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Related Concept Videos

Hormonal Regulation01:33

Hormonal Regulation

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.
Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
Hormonal Regulation of Blood Pressure01:17

Hormonal Regulation of Blood Pressure

Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors01:30

Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors

Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...

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Related Experiment Video

Updated: Jun 4, 2026

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells
09:29

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

Published on: March 5, 2019

Aldosterone, hypertension, and beyond.

Shiva Samavat1, Pedram Ahmadpoor, Fariba Samadian

  • 1Department of Nephrology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Iranian Journal of Kidney Diseases
|March 4, 2011
PubMed
Summary

Aldosterone, a hormone, contributes to metabolic syndrome, insulin resistance, and obesity by promoting inflammation. Mineralocorticoid receptor blockers can mitigate these effects, offering new therapeutic avenues.

Area of Science:

  • Endocrinology
  • Cardiovascular Biology
  • Metabolic Research

Background:

  • Aldosterone is a key hormone regulating water balance and blood pressure.
  • Emerging evidence links aldosterone to metabolic syndrome, insulin resistance, and obesity.
  • Aldosterone's pro-inflammatory and oxidative stress effects are increasingly recognized.

Purpose of the Study:

  • To explore the multifaceted roles of aldosterone beyond its classical functions.
  • To investigate the mechanisms underlying aldosterone's contribution to metabolic dysfunction.
  • To highlight the therapeutic potential of mineralocorticoid receptor antagonists.

Main Methods:

  • Review of current literature on aldosterone signaling pathways.
  • Analysis of aldosterone's impact on cellular and organ systems.

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Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta
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Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta

Published on: June 10, 2015

Related Experiment Videos

Last Updated: Jun 4, 2026

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells
09:29

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

Published on: March 5, 2019

Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta
08:08

Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta

Published on: June 10, 2015

  • Examination of genomic and non-genomic mechanisms of aldosterone action.

    • Main Results:

    • Aldosterone promotes inflammation and oxidative stress, contributing to metabolic syndrome.
    • It affects cardiac hypertrophy, endothelial dysfunction, podocyte injury, and fibrosis.
    • Non-genomic pathways involve SGK1, NEDD4, and K-Ras; genomic pathways involve epigenetics.

    Conclusions:

    • Aldosterone plays a significant role in metabolic and cardiovascular diseases.
    • Mineralocorticoid receptor antagonists show promise in treating aldosterone-related pathologies.
    • Targeting pathways like SGK1 presents novel therapeutic strategies.