Supplement to the journal
"Trace Elements in Medicine" (Moscow)
2021: 14-15

GUT MICROBIOME AND MACROELEMENTS METABOLISM IN FISH BODY AGAINST THE BACKGROUND OF MOLYBDENUM NANOPARTICLES IN AQUATIC ENVIRONMENT

E.P. Miroshnikova, A.E. Arinzhanov*, Y.V. Kilyakova

Orenburg State University

DOI: 10.19112/2413-6174-2021-S1-05 

ABSTRACT. The article presents the experimental data on the effect of MoO3 nanoparticles (concentration 0.2 mg/dm3) with 99.8% purity and 92 nm size, obtained by plasma chemical synthesis, on the macroelements exchange in fish body and on the taxonomy of Daniorerio microbiota. NP were added with fish feed in the lyosols form once in 2 days. The negative effect of NP on the macroelements depositing in fish body was established relative to control. The decreased level of macroelements (Ca, Mg, Na, P) concentration in fish body relative to control was revealed in the first weeks of exposure (up to 21 days), and the macroelements content was increased to control values on the 28th day. This study showed the nanoparticles effect on the change of Daniorerio gastrointestinal biodiversity. The species diversity of Daniorerio intestinal microflora was presented by 393 morphologically different bacterial varieties on the 7th day of the experiment, and 299 – on the 14th day.

KEYWORDS: nanoparticles, molybdenum, trace elements, microbiome, Daniorerio.