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GAL 3 receptor knockout mice exhibit an alcohol-preferring phenotype
- Source :
- Addiction Biology. 24:886-897
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- Galanin is a neuropeptide which mediates its effects via three G-protein coupled receptors (GAL1-3 ). Administration of a GAL3 antagonist reduces alcohol self-administration in animal models while allelic variation in the GAL3 gene has been associated with an increased risk of alcohol use disorders in diverse human populations. Based on the association of GAL3 with alcoholism, we sought to characterize drug-seeking behavior in GAL3 -deficient mice for the first time. In the two-bottle free choice paradigm, GAL3 -KO mice consistently showed a significantly increased preference for ethanol over water when compared to wildtype littermates. Furthermore, male GAL3 -KO mice displayed significantly increased responding for ethanol under operant conditions. These differences in alcohol seeking behavior in GAL3 -KO mice did not result from altered ethanol metabolism. In contrast to ethanol, GAL3 -KO mice exhibited similar preference for saccharin and sucrose over water, and a similar preference for a high fat diet over a low fat diet as wildtype littermates. No differences in cognitive and locomotor behaviors were observed in GAL3 -KO mice to account for increased alcohol seeking behavior. Overall, these findings suggest genetic ablation of GAL3 in mice increases alcohol consumption.
- Subjects :
- Pharmacology
medicine.medical_specialty
Ethanol
Medicine (miscellaneous)
Galanin receptor
Biology
030227 psychiatry
03 medical and health sciences
Psychiatry and Mental health
chemistry.chemical_compound
0302 clinical medicine
Endocrinology
chemistry
Internal medicine
Knockout mouse
medicine
Galanin
Ethanol metabolism
Self-administration
Saccharin
Galanin receptor 3
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 13556215
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Addiction Biology
- Accession number :
- edsair.doi...........1a700299b43dece350f7d8f19b90bff7