Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos

Detalhes bibliográficos
Autor(a) principal: Schraiber, Rosiane de Bona
Data de Publicação: 2016
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Universitário da Ânima (RUNA)
Texto Completo: https://repositorio.animaeducacao.com.br/handle/ANIMA/3069
Resumo: Introduction: Obesity is a chronic disease whose pathophysiology involves changes in peripheral tissues and in the central nervous system (CNS). In this context, many researchers seek to understand the influence of saturated fat intake on the hypothalamus, a key structure in the food control. Objective: Assess inflammatory parameters of oxidative stress and energy metabolism in the hypothalamus of mice led to an animal model of obesity. Methodology: Swiss mice were divided into two study groups: control group and obese group. The control animals were fed with a diet with adequate amounts of macronutrients (standard diet), while the animals in the obese group were induced to obesity through the consumption of a diet high in saturated fat (high fat diet). Obesity induction had a duration of 10 weeks, and at the end of this period, the disease model was validated in animals. Shortly thereafter, the mice were euthanized; tissues of interest were dissected and taken for biochemical analysis. Results: Animals in the obese group had higher calorie consumption and, allied to this, had higher body weight and higher weight of mesenteric fat, compared to the control group. Obesity presented an increase in the levels of interleukin 1β (IL-1β) and decreased levels of interleukin 10 (IL-10) in the hypothalamus of animals. In addition, there was increased lipid peroxidation and protein carbonylation, coupled with the lower level of GSH in the hypothalamus of obese animals. However, there was no statistically significant difference in the activity of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) in the hypothalamus of both groups. The obese group had lower activity of complex I, II and IV of the mitochondrial respiratory chain, as well as lower activity of creatine kinase (CK) in the hypothalamus. Conclusion: Obesity presented inflammation, oxidative stress and mitochondrial dysfunction in the hypothalamus, a key structure in the food control.
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spelling Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongosHipotálamoObesidadeEstresse oxidativoMetabolismoIntroduction: Obesity is a chronic disease whose pathophysiology involves changes in peripheral tissues and in the central nervous system (CNS). In this context, many researchers seek to understand the influence of saturated fat intake on the hypothalamus, a key structure in the food control. Objective: Assess inflammatory parameters of oxidative stress and energy metabolism in the hypothalamus of mice led to an animal model of obesity. Methodology: Swiss mice were divided into two study groups: control group and obese group. The control animals were fed with a diet with adequate amounts of macronutrients (standard diet), while the animals in the obese group were induced to obesity through the consumption of a diet high in saturated fat (high fat diet). Obesity induction had a duration of 10 weeks, and at the end of this period, the disease model was validated in animals. Shortly thereafter, the mice were euthanized; tissues of interest were dissected and taken for biochemical analysis. Results: Animals in the obese group had higher calorie consumption and, allied to this, had higher body weight and higher weight of mesenteric fat, compared to the control group. Obesity presented an increase in the levels of interleukin 1β (IL-1β) and decreased levels of interleukin 10 (IL-10) in the hypothalamus of animals. In addition, there was increased lipid peroxidation and protein carbonylation, coupled with the lower level of GSH in the hypothalamus of obese animals. However, there was no statistically significant difference in the activity of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) in the hypothalamus of both groups. The obese group had lower activity of complex I, II and IV of the mitochondrial respiratory chain, as well as lower activity of creatine kinase (CK) in the hypothalamus. Conclusion: Obesity presented inflammation, oxidative stress and mitochondrial dysfunction in the hypothalamus, a key structure in the food control.Introdução: A obesidade é uma doença crônica, cuja fisiopatologia envolve alterações nos tecidos periféricos e no Sistema Nervoso Central (SNC). Nesse contexto, diversos pesquisadores buscam compreender qual a influência do consumo de gordura saturada sobre o hipotálamo, estrutura chave no controle alimentar. Objetivo: Avaliar parâmetros inflamatórios, de estresse oxidativo e de metabolismo energético no hipotálamo de camundongos induzidos a um modelo animal de obesidade. Metodologia: Camundongos Swiss machos foram divididos em dois grupos de estudos: grupo controle e grupo obeso. Os animais do grupo controle foram alimentados com uma dieta com quantidades adequadas de macronutrientes (ração normolipídica), enquanto que os animais do grupo obeso foram induzidos a obesidade por meio do consumo de uma dieta rica em gordura saturada (ração hiperlipídica). A indução da obesidade teve uma duração de 10 semanas, e ao término desse período, o modelo da doença foi validado nos animais. Logo em seguida, os camundongos foram mortos, os tecidos de interesse foram dissecados e encaminhados para as análises bioquímicas. Resultados: Os animais do grupo obeso apresentaram maior consumo de calorias e, aliado a isso, apresentaram maior peso corporal, bem como maior peso de gordura mesentérica que os animais do grupo controle. A obesidade cursou com aumento nos níveis de interleucina 1β (IL-1β) e diminuição dos níveis de interleucina 10 (IL-10) no hipotálamo dos animais. Além disso, houve aumento da peroxidação lipídica e carbonilação de proteínas, aliada ao menor nível de glutationa (GSH) no hipotálamo dos animais obesos. No entanto, não houve diferença estatisticamente significativa quanto a atividade das enzimas antioxidantes superóxido dismutase (SOD) e catalase (CAT) no hipotálamo de ambos os grupos. O grupo obeso apresentou menor atividade dos complexos I, II e IV da cadeia respiratória mitocondrial, bem como menor atividade da creatina quinase (CK) no hipotálamo. Conclusão: A obesidade cursou com inflamação, estresse oxidativo e disfunção mitocondrial no hipotálamo, estrutura chave no controle alimentar.Rezin, Gislaine TezzaSchraiber, Rosiane de Bona2017-05-05T18:52:02Z2020-11-26T20:55:05Z2017-05-05T18:52:02Z2020-11-26T20:55:05Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis74 f.application/pdfapplication/pdfhttps://repositorio.animaeducacao.com.br/handle/ANIMA/3069Programa de Pós-Graduação em Ciência da SaúdeTubarãoporreponame:Repositório Universitário da Ânima (RUNA)instname:Ânima Educaçãoinstacron:Ânimainfo:eu-repo/semantics/openAccess2020-12-01T16:47:40Zoai:repositorio.animaeducacao.com.br:ANIMA/3069Repositório InstitucionalPRIhttps://repositorio.animaeducacao.com.br/oai/requestcontato@animaeducacao.com.bropendoar:2020-12-01T16:47:40Repositório Universitário da Ânima (RUNA) - Ânima Educaçãofalse
dc.title.none.fl_str_mv Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
title Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
spellingShingle Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
Schraiber, Rosiane de Bona
Hipotálamo
Obesidade
Estresse oxidativo
Metabolismo
title_short Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
title_full Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
title_fullStr Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
title_full_unstemmed Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
title_sort Efeito da obesidade sobre parâmetros inflamatórios e bioquímicos no hipotálamo de camundongos
author Schraiber, Rosiane de Bona
author_facet Schraiber, Rosiane de Bona
author_role author
dc.contributor.none.fl_str_mv Rezin, Gislaine Tezza
dc.contributor.author.fl_str_mv Schraiber, Rosiane de Bona
dc.subject.por.fl_str_mv Hipotálamo
Obesidade
Estresse oxidativo
Metabolismo
topic Hipotálamo
Obesidade
Estresse oxidativo
Metabolismo
description Introduction: Obesity is a chronic disease whose pathophysiology involves changes in peripheral tissues and in the central nervous system (CNS). In this context, many researchers seek to understand the influence of saturated fat intake on the hypothalamus, a key structure in the food control. Objective: Assess inflammatory parameters of oxidative stress and energy metabolism in the hypothalamus of mice led to an animal model of obesity. Methodology: Swiss mice were divided into two study groups: control group and obese group. The control animals were fed with a diet with adequate amounts of macronutrients (standard diet), while the animals in the obese group were induced to obesity through the consumption of a diet high in saturated fat (high fat diet). Obesity induction had a duration of 10 weeks, and at the end of this period, the disease model was validated in animals. Shortly thereafter, the mice were euthanized; tissues of interest were dissected and taken for biochemical analysis. Results: Animals in the obese group had higher calorie consumption and, allied to this, had higher body weight and higher weight of mesenteric fat, compared to the control group. Obesity presented an increase in the levels of interleukin 1β (IL-1β) and decreased levels of interleukin 10 (IL-10) in the hypothalamus of animals. In addition, there was increased lipid peroxidation and protein carbonylation, coupled with the lower level of GSH in the hypothalamus of obese animals. However, there was no statistically significant difference in the activity of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) in the hypothalamus of both groups. The obese group had lower activity of complex I, II and IV of the mitochondrial respiratory chain, as well as lower activity of creatine kinase (CK) in the hypothalamus. Conclusion: Obesity presented inflammation, oxidative stress and mitochondrial dysfunction in the hypothalamus, a key structure in the food control.
publishDate 2016
dc.date.none.fl_str_mv 2016
2017-05-05T18:52:02Z
2017-05-05T18:52:02Z
2020-11-26T20:55:05Z
2020-11-26T20:55:05Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://repositorio.animaeducacao.com.br/handle/ANIMA/3069
url https://repositorio.animaeducacao.com.br/handle/ANIMA/3069
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Programa de Pós-Graduação em Ciência da Saúde
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 74 f.
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Tubarão
dc.source.none.fl_str_mv reponame:Repositório Universitário da Ânima (RUNA)
instname:Ânima Educação
instacron:Ânima
instname_str Ânima Educação
instacron_str Ânima
institution Ânima
reponame_str Repositório Universitário da Ânima (RUNA)
collection Repositório Universitário da Ânima (RUNA)
repository.name.fl_str_mv Repositório Universitário da Ânima (RUNA) - Ânima Educação
repository.mail.fl_str_mv contato@animaeducacao.com.br
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