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. 1994 Jan;102(Suppl 1):275–282. doi: 10.1289/ehp.94102s1275

Risk assessment of nickel carcinogenicity and occupational lung cancer.

H M Shen 1, Q F Zhang 1
PMCID: PMC1566900  PMID: 8187719

Abstract

Recent progress in risk assessment of nickel carcinogenicity and its correlation with occupational lung cancer in nickel-exposed workers is reviewed. Epidemiological investigations provide reliable data indicating the close relation between nickel exposure and high lung cancer risk, especially in nickel refineries. The nickel species-specific effects and the dose-response relationship between nickel exposure and lung cancer are among the main questions that are explored extensively. It is also suggested that some confounding factors such as cigarette smoking cannot be neglected. The determination of nickel concentration in lung tissue may be conducive to estimating the nickel exposure level, but it is uncertain whether the high nickel content in lung tissue indicates high lung cancer risk in nickel-exposed workers. Immunologic studies suggest that the suppressive effect of nickel on NK cell activity and interferon production may also be involved in the mechanisms of nickel carcinogenesis. As a potential mutagen, nickel can cause chromosome damage both in vitro and in vivo; and on a molecular basis, nickel is found to induce DNA damage (DNA strandbreaks and crosslinks, infidelity of DNA replication, inhibition of DNA repair, and the helical transition of B-DNA to Z-DNA) by binding of nickel ions to DNA and nuclear proteins. The discovery of oncogene promises both a challenge and an opportunity for nickel carcinogenesis research. It can be predicted that, with the rapid development of molecular biology and oncology, new approaches will be established for both understanding and controlling nickel-induced occupational lung cancer.

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Selected References

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