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Neuropeptides. 2005 Jun;39(3):299-304.

Behavioural characterisation of transgenic mice overexpressing galanin under the PDGF-B promoter.

Author information

1
Department of Neuroscience, Karolinska Institutet, Division of Behavioral Neuroscience, Retzius väg 8, S-171 77 Stockholm, Sweden.

Abstract

The behavioural phenotype of transgenic mice (3-5-months old) overexpressing galanin (GalOE mice) under the platelet-derived growth factor B (PDGF-B) promoter was evaluated in a battery of tests, including locomotor cages, light-dark exploration test, elevated plus-maze and the Porsolt forced swim test. Learning and memory were assessed in the Morris water maze task. GalOE mice showed a slight increase in spontaneous locomotor activity assessed in the locomotor cages, but the amphetamine-induced increase in locomotor activity was somewhat lower in GalOE mice. Anxiety-like behaviour in light-dark exploration and elevated plus-maze tests did not differ between genotypes. In the Porsolt forced swim test, GalOE mice displayed an increased time of immobility, indicative of increased learned helplessness possibly reflecting increased stress-susceptibility and/or depression-like behaviour. GalOE mice showed normal learning and memory retention in the Morris water maze tasks. These data support the hypothesis that galanin may have a role in functions related to mood states, including affective disorders.

PMID:
15944026
DOI:
10.1016/j.npep.2005.01.004
[Indexed for MEDLINE]

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