Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Dementia & Neuropsychologia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642017000300249 |
Resumo: | ABSTRACT INTRODUCTION: TDP-43 is an intranuclear protein involved in many cellular processes. When altered, it shows a change in pattern of distribution, as well as in functioning, throughout the Central Nervous System structures. Frontotemporal Lobar Degeneration (FTLD) and Amyotrophic Lateral Sclerosis (ALS) are examples of TDP-43 proteinopathy. These disorders form a clinical spectrum, with some patients having a pure cognitive disorder while others also exhibit motor features. METHODS: We studied two donated brains from patients with a diagnosis of Frontotemporal Dementia (FTD), one of which was associated with ALS (ALS-FTD). After fixation and macroscopic examinations, sample analyses were performed. Specific regions were chosen for the application of immunohistochemistry (IHC) with anti-Aβ, AT8, anti-α-synuclein and anti-phospho-TDP-43. RESULTS: Both brains presented anti-phospho-TDP-43 positivity, but this was not equally distributed throughout the encephalic zones. In the FTD case, the studied brain presented phosphorylated TDP-43- in the frontal cortex, hippocampus, entorhinal cortex and mesencephalon; in the ALS-FTD case, the abnormal protein was also seen in the pons and medulla oblongata. The brain in the ALS-FTD case presented Aβ and AT8 positivity in the hippocampus and entorhinal cortex (Braak I and II). DISCUSSION: The hypothesis supported by scientific literature that these neurodegenerative diseases can have the same etiology with distinct encephalic region involvement is corroborated by the present study. |
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Dementia & Neuropsychologia |
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Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALSTDP-43frontotemporal dementiaamyotrophic lateral sclerosisneuropathologyABSTRACT INTRODUCTION: TDP-43 is an intranuclear protein involved in many cellular processes. When altered, it shows a change in pattern of distribution, as well as in functioning, throughout the Central Nervous System structures. Frontotemporal Lobar Degeneration (FTLD) and Amyotrophic Lateral Sclerosis (ALS) are examples of TDP-43 proteinopathy. These disorders form a clinical spectrum, with some patients having a pure cognitive disorder while others also exhibit motor features. METHODS: We studied two donated brains from patients with a diagnosis of Frontotemporal Dementia (FTD), one of which was associated with ALS (ALS-FTD). After fixation and macroscopic examinations, sample analyses were performed. Specific regions were chosen for the application of immunohistochemistry (IHC) with anti-Aβ, AT8, anti-α-synuclein and anti-phospho-TDP-43. RESULTS: Both brains presented anti-phospho-TDP-43 positivity, but this was not equally distributed throughout the encephalic zones. In the FTD case, the studied brain presented phosphorylated TDP-43- in the frontal cortex, hippocampus, entorhinal cortex and mesencephalon; in the ALS-FTD case, the abnormal protein was also seen in the pons and medulla oblongata. The brain in the ALS-FTD case presented Aβ and AT8 positivity in the hippocampus and entorhinal cortex (Braak I and II). DISCUSSION: The hypothesis supported by scientific literature that these neurodegenerative diseases can have the same etiology with distinct encephalic region involvement is corroborated by the present study.Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento2017-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642017000300249Dementia & Neuropsychologia v.11 n.3 2017reponame:Dementia & Neuropsychologiainstname:Associação de Neurologia Cognitiva e do Comportamento (ANCC)instacron:ANCC10.1590/1980-57642016dn11-030006info:eu-repo/semantics/openAccessGuedes,Álvaro C.B.Santin,RicardoCosta,André S.R.Reiter,Keli C.Hilbig,ArleteFernandez,Liana L.eng2017-10-23T00:00:00Zoai:scielo:S1980-57642017000300249Revistahttp://www.demneuropsy.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||demneuropsy@uol.com.br1980-57641980-5764opendoar:2017-10-23T00:00Dementia & Neuropsychologia - Associação de Neurologia Cognitiva e do Comportamento (ANCC)false |
dc.title.none.fl_str_mv |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
title |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
spellingShingle |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS Guedes,Álvaro C.B. TDP-43 frontotemporal dementia amyotrophic lateral sclerosis neuropathology |
title_short |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
title_full |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
title_fullStr |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
title_full_unstemmed |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
title_sort |
Distinct Phospho-TDP-43 brain distribution in two cases of FTD, one associated with ALS |
author |
Guedes,Álvaro C.B. |
author_facet |
Guedes,Álvaro C.B. Santin,Ricardo Costa,André S.R. Reiter,Keli C. Hilbig,Arlete Fernandez,Liana L. |
author_role |
author |
author2 |
Santin,Ricardo Costa,André S.R. Reiter,Keli C. Hilbig,Arlete Fernandez,Liana L. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Guedes,Álvaro C.B. Santin,Ricardo Costa,André S.R. Reiter,Keli C. Hilbig,Arlete Fernandez,Liana L. |
dc.subject.por.fl_str_mv |
TDP-43 frontotemporal dementia amyotrophic lateral sclerosis neuropathology |
topic |
TDP-43 frontotemporal dementia amyotrophic lateral sclerosis neuropathology |
description |
ABSTRACT INTRODUCTION: TDP-43 is an intranuclear protein involved in many cellular processes. When altered, it shows a change in pattern of distribution, as well as in functioning, throughout the Central Nervous System structures. Frontotemporal Lobar Degeneration (FTLD) and Amyotrophic Lateral Sclerosis (ALS) are examples of TDP-43 proteinopathy. These disorders form a clinical spectrum, with some patients having a pure cognitive disorder while others also exhibit motor features. METHODS: We studied two donated brains from patients with a diagnosis of Frontotemporal Dementia (FTD), one of which was associated with ALS (ALS-FTD). After fixation and macroscopic examinations, sample analyses were performed. Specific regions were chosen for the application of immunohistochemistry (IHC) with anti-Aβ, AT8, anti-α-synuclein and anti-phospho-TDP-43. RESULTS: Both brains presented anti-phospho-TDP-43 positivity, but this was not equally distributed throughout the encephalic zones. In the FTD case, the studied brain presented phosphorylated TDP-43- in the frontal cortex, hippocampus, entorhinal cortex and mesencephalon; in the ALS-FTD case, the abnormal protein was also seen in the pons and medulla oblongata. The brain in the ALS-FTD case presented Aβ and AT8 positivity in the hippocampus and entorhinal cortex (Braak I and II). DISCUSSION: The hypothesis supported by scientific literature that these neurodegenerative diseases can have the same etiology with distinct encephalic region involvement is corroborated by the present study. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642017000300249 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642017000300249 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-57642016dn11-030006 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento |
publisher.none.fl_str_mv |
Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento |
dc.source.none.fl_str_mv |
Dementia & Neuropsychologia v.11 n.3 2017 reponame:Dementia & Neuropsychologia instname:Associação de Neurologia Cognitiva e do Comportamento (ANCC) instacron:ANCC |
instname_str |
Associação de Neurologia Cognitiva e do Comportamento (ANCC) |
instacron_str |
ANCC |
institution |
ANCC |
reponame_str |
Dementia & Neuropsychologia |
collection |
Dementia & Neuropsychologia |
repository.name.fl_str_mv |
Dementia & Neuropsychologia - Associação de Neurologia Cognitiva e do Comportamento (ANCC) |
repository.mail.fl_str_mv |
||demneuropsy@uol.com.br |
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1754212931502866432 |