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Related Concept Videos

Hormonal Regulation01:33

Hormonal Regulation

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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.
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Adrenergic Receptors: ɑ Subtype01:31

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Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
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α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
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Adrenal Gland Disorders01:27

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Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
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Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors01:30

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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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Antihypertensive Drugs: Angiotensin II Receptor Blockers01:30

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In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
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Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

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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...
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Related Experiment Video

Updated: May 5, 2026

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
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The relationship between the expression of ACE2 in peripheral blood and the prognosis of patients with adrenal

Junyong Li1, Jian Li1, Fei Chen1

  • 1Department of Urology, Renmin Hospital, Hubei University of Medicine, No. 39 Chaoyang Middle Road, Maojian District, Hubei, 442000, Shiyan, China.

Hormones (Athens, Greece)
|March 28, 2025
PubMed
Summary

High Angiotensin-Converting Enzyme 2 (ACE2) expression in peripheral blood is linked to better outcomes in patients with adrenal adenoma and hypertension. This suggests ACE2 plays a protective role against hypertension complications.

Keywords:
ACE2Adrenal adenoma with hypertensionHormonesPrognosis

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Area of Science:

  • Endocrinology
  • Cardiovascular Medicine
  • Nephrology

Background:

  • Adrenal adenoma is a common cause of secondary hypertension.
  • The role of Angiotensin-Converting Enzyme 2 (ACE2) in adrenal adenoma-associated hypertension is not fully understood.

Purpose of the Study:

  • To investigate the association between peripheral blood ACE2 expression levels and the prognosis of patients diagnosed with adrenal adenoma and hypertension.
  • To determine if ACE2 expression can serve as a predictive marker for hypertension-related complications.

Main Methods:

  • Recruited 80 patients with adrenal adenoma and hypertension.
  • Categorized patients into high (n=26) and low (n=54) ACE2 expression groups.
  • Analyzed clinical data, blood pressure, serum markers, hormone levels, and frequency of hypertensive episodes.
  • Utilized Pearson correlation and Cox regression for prognostic analysis.

Main Results:

  • High ACE2 expression correlated with lower blood pressure, creatinine, and hormone levels, alongside higher serum potassium.
  • The high ACE2 group exhibited a significantly lower incidence and frequency of hypertensive episodes with palpitations over 3 months.
  • Low ACE2 expression was identified as an independent risk factor for poor prognosis in these patients.

Conclusions:

  • Elevated ACE2 expression in peripheral blood is associated with improved cardiovascular and renal function in patients with adrenal adenoma and hypertension.
  • ACE2 expression appears to have a protective role, mitigating hypertension-related complications.
  • ACE2 levels may serve as a valuable prognostic biomarker in this patient population.