Research Papers:

Meta-analysis of the correlation between selenium and incidence of hepatocellular carcinoma

Ziwei Zhang, Mingyu Bi, Qi Liu, Jie Yang and Shiwen Xu _

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Oncotarget. 2016; 7:77110-77116. https://doi.org/10.18632/oncotarget.12804

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Ziwei Zhang1, Mingyu Bi2, Qi Liu1, Jie Yang1, Shiwen Xu1

1College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China

2Harbin Railway Public Security Bureau Police Dog Base, Harbin 150056, P. R. China

Correspondence to:

Shiwen Xu, email: [email protected]

Keywords: hepatocellular carcinoma, selenium, correlation, meta-analysis

Received: September 12, 2016     Accepted: October 14, 2016     Published: October 21, 2016


Hepatocellular carcinoma (HCC) is the most common cancer type. There is a correlation between selenium (Se) deficiency and the incidence of HCC. To clarify the effects of Se level on the risk of HCC patients, a meta-analysis was performed. A total of 9 articles published between 1994 and 2016 worldwide were selected through searching PubMed, EMBASE, web of science, Cochrane Library, Springer Link, Chinese National Knowledge Infrastructure (CNKI), and Chinese Biology Medicine (CBM), and the information were analyzed using a meta-analysis method. Heterogeneity was assessed by using the I2 index. Publication bias was evaluated by Begg’s Test analysis. Pooled analysis indicated that patients with HCC had lower Se levels than the healthy controls [standardized mean difference (SMD)= −1.08, 95% confidence intercal (CI) = (−0.136, −0.08), P < 0.001]. Further subgroup analysis showed this effect to be independent of the study design, race or sample collection. In conclusion, this meta-analysis suggested an inverse correlation between Se level and the risk of HCC in humans patients.

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