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metadata.dc.type: Artigo de Periódico
Issue Date: Sep-2015
metadata.dc.creator: SANTOS, Kemper Nunes dos
ALMEIDA, Marcella Kelly Costa de
FECURY, Amanda Alves
COSTA, Carlos Araújo da
MARTINS, Luisa Caricio
Title: Analysis of polymorphisms in the interleukin 18 gene promotor (-137 g/c and -607 c/a) in patients infected with hepatitis c virus from the brazilian amazon
Other Titles: Análise do polimorfismo na região promotora do gene da interleucina 18 (-137 G/C e -607 C/A) em pacientes portadores do vírus da hepatite C na Amazônia Brasileira
Citation: SANTOS, Kemper Nunes dos et al. Analysis of polymorphisms in the interleukin 18 gene promotor (-137 g/c and -607 c/a) in patients infected with hepatitis c virus from the brazilian amazon. Arquivos de Gastroenterologia, São Paulo, v. 52, n. 3, p. 222-227, jul./set. 2015. Disponível em: <>. Acesso em: 21 mar. 2017. <>.
Abstract: Background - The hepatitis C virus has been recognized as the leading cause of chronic liver disease in the world. Host genetic factors have been implicated in the persistence of hepatitis C virus infection. Single nucleotide polymorphisms at positions -607 C/A (rs1946518) and -137 G/C (rs187238) in the IL-18 gene promoter have been suggested to be associated with delayed hepatitis C virus clearance and persistence of the disease. Objective - Identify these polymorphisms in a population infected with hepatitis C virus from the Brazilian Amazon region. Methods - In a cross-sectional analytical study conducted in Belém, Pará, Brazil, 304 patients infected with hepatitis C virus were divided into two groups: group A, patients with persistent infection; group B, patients with spontaneous clearance. The control group consisted of 376 volunteers not infected with hepatitis C virus. Samples were analyzed by RT-PCR for the detection of viral RNA and by RFLP-PCR to evaluate the presence of the -137 G/C and -607 C/A IL-18 gene promoter polymorphisms. Results - Comparison of polymorphism allele frequencies between the patient and control groups showed a higher frequency of allele C at position -607 among patients (P=0.02). When the association between the polymorphisms and viral infection was analyzed, patients carrying genotype C/A at position -607 were found to be at higher risk of persistent hepatitis C virus infection (P=0.03). Conclusion - the present results suggest a possible role of the -607 IL-18 gene promoter polymorphism in the pathogenesis of hepatitis C virus infection.
Keywords: Amazônia brasileira
Hepatite C
Análise estrutural
Medicina tropical
Análise histopatológica
Series/Report no.: Arquivos de Gastroenterologia
ISSN: 1678-4219 Brasil
Publisher: Universidade Federal do Pará
metadata.dc.publisher.initials: UFPA
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - NMT

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