The ferret for non-rodent toxicity studies - a pathologist's view

Area of Science:

• Veterinary Toxicology
• Preclinical Drug Development

Background:

• Ferrets have been utilized in laboratory settings for drug toxicity studies over the past four years.
• Previous research involved 12 small-scale studies (14-28 days) with 6-8 ferrets each, typically males.
• A recent larger study involved 54 ferrets over a 90-day period.

Purpose of the Study:

• To assess the suitability of ferrets as an alternative non-rodent species for drug toxicity testing.
• To evaluate the ferret's response to oral non-steroidal anti-inflammatory drugs (NSAIDs) compared to dogs.
• To identify any limitations for routine toxicity testing based on ferret background pathology.

Main Methods:

• Conducted 12 small drug toxicity studies (14-28 days) and one larger study (90 days).
• Administered daily oral doses via gavage.
• Observed and documented gastric damage in response to NSAIDs.
• Reviewed background pathology in ferrets.

Main Results:

• Ferrets are amenable to daily gavage dosing.
• Ferrets exhibited gastric damage similar in type and degree to dogs when administered oral NSAIDs.
• Minor peculiarities in background pathology were noted but did not present significant limitations.
• No major issues were identified that would hinder routine toxicity testing.

Conclusions:

• Ferrets demonstrate suitability as an alternative non-rodent species for drug toxicity studies.
• The ferret's physiological response, particularly gastric effects from NSAIDs, parallels that of dogs.
• The species is viable for routine toxicity testing with consideration for minor background pathology.