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. 2020 Jun 10:12:4441-4451.
doi: 10.2147/CMAR.S250592. eCollection 2020.

Five Serum Trace Elements Associated with Risk of Cardia and Noncardia Gastric Cancer in a Matched Case-Control Study

Yulan Lin  1 , Chuancheng Wu  2   3 , Wei Yan  4 , Saixiong Guo  4 , Baoying Liu  2   3
Affiliations

Five Serum Trace Elements Associated with Risk of Cardia and Noncardia Gastric Cancer in a Matched Case-Control Study

Yulan Lin et al. Cancer Manag Res. .

Abstract

Background: Serum trace elements have for some time been suggested to influence the development of gastric cancer, but evidence is still lacking.

Methods: All newly diagnosed patients with gastric cancer were compared with healthy controls 1:1 matched by sex, age (±3 years), and place of residence during 2013-2015. The serum concentration of all trace elements was analyzed using inductively coupled plasma mass spectrometry. Heliobacter pylori infections in cases were diagnosed using the rapid urease test, while in controls were detected using the colloidal gold method.

Results: A total of 122 cases of gastric cardia cancer (GCC) and 177 gastric noncardia cancer (NCGC), and 299 matched healthy controls were included. Positive associations were found between serum copper and copper/zinc ratio and risk of overall gastric cancer (OR4th vs 1st quartile: 2.42, 95% CI: 1.10-5.32 for copper; OR4th vs 1st quartile: 11.7, 95% CI: 3.83-35.6 for copper/zinc ratio), and for both GCC and NCGC subtypes. Serum selenium was inversely associated with the risk of NCGC (OR4th vs 1st quartile: 0.18, 95% CI: 0.07-0.51), while molybdenum seems to reduce the risk of GCC (OR4th vs 1st quartile: 0.12, 95% CI: 0.03-0.47). Strong inverse associations were also detected between serum calcium and risk of all groups of gastric cancer (all p for trend<0.05).

Conclusion: The current study indicated statistically significant positive associations between serum copper, copper/zinc ratio, and gastric cancer, as well as inverse associations among selenium, molybdenum, and calcium. The results shall be carefully interpreted before further in vivo animal studies show definitive evidence.

Keywords: environment; gastric cancer; nutrition; serum trace elements.

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Conflict of interest statement

The authors report no conflicts of interest in this work.

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