From the LibraryBased upon the significant research progress made by our group and others in better understanding the anticancer effects of the trace mineral selenium , Dr. Waters developed a course for graduate students at Purdue University, “Selenium in Health and Disease”. The course focused on the relationship between selenium status and cancer risk, particularly the risk of prostate cancer. Discussions addressed the issues of measurement and epidemiology, mechanisms studied using in vitro and in vivo animal models, and interventional studies with human subjects. Students enrolled in the 3 credit hour course for the first time in the Spring 2004 semester. The following list of 39 published scientific articles highlight the important role of selenium in health and disease. Review Articles on Selenium in Health and DiseaseRayman MP. The importance of selenium to human health. Lancet 2000; 356: 233-241.
This paper provides a critical review of the role of selenium in human health and disease. Combs GF Jr, Gray WP. Chemopreventive agents: selenium. Pharmacol Ther 1998; 79: 179-192.
The possible mechanisms by which selenium exerts anticancer effects are reviewed. Vinceti M, Rovesti S, Bergomi M, Vivoli G. The epidemiology of selenium and human cancer. Tumori 2000; 86: 105-118.
An in-depth analysis is presented linking selenium and human cancer risk based upon Epidemiology and Measurement of Selenium Status--GeneralWillett WC, Morris JS, Pressel S, Taylor JO, Polk FB, Stampfer MJ, Rosner B, Schneider K. Prediagnostic serum selenium and risk of cancer. Lancet 1983; 2:130-134.
In this seminal prospective study, investigators show that low selenium status is a significant risk factor for subsequent cancer development. Knekt P, Aromaa A, Maatela J, Alfthan G, Aaran RK, Hakama M, Hakulinen T, Peto R, Teppo L. Serum selenium and subsequent risk of cancer among Finnish men and women. J Natl Cancer Inst 1990; 82: 864-868.
Low serum selenium may be a risk factor for cancer, especially among men. Hunter DJ, Morris JS, Chute CG, Kushner E, Colditz GA, Stampfer MJ, Speizer F, Willett WC. Predictors of selenium concentration in human toenails. J Am J Epidemiol 1990; 132: 114-122.
The use of toenail selenium concentration to assess dietary selenium intake is validated. Van den Brandt PA, Goldbohm RA, van’t Veer P, Bode P, Hermus RJJ, Sturmans F. Predictors of toenail selenium levels in men and women. Cancer Epidemiol Biomarker Prev 1990; 2: 107-112.
Compared to non-smokers, toenail selenium concentration in smokers is significantly lower. Garland M, Morris JS, Stampfer MJ, Colditz GA, Spate VL, Baskett CK, Rosner B, Speizer FE, Willett WC, Hunter DJ. Prospective study of toenail selenium levels and cancer among women. J Natl Cancer Inst 1995; 87: 497-505.
Selenium status is not a significant risk factor for cancer in the women of the Nurses’ Health Study. Rudolph RE, Vaughan TL, Kristal AR, Blount PL, Lenine DS, Galipeau PC, Prevo LJ, Sanchez CA, Rabinovitch PS, Reid BJ. Serum selenium levels in relation to markers of neoplastic progression among persons with Barrett’s esophagus. J Natl Cancer Inst 2003; 95: 750-757.
In this cross-sectional study, high serum selenium is associated with reduced risk of esophageal cancer in a high-risk population. Epidemiology Studies on the Relationship Between Selenium and Prostate CancerYoshizawa K, Willett WC, Morris JS, Stampfer MJ, Spiegelman D, Rimm EB, Giovannucci E. Study of prediagnostic selenium level in toenails and the risk of advanced prostate cancer. J Natl Cancer Inst 1998; 90: 1219-1224.
In this seminal paper, men with the lowest toenail selenium concentration have the highest risk for subsequent prostate cancer development. Helzlsouer KJ, Huang H, Alberg AJ, Hoffman S, Burke A, Norkus EP, Morris JS, Comstock GW. Association between a-tocopherol, g-tocopherol, selenium, and subsequent prostate cancer. J Natl Cancer Inst 2000; 92: 2018-2023.
The relationship between selenium and vitamin E status and prostate cancer risk in a Washington County, Maryland cohort is reported. Brooks JD, Metter EJ, Daniel WC, Sokoll LJ, Landis P, Melson WG, Muller D, Andres R, Carter HB. Plasma selenium level before diagnosis and the risk of prostate cancer development. J Urol 2001; 10: 1069-1076.
A threshold effect between plasma selenium level and subsequent risk of prostate cancer is demonstrated in the Baltimore Longitudinal Study on Aging. Goodman GE, Schaffer S, Bankson DD, Hughes MP, Omenn GS, the Carotene and the Retinol Efficacy Trial (CARET) Co-Investigators. Predictors of serum selenium in cigarette smokers and the lack of association with lung and prostate cancer risk. Cancer Epidemiol Biomarker Prev 2001; 10: 1069-1076.
No significant association is found between low serum selenium and risk of lung or prostate cancer in the CARET study. Vogt TM, Siegler RG, Graudbard BI, Swanson CA, Greenberg RS, Schoenberg JB, Swanson GM, Hayes RB, Mayne ST. Serum selenium and risk of prostate cancer in U.S. blacks and whites. Int J Cancer 2002; 103: 664-670.
The most detailed analysis of selenium status and prostate cancer risk in US black men is presented. Van den Brandt PA, Zeegers MPA, Bode P, Goldboh RA. Toenail selenium levels and the subsequent risk of prostate cancer: a prospective cohort study. Cancer Epidemiol Biomarker Prev 2003; 12: 866-871.
An inverse association is reported between toenail selenium concentration and risk for prostate cancer in the Netherlands. Cellular and Molecular Anticancer Mechanisms of Selenium--GeneralSamaha HS, Hamid R, El-Bayoumy K, Rao CV, Reddy BS. The role of apoptosis in the modulation of colon carcinogenesis by dietary fat and by the organoselenium compound 1,4-phenylenebis (methylene) selenocyanate. Cancer Epidemiol Biomarker Prev 1997; 6: 699-704.
The first in vivo evidence is presented that dietary selenium supplementation upregulates programmed cell death (apoptosis) within the colonic epithelium of rats. Ip C, Thompson HJ, Ganther HE. Selenium modulation of cell proliferation and cell cycle biomarkers in normal and premalignant cells of the rat mammary gland. Cancer Epidemiol Biomarker Prev 2000; 9: 49-54.
Different forms of selenium exert different effects on biomarkers of cell cycle and proliferation. Ip C, Thompson HJ, Zhu Z, Ganther HE. In vitro and in vivo studies of methylseleninic acid: evidence that a monomethylated selenium metabolite is critical for cancer chemoprevention. Cancer Res 2000; 60: 2882-2886.
Data supporting the hypothesis that low molecular weight forms of selenium may be responsible for the cancer preventive effects of selenium are presented. Yeo J, Cha S, Cho C, Kim S, Cho J, Baek W, Suh M, Kwon TK, Park J, Suh S. Se-methylselenocysteine induces apoptosis through caspase activation and bax cleavage mediated by calpain in SKOV-3 ovarian cancer cells. Cancer Letters 2002; 182: 83-92.
This in vitro study explores the mechanisms of selenium-induced apoptosis in human ovarian cancer cells. Seo YR, Kelley MR, Smith ML. Selenomethionine regulation of p53 by a ref1-dependent redox mechanism. Proc Natl Acacl Sci 2002; 99: 14548-14553.
Compelling evidence is presented that selenium significantly modulates the repair of DNA damage. Hu YJ, Diamond AM. Role of glutathione peroxidase-1 in breast cancer: loss of heterozygosity and allelic differences in the response to selenium. Cancer Res 2003; 63: 3347-3351.
GPX-1 polymorphisms might explain why different people respond differently to dietary selenium supplementation. Cellular and Molecular Mechanisms
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