Related Experiment Video
Updated: Aug 3, 2026
07:31
A Model of Cardiac Remodeling Through Constriction of the Abdominal Aorta in Rats
Published on: December 2, 2016
An extra-adrenal sodium-retaining factor in congestive heart failure
1Department of Physiology, University of Missouri School of Medicine, Columbia 65212, USA.
Journal of Cardiac Failure
|March 1, 1995
Summary
Researchers are reinvestigating an unknown extra-adrenal sodium-retaining factor that contributes to edema in heart failure. New experimental models and recent discoveries in kidney function may help identify its nature and action.
Area of Science:
- Nephrology
- Cardiology
- Endocrinology
Background:
- The extra-adrenal sodium-retaining factor, identified in 1964, enhances renal tubule responsiveness to aldosterone.
- This factor is implicated in significant sodium retention, leading to edema and ascites in heart failure patients.
Purpose of the Study:
- To review evidence for the extra-adrenal sodium-retaining factor in experimental heart failure models.
- To discuss recently discovered factors influencing kidney function that may relate to this factor.
- To propose reinvestigation of the sodium-retaining factor using new experimental models.
Main Methods:
- Review of existing literature on the extra-adrenal sodium-retaining factor.
- Presentation of evidence from two dog models of experimental heart failure.
- Discussion of novel experimental models for heart failure research.
Main Results:
- Evidence supports the existence of an extra-adrenal sodium-retaining factor in heart failure.
- Several newly discovered factors (e.g., atrial natriuretic peptide, nitric oxide) may influence kidney function and mineralocorticoid responsiveness.
- Newly developed experimental models offer opportunities to study this factor.
Conclusions:
- The exact nature of the extra-adrenal sodium-retaining factor remains unknown.
- Reinvestigation is warranted given recent advances in understanding kidney function.
- Modern experimental models are suitable for studying the factor's role in heart failure.
Related Concept Videos
01:17Pathophysiology of Heart Failure
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
01:22Heart Failure Drugs: Diuretics
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
01:26Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
01:29Heart Failure II: Pathophysiology
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
01:22Heart Failure VI: Adjunct Therapies
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.