Triethyltin-produced decrease and recovery of wheel running and food-reinforced lever pressing in rats

Area of Science:

• Neuroscience
• Toxicology
• Behavioral Science

Background:

• Triethyltin (TET) is a known neurotoxicant.
• Assessing neurotoxicity often requires complex and expensive methods.
• Behavioral changes can indicate neurological damage.

Purpose of the Study:

• To investigate the behavioral effects of triethyltin in rats.
• To evaluate the potential of automated behavioral monitoring for neurotoxicity assessment.
• To correlate behavioral changes with neurotoxic lesions.

Main Methods:

• Four rats were housed in activity cages and monitored for wheel running, food-reinforced lever pressing, and water consumption.
• Triethyltin (4 mg/kg IP) was administered weekly.
• Behavioral data were recorded continuously.
• Correlation with neurological lesions was assessed.

Main Results:

• Acute triethyltin injections caused transient decreases in running, lever pressing, and water consumption.
• These behaviors recovered within 1-2 days after acute exposure.
• After repeated weekly injections, wheel running showed varied effects (reduction in 2 rats, increase in 1), while lever pressing remained at baseline.
• A correlation was observed between behavioral changes and neurotoxic lesions.

Conclusions:

• Automated monitoring of wheel running, lever pressing, and water consumption can detect behavioral neurotoxicity.
• This method may provide an inexpensive approach for neurotoxicity screening.
• Further validation with other neurotoxic compounds is warranted.