Abstract
In recent years, silicon dioxide nanoparticles have been widely used in medicine and the pharmaceutical industry, however, their effect on the brain has hardly been studied. We assessed the effects of long-term consumption of 5-nm amorphous silicon dioxide nanoparticles (SiO2-NPs) by Syrian hamsters infected with the trematodes Opisthorchis felineus on the hippocampus and frontal cortex. Spectroscopic determination of brain neurometabolites, performed using a horizontal Magnetic Resonance Imaging system at 11.7 Tesla magnetic field, has shown that the ratio of the excitatory neurotransmitters (glutamate + glutamine + aspartate) to the inhibitory ones (GABA + glycine) was higher in the animals infected with O. felineus. However, pre-consumption of the SiO2-NPs solution prevented this imbalance. In addition, the protective effect of SiO2-NPs on the level of myo-inositol and glycine was found. It is concluded that the use of SiO2-NPs can neutralize the negative effects of infectious factors on the brain.
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Funding
The work was performed within the framework of the state assignment of the Federal Research Center Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences (no. 0324-2019-0041) and the state assignment of the Institute of the Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences (no. 0301-2019-0005). Work with the equipment of the Center for Genetic Resources of Laboratory Animals, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences was supported by the Ministry of Education and Science of the Russian Federation (unique project identifier RFMEFI62119X0023).
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Statement on the welfare of animals. All procedures were carried out in accordance with the directives of the European Communities Council of November 24, 1986 (86/609/EEC) and the conclusion of the Bioethical Commission of the Federal Research Center of ICG SB RAS (protocol No. 39 of September 27, 2017).
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Lvova, M.N., Shevelev, O.B., Serdobintseva, V.V. et al. Effect of Silicon Dioxide Nanoparticles on Syrian Hamsters Infected by Opisthorchis felineus: 1H MRS Study of the Brain. Dokl Biochem Biophys 495, 319–324 (2020). https://doi.org/10.1134/S1607672920060095
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DOI: https://doi.org/10.1134/S1607672920060095