Elderly healthy individuals have a reduced exercise tolerance and a decreased left ventricle inotropic reserve related to increased vascular afterload, arterial-ventricular load mismatching, physical deconditioning and impaired autonomic regulation (the so called "β-adrenergic desensitization"). Adrenergic responsiveness is altered with aging and the age-related changes are limited to the β-adrenergic receptor density reduction and to the β-adrenoceptor-G-protein(s)-adenylyl cyclase system abnormalities, while the type and level of abnormalities change with species and tissues. Epidemiological studies have shown an high incidence and prevalence of heart failure in the elderly and a great body of evidence correlate the changes of β-adrenergic system with heart failure pathogenesis. In particular it is well known that: (a) levels of cathecolamines are directly correlated with mortality and functional status in heart failure, (b) β1-adrenergic receptor subtype is down-regulated in heart failure, (c) heart failure-dependent cardiac adrenergic responsiveness reduction is related to changes in G proteins activity. In this review we focus on the cardiovascular β-adrenergic changes involvement in the aging process and on similarities and differences between aging heart and heart failure.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3885807 | PMC |
| http://dx.doi.org/10.3389/fphys.2013.00396 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Artificial Intelligence-Enhanced Electrocardiography for Prediction of Incident Hypertension.
JAMA Cardiol
January 2025
National Heart and Lung Institute, Imperial College London, United Kingdom.
Importance: Hypertension underpins significant global morbidity and mortality. Early lifestyle intervention and treatment are effective in reducing adverse outcomes. Artificial intelligence-enhanced electrocardiography (AI-ECG) has been shown to identify a broad spectrum of subclinical disease and may be useful for predicting incident hypertension.
View Article and Find Full Text PDFSystolic Blood Pressure and Pulse Pressure in Heart Failure: Pooled Participant-Level Analysis of 4 Trials.
J Am Coll Cardiol
November 2024
Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. Electronic address:
Background: Hypertension is common in patients with heart failure with mildly reduced or preserved ejection fraction (HFmrEF/HFpEF), and current guidelines recommend treating systolic blood pressure (SBP) to a target <130 mm Hg. However, data supporting treatment to this target are limited. Additionally, pulse pressure (PP), a marker of aortic stiffness, has been associated with increased risk of cardiovascular events, but its prognostic impact in HFpEF has not been extensively studied.
View Article and Find Full Text PDFAcute myocardial infarction (MI) is a leading cause of death worldwide. Although with current treatment, acute mortality from MI is low, the damage and remodeling associated with MI are responsible for subsequent heart failure. Reducing cell death associated with acute MI would decrease the mortality associated with heart failure.
View Article and Find Full Text PDFIntroduction: Moderate to severe tricuspid regurgitation (TR) in the setting of acute heart failure (AHF) has been found to be associated with worse clinical outcomes. Recently, the TRI-SCORE was developed to predict clinical outcomes after isolated tricuspid surgery.
Objectives: To determine whether this score could aid in risk stratification of AHF patients with moderate-severe TR.
Introduction: The relationship between the phenotype and treatment of psoriatic arthritis (PsA) and the increased prevalence of cardiovascular comorbidities is not well studied.
Objective: To assess the prevalence of cardiovascular comorbidities in relation to the clinical phenotype and treatment of PsA.
Methods: This was a cross-sectional, real-life study.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!