* Effects of nanoparticle zinc oxide on emotional behavior and trace elements homeostasis in rat brain.
- Over recent years, nanotoxicology and the potential effects on human body have grown in significance, the potential influences of nanosized materials on the central nervous system have received more attention. The aim of this study was to determine whether zinc oxide (ZnO) nanoparticles (NPs) exposure cause alterations in emotional behavior and trace elements homeostasis in rat brain. Rats were treated by intraperitoneal injection of ZnO NPs (20-30 nm) at a dose of 25 mg/kg body weight. Sub -: acute ZnO NPs treatment induced no significant increase in the zinc content in the homogenate brain. Statistically significant decreases in iron and calcium concentrations were found in rat brain tissue compared to control. However, sodium and potassium contents remained unchanged. Also, there were no significant changes in the body weight and the coefficient of brain. In the present study, the anxiety-related behavior was evaluated using the plus-maze test. ZnO NPs treatment modulates slightly the exploratory behaviors of rats. However, no significant differences were observed in the anxious index between ZnO NP-treated rats and the control group (p > 0.05). Interestingly, our results demonstrated minimal effects of ZnO NPs on emotional behavior of animals, but there was a possible alteration in trace elements homeostasis in rat brain.
=>一団にする, 集める, 分派, 集団, グループ, 分類する, 演奏家グループ, 集まる, 分ける
Overview of noun group
The noun group has 3 senses (first 2 from tagged texts)
1. (1345) group, grouping -- (any number of entities (members) considered as a unit)
2. (1) group, radical, chemical group -- ((chemistry) two or more atoms bound together as a single
unit and forming part of a molecule)
3. group, mathematical group -- (a set that is closed, associative, has an identity element and
every element has an inverse)
Overview of verb group
The verb group has 2 senses (first 2 from tagged texts)
1. (4) group -- (arrange into a group or groups; "Can you group these shapes together?")
2. (1) group, aggroup -- (form a group or group together)
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