Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 20, Issue 14, Pages -Publisher
MDPI
DOI: 10.3390/ijms20143589
Keywords
Alcoholic liver disease; Nrf2; Polymorphism; NFE2L2 gene
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [CNPq 159892/2018-0]
- Fundacao de Amparo a Pesquisa de Minas Gerais (FAPEMIG)
- Coordenacao de Aperfeicoamento de Pessoal (CAPES)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [FAPESP 2018/20014-0]
- Liver Center at UFMG
- NIH [DK57751, DK34989, DK114041, DK112797]
- Gladys Phillips Crofoot Professorship
- NATIONAL CENTER FOR ADVANCING TRANSLATIONAL SCIENCES [UL1TR001863] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES [R01DK114041, R01DK112797, P01DK057751, P30DK034989] Funding Source: NIH RePORTER
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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.
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