Insulin resistance and not steatosis is associated with modifications in oxidative stress markers in chronic hepatitis C, non-3 genotype
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2009-01-01
Autores
Oliveira, Ana C. 
Parise, Edison Roberto
Catarino, Regina M.
Lanzoni, Valeria Pereira
Leite-Mór, Marilisa Moraes Barros
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Background: Modifications of oxidative stress are reported in hepatitis C. the relationship between insulin resistance (IR), steatosis and oxidative stress is not established. Materials and methods: One hundred and eighty-seven HCV-RNA patients were assessed by determination of biochemical, metabolic and viral features, HOMA-IR and morphological alterations. in the 52-non-3 genotypes sub-group and 35 healthy individuals, thiobarbituric acid (TBARS), total glutathione (total-GSH), vitamins C and E, lycopene, beta-carotene, glutathione peroxidase (GPx), catalase and superoxide dismutase were determined. Results: in non-3 genotype patients, steatosis was associated with higher values of BMI, HOMA-IR and triglycerides. in the 52-HCV sub-group, values of TBARS, GPx and total-GSH differ from the control group. Despite these, differences could not be observed according to the presence of steatosis, patients with IR presented significant differences regarding total-GSH (p = 0.019), beta-carotene (p = 0.006), lycopene (p = 0.005) and GPx (p = 0.009). Conclusion: in non-3 genotype HCV carries, IR, and not steatosis, is associated with modifications in serum levels of oxidative stress.
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Free Radical Research. Abingdon: Taylor & Francis Ltd, v. 43, n. 12, p. 1187-1194, 2009.