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Effect of dithiocarbamate-type chemicals on the nervous system of rats
Abstract:
Neurotoxic effect of some dithiocarbamate- and thiuram-disulphide-type chemicals as well as CS2 were examined on rat brain and behaviour. A significant reduction of the orientation hypermotility and at the same time a depression of the subcortical EEG activity were observed. The biochemical assay showed a decreased re-formation of norepinephrine. It is suggested that the inhibition of DBH enzyme may be involved in the delayed psychosedative effect, but not in the short-term electrophysiological changes.
Insights
Certain dithiocarbamate and thiuram chemicals, along with carbon disulfide (CS2), caused neurotoxicity in rats. These substances reduced motor activity and brainwave activity, potentially by inhibiting norepinephrine reformation.
Area of Science:
- Neuroscience
- Toxicology
- Biochemistry
Background:
- Dithiocarbamate and thiuram-disulphide compounds are industrial chemicals.
- Carbon disulfide (CS2) is a widely used industrial solvent.
- Neurotoxic effects of these chemicals require further investigation.
Purpose of the Study:
- To investigate the neurotoxic effects of specific dithiocarbamate, thiuram-disulphide chemicals, and carbon disulfide (CS2) on rat brain and behavior.
- To explore the underlying biochemical mechanisms of observed neurotoxicity.
Main Methods:
- Behavioral analysis of rats, including orientation and motility.
- Electrophysiological recordings of subcortical electroencephalogram (EEG) activity.
- Biochemical assays to measure neurotransmitter reformation, specifically norepinephrine.
Main Results:
- A significant reduction in orientation and hypermotility was observed in exposed rats.
- Depression of subcortical EEG activity indicated central nervous system impact.
- Biochemical assays revealed a decreased reformation of norepinephrine.
Conclusions:
- The studied chemicals induce neurotoxic effects, manifesting as behavioral and electrophysiological changes.
- Inhibition of dopamine beta-hydroxylase (DBH) enzyme is suggested to be involved in the delayed psychosedative effects.
- DBH enzyme inhibition is not implicated in the immediate electrophysiological changes observed.