ECO-TOXIC EFFICACY OF NANO-SIZED MAGNESIUM OXIDE IN FRESHWATER SNAIL RADIX LEUTEOLA L
This study aimed to estimate the ecotoxic
properties of magnesium oxide nanoparticles (MgO
nanoparticles), in freshwater pond snail Radix
leuteola L. (R. luteola). Before observations of
MgO nanoparticles toxic potential, average size and
shape of MgO nanoparticles was measured by
dynamic light scattering and field transmission
electron microscope. Exposure of MgO
nanoparticles encouraged an elevation in levels of
malondialdehyde, glutathione peroxidase and
coincidentally decreases in glutathione reduced
after 1 and 4 days, suggesting pro-oxidant effects of
the nanoparticles in R. luteola. Other anti-oxidant
enzyme, i.e., catalase and glutathione-s-transferase
were declined at 34 µg/ml of MgO nanoparticles
and increased at 51 µg/ml of MgO nanoparticles
during exposure periods. Single strand DNA
disintegration happened in R. luteola due to lethal
effect of MgO nanoparticles was confirmed by
comet test and exhibited in the form of olive tail
moment and per cent tail DNA. DNA damage and
enzyme increased more effectively at the higher
concentration of MgO nanoparticles at 4 days. This
approach provides crucial new information
regarding the unknown effects of MgO
nanoparticles in freshwater snail. The evaluation of
DNA integrity in R. luteola reveals quick indication
of pollution of the aquatic ecosystem by MgO
nanoparticles.
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