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A silicone delivery system for producing binge and continuous ethanol intoxication in rats
Pharmacology, Biochemistry, and Behavior
|February 1, 1981
Summary
A novel silicone system delivers ethanol (ETOH) to rats, enabling binge or continuous administration. Binge ETOH reduced weight, while continuous ETOH increased it, mimicking alcoholic intake patterns.
Area of Science:
- Pharmacology
- Neuroscience
- Animal Models
Background:
- Ethanol (ETOH) administration in research often relies on oral intake, which can be confounded by taste preferences.
- Developing methods for controlled ETOH delivery is crucial for studying its physiological and behavioral effects.
Purpose of the Study:
- To describe a novel silicone delivery system for subcutaneous administration of large ethanol quantities in rats.
- To compare the effects of binge versus continuous ETOH administration on caloric intake and body weight.
Main Methods:
- Implantation of two silicone delivery system models: a thin-walled pillow for rapid release (binge ETOH) and a thicker pillow for continuous release.
- Administration of 95% ETOH (v/v) for 3 hours daily (binge) or 84% ETOH (v/v) daily (continuous).
- Comparison of caloric intake and body weight changes between ETOH-administered groups and controls.
Main Results:
- The system successfully delivered lethal quantities of ETOH within 5 days.
- Rats receiving binge ETOH showed reduced caloric intake and body weight.
- Rats receiving continuous ETOH gained weight despite similar total caloric intake to controls.
Conclusions:
- The silicone delivery system provides a viable method for administering ethanol in rats without gustatory stimulation.
- Different ETOH intake patterns (binge vs. continuous) significantly impact caloric intake and body weight regulation.
- This system can model ETOH intake patterns observed in human alcoholism.