Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal
Ano de defesa: | 2011 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Medicina e Ci?ncias da Sa?de
|
Departamento: |
Faculdade de Medicina
|
País: |
BR
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede2.pucrs.br/tede2/handle/tede/1653 |
Resumo: | Aim: To investigate the correlation between neuronal electrical activity (viability) in human hippocampal slices in vitro and post-operative memory performance of patients submitted to epilepsy surgery due to temporal mesial sclerosis.Methods: The sample comprised 64 patients with temporal lobe epilepsy refractory to drug treatment submitted to selective amygdalohippocampectomy. We compared patients who had hippocampal slices generating electrical activity (viable) with those whose results did not show electrophysiological findings in vitro (non-viable). Memory performance was assessed through the Wechsler Memory Scale Revised (WMS-R). The variables investigated were immediate verbal memory, delayed verbal memory, immediate visual memory and delayed visual memory in the pre- and post-operative periods.Results: There was a statistically significant improvement in the group with hippocampal slices without electrical activity (non-viable), mainly as regards delayed verbal memory (p=0.012). In immediate and delayed visual memory there was an important improvement as well in the non-viable group, yet statistically insignificant. In the viable group only delayed verbal memory was enhanced, with a slight positive effect after withdrawal of the hippocampus. The most important difference between the groups was found in right hemisphere resections, where the results were not significant for delayed verbal memory in the viable group and there was a significant improvement of this variable in the non-viable group. In left hemisphere resections there was improved performance of delayed verbal memory in both groups.Conclusion: The non-viable group correlated better with post-operative memory performance, i.e. patients where hippocampal slices without electrical activity were resected had good memory outcomes after surgery. |
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Portuguez, Mirna WettersCPF:38932946000http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765068Y6CPF:94947554053http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4735244T9Azambuja, Luciana Schermann2015-04-14T13:35:21Z2012-01-202011-08-29AZAMBUJA, Luciana Schermann. Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal. 2011. 95 f. Tese (Doutorado em Medicina e Ci?ncias da Sa?de) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2011.http://tede2.pucrs.br/tede2/handle/tede/1653Aim: To investigate the correlation between neuronal electrical activity (viability) in human hippocampal slices in vitro and post-operative memory performance of patients submitted to epilepsy surgery due to temporal mesial sclerosis.Methods: The sample comprised 64 patients with temporal lobe epilepsy refractory to drug treatment submitted to selective amygdalohippocampectomy. We compared patients who had hippocampal slices generating electrical activity (viable) with those whose results did not show electrophysiological findings in vitro (non-viable). Memory performance was assessed through the Wechsler Memory Scale Revised (WMS-R). The variables investigated were immediate verbal memory, delayed verbal memory, immediate visual memory and delayed visual memory in the pre- and post-operative periods.Results: There was a statistically significant improvement in the group with hippocampal slices without electrical activity (non-viable), mainly as regards delayed verbal memory (p=0.012). In immediate and delayed visual memory there was an important improvement as well in the non-viable group, yet statistically insignificant. In the viable group only delayed verbal memory was enhanced, with a slight positive effect after withdrawal of the hippocampus. The most important difference between the groups was found in right hemisphere resections, where the results were not significant for delayed verbal memory in the viable group and there was a significant improvement of this variable in the non-viable group. In left hemisphere resections there was improved performance of delayed verbal memory in both groups.Conclusion: The non-viable group correlated better with post-operative memory performance, i.e. patients where hippocampal slices without electrical activity were resected had good memory outcomes after surgery.Objetivo: Investigar a correla??o entre a atividade el?trica neuronal (viabilidade) em fatias hipocampais humanas no estudo in vitro e o desempenho de mem?ria no per?odo p?s-operat?rio de pacientes submetidos ? cirurgia da epilepsia devido ? esclerose mesial temporal.Metodologia: A amostra foi constitu?da por 64 pacientes com epilepsia do lobo temporal refrat?ria ao tratamento medicamentoso, submetidos ? amigdalohipocampectomia seletiva. Foram comparados pacientes que tiveram as fatias hipocampais que geraram atividade el?trica (vi?veis) com aqueles que os resultados n?o produziram achados eletrofisiol?gicos in vitro (n?o vi?veis). O desempenho de mem?ria foi analisado a partir da Escala de Mem?ria Weschler revisada (WMS-R). As vari?veis investigadas foram os resultados de mem?ria verbal imediata, mem?ria verbal tardia, mem?ria visual imediata bem como mem?ria visual tardia nos per?odos pr? e p?s-cir?rgico.Resultados: Houve uma melhora no funcionamento da mem?ria ap?s a cirurgia, estatisticamente significativa no grupo com fatias do hipocampo sem atividade el?trica neuronal (n?o-vi?vel), principalmente em rela??o ? mem?ria verbal tardia (p=0,012). Nas mem?rias visuais imediata e tardia tamb?m observou-se uma melhora importante no grupo n?o vi?vel, por?m n?o estatisticamente significativa. No grupo com fatias do hipocampo com atividade el?trica neuronal (vi?vel) destacou-se apenas a mem?ria verbal tardia, com leve efeito positivo ap?s a retirada do hipocampo. A diferen?a mais importante entre os grupos foi encontrada em ressec??es no hemisf?rio direito, sendo que no grupo vi?vel os resultados n?o foram significativos com a mem?ria verbal tardia e no grupo n?o-vi?vel houve melhora significativa desta vari?vel. Em ressec??es no hemisf?rio esquerdo, observou-se melhora no desempenho da mem?ria verbal tardia, tanto no grupo vi?vel, quanto no n?o vi?vel.Conclus?o: O grupo n?o vi?vel correlacionou-se com melhor desempenho de mem?ria no per?odo p?s-operat?rio, isto ?, os pacientes nos quais foram ressecadas fatias de hipocampo sem atividade el?trica, apresentaram bom resultado de mem?ria ap?s a cirurgia.Made available in DSpace on 2015-04-14T13:35:21Z (GMT). No. of bitstreams: 1 436186.pdf: 1522958 bytes, checksum: 500e5b78234abf1b5c5d7aae612fc524 (MD5) Previous issue date: 2011-08-29application/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/9053/436186.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Medicina e Ci?ncias da Sa?dePUCRSBRFaculdade de MedicinaMEDICINADOEN?AS DO SISTEMA NERVOSONEUROPSICOLOGIAEPILEPSIA DO LOBO TEMPORALMEM?RIAMAPEAMENTO CEREBRALHIPOCAMPOCNPQ::CIENCIAS DA SAUDE::MEDICINAMem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis7620745074616285884500600-8624664729441623247info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAIL436186.pdf.jpg436186.pdf.jpgimage/jpeg3164http://tede2.pucrs.br/tede2/bitstream/tede/1653/3/436186.pdf.jpgb668bb171db802b3c576f0e10726281cMD53TEXT436186.pdf.txt436186.pdf.txttext/plain158055http://tede2.pucrs.br/tede2/bitstream/tede/1653/2/436186.pdf.txt94e7d2a3cfe4849c7c3f530ad29dc8b0MD52ORIGINAL436186.pdfapplication/pdf1522958http://tede2.pucrs.br/tede2/bitstream/tede/1653/1/436186.pdf500e5b78234abf1b5c5d7aae612fc524MD51tede/16532015-04-17 17:04:42.253oai:tede2.pucrs.br:tede/1653Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2015-04-17T20:04:42Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
title |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
spellingShingle |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal Azambuja, Luciana Schermann MEDICINA DOEN?AS DO SISTEMA NERVOSO NEUROPSICOLOGIA EPILEPSIA DO LOBO TEMPORAL MEM?RIA MAPEAMENTO CEREBRAL HIPOCAMPO CNPQ::CIENCIAS DA SAUDE::MEDICINA |
title_short |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
title_full |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
title_fullStr |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
title_full_unstemmed |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
title_sort |
Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal |
author |
Azambuja, Luciana Schermann |
author_facet |
Azambuja, Luciana Schermann |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Portuguez, Mirna Wetters |
dc.contributor.advisor1ID.fl_str_mv |
CPF:38932946000 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4765068Y6 |
dc.contributor.authorID.fl_str_mv |
CPF:94947554053 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4735244T9 |
dc.contributor.author.fl_str_mv |
Azambuja, Luciana Schermann |
contributor_str_mv |
Portuguez, Mirna Wetters |
dc.subject.por.fl_str_mv |
MEDICINA DOEN?AS DO SISTEMA NERVOSO NEUROPSICOLOGIA EPILEPSIA DO LOBO TEMPORAL MEM?RIA MAPEAMENTO CEREBRAL HIPOCAMPO |
topic |
MEDICINA DOEN?AS DO SISTEMA NERVOSO NEUROPSICOLOGIA EPILEPSIA DO LOBO TEMPORAL MEM?RIA MAPEAMENTO CEREBRAL HIPOCAMPO CNPQ::CIENCIAS DA SAUDE::MEDICINA |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS DA SAUDE::MEDICINA |
description |
Aim: To investigate the correlation between neuronal electrical activity (viability) in human hippocampal slices in vitro and post-operative memory performance of patients submitted to epilepsy surgery due to temporal mesial sclerosis.Methods: The sample comprised 64 patients with temporal lobe epilepsy refractory to drug treatment submitted to selective amygdalohippocampectomy. We compared patients who had hippocampal slices generating electrical activity (viable) with those whose results did not show electrophysiological findings in vitro (non-viable). Memory performance was assessed through the Wechsler Memory Scale Revised (WMS-R). The variables investigated were immediate verbal memory, delayed verbal memory, immediate visual memory and delayed visual memory in the pre- and post-operative periods.Results: There was a statistically significant improvement in the group with hippocampal slices without electrical activity (non-viable), mainly as regards delayed verbal memory (p=0.012). In immediate and delayed visual memory there was an important improvement as well in the non-viable group, yet statistically insignificant. In the viable group only delayed verbal memory was enhanced, with a slight positive effect after withdrawal of the hippocampus. The most important difference between the groups was found in right hemisphere resections, where the results were not significant for delayed verbal memory in the viable group and there was a significant improvement of this variable in the non-viable group. In left hemisphere resections there was improved performance of delayed verbal memory in both groups.Conclusion: The non-viable group correlated better with post-operative memory performance, i.e. patients where hippocampal slices without electrical activity were resected had good memory outcomes after surgery. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-08-29 |
dc.date.available.fl_str_mv |
2012-01-20 |
dc.date.accessioned.fl_str_mv |
2015-04-14T13:35:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
AZAMBUJA, Luciana Schermann. Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal. 2011. 95 f. Tese (Doutorado em Medicina e Ci?ncias da Sa?de) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2011. |
dc.identifier.uri.fl_str_mv |
http://tede2.pucrs.br/tede2/handle/tede/1653 |
identifier_str_mv |
AZAMBUJA, Luciana Schermann. Mem?ria e atividade el?trica neuronal do hipocampo ap?s ressec??o na epilepsia do lobo temporal. 2011. 95 f. Tese (Doutorado em Medicina e Ci?ncias da Sa?de) - Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Porto Alegre, 2011. |
url |
http://tede2.pucrs.br/tede2/handle/tede/1653 |
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por |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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Programa de P?s-Gradua??o em Medicina e Ci?ncias da Sa?de |
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PUCRS |
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Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
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