Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response

Parkinson’s disease (PD) is a prevalent movement disorder characterized by the progressive loss of dopaminergic neurons in substantia nigra pars compacta (SNpc). The 6-hydroxydopamine (6-OHDA) lesion is still one of the most widely used techniques for modeling Parkinson’s disease (PD) in rodents. De...

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Autores principales: Bárbara Mendes-Pinheiro, Carina Soares-Cunha, Ana Marote, Eduardo Loureiro-Campos, Jonas Campos, Sandra Barata-Antunes, Daniela Monteiro-Fernandes, Diogo Santos, Sara Duarte-Silva, Luísa Pinto, António José Salgado
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:5b7bfaea66c64604aa2a882f0e19aabe2021-11-11T16:59:37ZUnilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response10.3390/ijms2221115301422-00671661-6596https://doaj.org/article/5b7bfaea66c64604aa2a882f0e19aabe2021-10-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/21/11530https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067Parkinson’s disease (PD) is a prevalent movement disorder characterized by the progressive loss of dopaminergic neurons in substantia nigra pars compacta (SNpc). The 6-hydroxydopamine (6-OHDA) lesion is still one of the most widely used techniques for modeling Parkinson’s disease (PD) in rodents. Despite commonly used in rats, it can be challenging to reproduce a similar lesion in mice. Moreover, there is a lack of characterization of the extent of behavioral deficits and of the neuronal loss/neurotransmitter system in unilateral lesion mouse models. In this study, we present an extensive behavioral and histological characterization of a unilateral intrastriatal 6-OHDA mouse model. Our results indicate significant alterations in balance and fine motor coordination, voluntary locomotion, and in the asymmetry’s degree of forelimb use in 6-OHDA lesioned animals, accompanied by a decrease in self-care and motivational behavior, common features of depressive-like symptomatology. These results were accompanied by a decrease in tyrosine hydroxylase (TH)-labelling and dopamine levels within the nigrostriatal pathway. Additionally, we also identify a marked astrocytic reaction, as well as proliferative and reactive microglia in lesioned areas. These results confirm the use of unilateral intrastriatal 6-OHDA mice for the generation of a mild model of nigrostriatal degeneration and further evidences the recapitulation of key aspects of PD, thereby being suitable for future studies beholding new therapeutical interventions for this disease.Bárbara Mendes-PinheiroCarina Soares-CunhaAna MaroteEduardo Loureiro-CamposJonas CamposSandra Barata-AntunesDaniela Monteiro-FernandesDiogo SantosSara Duarte-SilvaLuísa PintoAntónio José SalgadoMDPI AGarticleParkinson’s disease6-OHDAunilateralstriatumdopaminergic degenerationmotor behaviorBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 11530, p 11530 (2021)
institution DOAJ
collection DOAJ
language EN
topic Parkinson’s disease
6-OHDA
unilateral
striatum
dopaminergic degeneration
motor behavior
Biology (General)
QH301-705.5
Chemistry
QD1-999
spellingShingle Parkinson’s disease
6-OHDA
unilateral
striatum
dopaminergic degeneration
motor behavior
Biology (General)
QH301-705.5
Chemistry
QD1-999
Bárbara Mendes-Pinheiro
Carina Soares-Cunha
Ana Marote
Eduardo Loureiro-Campos
Jonas Campos
Sandra Barata-Antunes
Daniela Monteiro-Fernandes
Diogo Santos
Sara Duarte-Silva
Luísa Pinto
António José Salgado
Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
description Parkinson’s disease (PD) is a prevalent movement disorder characterized by the progressive loss of dopaminergic neurons in substantia nigra pars compacta (SNpc). The 6-hydroxydopamine (6-OHDA) lesion is still one of the most widely used techniques for modeling Parkinson’s disease (PD) in rodents. Despite commonly used in rats, it can be challenging to reproduce a similar lesion in mice. Moreover, there is a lack of characterization of the extent of behavioral deficits and of the neuronal loss/neurotransmitter system in unilateral lesion mouse models. In this study, we present an extensive behavioral and histological characterization of a unilateral intrastriatal 6-OHDA mouse model. Our results indicate significant alterations in balance and fine motor coordination, voluntary locomotion, and in the asymmetry’s degree of forelimb use in 6-OHDA lesioned animals, accompanied by a decrease in self-care and motivational behavior, common features of depressive-like symptomatology. These results were accompanied by a decrease in tyrosine hydroxylase (TH)-labelling and dopamine levels within the nigrostriatal pathway. Additionally, we also identify a marked astrocytic reaction, as well as proliferative and reactive microglia in lesioned areas. These results confirm the use of unilateral intrastriatal 6-OHDA mice for the generation of a mild model of nigrostriatal degeneration and further evidences the recapitulation of key aspects of PD, thereby being suitable for future studies beholding new therapeutical interventions for this disease.
format article
author Bárbara Mendes-Pinheiro
Carina Soares-Cunha
Ana Marote
Eduardo Loureiro-Campos
Jonas Campos
Sandra Barata-Antunes
Daniela Monteiro-Fernandes
Diogo Santos
Sara Duarte-Silva
Luísa Pinto
António José Salgado
author_facet Bárbara Mendes-Pinheiro
Carina Soares-Cunha
Ana Marote
Eduardo Loureiro-Campos
Jonas Campos
Sandra Barata-Antunes
Daniela Monteiro-Fernandes
Diogo Santos
Sara Duarte-Silva
Luísa Pinto
António José Salgado
author_sort Bárbara Mendes-Pinheiro
title Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
title_short Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
title_full Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
title_fullStr Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
title_full_unstemmed Unilateral Intrastriatal 6-Hydroxydopamine Lesion in Mice: A Closer Look into Non-Motor Phenotype and Glial Response
title_sort unilateral intrastriatal 6-hydroxydopamine lesion in mice: a closer look into non-motor phenotype and glial response
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/5b7bfaea66c64604aa2a882f0e19aabe
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