Inhibition by blueberries (bilberries) and extract from milk thistle of rat forestomach hyperplasia induced by oral smokeless tobacco (Swedish snus)
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Filipović, Jelena G.
Drakulić, Dunja R.
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The aim of this study was to identify palatable additives which have a significant protective action against soft tissue changes in the oral cavity caused by Swedish smokeless tobacco (snus), and that satisfy existing legal requirements. Although the cancer risk from snus is extremely low, long term use may result in highly undesirable keratotic lesions and associated epithelial abnormalities in the oral cavity. The rat forestomach, which is vulnerable to the irritative action of non-genotoxic compounds like butylated hydroxyanisole, propionic acid as well as snus, was chosen as an experimental model. Studied toxicological endpoints included histopathology and cellular proliferation based on DNA incorporation of bromodeoxyuridine. After 6 weeks exposure, blueberries (bilberries) and an extract from the common milk thistle were found to exert a highly significant inhibition of cell proliferation induced by snus in the rat forestomach epithelium, indicating a potential protection with re...spect soft tissue changes in the human oral cavity. (C) 2016 Elsevier Inc. All rights reserved.
Кључне речи:Smokeless tobacco / Snus / Forestomach / Hyperplasia / Bromodeoxyuridine / Phytoprotection / Blueberries / Silymarin / Milk thistle
Извор:Regulatory Toxicology and Pharmacology, 2016, 76, 94-101
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ISSN: 0273-2300 (print); 1096-0295 (electronic)