RT Journal Article
T1 Galanin N-terminal fragment (1−15) reduces alcohol seeking and alcohol relapse in rats: Involvement of mesocorticolimbic system
A1 Cantero-García, Noelia
A1 Flores-Burgess, Antonio
A1 Pineda-Gómez, Juan Pedro
A1 Orio, Laura
A1 Serrano, Antonia
A1 Díaz-Cabiale, Zaida
A1 Millón-Peñuela, Carmelo
K1 Alcohol
AB Alcohol Use Disorder (AUD) is among the most prevalent mental illnesses, and due to the low efficacy of the current medication, it is essential to find new biological targets that could modulate alcohol consumption. Since Galanin (1−15) [GAL(1−15)] produces a loss of motivational behaviour by an artificial reinforcer and decreases the preference an alcohol consumption in a voluntary alcohol intake, we have studied the role of GAL(1−15) in alcohol-seeking behaviour and the involvement of the corticomesolimbic system as well as the role of GAL(1−15) in context-induced alcohol relapse. In rats, we have studied GAL(1−15)-effects on alcohol-seeking in self-administration, in fixed-ratio (FR1) and progressive-ratio (PR), and the involvement of GAL receptors using siRNA GALR1 or GALR2 knockdown animals. We have analysed the transcriptional changes of C-Fos, dopamine receptors, GAL receptors and 5HT1A receptors in the corticomesolimbic system. Also, we have examined the effect of GAL(1−15) in context-induced alcohol relapse. GAL(1−15) substantially reduced alcohol-seeking behaviour in the operant self-administration model in an FR1 protocol and at the breaking point in a PR schedule. GALR1and GALR2 were involved in these effects, as indicated by the analysis by GALR2 antagonist and GALR1 and GALR2 knockdown animals. Notably, the mechanism of GAL(1−15)-mediated actions involved changes in C-Fos, Dopamine receptors and 5HT1A expression in the ventral tegmental area, accumbens nucleus and prefrontal cortex. Significantly, GAL(1−15) reduced the context-induced alcohol relapse. These results open up the possibility to use GAL(1−15) as a novel strategy in AUD.
PB Elsevier
YR 2022
FD 2022-09
LK https://hdl.handle.net/10630/24898
UL https://hdl.handle.net/10630/24898
LA eng
NO Noelia Cantero-García, Antonio Flores-Burgess, Juan Pedro Pineda-Gómez, Laura Orio, Antonia Serrano, Zaida Díaz-Cabiale, Carmelo Millón, Galanin N-terminal fragment (1−15) reduces alcohol seeking and alcohol relapse in rats: Involvement of mesocorticolimbic system, Biomedicine & Pharmacotherapy, Volume 153, 2022, 113508, ISSN 0753-3322, https://doi.org/10.1016/j.biopha.2022.113508
NO This work was supported by grants awarded by Spanish Ministry of Economy PID2020-114392RB-100, PDC2021-121566-100 and by Junta de Andalucía P20-00026-R and PI-0083-2019. Partial funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026