Evaluation of fatty acid amide hydrolase inhibition in murine models of emotionality
| Autor: | Benjamin F. Cravatt, Kyunghye Ahn, Billy R. Martin, S. A. Varvel, Pattipati S. Naidu, Aron H. Lichtman |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Polyunsaturated Alkamides
Pyridines medicine.drug_class medicine.medical_treatment Emotions Arachidonic Acids Anxiety Anxiolytic Amidohydrolases Amidase Mice chemistry.chemical_compound Fatty acid amide hydrolase Cannabinoid Receptor Modulators medicine Animals Enzyme Inhibitors Maze Learning Lighting Mice Knockout Pharmacology chemistry.chemical_classification Behavior Animal Dose-Response Relationship Drug Depression Anandamide URB597 Endocannabinoid system Disease Models Animal Enzyme nervous system chemistry Biochemistry Benzamides lipids (amino acids peptides and proteins) Carbamates Cannabinoid psychological phenomena and processes Endocannabinoids Signal Transduction |
| Zdroj: | Psychopharmacology. 192:61-70 |
| ISSN: | 1432-2072 0033-3158 |
| Popis: | Manipulations of the endocannabinoid/fatty acid amide hydrolase (FAAH) signaling systems result in conflicting and paradoxical effects in rodent models of emotional reactivity.In the present study, we tested the hypothesis that the inhibition of FAAH would elicit significant effects in murine models used to screen anxiolytic and antidepressant drugs.FAAH (-/-) mice and wild-type mice treated with FAAH inhibitors (URB597 and OL-135) were evaluated in standard behavioral screening models for antidepressant (i.e., tail suspension and forced-swim tests) and anxiolytic (i.e., elevated plus maze) agents. The doses of URB597 and OL-135 selected were based on their ability to augment the pharmacological effects (i.e., analgesia, catalepsy, and hypothermia) of exogenously administered anandamide.FAAH (-/-) mice, anandamide-injected FAAH (-/-) mice, or wild-type mice injected with FAAH inhibitors or anandamide failed to exhibit significant effects in standard tests of emotional reactivity, although the antidepressant desipramine and the anxiolytic agent midazolam were active in the appropriate assays. FAAH- (-/-) and URB597-treated mice finally displayed significant effects in the tail suspension test when substantial methodological changes were made (i.e., altered ambient light and increased sample sizes).Although FAAH suppression can elicit significant effects under some instances in which consequential procedural modifications are made, the present results indicate that the pharmacological inhibition or genetic deletion of FAAH is ineffective in standard mouse models of emotional reactivity. It remains to be established whether the effects of FAAH inhibition in these modified tasks are predictive of their efficacy in treating emotional disorders. |
| Databáze: | OpenAIRE |
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