The new biology of aldosterone.
The study demonstrated that aldosterone's actions extend beyond traditional epithelial targets, influencing cardiovascular health and contributing to hypertension and cardiovascular damage.
Electrocortin
Aldosterone is a steroid hormone classified as a mineralocorticoid, primarily produced in the adrenal cortex of the adrenal glands. Researchers primarily study aldosterone for its critical role in regulating blood pressure and fluid balance, as well as its involvement in cardiovascular and kidney diseases. Key findings indicate that excess aldosterone can lead to inflammation, fibrosis, and dysfunction in the heart and kidneys, contributing to conditions such as heart failure and chronic kidney disease. Additionally, studies suggest that aldosterone's effects may occur through both genomic and non-genomic mechanisms, complicating treatment approaches. Current research is focused on developing aldosterone synthase inhibitors and mineralocorticoid receptor antagonists to mitigate the hormone's adverse effects, highlighting its significant clinical relevance in managing cardiorenal health.
Aldosterone, also known as electrocortin, is an endogenous steroid hormone produced in the zona glomerulosa of the adrenal cortex. It belongs to the class of mineralocorticoids, which are a subset of corticosteroids. Aldosterone plays a crucial role in maintaining blood pressure and electrolyte balance by regulating sodium and potassium levels in the kidneys. Researchers have extensively studied its involvement in cardiovascular and renal diseases, particularly its contribution to inflammation, fibrosis, and dysfunction in the heart and kidneys. Aldosterone acts primarily through the mineralocorticoid receptor (MR), influencing both genomic and non-genomic pathways. The genomic action involves modulation of gene expression, while non-genomic effects are rapid and involve signaling pathways independent of gene transcription. Pharmacokinetically, aldosterone has a short circulating half-life, and its metabolism involves conversion to inactive metabolites in the liver. It is not typically administered as a therapeutic agent due to its endogenous nature. Clinically, the focus is on modulating its effects using MR antagonists or aldosterone synthase inhibitors in conditions like heart failure and chronic kidney disease. These interventions aim to mitigate the adverse effects of aldosterone excess, such as hypertension and cardiac remodeling. Regulatory approaches focus on the use of these antagonists rather than aldosterone itself, given its endogenous production and role in physiological processes.
| Formel | C21H28O5 |
| Molekulargewicht | 360.4g/mol |
| CAS-Nummer | 52-39-1 |
| PubChem CID | 5839 |
Aldosterone acts on the mineralocorticoid receptor (MR), triggering a cascade that influences sodium and potassium balance in the kidneys. This activation leads to increased sodium reabsorption and potassium excretion, contributing to blood pressure regulation and fluid homeostasis. Additionally, aldosterone affects non-epithelial MRs in the heart, promoting fibrosis and hypertrophy through both genomic and non-genomic pathways.
Aldosterone primarily acts through the mineralocorticoid receptor (MR), activating genomic signaling pathways that lead to increased sodium reabsorption and potassium excretion in the kidneys, thereby regulating blood pressure and fluid balance. Additionally, aldosterone exerts nongenomic effects via MR-independent mechanisms, contributing to inflammation, fibrosis, and oxidative stress in cardiac and renal tissues, potentially through the activation of NADPH oxidase 2 (NOX2) and the generation of reactive oxygen species (ROS). The full spectrum of aldosterone's actions, particularly its nongenomic pathways, remains incompletely understood.
Circulating half-life ~20 minutes
Poor bioavailability due to first-pass metabolism
As an endogenous hormone, aldosterone is not typically administered exogenously.
Temperature
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Light
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Notes
As an endogenous hormone, specific storage conditions are not applicable.
Aldosterone is poorly soluble in water but soluble in ethanol and organic solvents.
🇩🇪DE
Data limited
🇺🇸US
Aldosterone itself is not a scheduled substance; focus is on MR antagonists which are prescription medications.
🇦🇺AU
Data limited
🇬🇧UK
Data limited
Legal status information is provided for general reference only and may not reflect the most current regulatory changes. Always verify with official government sources before making any decisions.
Current evidence is limited regarding the long-term effects and safety of aldosterone synthase inhibitors (ASIs) in diverse populations, particularly in patients with treatment-resistant hypertension and heart failure. Further research is needed to clarify the mechanisms underlying aldosterone's nongenomic effects, especially its impact on cardiac mitochondria and the role of oxidative stress in these processes. Additionally, larger randomized controlled trials are necessary to establish the clinical significance of aldosterone breakthrough phenomena and the optimal combination therapies involving mineralocorticoid receptor antagonists and ASIs.
2,670
Total Citations
11
Human/RCT
3.0
Avg. Influence
2025
Latest
The study demonstrated that aldosterone's actions extend beyond traditional epithelial targets, influencing cardiovascular health and contributing to hypertension and cardiovascular damage.
Researchers observed that aldosterone production is tightly regulated by physiological agonists and can lead to disorders of excess when imbalances occur in its synthesis.
The study demonstrated that aldosterone exerts harmful effects on cardiovascular tissues through local production and mineralocorticoid receptor-mediated pathways, particularly in high-salt environments.
The study demonstrated that aldosterone escape occurs in up to 40% of congestive heart failure patients, correlating with increased cardiovascular event risks and adverse cardiac remodeling.
The review indicated that while aldosterone is a key regulator of potassium excretion, its kaliuretic action is primarily significant at elevated levels, with additional mechanisms potentially influencing potassium homeostasis.
The study demonstrated that aldosterone exerts extrarenal effects, including profibrotic and proinflammatory actions in various tissues, contributing to cardiovascular diseases and metabolic syndrome.
The study demonstrated that aldosterone secretion declines with age, affecting urinary and plasma aldosterone levels in individuals over 50 years compared to younger subjects.
The study demonstrated that aldosterone regulates sodium reabsorption in renal cells through both short- and long-term mechanisms involving epithelial sodium channels.
The review indicated that aldosterone can directly damage organs independent of blood pressure, emphasizing the importance of plasma aldosterone levels in relation to salt status.
Researchers observed that elevated aldosterone levels, even within the normal range, are associated with increased blood pressure and target organ damage, highlighting its role in hypertension.
2
Total Trials
81
Total Enrolled
NHS Greater Glasgow and Clyde
41
2007
Change in Left Ventricular Ejection Fraction by Magnetic Resonance Imaging (MRI)%
Centre Hospitalier Universitaire Dijon
40
2017
Variation in doses of noradrenaline
Log cycles, set reminders and visualize serum levels.
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