Abstract:Background
Exercise intolerance is the central symptom of patients with heart failure and preserved ejection fraction (HFpEF). Underlying reduced cardiac functional reserve in response to adrenergic stimuli (stress testing) has been suggested but the molecular mechanisms are insufficiently understood. In cardiomyocytes, nitric oxide (NO) modifies contractility and is required to achieve a full adrenergic response. Recently, dysregulation of NO release has been described to contribute to HFpEF… Show more
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