Proliferative hippocampal activity in a group of patients with Rasmussen's encephalitis: Neuronal, glial, and BDNF tissue expression correlations

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dc.citation.volumev. 82
dc.contributor.authorMagno, Elane N. [UNIFESP]
dc.coverageSan Diego
dc.date.accessioned2020-07-20T16:30:51Z
dc.date.available2020-07-20T16:30:51Z
dc.date.issued2018
dc.description.abstractRasmussen's encephalitis (RE) is a rare and devastating unilateral inflammatory brain disease that causes severe and intractable partial epilepsy. It has been shown that epilepsy and subsequent inflammation have deleterious influence on hippocampal cell survival and neurogenesis, but this still has not been systematically explored in human tissue. In this study, we investigated the correlation between inflammation and epilepsy as well as the rates of hippocampal gliogenesis and neurogenesis in a pediatric group of six patients with RE and six control cases. The dentate gyrus (DG) samples were obtained from patients who underwent surgery for intractable RE. Sections were processed for immunohistochemistry using antibodies against sex determining region Y-box 2 (Sox2), nestin, human protein encoded by MK167 gen (Ki67), and brain-derived neurotrophic factor (BDNF). There was an increase in the number of Ki67-positive granule cells in the DG of patients with RE in comparison with the autopsy control group, but no statistical difference for Sox2-positive cells was observed between these groups. Nestin immunolabeling was less intense in the RE group while BDNF expression was increased. Neurons that were BDNF-positive were found in DG from patients with RE but not in the control group. In patients with RE, few nestin-positive cells in DG were also positive for BDNF, unlike in controls which showed no colocalization for these two markers. These results suggest a proliferation activity in the DG subfield of patients with RE, and also future studies are necessary to address the role of new cells in the hippocampus of patients with RE. (C) 2018 Elsevier Inc. All rights reserved.en
dc.description.affiliationUniv Fed Sao Paulo, Lab Expt Neurol, Sao Paulo, Brazil
dc.description.affiliationUniv Fed Maranhao, Histol Lab, Sao Luis, Maranhao, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Lab Expt Neurol, Sao Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipNational Council for Scientific and Technological Development (CNPq)
dc.format.extent29-37
dc.identifierhttp://dx.doi.org/10.1016/j.yebeh.2018.02.022
dc.identifier.citationEpilepsy & Behavior. San Diego, v. 82, p. 29-37, 2018.
dc.identifier.doi10.1016/j.yebeh.2018.02.022
dc.identifier.issn1525-5050
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55556
dc.identifier.wosWOS:000432591100006
dc.language.isoeng
dc.publisherAcademic Press Inc Elsevier Science
dc.relation.ispartofEpilepsy & Behavior
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectRasmussen's encephalitisen
dc.subjectInflammationen
dc.subjectNeurogenesisen
dc.subjectEpilepsyen
dc.titleProliferative hippocampal activity in a group of patients with Rasmussen's encephalitis: Neuronal, glial, and BDNF tissue expression correlationsen
dc.typeinfo:eu-repo/semantics/article
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