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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2009.tde-08092009-145443
Document
Author
Full name
Marcelo Gomes Pereira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Brum, Patricia Chakur (President)
Evangelista, Fabiana de Sant'Anna
Tinucci, Tais
Title in Portuguese
Efeito do treinamento físico aeróbico sobre a via do sistema renina-angiotensina em modelo genético de insuficiência cardíaca
Keywords in Portuguese
Animais geneticamente modificados
Eduacação física e treinamento
Insuficiência cardíaca
Sistema renina-angiotensina
Abstract in Portuguese
Os efeitos do treinamento físico aeróbio sobre o sistema renina-angiotensina cardíaco (SRA) foram avaliados em camundongos com insuficiência cardíaca (IC) e em seus respectivos controles (WT). O treinamento físico foi conduzido em esteira rolante (8 semanas, 5 x/sem, 60 min por dia). A tolerância à realização de esforço físico, e análises estruturais e funcionais cardíacas foram avaliadas. Os camundongos apresentaram disfunção cardíaca e fibrose associadas ao aumento na expressão de angiotensina II cardíaca e ao aumento na atividade da enzima conversora de angiotensina cardíaca (ECA). O treinamento físico aeróbio reduziu os níveis de angiotensina II e de ECA cardíaca para os mesmos valores apresentados pelo grupo controle. Além disso, elevou a expressão da ECA2 cardíaca, preveniu a intolerância à realização de esforço físico e a disfunção cardíaca, com pouco impacto sobre o remodelamento cardíaco
Title in English
Effect of aerobic exercise trainingon the renin-angiotensin system in a genetic model of heart failure
Keywords in English
Animals genetically modified
Heart failure
Physical education and training
Renin-angiotensin system
Abstract in English
The effects of aerobic exercise training on the cardiac renin-angiotensin system (RAS) was evaluated in mice with heart failure (HF) and control (WT). The exercise training was realized in a motor treadmill (8 weeks, 5d/wk, 60 min/day). The exercise tolerance, structural and function analysis were evaluated. Mice displayed cardiac dysfunction and fibrosis associated to increased in cardiac angiotensin II expression and angiotensin converting enzyme activity (ACE). The exercise training reduced cardiac angiotensin II and ACE levels to age-matched WT. In addition, increased the ACE2 expression, prevent the exercise intolerance and cardiac dysfunction, with little impact on cardiac remodeling
 
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Publishing Date
2009-09-10
 
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