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oai:riuma.uma.es:10630/105542026-02-03T11:26:09Zcom_10630_2254col_10630_37953

Flores-Burgess, Antonio Millón-Peñuela, Carmelo Narváez-Peláez, Manuel Santín-Núñez, Luis Javier Narváez-Bueno, José Ángel Díaz-Cabiale, Zaida 2015-10-21T10:34:41Z 2015-10-21T10:34:41Z 2015-10-21 http://hdl.handle.net/10630/10554 http://orcid.org/0000-0003-4613-9430 Galanin N-terminal fragment (1-15) [Gal(1-15)] is involved in mood regulation. The intracerebroventricular (icv) administration of Gal(1-15) produces a depressive-like behaviour in the forced swim test (FST) and an anxiety-like behaviour in the open field test (OF) in rats. In this work we analyze the effect of Gal(1-15) in two more behavioural tests, the tail suspension test (TLT) and the light/dark test. Gal(1-15) (3nmol), effective dose in FST and OF, or artificial cerebrospinal were injected in animals (n=5-8) 15 minutes before the test. Behavioural assessment were conducted with at least one week between tests. Student’s t-test was used for comparision between experimental groups. In the light/dark test we analyzed during 5 min three parametres as indicators of anxiety-like behaviour. Gal(1-15) significantly reduced the time spent in the light compartiment by 52% (p<0.05) and the latency time for entering the dark box by 65% (p<0.05). An increased in the latency time for re-entering the light box was also observed (p<0.05). In the TST, total immobility time was analyzed during 6 min test as parameter indicator of depressive-like behaviour. Gal(1-15) significantly increased rat immobility by 16% (p<0.05). Our results describe that Gal(1-15) exerts strong depressive- and anxiety-like effects in these tests, indicating a potential role of Gal(1-15) in mood disorders. These results may give the basis for the development of novel therapeutic drugs targeting Gal(1-15) for depression and anxiety. eng open access by-nc-nd Neuropétidos Effects of galanin n-terminal fragment (1-15) in the light/dark and tail suspension tests journal article