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  • Title: An evaluation of serum microelement concentrations in lung cancer and matched non-cancer patients to determine the risk of developing lung cancer: a preliminary study.
    Author: Tominaga K, Saito Y, Mori K, Miyazawa N, Yokoi K, Koyama Y, Shimamura K, Imura J, Nagai M.
    Journal: Jpn J Clin Oncol; 1992 Apr; 22(2):96-101. PubMed ID: 1619784.
    Abstract:
    In a case-control study to determine the risk of developing lung cancer, the serum levels of vitamins A and E, carotene and selenium were determined in 31 patients, newly diagnosed as having lung cancer, and in matched controls, the said controls being selected from outpatients with no cancer. A significant, inverse association was found between serum vitamins A and E and lung cancer. The relative risk for the low vs high tertiles were, respectively, 5.94 for serum vitamin A and 8.44 for serum vitamin E. Taking histological cancer subtype into account, no relation was revealed between the microelements and squamous cell carcinoma of the lung. The relative risk for lung cancer was 6.50, however, when three, or all four, microelement levels were in the lowest tertile, compared with there being fewer than three in the lowest tertile. Even when three microelements, excluding vitamin E which had the most significant inverse association with lung cancer, were considered, the relative risk was 7.50 when any two or all three were in the lowest tertile, compared with there being just one microelement or none at all in the lowest tertile. A combined effect of vitamins A and E, carotene and selenium on the development of lung cancer has, therefore, been suggested. Further studies will thus be necessary to elucidate the cumulative effect of the serum micronutrients and trace elements, as well as the effect of single elements, on the development of lung cancer.
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