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The lack of behavioral effects of fenbendazole: a medication for pinworm infection
Richard Keen1, Mika Macinnis, Paulo Guilhardi
1Converse College, Department of Psychology, Spartanburg, South Carolina 29302, USA.
Abstract:
Pinworm infection in rodent laboratories is common and often treated with fenbendazole, which is effective and has a low toxicity level. However, very little is known about the behavioral effects of the drug. The purpose of this study was to determine the behavioral effects of fenbendazole on rats tested by using various conditioning and timing procedures. These behavioral effects were examined both between animals (i.e., control versus medicated treatments) and within animals (baseline-treatment-baseline design). Fenbendazole reduced the detection of pinworm eggs, and it had no significant behavioral effects across multiple levels of analysis (e.g., from overall response rates to response patterns to interresponse intervals). All behavioral differences (e.g., discrimination ratios) were a result of task variables. These results suggest that behavioral studies are unlikely to be influenced by fenbendazole treatment given before or during a study.
Insights
Fenbendazole effectively treats pinworm infections in lab rats with no significant behavioral side effects. This suggests fenbendazole treatment is unlikely to impact rodent behavioral study results.
Area of Science:
- Veterinary Pharmacology
- Animal Behavior Science
- Laboratory Animal Science
Background:
- Pinworm infections are prevalent in laboratory rodents, necessitating effective treatments.
- Fenbendazole is a common antiparasitic drug used in research settings due to its efficacy and low toxicity.
- Limited data exists regarding the potential behavioral impacts of fenbendazole administration in rodents.
Purpose of the Study:
- To investigate the behavioral effects of fenbendazole in rats.
- To assess if fenbendazole influences behavior across various conditioning and timing paradigms.
- To determine the reliability of rodent behavioral studies when fenbendazole is administered.
Main Methods:
- Rats were subjected to multiple conditioning and timing procedures.
- Behavioral responses were analyzed using a within-subjects (baseline-treatment-baseline) and between-subjects (control vs. fenbendazole) design.
- Data collected included overall response rates, response patterns, and interresponse intervals.
Main Results:
- Fenbendazole treatment successfully reduced pinworm egg detection.
- No significant behavioral alterations were observed in rats treated with fenbendazole across different analytical levels.
- Observed behavioral differences were attributable to task variables, not drug effects.
Conclusions:
- Fenbendazole does not produce significant behavioral changes in rats.
- The use of fenbendazole in rodent research is unlikely to confound behavioral study outcomes.
- Behavioral research in rodents can proceed without concern for fenbendazole-induced behavioral modifications.

