Related Experiment Videos
Ethanol induces rotational behavior in 6-hydroxydopamine lesioned mice
Life Sciences
|March 9, 1987
Summary
Ethanol induced contralateral rotation in mice with specific dopamine pathway damage, mimicking apomorphine effects. This surprising finding suggests complex interactions between ethanol and the nigrostriatal system.
Area of Science:
- Neuroscience
- Pharmacology
Background:
- Unilateral striatal lesions using 6-hydroxydopamine (6HDA) create animal models for studying dopamine-related motor control.
- Amphetamine and apomorphine are standard pharmacological tools to assess dopaminergic function and motor asymmetry in these models.
Purpose of the Study:
- To investigate the effects of ethanol on motor behavior in a mouse model of unilateral striatal dopamine depletion.
- To compare ethanol's rotational effects with those of known dopaminergic agents, amphetamine and apomorphine.
Main Methods:
- Mice underwent unilateral striatal 6-hydroxydopamine (6HDA) injections to induce dopamine depletion.
- Rotational behavior was assessed following administration of amphetamine and apomorphine.
- Selected mice exhibiting specific rotational patterns were then challenged with varying doses of ethanol (1-3 g/kg).
Main Results:
- Ethanol administration induced a dose-dependent contralateral rotation in the lesioned mice.
- This ethanol-induced rotation mimicked the apomorphine-like response.
- No significant correlation was observed between the degree of ethanol-induced rotation and the rotation induced by apomorphine or amphetamine.
Conclusions:
- Ethanol can elicit apomorphine-like contralateral rotation in a 6HDA-lesioned mouse model, indicating a specific effect on the nigrostriatal dopamine pathway.
- The findings suggest that ethanol's motor effects in this model are distinct from amphetamine's and may involve direct or indirect modulation of dopamine receptors or signaling.