Metabolic shift of the kynurenine pathway impairs alcohol and cocaine seeking and relapse
Rationale: The glutamatergic system plays a key role in the maintenance of drug use and development of drug-related conditioned behaviours. In particular, hyper-glutamatergic activity and N-methyl-D-aspartate receptor (NMDAR) activation may drive drug craving and relapse. Inhibition of kynurenine-3-...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
30 July 2016
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| In: |
Psychopharmacology
Year: 2016, Jahrgang: 233, Heft: 18, Pages: 3449-3459 |
| ISSN: | 1432-2072 |
| DOI: | 10.1007/s00213-016-4384-9 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s00213-016-4384-9 Verlag, Volltext: https://doi.org/10.1007/s00213-016-4384-9 
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| Verfasserangaben: | Valentina Vengeliene, Nazzareno Cannella, Tatiane Takahashi, Rainer Spanagel |
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| 245 | 1 | 0 | |a Metabolic shift of the kynurenine pathway impairs alcohol and cocaine seeking and relapse |c Valentina Vengeliene, Nazzareno Cannella, Tatiane Takahashi, Rainer Spanagel |
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| 520 | |a Rationale: The glutamatergic system plays a key role in the maintenance of drug use and development of drug-related conditioned behaviours. In particular, hyper-glutamatergic activity and N-methyl-D-aspartate receptor (NMDAR) activation may drive drug craving and relapse. Inhibition of kynurenine-3-monooxygenase (KMO) shifts the metabolic kynurenine pathway towards production of kynurenic acid, which leads to a reduction of glutamatergic/NMDAR activity via different mechanisms. Objectives: In this study, we investigated whether drug-seeking and relapse behaviour could be modified by the metabolic shift of endogenous kynurenine pathway. Methods: An inhibitor of kynurenine-3-monooxygenase (KMO) Ro61-8048 (4 and 40 mg/kg) and its prodrug JM6 (100 and 200 mg/kg) were tested in two behavioural rat models for drug seeking and relapse—the alcohol deprivation effect (ADE) model in long-term alcohol-drinking rats and the model of cue-induced reinstatement of alcohol- and cocaine-seeking behaviour. Results: Our results show that relapse-like alcohol drinking during the ADE was abolished by repeated intraperitoneal administration of Ro61-8048 and significantly reduced by its oral prodrug JM6. Cue-induced reinstatement of both alcohol- and cocaine-seeking behaviour was also abolished by administration of Ro61-8048. Conclusions: Pharmacological enhancement of endogenous kynurenic acid levels provides a novel treatment strategy to interfere with glutamatergic/NMDAR activity as well as with craving and relapse in alcohol-dependent patients and drug addicts. | ||
| 650 | 4 | |a Cocaine | |
| 650 | 4 | |a Craving | |
| 650 | 4 | |a Ethanol | |
| 650 | 4 | |a Kynurenic acid | |
| 650 | 4 | |a Kynurenine-3-monooxygenase | |
| 650 | 4 | |a Relapse | |
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