@article{691130e530004169b9b1afe5940f8bbf,
title = "Hippocampal synaptic dysfunction in the SOD1G93A mouse model of Amyotrophic Lateral Sclerosis: Reversal by adenosine A2AR blockade",
abstract = "Amyotrophic Lateral Sclerosis (ALS) mostly affects motor neurons, but non-motor neural and cognitive alterations have been reported in ALS mouse models and patients. Here, we evaluated if time-dependent biphasic changes in synaptic transmission and plasticity occur in hippocampal synapses of ALS SOD1G93A mice. Recordings were performed in hippocampal slices of SOD1G93A and age-matched WT mice, in the pre-symptomatic and symptomatic stages. We found an enhancement of pre-synaptic function and increased adenosine A2A receptor levels in the hippocampus of pre-symptomatic mice. In contrast, in symptomatic mice, there was an impairment of long-term potentiation (LTP) and a decrease in NMDA receptor-mediated synaptic currents, with A2AR levels also being increased. Chronic treatment with the A2AR antagonist KW-6002, rescued LTP and A2AR values. Altogether, these findings suggest an increase in synaptic function during the pre-symptomatic stage, followed by a decrease in synaptic plasticity in the symptomatic stage, which involves over-activation of A2AR from early disease stages.",
keywords = "A receptor, ALS, Hippocampus, KW-6002, Long-term potentiation (LTP), Neuronal plasticity, NMDA receptor",
author = "N. Rei and Rombo, {D. M.} and Ferreira, {M. F.} and Y. Baqi and M{\"u}ller, {C. E.} and Ribeiro, {J. A.} and Sebasti{\~a}o, {A. M.} and Vaz, {S. H.}",
note = "Funding Information: This research was supported by UID/BIM/50005/2019, project funded by Funda??o para a Ci?ncia e a Tecnologia (FCT)/Minist?rio da Ci?ncia, Tecnologia e Ensino Superior (MCTES) through Fundos do Or?amento de Estado, by PTDC/BTM-SAL/32147/2017 (FCT) and by a Twinning action (SynaNet) from the EU H2020 programme (project number: 692340). N.R. was in receipt of an FCT PhD fellowship (PD/BD/113463/2015). We would like to thank to Joana E. Coelho, PhD, and Lu?sa V. Lopes, PhD, from Instituto de Medicina Molecular Jo?o Lobo Antunes, for providing the A2AR KO mouse striatum sample. Funding Information: This research was supported by UID/BIM/50005/2019, project funded by Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT) / Minist{\'e}rio da Ci{\^e}ncia, Tecnologia e Ensino Superior (MCTES) through Fundos do Or{\c c}amento de Estado , by PTDC/BTM-SAL/32147/2017 (FCT) and by a Twinning action (SynaNet) from the EU H2020 programme (project number: 692340 ). N.R. was in receipt of an FCT PhD fellowship (PD/BD/113463/2015). Publisher Copyright: {\textcopyright} 2020 The Authors",
year = "2020",
month = jul,
doi = "10.1016/j.neuropharm.2020.108106",
language = "English",
volume = "171",
journal = "Neuropharmacology",
issn = "0028-3908",
publisher = "Elsevier Limited",
}