https://repositorio.ufba.br/handle/ri/13889
Tipo: | Artigo de Periódico |
Título: | Variants in the toll-like receptor signaling pathway and clinical outcomes of malaria |
Título(s) alternativo(s): | Journal of Infectious Diseases |
Autor(es): | Leoratti, Fabiana M. S. Farias, Lilian Alves, Fabiana P. Suarez Mútis, Martha C. Coura, José R. Kalil, Jorge Camargo, Erney Plessmann Moraes, Sandra L Ramasawmy, Rajendranath |
Autor(es): | Leoratti, Fabiana M. S. Farias, Lilian Alves, Fabiana P. Suarez Mútis, Martha C. Coura, José R. Kalil, Jorge Camargo, Erney Plessmann Moraes, Sandra L Ramasawmy, Rajendranath |
Abstract: | Background. Malaria is one of the most significant infectious diseases in the world and is responsible for a large proportion of infant deaths. Toll-like receptors (TLRs), key components of innate immunity, are central to countering infection. Variants in the TLR-signaling pathway are associated with susceptibility to infectious diseases. Methods. We genotyped single nucleotide polymorphisms (SNPs) of the genes associated with the TLR-signaling pathway in patients with mild malaria and individuals with asymptomatic Plasmodium infections by means of polymerase chain reaction. Results. Genotype distributions for the TLR-1 I602S differed significantly between patients with mild malaria and persons with asymptomatic infection. The TLR-1 602S allele was associated with an odds ratio (OR) of 2.2 (P = .003; Pcorrected = .015) for malaria among patients with mild malaria due to any Plasmodium species and 2.1 (P = .015; Pcorrected = .75) among patients with mild malaria due to Plasmodium falciparum only. The TLR-6 S249P SNP showed an excess of homozygotes for the TLR-6 249P allele in asymptomatic persons, compared with patients with mild malaria due to any Plasmodium species (OR 2.1; 95% confidence interval [CI], 1.1–4.2; P = .01; Pcorrected = .05), suggesting that the TLR-6 249S allele may be a risk factor for malaria (OR, 2.0; 95% CI, 1.1–3.7; P = 0.01; Pcorrected = .05). The TLR-9 -1486C allele showed a strong association with high parasitemia (P < .001). Conclusions. Our findings indicate that the TLR-1 and TLR-6 variants are significantly associated with mild malaria, whereas the TLR-9-1486C/T variants are associated with high parasitemia. These discoveries may bring additional understanding to the pathogenesis of malaria. |
Tipo de Acesso: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/13889 |
Data do documento: | 2008 |
Aparece nas coleções: | Artigo Publicado em Periódico (Faculdade de Medicina) |
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J Infect Dis.-2008-Leoratti-772-80.pdf | 109,91 kB | Adobe PDF | Visualizar/Abrir |
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