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Aerobic exercise training in heart failure: impact on sympathetic hyperactivity and cardiac and skeletal muscle function BJMBR
Brum,P.C.; Bacurau,A.V.N.; Medeiros,A.; Ferreira,J.C.B.; Vanzelli,A.S.; Negrão,C.E..
Heart failure is a common endpoint for many forms of cardiovascular disease and a significant cause of morbidity and mortality. Chronic neurohumoral excitation (i.e., sympathetic hyperactivity) has been considered to be a hallmark of heart failure and is associated with a poor prognosis, cardiac dysfunction and remodeling, and skeletal myopathy. Aerobic exercise training is efficient in counteracting sympathetic hyperactivity and its toxic effects on cardiac and skeletal muscles. In this review, we describe the effects of aerobic exercise training on sympathetic hyperactivity, skeletal myopathy, as well as cardiac function and remodeling in human and animal heart failure. We also discuss the mechanisms underlying the effects of aerobic exercise training.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart failure; Exercise training; Sympathetic hyperactivity; Ventricular function; Cardiac remodeling; Skeletal myopathy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000900002
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Endothelial dysfunction in cardiovascular and endocrine-metabolic diseases: an update BJMBR
Davel,A.P.; Wenceslau,C.F.; Akamine,E.H.; Xavier,F.E.; Couto,G.K.; Oliveira,H.T.; Rossoni,L.V..
The endothelium plays a vital role in maintaining circulatory homeostasis by the release of relaxing and contracting factors. Any change in this balance may result in a process known as endothelial dysfunction that leads to impaired control of vascular tone and contributes to the pathogenesis of some cardiovascular and endocrine/metabolic diseases. Reduced endothelium-derived nitric oxide (NO) bioavailability and increased production of thromboxane A2, prostaglandin H2 and superoxide anion in conductance and resistance arteries are commonly associated with endothelial dysfunction in hypertensive, diabetic and obese animals, resulting in reduced endothelium-dependent vasodilatation and in increased vasoconstrictor responses. In addition, recent studies have...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endothelial dysfunction; Hypertension; Sympathetic hyperactivity; Diabetes; Obesity.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000900014
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