Negative association between antioxidant vitamin intake and non-alcoholic fatty liver disease in Chinese non-diabetic adults: mediation models involving superoxide dismutase

• Published in: Free radical research 2020-09, Vol.54 (8-9), p.670-677
• Main Authors: Ma, Chifa, Liu, Yiwen, He, Shuli, Zeng, Jingbo, Li, Pingping, Ma, Chunxiao, Ping, Fan, Zhang, Huabing, Xu, Lingling, Li, Wei, Li, Yuxiu
• Format: Article
• Language: English
• Subjects: Antioxidant vitamin intake; non-alcoholic fatty liver disease; oxidative stress related markers; superoxide dismutase
• ISSN: 1071-5762; 1029-2470
• DOI: 10.1080/10715762.2020.1825705

We aimed to explore the association between antioxidant vitamin intake, oxidative stress related markers and non-alcoholic fatty liver disease (NAFLD) by a cross-sectional analysis. A total of 241 non-diabetic participants from a Chinese rural cohort were included. NAFLD was diagnosed by abdominal ultrasound (NAFLD, n = 71; Non-NAFLD, n = 171). Dietary intake was assessed by a 24-h food recall. Plasma oxidative stress related markers superoxide dismutase (SOD), glutathione reductase (GR) and 8-oxo-2′-deoxyguanosine(8-oxo-dG) were measured. The association between dietary antioxidant vitamin intake, oxidative stress related markers and NAFLD were analysed by Spearman correlation analysis and multiple logistic regression analysis. Mediation models were established to examine whether SOD mediated the association between dietary vitamin A or α-tocopherol intake and NAFLD. Spearman correlation analysis indicated that dietary vitamin A and α-tocopherol intake were positively correlated with SOD (p