Journal
BEHAVIORAL NEUROSCIENCE
Volume 117, Issue 3, Pages 641-649Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7044.117.3.641
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- NIAAA NIH HHS [P60 AA010760] Funding Source: Medline
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The relationship between the effects of the N-methyl-D-aspartate (NMDA) antagonist MK-801 on acute responses to ethanol and its ability to block ethanol sensitization and tolerance was examined in DBA/2J mice. Cross-sensitization between these drugs was also studied. Repeated administration of 0.1 mg/kg MK-801 with ethanol potentiated, whereas 0.25 mg/kg attenuated, sensitization to ethanol's locomotor stimulant effects; rearing was similarly affected. There was evidence for cross-sensitization between ethanol and 0.25 mg/kg MK-801. MK-801 potentiated ethanol's ataxic effects in the grid test, but had no effect on tolerance to this effect. MK-801's effects on ethanol sensitization appeared to be related to its own behavioral effects, rather than NMDA receptor blockade per se. Further, these studies demonstrate dissociation between ethanol sensitization and tolerance.
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