Abstract
Rapid technology growth and its implementation in all spheres of the people’s lives dictates the necessity for thorough study of the influence of different chemicals on human's health. This study was devoted to elucidation of MGMT activity in the thymus and spleen tissues under the influence of xenobiotics: tryglycidyl ether of polyoxypropylenetriol (TEPPT) and propylene glycol (PG). In subacute experiment were uncovered alterations of the matured male rat’s spleen and thymus after the administration of 1/10 LD50 and 1/100 LD50 of TEPPT and PG. The changes of morphologiс data are determined in comparison to control data which shows reactivity of the spleen and thymus in response to the induced xenobiotic. The effect of TEPPT and PG on the tissue of the spleen and thymus is expressed in the suppression of MGMT activity also; the inhibitory effect of TEPPT is more pronounced.
References
Grob K. The European system for the control of the safety of food-contact materials needs restructuring: a review and outlook for discussion / K. Grob // Food Additives Contaminants Part A, Chemistry Analysis, Control, Exposure Risk Assessment. – 2017. – Sep.; vol. 34 (9). – P. 1643–1659.
Kreitinger J. M. Environmental immunology: lessons learned from exposure to a select panel of immunotoxicants / J. M. Kreitinger, C. A. Beamer, D. M. Shepherd // J. Immunol. – 2016. – Apr. 15; vol. 196 (8). – P. 3217–3225.
De Jong W. H. Screening of xenobiotics for direct immunotoxicity in an animal study / W. H. De Jong, H. Van Loveren // Methods. – 2007. – Jan; vol. 41 (1). – P. 3–8.
Szczepanska N. Recent advances in assessing xenobiotics migrating from packaging material – A review / N. Szczepanska, B. Kudlak, J. Namiesnik // Anal. Chim. Acta. – 2018. – Vol. 1023. – P. 1–21.
Jacinto F. V. MGMT hypermethylation: a prognostic foe, a predictive friend / F. V. Jacinto, M. Esteller. // DNA Repair (Amst.). – 2007. – № 6 (8). – P. 1155–1160.
Pattern of expression of genes linked to epigenetic silencing in human breast cancer / K. Munot, S. M. Bell, S. Lane [at al.] // Human Pathology. – 2006. – Vol. 37. – P. 989–999.
The modified human DNA repair enzyme O6-methylguanine-DNA methyltransferase is a negative regulator of estrogen receptor-mediated transcription upon alkylation DNA damage / K. C. Teo, H. K. Oh, R. B. Ali [at al.] // Mol. Cell. Biol. – 2001. – № 20. – P. 7105–7114.
Younis L. K. The prognostic value of E-cadherin expression in breast cancer / L. K. Younis, H. E. Sakka, I. Haque // Int. J. Health Sci. (Qassim). – 2007. – № 1. – P. 43–51.
Ochs K. Apoptosis induced by DNA damage O6-methylguanine Is Bcl-2 and caspase-9/3 regulated and Fas/caspase-8 Independent / K. Ochs, B. Kaina // Cancer Research. – 2000. – Vol. 60. – P. 5815–5824.
Sewald K., Assessment of immunotoxicity using precision-cut tissue slices // K Sewald, A. Braun // Xenobiotica. – 2013. – Jan.; vol. 43 (1). – P. 84–97.