Icularly large differences in the amount of the investigated elements in tumors as compared with

Icularly large differences in the amount of the investigated elements in tumors as compared with their content in normal tissue. In addition, the supplementation with zinc + resveratrol significantly increased the rate of appearanceBobrowska-Korczak et al. Journal of Biomedical Science 2012, 19:43 http://www.jbiomedsci.com/content/19/1/Page 8 ofof the first tumors that could be felt by palpation as well as their multiplicity, which is indicative of accelerated oncogenesis. Perhaps a given phytoestrogen can have opposing effects on mammary cancer risk, depending on the time of exposure. The exact mechanism is not known, especially as each of the examined compounds is rather considered to be an ally in the fight against cancer. However, the presented results make us wonder if the diet supplementation with several antioxidants at the same time is likely to afford the expected result of inhibiting the risk of carcinogenesis, especially in children and young people before pubescence.Abbreviations AP-1: Activator protein 1; Ca: Calcium; COX 2: Cyclooxygenase-2; Cu: Copper; DMBA: 7,12-dimethylbenz[a]anthracene; EGF: Epidermal growth factor; ER: Estrogen receptor; Fe: Iron; ICP OES: Inductively coupled plasma optical emission spectrometry; IL-1: Interleukin 1; i.e, that is; Mg: Magnesium; MCF-7: Human breast adenocarcinoma cell line; MNU: N-methyl-N-nitrosourea; NFBI: Nuclear factor kappa B; PgR: Progesterone receptor; ROS: reactive oxygen species; RSD: Relative standard deviation; TM: Tetrathiomolybdate; TNF: tumor necrosis factor; VEGF: Vascular endothelial growth factor; Zn: Zinc. Acknowledgements This work was supported by the Ministry of Science and Higher Education grant NN405 358339. Authors’ contributions BB planned, designed and carried out the experiment. DS planned, designed and carried out the experiment, AT coordinated the study. All authors read and approved the final manuscript. Competing interests The authors declare that they have no competing interests. Received: 1 January 2012 Accepted: 16 April 2012 Published: 16 April 2012 SIS3 site References 1. Bhuloka Reddy S, Charles MJ, Naga Raju GJ, SeetharamI Reddy B, Seshi Reddy T, Rama Lakshmi PVB, Vijayan V: Trace Elemental Analysis of Cancer – afflicted Intestine by PIXE Technique. Biol Trace Elem Res 2004, 102:265-281. 2. Wolf FI, Maier JAM, Nasulewicz A, Feillet-Coudray C, Simonacci M, Mazur A, Cittadini A: Magnesium and neoplasia: from carcinogenesis to tumor growth and progression or treatment. Arch Biochem Biophys 2007, 458(1):24-32. 3. Franklin RB, Costello LC: Zinc as an anti-tumor agent in prostate cancer and in other cancers. Arch Biochem Biophys 2007, 463:211-217. 4. Donaldson MS: Nutrition and cancer: a review of the evidence for an PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/27532042 anti-cancer diet. Nutr J 2004, 3:19. 5. Huang X: Iron overload and its association with cancer risk in humans: evidence for iron as a carcinogenic metal. Mutat Res 2003, 533:153-171. 6. Gupte A, Mumper RJ: Elevated copper and oxidative stress in cancer cells as a target for cancer treatment. Cancer Treat Rev 2009, 35:32-46. 7. Nasulewicz A, Mazur A, Opolski A: Role of copper in tumor angiogenesis clinical implications. J Trace Elem Med Biol 2004, 18(1):1-8. 8. Zowczak M, Iskra M, Paszkowski J, Maczak M, Torliski L, Wysocka E: Oxidase activity of ceruloplasmin and concentrations of copper and zinc in serum of cancer patients. J Trace Elem Med Biol 2001, 15:193-196. 9. Summer KH, Lichtmannegger J, Bandow N, Choi DW: The biogenic methanobactin is an eff.