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Fenfluramine-induced hyperthermia and stimulation in the rabbit
Research Communications in Chemical Pathology and Pharmacology
|March 1, 1976
Summary
Fenfluramine causes increased body temperature and stimulation in rabbits through serotonin receptors. These effects were blocked by specific antagonists, indicating a serotonergic mechanism.
Area of Science:
- Pharmacology
- Neuroscience
- Behavioral Science
Background:
- Fenfluramine is known to affect neurotransmitter systems.
- Understanding the precise mechanisms of fenfluramine's effects is crucial for its therapeutic applications and safety assessment.
Purpose of the Study:
- To investigate the role of serotonergic receptors in fenfluramine-induced hyperthermia and behavioral stimulation in rabbits.
- To identify potential antagonists for fenfluramine's physiological and behavioral effects.
Main Methods:
- Intravenous administration of fenfluramine to rabbits.
- Assessment of dose-related hyperthermia and behavioral stimulation.
- Evaluation of antagonist effects using cinanserin, cyproheptadine, fluxetine, methergoline, and haloperidol.
Main Results:
- Fenfluramine induced dose-dependent hyperthermia and stimulation in rabbits.
- Cinanserin, cyproheptadine, and fluxetine antagonized both fenfluramine effects.
- Methergoline blocked stimulation and partially inhibited hyperthermia; haloperidol was ineffective.
Conclusions:
- Fenfluramine-induced hyperthermia and stimulation in rabbits are mediated by an indirect action on serotonergic receptors.
- The findings support the involvement of the serotonin system in fenfluramine's central nervous system effects.