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Sakoda, L.C. et al.

Sakoda, Graubard, Evans, London, Lin, Shen, McGlynn,

Toenail selenium and risk of hepatocellular carcinoma mortality in Haimen City, China.

Selenium (Se) is an essential trace mineral with known anticarcinogenic properties in humans. However, few studies have examined the association between Se nutrient status and risk of liver cancer. We conducted a nested case-control study comparing the Se content in toenail clippings of 166 individuals (154 men, 12 women) with hepatocellular carcinoma ( HCC) to 394 healthy controls (360 men, 34 women) in Haimen City, China, where HCC is a leading cause of mortality. Toenail Se concentration was measured by inductively coupled plasma-optical emission spectroscopy. Median toenail Se was lower for HCC cases than controls (p = 0.03). Adjusted odds ratios and 95% confidence intervals for HCC mortality by increasing quartile of toenail Se were 1.00 (reference), 0.58 (0.32-1.03), 0.83 (0.48-1.42) and 0.50 (0.28-0.90), with a marginally significant trend in risk observed (p for trend = 0.06). This inverse association appeared stronger among those who did not consume alcohol and among women. Future studies are needed to examine the interrelationship between Se, viral hepatitis infection and HCC in order to better understand the etiologic mechanisms involved and evaluate the true chemopreventive potential of Se compounds for liver diseases.[1]

References

Toenail selenium and risk of hepatocellular carcinoma mortality in Haimen City, China. Sakoda, L.C., Graubard, B.I., Evans, A.A., London, W.T., Lin, W.Y., Shen, F.M., McGlynn, K.A. Int. J. Cancer (2005) [Pubmed]

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