Autor(es):
Santos, Kemper Nunes dos ; Florentino, Rodrigo M ; Fran?a, Andressa ; Lima Filho, Ant?nio Carlos Melo ; Santos, Marcone Lisboa dos ; Missiaggia, Dabny ; Fonseca, Matheus de Castro ; Costa, Igor Brasil ; Vidigal, Paula Vieira Teixeira ; Nathanson, Michael H ; Lemos, Fernanda de Oliveira ; Leite, M. Fatima
Data: 2019
Origem: Oasisbr
Assunto(s): F?gado / anatomia & histologia; Cirrose Hep?tica / patologia; Fator 2 Relacionado a NF-E2 / gen?tica; Alcoolismo / diagn?stico; Genes / imunologia; Polimorfismo Gen?tico / imunologia; Marcadores Gen?ticos
Descrição
This research was funded by Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq 159892/2018-0), Funda??o de Amparo ? Pesquisa de Minas Gerais (FAPEMIG), Coordena??o de Aperfei?oamento de Pessoal (CAPES), Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo (FAPESP 2018/20014-0), Liver Center at UFMG, NIH (DK57751, DK34989, DK114041, and DK112797 to MHN). This work also was supported by the Gladys Phillips Crofoot Professorship.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Centro de Pesquisa em Energia e Materiais. Laborat?rio Nacional de Bioci?ncias. Campinas, SP, Brazil.
Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Ananindeua, PA, Brasil.
Universidade Federal de Minas Gerais. Belo Horizonte, MG, Brazil.
Yale University School of Medicine. Section of Digestive Diseases. New Haven, CT, USA.
Alcoholic liver disease (ALD) is a highly prevalent spectrum of pathologies caused by alcohol overconsumption. Morbidity and mortality related to ALD are increasing worldwide, thereby demanding strategies for early diagnosis and detection of ALD predisposition. A potential candidate as a marker for ALD susceptibility is the transcription factor nuclear factor erythroid-related factor 2 (Nrf2), codified by the nuclear factor erythroid 2-related factor 2 gene (NFE2L2). Nrf2 regulates expression of proteins that protect against oxidative stress and inflammation caused by alcohol overconsumption. Here, we assessed genetic variants of NFE2L2 for association with ALD. Specimens from patients diagnosed with cirrhosis caused by ALD were genotyped for three NFE2L2 single nucleotide polymorphisms (SNP) (SNPs: rs35652124, rs4893819, and rs6721961). Hematoxylin & eosin and immunohistochemistry were performed to determine the inflammatory score and Nrf2 expression, respectively. SNPs rs4893819 and rs6721961 were not specifically associated with ALD, but analysis of SNP rs35652124 suggested that this polymorphism predisposes to ALD. Furthermore, SNP rs35652124 was associated with a lower level of Nrf2 expression. Moreover, liver samples from ALD patients with this polymorphism displayed more severe inflammatory activity. Together, these findings provide evidence that the SNP rs35652124 variation in the Nrf2-encoding gene NFE2L2 is a potential genetic marker for susceptibility to ALD.
