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Nutrición Hospitalaria

versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611


GONG, Yuanfeng et al. Selenium concentration, dietary intake and risk of hepatocellular carcinoma – A systematic review with meta-analysis. Nutr. Hosp. [online]. 2019, vol.36, n.6, pp.1430-1437.  Epub 24-Feb-2020. ISSN 1699-5198.


this study was performed to investigate the association between selenium concentrations, dietary intake, and the risk of hepatocellular carcinoma (HCC).


we identified eligible studies in PubMed and EMBASE databases, in addition to the reference lists of original studies and review articles on this topic, up to 1 Feb 2019. A summary of standardized mean differences (SMD) with 95% confidence intervals (CI) was calculated using a random-effects model. Heterogeneity between studies was assessed using Cochran Q and I2 statistics.


finally, a meta-analysis showed that dietary intake of selenium and tissue selenium concentration were not associated with HCC risk (dietary SMD = -0.11, 95% CI-0.26 to 0.03; tissue SMD = -0.12, 95% CI-0.56 to 0.33). However, samples from toenail, whole blood, and serum all showed an inverse association with HCC risk (toenail SMD = -0.53, 95% CI-0.72 to -0.35; whole blood SMD = -2.21, 95% CI-2.67 to -1.76; tissue SMD = -1.26, 95% CI-1.71 to -0.81). Dose-response data from few studies showed that an extra increase in serum selenium was dramatically related with a lower risk of HCC (adjusted p-trend < 0.05). This study showed that selenium concentration in toenail, whole blood and serum was inversely associated with HCC risk.


increased concentration in serum selenium was related to a lower risk of HCC. However, these results based on dietary intake and tissue samples, which included few studies, did not reach statistical significance.

Palabras clave : Selenium; Selenoprotein; Hepatocellular carcinoma; Morbidity; Meta-analysis.

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