Aldosterone
Aldosterone - Related Videos
06:08
A Novel Method: Super-selective Adrenal Venous Sampling
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Cited by 44 •
2017
'Super-selective' adrenal venous sampling (ssAVS, also called segmental adrenal venous sampling: sAVS) was performed using a micro-catheter to identify adrenal segment(s) that produce excessive amounts of hormones. The ssAVS technique was described, cases in which adrenal segmental lesion(s) were identified by ssAVS were presented, and the usefulness of ssAVS in future adrenal research was discussed.
01:33
Hormonal Regulation
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2019
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
08:57
Peptide and Protein Quantification Using Automated Immuno-MALDI (iMALDI)
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Cited by 13 •
2017
A protocol for the protein quantification in complex biological fluids using automated immuno-MALDI (iMALDI) technology is presented.
FAQs
Three major signals promote aldosterone release: angiotensin II, elevated potassium, and reduced circulating volume. Together, they link electrolyte status and circulatory conditions to adrenal hormone output. This coordinated response helps the body adjust sodium and water retention when volume is low while also responding directly to potassium changes that require renal regulation.
Once aldosterone enters kidney cells, it activates mineralocorticoid receptors, which changes the handling of key ions in the distal nephron. Sodium reabsorption increases, while potassium and hydrogen ion secretion are promoted. These coordinated effects alter the composition of tubular fluid and help connect hormone signaling with blood volume, potassium balance, and acid-base homeostasis.
Aldosterone influences acid-base status because its renal actions include promoting hydrogen ion secretion as well as sodium reabsorption and potassium secretion. The hormone therefore does more than regulate sodium and water. Its effects in the distal nephron can simultaneously shape electrolyte composition and the handling of hydrogen ions, linking mineral balance with acid-base homeostasis.
Within the renin-angiotensin-aldosterone system, angiotensin II provides a primary signal for aldosterone release. The resulting renal sodium reabsorption favors water retention, which can increase circulating volume and influence blood pressure. Studying this connection helps explain how hormonal signaling links reduced volume or related circulatory changes to kidney function and cardiovascular regulation.
Excessive aldosterone activity is associated with hyperaldosteronism, hypertension, and hypokalemia. These conditions reflect the consequences of increased mineralocorticoid signaling and altered renal ion handling. In biology and clinical research, examining this pattern helps distinguish how abnormal hormone production can affect blood pressure and potassium balance rather than treating those findings as unrelated changes.
Mineralocorticoid receptor antagonists are important because they target the receptor through which aldosterone produces its renal effects. Their use provides a way to study the contribution of aldosterone signaling to sodium handling, blood volume, blood pressure, and electrolyte disturbances. This makes receptor antagonism relevant to research on hyperaldosteronism and related mineralocorticoid disorders.