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Updated: May 8, 2026
10:53
Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents
Published on: July 3, 2013
Are the atrial peptides a natriuretic hormone?
European Heart Journal
|May 1, 1987
Summary
Atrial natriuretic peptides are confirmed as natriuretic hormones in humans. Their levels correlate with salt intake and fluid volume, aiding interpretation in conditions like heart failure and hypertension.
Area of Science:
- Endocrinology
- Nephrology
- Cardiovascular Physiology
Background:
- Sodium balance is crucial for regulating fluid volume.
- Atrial natriuretic peptides (ANPs) are implicated in sodium and water homeostasis.
- Previous research suggested ANPs' role, but human confirmation was needed.
Purpose of the Study:
- To confirm the natriuretic role of atrial natriuretic peptides in humans.
- To investigate the relationship between ANP plasma levels and salt intake.
- To understand the clinical relevance of ANP levels in various disease states.
Main Methods:
- Radioimmunoassay was used to measure plasma levels of atrial natriuretic peptides.
- Studies involved injecting ANPs and infusing them at low doses.
- Changes in sodium excretion were monitored in response to ANP administration and saline infusion.
Main Results:
- Injected ANPs demonstrated natriuretic effects in humans.
- Plasma ANP levels increased with higher salt intake, correlating with extracellular volume changes.
- Low-dose ANP infusion increased sodium excretion at levels comparable to saline infusion.
Conclusions:
- Atrial natriuretic peptides function as a natriuretic hormone in humans.
- ANP levels provide insights into fluid balance regulation.
- Elevated ANP levels in heart failure, renal failure, and hypertension can be better interpreted in light of these findings.
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