A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico

OBJECTIVE: Hepatic encephalopathy (HE) is a neuropsychiatric syndrome resulting from liver failure. In the present study, we aimed to standardize an animal model of HE induced by thioacetamide (TAA) in C57BL/6 mice evaluating behavioral symptoms in association with liver damage and alterations in ne...

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Main Authors: Aline Silva de Miranda, David Henrique Rodrigues, Luciene Bruno Vieira, Cristiano Xavier Lima, Milene Alvarenga Rachid, Paula Vieira Teixeira Vidigal, Marcus Vinicius Gomez, Helton José dos Reis, Cristina Guatimosim, Antônio Lúcio Teixeira
Format: Article
Language:English
Published: Academia Brasileira de Neurologia (ABNEURO) 2010-08-01
Series:Arquivos de Neuro-Psiquiatria
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2010000400022
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spelling doaj-ec50892091c94de6bb3e463cb8ddc2ff2020-11-24T23:54:35ZengAcademia Brasileira de Neurologia (ABNEURO)Arquivos de Neuro-Psiquiatria0004-282X1678-42272010-08-0168459760210.1590/S0004-282X2010000400022A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímicoAline Silva de MirandaDavid Henrique RodriguesLuciene Bruno VieiraCristiano Xavier LimaMilene Alvarenga RachidPaula Vieira Teixeira VidigalMarcus Vinicius GomezHelton José dos ReisCristina GuatimosimAntônio Lúcio TeixeiraOBJECTIVE: Hepatic encephalopathy (HE) is a neuropsychiatric syndrome resulting from liver failure. In the present study, we aimed to standardize an animal model of HE induced by thioacetamide (TAA) in C57BL/6 mice evaluating behavioral symptoms in association with liver damage and alterations in neurotransmitter release. METHOD: HE was induced by an intraperitoneal single dose of TAA (200 mg/kg, 600 mg/kg or 1,200 mg/kg). Behavioral symptoms were evaluated using the SHIRPA battery. Liver damage was confirmed by histopathological analysis. The glutamate release was measured using fluorimetric assay. RESULTS: The neuropsychiatric state, motor behavior and reflex and sensory functions were significantly altered in the group receiving 600 mg/kg of TAA. Biochemical analysis revealed an increase in the glutamate release in the cerebral cortex of HE mice. CONCLUSION: HE induced by 600mg/kg TAA injection in C57BL/6 mice seems to be a suitable model to investigate the pathogenesis and clinical disorders of HE.<br>OBJETIVO: A encefalopatia hepática (EH) é uma síndrome neuropsiquiátrica resultante da falência hepática. O objetivo do presente estudo foi estabelecer um modelo de EH induzida por tioacetamida (TAA) em camundongos C57BL/6 avaliando transtornos comportamentais, falência hepática e alterações na liberação de neurotransmissores. MÉTODO: A EH foi induzida por meio de uma única dose intraperitoneal de TAA (200 mg/kg, 600 mg/kg, 1.200 mg/kg). As alterações comportamentais foram avaliadas utilizando a bateria SHIRPA. A falência hepática foi confirmada através de análises histopatológicas e a liberação de glutamato medida, por ensaio fluorimétrico. RESULTADOS: Foram encontradas alterações significativas no estado neuropsiquiátrico, comportamento motor e função reflexa e sensorial no grupo que recebeu 600 mg/kg de TAA. Análises bioquímicas revelaram aumento na liberação de glutamato no córtex cerebral dos camundongos com EH. CONCLUSÃO: A EH induzida por 600 mg/kg de TAA em camundongos C57BL/6 parece ser um modelo apropriado para a investigação da patogênese e dos transtornos clínicos da EH.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2010000400022encefalopatia hepáticatioacetamidaalterações comportamentaisSHIRPAglutamatohepatic encephalopathythioacetamidebehavioral changesSHIRPAglutamate
collection DOAJ
language English
format Article
sources DOAJ
author Aline Silva de Miranda
David Henrique Rodrigues
Luciene Bruno Vieira
Cristiano Xavier Lima
Milene Alvarenga Rachid
Paula Vieira Teixeira Vidigal
Marcus Vinicius Gomez
Helton José dos Reis
Cristina Guatimosim
Antônio Lúcio Teixeira
spellingShingle Aline Silva de Miranda
David Henrique Rodrigues
Luciene Bruno Vieira
Cristiano Xavier Lima
Milene Alvarenga Rachid
Paula Vieira Teixeira Vidigal
Marcus Vinicius Gomez
Helton José dos Reis
Cristina Guatimosim
Antônio Lúcio Teixeira
A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
Arquivos de Neuro-Psiquiatria
encefalopatia hepática
tioacetamida
alterações comportamentais
SHIRPA
glutamato
hepatic encephalopathy
thioacetamide
behavioral changes
SHIRPA
glutamate
author_facet Aline Silva de Miranda
David Henrique Rodrigues
Luciene Bruno Vieira
Cristiano Xavier Lima
Milene Alvarenga Rachid
Paula Vieira Teixeira Vidigal
Marcus Vinicius Gomez
Helton José dos Reis
Cristina Guatimosim
Antônio Lúcio Teixeira
author_sort Aline Silva de Miranda
title A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
title_short A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
title_full A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
title_fullStr A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
title_full_unstemmed A thioacetamide-induced hepatic encephalopathy model in C57BL/6 mice: a behavioral and neurochemical study Modelo de encefalopatia hepática induzida por tioacetamida em camundongos C57BL/6: estudo comportamental e neuroquímico
title_sort thioacetamide-induced hepatic encephalopathy model in c57bl/6 mice: a behavioral and neurochemical study modelo de encefalopatia hepática induzida por tioacetamida em camundongos c57bl/6: estudo comportamental e neuroquímico
publisher Academia Brasileira de Neurologia (ABNEURO)
series Arquivos de Neuro-Psiquiatria
issn 0004-282X
1678-4227
publishDate 2010-08-01
description OBJECTIVE: Hepatic encephalopathy (HE) is a neuropsychiatric syndrome resulting from liver failure. In the present study, we aimed to standardize an animal model of HE induced by thioacetamide (TAA) in C57BL/6 mice evaluating behavioral symptoms in association with liver damage and alterations in neurotransmitter release. METHOD: HE was induced by an intraperitoneal single dose of TAA (200 mg/kg, 600 mg/kg or 1,200 mg/kg). Behavioral symptoms were evaluated using the SHIRPA battery. Liver damage was confirmed by histopathological analysis. The glutamate release was measured using fluorimetric assay. RESULTS: The neuropsychiatric state, motor behavior and reflex and sensory functions were significantly altered in the group receiving 600 mg/kg of TAA. Biochemical analysis revealed an increase in the glutamate release in the cerebral cortex of HE mice. CONCLUSION: HE induced by 600mg/kg TAA injection in C57BL/6 mice seems to be a suitable model to investigate the pathogenesis and clinical disorders of HE.<br>OBJETIVO: A encefalopatia hepática (EH) é uma síndrome neuropsiquiátrica resultante da falência hepática. O objetivo do presente estudo foi estabelecer um modelo de EH induzida por tioacetamida (TAA) em camundongos C57BL/6 avaliando transtornos comportamentais, falência hepática e alterações na liberação de neurotransmissores. MÉTODO: A EH foi induzida por meio de uma única dose intraperitoneal de TAA (200 mg/kg, 600 mg/kg, 1.200 mg/kg). As alterações comportamentais foram avaliadas utilizando a bateria SHIRPA. A falência hepática foi confirmada através de análises histopatológicas e a liberação de glutamato medida, por ensaio fluorimétrico. RESULTADOS: Foram encontradas alterações significativas no estado neuropsiquiátrico, comportamento motor e função reflexa e sensorial no grupo que recebeu 600 mg/kg de TAA. Análises bioquímicas revelaram aumento na liberação de glutamato no córtex cerebral dos camundongos com EH. CONCLUSÃO: A EH induzida por 600 mg/kg de TAA em camundongos C57BL/6 parece ser um modelo apropriado para a investigação da patogênese e dos transtornos clínicos da EH.
topic encefalopatia hepática
tioacetamida
alterações comportamentais
SHIRPA
glutamato
hepatic encephalopathy
thioacetamide
behavioral changes
SHIRPA
glutamate
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2010000400022
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