Neuroscience 2005 Abstract
| Presentation Number: | 421.8 |
|---|---|
| Abstract Title: | δ-9-Tetrahydrocannabinol and cannabidiol, but not ondansetron, interfere with conditioned retching reactions elicited by a lithium-paired context in suncus murinus: an animal model of anticipatory nausea and vomiting (ANV). |
| Authors: |
Kwiatkowska, M.*1
; Parker, L. A.1
; Mechoulam, R.2
1Dept Psychology, Wilfrid Laurier Univ., Waterloo, Canada 2Israel, 75 Univ Ave West, N2L 3C5, |
| Primary Theme and Topics |
Cognition and Behavior - Motivation and Emotion -- Reward |
| Session: |
421. Reward: Alcohol, Cannaniboids, and Morphine Poster |
| Presentation Time: | Monday, November 14, 2005 11:00 AM-12:00 PM |
| Location: | Washington Convention Center - Hall A-C, Board # KK21 |
| Keywords: | cannabinoids, emesis, cancer, shrew |
Chemotherapy patients report not only acute nausea and vomiting during the treatment itself, but also report anticipatory nausea and vomiting upon re-exposure to the cues associated with the treatment. We present a model of anticipatory nausea based on the emetic reactions of the Suncus murinus (musk shrew). Following three pairings of a novel distinctive contextual cue with the emetic effects of an injection of lithium chloride, the context acquired the potential to elicit conditioned retching in the absence of the toxin. The expression of this conditioned retching reaction was completely suppressed by pretreatment with each of the principal cannabinoids found in marijuana, δ9-tetrahydrocannabinol or cannabidiol, at a dose that did not suppress general activity. On the other hand, pretreatment with a dose of ondansetron (a 5-HT3 antagonist) that interferes with acute vomiting in this species, did not suppress the expression of conditioned retching during re-exposure to the lithium-paired context. These results support anecdotal claims that marijuana, but not ondansetron, may suppress the expression of anticipatory nausea.
Supported by NSERC and CIHR
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2005 Neuroscience Meeting Planner. Washington, DC: Society for Neuroscience, 2005. Online.
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