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Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP
Transient global amnesia, both persistent and transient, is a very common neuropsychiatric syndrome. Among animal models for amnesia and testing new drugs, the scopolamine test is the most widely used for transient global amnesia (TGA). This study examined the scopolamine-induced deficits in working...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532394/ https://www.ncbi.nlm.nih.gov/pubmed/37762702 http://dx.doi.org/10.3390/ijms241814399 |
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author | Belardo, Carmela Boccella, Serena Perrone, Michela Fusco, Antimo Morace, Andrea Maria Ricciardi, Federica Bonsale, Roozbe ELBini-Dhouib, Ines Guida, Francesca Luongo, Livio Bagetta, Giacinto Scuteri, Damiana Maione, Sabatino |
author_facet | Belardo, Carmela Boccella, Serena Perrone, Michela Fusco, Antimo Morace, Andrea Maria Ricciardi, Federica Bonsale, Roozbe ELBini-Dhouib, Ines Guida, Francesca Luongo, Livio Bagetta, Giacinto Scuteri, Damiana Maione, Sabatino |
author_sort | Belardo, Carmela |
collection | PubMed |
description | Transient global amnesia, both persistent and transient, is a very common neuropsychiatric syndrome. Among animal models for amnesia and testing new drugs, the scopolamine test is the most widely used for transient global amnesia (TGA). This study examined the scopolamine-induced deficits in working memory, discriminative memory, anxiety, and motor activity in the presence of intranasal PEA-OXA, a dual antagonist of presynaptic α2 and H3 receptors. Male C57BL/6 mice were treated with intraperitoneal scopolamine (1 mg/kg) with or without pre-treatment (15 min) or post-treatment (15 min) with intranasal PEA-OXA (10 mg/kg). It was seen that scopolamine induced deficits of discriminative and spatial memory and motor deficit. These changes were associated with a loss of synaptic plasticity in the hippocampal dentate gyrus: impaired LTP after lateral entorhinal cortex/perforant pathway tetanization. Furthermore, hippocampal Ach levels were increased while ChA-T expression was reduced following scopolamine administration. PEA-OXA either prevented or restored the scopolamine-induced cognitive deficits (discriminative and spatial memory). However, the same treatment did not affect the altered motor activity or anxiety-like behavior induced by scopolamine. Consistently, electrophysiological analysis showed LTP recovery in the DG of the hippocampus, while the Ach level and ChoA-T were normalized. This study confirms the neuroprotective and pro-cognitive activity of PEA-OXA (probably through an increase in the extracellular levels of biogenic amines) in improving transient memory disorders for which the available pharmacological tools are obsolete or inadequate and not directed on specific pathophysiological targets. |
format | Online Article Text |
id | pubmed-10532394 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-105323942023-09-28 Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP Belardo, Carmela Boccella, Serena Perrone, Michela Fusco, Antimo Morace, Andrea Maria Ricciardi, Federica Bonsale, Roozbe ELBini-Dhouib, Ines Guida, Francesca Luongo, Livio Bagetta, Giacinto Scuteri, Damiana Maione, Sabatino Int J Mol Sci Article Transient global amnesia, both persistent and transient, is a very common neuropsychiatric syndrome. Among animal models for amnesia and testing new drugs, the scopolamine test is the most widely used for transient global amnesia (TGA). This study examined the scopolamine-induced deficits in working memory, discriminative memory, anxiety, and motor activity in the presence of intranasal PEA-OXA, a dual antagonist of presynaptic α2 and H3 receptors. Male C57BL/6 mice were treated with intraperitoneal scopolamine (1 mg/kg) with or without pre-treatment (15 min) or post-treatment (15 min) with intranasal PEA-OXA (10 mg/kg). It was seen that scopolamine induced deficits of discriminative and spatial memory and motor deficit. These changes were associated with a loss of synaptic plasticity in the hippocampal dentate gyrus: impaired LTP after lateral entorhinal cortex/perforant pathway tetanization. Furthermore, hippocampal Ach levels were increased while ChA-T expression was reduced following scopolamine administration. PEA-OXA either prevented or restored the scopolamine-induced cognitive deficits (discriminative and spatial memory). However, the same treatment did not affect the altered motor activity or anxiety-like behavior induced by scopolamine. Consistently, electrophysiological analysis showed LTP recovery in the DG of the hippocampus, while the Ach level and ChoA-T were normalized. This study confirms the neuroprotective and pro-cognitive activity of PEA-OXA (probably through an increase in the extracellular levels of biogenic amines) in improving transient memory disorders for which the available pharmacological tools are obsolete or inadequate and not directed on specific pathophysiological targets. MDPI 2023-09-21 /pmc/articles/PMC10532394/ /pubmed/37762702 http://dx.doi.org/10.3390/ijms241814399 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Belardo, Carmela Boccella, Serena Perrone, Michela Fusco, Antimo Morace, Andrea Maria Ricciardi, Federica Bonsale, Roozbe ELBini-Dhouib, Ines Guida, Francesca Luongo, Livio Bagetta, Giacinto Scuteri, Damiana Maione, Sabatino Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title | Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title_full | Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title_fullStr | Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title_full_unstemmed | Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title_short | Scopolamine-Induced Memory Impairment in Mice: Effects of PEA-OXA on Memory Retrieval and Hippocampal LTP |
title_sort | scopolamine-induced memory impairment in mice: effects of pea-oxa on memory retrieval and hippocampal ltp |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532394/ https://www.ncbi.nlm.nih.gov/pubmed/37762702 http://dx.doi.org/10.3390/ijms241814399 |
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