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Protective effect of green tea against neuro‐functional alterations in rats treated with MnO 2 nanoparticles
Author(s) -
Sárközi Kitti,
Papp András,
Horváth Edina,
Máté Zsuzsanna,
Hermesz Edit,
Kozma Gábor,
Zomborszki Zoltán Péter,
Kálomista Ildikó,
Galbács Gábor,
Szabó Andrea
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7919
Subject(s) - neurotoxicity , oxidative stress , green tea extract , green tea , chemistry , toxicity , neuroprotection , manganese , nervous system , inhalation , medicine , pharmacology , toxicology , food science , biology , biochemistry , anesthesia , organic chemistry , psychiatry
BACKGROUND Inhalation of manganese‐containing metal fumes at workplaces can cause central nervous damage including a Parkinson‐like syndrome. Oxidative stress is likely to be involved in the pathomechanism, due to the presence of nano‐sized metal oxide particles with high biological and chemical activity. Oxidative damage of the nervous system could be prevented or ameliorated by properly applied antioxidants, preferably natural ones such as green tea, a popular drink. The aim of this work was to see if orally applied green tea brew could diminish the functional neurotoxicity of manganese dioxide nanoparticles introduced into the airways of rats. RESULTS Young adult male Wistar rats were treated intratracheally for 6 weeks with a suspension of synthetic MnO 2 nanoparticles (4 mg/kg body weight), and received green tea brew (1 g leaves 200 mL −1 water) as drinking fluid. Reduced body weight gain, indicating general toxicity of the nanoparticles, was not influenced by green tea. However, in rats receiving green tea the nervous system effects – changes in the spontaneous and evoked cortical activity and peripheral nerve action potential – were diminished. CONCLUSION The use of green tea as a neuroprotective functional drink seems to be a viable approach. © 2016 Society of Chemical Industry