Selenium concentration, dietary intake and risk of hepatocellular carcinoma - A systematic review with meta-analysis.

Abstract:

Introduction:Aim: this study was performed to investigate the association between selenium concentrations, dietary intake, and the risk of hepatocellular carcinoma (HCC). Methods: 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. Results: 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. Conclusion: 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. Introducción:Objetivo: este estudio se realizó para investigar la asociación entre las concentraciones de selenio, la ingesta dietética y el riesgo de carcinoma hepatocelular (CHC). Métodos: identificamos estudios elegibles en las bases de datos PubMed y EMBASE, además de las listas de referencias de los estudios originales y artículos de revisión sobre este tema hasta el 1 de febrero de 2019. Se realizó un resumen de las diferencias medias estandarizadas (SMD) con intervalos de confianza (CI) del 95% utilizando un modelo de efectos aleatorios. La heterogeneidad entre estudios se evaluó utilizando las estadísticas de Cochran Q e I2. Resultados: por último, el metaanálisis mostró que la concentración de selenio en la ingesta dietética y de selenio tisular no estaban asociadas al riesgo de HCC (SMD dietética -0,11, IC 95%: -0,26 a 0,03; SMD tisular -0,12, IC 95%: -0,56 a 0,33). Sin embargo, las muestras de uña del pie, sangre entera y suero mostraron todas ellas una asociación inversa con el riesgo de CHC (SMD ungueal -0.53, IC 95%: -0.72 a -0.35; SMD de sangre entera -2.21, IC 95%: -2.67 a -1.76; SMD tisular -1.26, IC 95%: -1.71 a -0.81). Los datos de dosis-respuesta de pocos estudios mostraron que los incrementos del selenio sérico se relacionaban fuertemente con un menor riesgo de CHC (tendencia de p ajustada < 0.05). Este estudio demostró que la concentración de selenio en las uñas del pie, en sangre entera y en suero se asocian inversamente al riesgo de CHC. Conclusión: El aumento de la concentración de selenio sérico se relacionó con menor riesgo de CHC. Sin embargo, los resultados de la ingesta dietética y los tejidos, que incluían pocos estudios, no alcanzaron la significación estadística.

journal_name

Nutr Hosp

journal_title

Nutricion hospitalaria

authors

Gong Y,Dong F,Geng Y,Zhuang H,Ma Z,Zhou Z,Huang B,Sun Z,Hou B

doi

10.20960/nh.02776

subject

Has Abstract

pub_date

2019-12-26 00:00:00

pages

1430-1437

issue

6

eissn

0212-1611

issn

1699-5198

journal_volume

36

pub_type

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