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Master's Dissertation
DOI
https://doi.org/10.11606/D.39.2012.tde-05022013-081445
Document
Author
Full name
Talita Sayuri Higa
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2012
Supervisor
Committee
Evangelista, Fabiana de Sant'Anna (President)
Ramires, Paulo Rizzo
Vale, Maria Isabel Cardoso Alonso
Title in Portuguese
Potencial do treinamento físico aeróbio para a prevenção do diabetes tipo 2 induzido por dieta de cafeteria: papel do tecido adiposo branco.
Keywords in Portuguese
Diabetes tipo 2
Dieta de cafeteria
Tecido adiposo branco
Treinamento físico aeróbio
Abstract in Portuguese
Evidências na literatura demonstraram que o aumento da adiposidade confere maior suscetibilidade ao desenvolvimento de diabetes tipo 2, pois o tecido adiposo branco (TAB) atua na regulação da homeostasia energética e da sensibilidade à insulina através da sua atividade endócrina e de interações com reguladores neuroendócrinos. O treinamento físico aeróbio tem sido fortemente recomendado para a prevenção e tratamento do diabetes tipo 2, pois promove adaptações no metabolismo energético que contribuem diretamente para a melhora da resposta glicêmica e para o controle de peso corporal. Embora esteja claro na literatura o papel do treinamento físico contra o desenvolvimento de distúrbios no metabolismo da glicose e obesidade, uma lacuna de conhecimento ainda existe quando buscamos informações a respeito da participação metabólica do TAB na prevenção do diabetes tipo 2 através do treinamento físico aeróbio. Dessa forma, o presente estudo teve como objetivo testar a hipótese de que o efeito protetor do treinamento físico contra o desenvolvimento de diabetes tipo 2 é mediado por adaptações funcionais do TAB. Para isso, foram utilizados camundongos alimentados com dieta normocalórica e de cafeteria submetidos ou não ao treinamento físico aeróbio. O treinamento físico aeróbio foi eficaz para a prevenção do diabetes tipo 2, e essa resposta foi associada à menor adiposidade corporal resultante do aumento da lipólise e da capacidade oxidativa do TAB induzido pela maior ativação via da AMPK/ACC
Title in English
Potential of aerobic exercise for the prevention of type 2 diabetes induced by cafeteria diet: role of white adipose tissue
Keywords in English
Aerobic exercise training
Cafeteria diet
Type 2 diabetes
White adipose tissue
Abstract in English
Evidence in the literature have shown that increased adiposity confers greater susceptibility to developing type 2 diabetes and white adipose tissue (WAT) acts in the regulation of energy homeostasis and insulin sensibility through its endocrine activity and interaction with neuroendocrine regulators. Aerobic physical training has been strongly recommended for the prevention and treatment of type 2 diabetes because it promotes adaptations in the energy metabolism that contribute directly to the improvement of glycemic metabolism and body weight control. Although it is clear in the literature the role of physical training against the development of disturbances in the glucose metabolism and obesity, the role of WAT to prevent type 2 diabetes through physical training was poorly investigated. Thus, the present study aimed to test the hypothesis that the protective effect of physical training against the development of type 2 diabetes is mediated by functional adaptations of WAT. For this, we used mice fed with control or cafeteria diet and submitted or not to aerobic physical training. The physical training was effective for the prevention of type 2 diabetes, and this response was associated with lower body fat due to increased lipolysis and oxidative capacity of WAT induced by the activation of AMPK/ACC
 
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Publishing Date
2013-02-14
 
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