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https://hdl.handle.net/1822/61412
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Campo DC | Valor | Idioma |
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dc.contributor.author | Alonso, Isabel | por |
dc.contributor.author | Marques, Joana M. | por |
dc.contributor.author | Sousa, Nuno | por |
dc.contributor.author | Sequeiros, Jorge | por |
dc.contributor.author | Olsson, I. Anna S. | por |
dc.contributor.author | Silveira, Isabel | por |
dc.date.accessioned | 2019-09-17T10:48:15Z | - |
dc.date.available | 2019-09-17T10:48:15Z | - |
dc.date.issued | 2008-11 | - |
dc.identifier.issn | 0197-4580 | por |
dc.identifier.uri | https://hdl.handle.net/1822/61412 | - |
dc.description | Supplementary data associated with this article can be found, in the online version, at doi:10.1016/j.neurobiolaging. | por |
dc.description.abstract | The leaner mutation in mice affects the Ca(v)2.1 voltage-gated calcium channel alpha(1A)-subunit gene (Cacna1a), causing a reduction in calcium currents predominantly in Purkinje cells. This reduction in calcium currents causes severe progressive cerebellar ataxia, beginning around postnatal day 10, in homozygous leaner mice (tg(la)/tg(la)), while their heterozygous littermates (tg(la)/+) present no obvious behavioral deficits. In humans, heterozygous mutations in the Cacna1a orthologous gene produce a broad range of neurological manifestations. To evaluate the phenotypic status of the tg(la)/+ animals, we assessed motor performance and cognition, at different ages, in these mutant mice. We were able to observe age-dependent impairment in motor and cognitive tasks; balance and motor learning deficits were found in demanding tasks on the rotarod and on the hanging wire test, while spatial learning and memory impairment was observed in the Morris water maze. Progressive dysfunction in escape reflexes, indicative of neurological impairment, was also present in tg(la)/+ animals. Although not presenting major motor alterations, tg(la)/+ mice show age-dependent motor and cognitive deficits. | por |
dc.description.sponsorship | We would like to thank Carolina Lemos for her help with statistical analysis and Victor Mendes for image technical assistance. This work was supported by research grants POCTI/MGI/34517/00, POCTI/NSE/45352/2002 and POCI/SAU-MMO/56387/2004, FCT (Fundação para a Ciência e Tecnologia) and co-funded by FEDER. I.A. is recipient of a scholarship from FCT, Portugal. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | POCTI/MGI/34517/00 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/POCI/45352/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/POCI/56387/PT | por |
dc.rights | openAccess | por |
dc.subject | Animals | por |
dc.subject | Calcium Channels, N-Type | por |
dc.subject | Cognition Disorders | por |
dc.subject | Mice | por |
dc.subject | Mice, Inbred C57BL | por |
dc.subject | Movement Disorders | por |
dc.subject | Mutation | por |
dc.subject | Aging | por |
dc.subject | Learning | por |
dc.subject | rotarod test | por |
dc.subject | water maze test | por |
dc.subject | natural mutant | por |
dc.subject | calcium currents | por |
dc.subject | memory | por |
dc.title | Motor and cognitive deficits in the heterozygous leaner mouse, a Cav2.1 voltage-gated Ca2+ channel mutant | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 1733 | por |
oaire.citationEndPage | 1743 | por |
oaire.citationIssue | 11 | por |
oaire.citationVolume | 29 | por |
dc.identifier.doi | 10.1016/j.neurobiolaging.2007.04.005 | por |
dc.identifier.pmid | 17513018 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Neurobiology of Aging | por |
Aparece nas coleções: | ICVS - Artigos em revistas internacionais / Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0197458007001662-main.pdf | 344 kB | Adobe PDF | Ver/Abrir |