
Carvalho B K S
Sousa K B A
Souza V C
Cunha M G S
Barletta-Naveca R H
Santos M P
Naveca F G
Year of Publication
2015
Journal
Human immunology
Language
eng
ISSN Number
1879-1166
DOI
10.1016/j.humimm.2015.01.011
Alternate Journal
Hum. Immunol.
Publication Language
eng