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Alcohol withdrawal reactions in rhesus monkeys
Advances in Experimental Medicine and Biology
|January 1, 1977
Summary
Ethanol withdrawal severity in rhesus monkeys was measured using tremor and behavior. Fluctuating blood ethanol concentrations (BEC) led to less severe withdrawal than constant BEC.
Area of Science:
- Neuroscience
- Pharmacology
- Primate Research
Background:
- Ethanol withdrawal syndrome (EWS) is a significant clinical concern.
- Understanding factors influencing EWS severity is crucial for effective treatment.
- Rhesus monkeys are a relevant model for studying human alcohol withdrawal.
Purpose of the Study:
- To investigate the impact of constant versus fluctuating blood ethanol concentrations (BEC) on ethanol withdrawal reactions.
- To assess the relationship between specific BEC levels and withdrawal symptoms.
- To compare the severity of withdrawal under different ethanol exposure patterns.
Main Methods:
- Rhesus monkeys were exposed to ethanol for 96 hours under constant or fluctuating BEC conditions.
- Withdrawal reactions were measured using physiological tremor and a behavioral checklist.
- Blood ethanol concentrations (BEC) ranged from 50 to 300 mg/dl.
Main Results:
- Tremor frequency showed a significant curvilinear relationship with time during withdrawal, independent of specific BEC.
- Behavioral checklist scores demonstrated a clear dose-response relationship with BEC.
- Systematically fluctuating BEC resulted in less severe withdrawal symptoms compared to constant BEC.
Conclusions:
- BEC levels do not reliably predict tremor frequency during withdrawal.
- Behavioral assessments effectively capture dose-dependent withdrawal responses.
- Fluctuating ethanol exposure may mitigate the severity of ethanol withdrawal syndrome.
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