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Updated: Jun 20, 2026
08:59
An Intestine/Liver Microphysiological System for Drug Pharmacokinetic and Toxicological Assessment
Published on: December 3, 2020
A combined and comparative study of physiologic and behavioral parameters in a systemic toxicity test
Andrew J Harkin1, James M O'Donnell, John P Kelly
1Department of Pharmacology, National University of Ireland, Galway, Ireland.
Contemporary Topics in Laboratory Animal Science
|September 18, 2009
Summary
Monitoring physiological parameters in rats, including body temperature and weight gain, helps assess clinical safety of materials. Weight gain proved most sensitive, but optimal testing depends on the substance
Area of Science:
- Toxicology and Pharmacology
- Biomedical Engineering
- Animal Models in Research
Background:
- Assessing clinical safety of materials requires understanding acute systemic effects on tissues and fluids.
- Bioradiotelemetry offers a method for monitoring physiological responses in freely behaving animals.
Purpose of the Study:
- To evaluate the utility of bioradiotelemetry for monitoring physiological parameters in rats exposed to toxic substances.
- To compare the sensitivity of physiological parameters (heart rate, body temperature, motor activity) and weight gain as indices of systemic toxicity.
Main Methods:
- Utilized bioradiotelemetry to record heart rate, body temperature, and motor activity in rats.
- Administered bacterial endotoxin lipopolysaccharide and nickel chloride to rats.
- Monitored weight gain, food, and water consumption in conjunction with physiological data.
Main Results:
- Body temperature changes were more sensitive than heart rate or motor activity.
- Weight gain was the most sensitive index overall.
- Optimal monitoring conditions (diurnal/nocturnal) depend on the substance's induced response (hyper/hypothermia).
Conclusions:
- Physiological monitoring provides complementary data for systemic response assessment.
- Weight gain remains a superior index, particularly when monitored nocturnally.
- Testing conditions must be tailored to the specific toxic substance and its induced systemic effects.
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