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The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation

OBJECTIVE(S): Evidence shows that sleep deprivation (SD) disrupts the formation of hippocampus-related memories. Moreover, α2 adrenergic receptors that are wildly expressed in the CA1 hippocampal region have a significant role in modulating both sleep and memory formation. In the present research, w...

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Autores principales: Norozpour, Yaser, Nasehi, Mohammad, Sabouri-Khanghah, Vahid, Nami, Mohammad, Vaseghi, Salar, Zarrindast, Mohammad-Reza
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Mashhad University of Medical Sciences 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7811809/
https://www.ncbi.nlm.nih.gov/pubmed/33489031
http://dx.doi.org/10.22038/ijbms.2020.44891.10468
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author Norozpour, Yaser
Nasehi, Mohammad
Sabouri-Khanghah, Vahid
Nami, Mohammad
Vaseghi, Salar
Zarrindast, Mohammad-Reza
author_facet Norozpour, Yaser
Nasehi, Mohammad
Sabouri-Khanghah, Vahid
Nami, Mohammad
Vaseghi, Salar
Zarrindast, Mohammad-Reza
author_sort Norozpour, Yaser
collection PubMed
description OBJECTIVE(S): Evidence shows that sleep deprivation (SD) disrupts the formation of hippocampus-related memories. Moreover, α2 adrenergic receptors that are wildly expressed in the CA1 hippocampal region have a significant role in modulating both sleep and memory formation. In the present research, we wanted to investigate the effect of stimulation and blockage of CA1 α2 adrenergic receptors by clonidine (an agonist of α2 adrenergic receptor) and yohimbine (an antagonist of α2 adrenergic receptor), respectively, on memory retention impairment induced by REM SD (RSD) in rats. MATERIALS AND METHODS: Multiple platform apparatus were used to induce RSD, and the passive avoidance task was used to assess memory consolidation. Clonidine and yohimbine were injected intra-CA1. RESULTS: The results showed that RSD (for 24 and 36, but not 12 hr) decreased memory retention, with no effect on locomotion. Post-training intra-CA1 infusion of a subthreshold dose of yohimbine (0.001 μg/rat) did not alter, while clonidine (0.1 μg/rat) restored memory retention impairment induced by RSD (24 and 36 hr). Also, none of the interventions did not influence locomotor activity. CONCLUSION: Our data strongly showed that CA1 α2 adrenergic receptors have a critical role in RSD-induced memory retention impairment.
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spelling pubmed-78118092021-01-22 The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation Norozpour, Yaser Nasehi, Mohammad Sabouri-Khanghah, Vahid Nami, Mohammad Vaseghi, Salar Zarrindast, Mohammad-Reza Iran J Basic Med Sci Original Article OBJECTIVE(S): Evidence shows that sleep deprivation (SD) disrupts the formation of hippocampus-related memories. Moreover, α2 adrenergic receptors that are wildly expressed in the CA1 hippocampal region have a significant role in modulating both sleep and memory formation. In the present research, we wanted to investigate the effect of stimulation and blockage of CA1 α2 adrenergic receptors by clonidine (an agonist of α2 adrenergic receptor) and yohimbine (an antagonist of α2 adrenergic receptor), respectively, on memory retention impairment induced by REM SD (RSD) in rats. MATERIALS AND METHODS: Multiple platform apparatus were used to induce RSD, and the passive avoidance task was used to assess memory consolidation. Clonidine and yohimbine were injected intra-CA1. RESULTS: The results showed that RSD (for 24 and 36, but not 12 hr) decreased memory retention, with no effect on locomotion. Post-training intra-CA1 infusion of a subthreshold dose of yohimbine (0.001 μg/rat) did not alter, while clonidine (0.1 μg/rat) restored memory retention impairment induced by RSD (24 and 36 hr). Also, none of the interventions did not influence locomotor activity. CONCLUSION: Our data strongly showed that CA1 α2 adrenergic receptors have a critical role in RSD-induced memory retention impairment. Mashhad University of Medical Sciences 2020-12 /pmc/articles/PMC7811809/ /pubmed/33489031 http://dx.doi.org/10.22038/ijbms.2020.44891.10468 Text en This is an Open Access article distributed under the terms of the Creative Commons Attribution License, (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Norozpour, Yaser
Nasehi, Mohammad
Sabouri-Khanghah, Vahid
Nami, Mohammad
Vaseghi, Salar
Zarrindast, Mohammad-Reza
The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title_full The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title_fullStr The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title_full_unstemmed The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title_short The effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
title_sort effect of alpha-2 adrenergic receptors on memory retention deficit induced by rapid eye movement sleep deprivation
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7811809/
https://www.ncbi.nlm.nih.gov/pubmed/33489031
http://dx.doi.org/10.22038/ijbms.2020.44891.10468
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