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Related Concept Videos

Adrenal Gland Disorders01:27

Adrenal Gland Disorders

Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Anatomy of the Adrenal Glands01:17

Anatomy of the Adrenal Glands

The adrenal or supra-renal glands, situated above the kidneys and aligned with the twelfth rib, are paired pyramid-shaped structures crucial for the body's stress response. During stress, these glands secrete hormones vital for adaptive physiological reactions.
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct regions...
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...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
Adrenergic Receptors: ɑ Subtype01:31

Adrenergic Receptors: ɑ Subtype

Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
Adrenaline ≥ Noradrenaline >> Isoprenaline
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 C—inositol-1,4,5-trisphosphate...
Cushing Syndrome I: Introduction01:26

Cushing Syndrome I: Introduction

Cushing syndrome refers to the collection of clinical manifestations that arise when tissues are exposed to excessive amounts of cortisol or cortisol-like medications over an extended period. Cortisol, a glucocorticoid produced by the adrenal cortex, regulates metabolism, immune responses, and the body’s adaptation to stress. When its concentration remains chronically elevated, these physiological pathways become dysregulated, resulting in the characteristic features of the syndrome.Exogenous...

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Related Experiment Video

Updated: Jul 5, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

[Study on multiple aldosterone-producing adenomas].

Xiu-Yue Yu1, Chui-Ze Kong, Zhen-Hua Li

  • 1Department of Urology, First Clinical Hospital, China Medical University, Shenyang 110001, China.

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|May 15, 2008
PubMed
Summary
This summary is machine-generated.

This study on multiple adrenal aldosterone-producing adenomas (APA) found that unilateral synchronous APA requires adrenalectomy. Bilateral or asynchronous APA benefit from tumor resection, preserving adrenal tissue, with 3D-CT aiding diagnosis.

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Last Updated: Jul 5, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
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A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

Establishment of Zone-Enriched Primary Cultures from the Mouse Adrenal Cortex
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Published on: May 8, 2026

Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions
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Primary Culture of Rat Adrenocortical Cells and Assays of Steroidogenic Functions

Published on: March 12, 2019

Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Diagnostic Imaging

Context:

  • Multiple adrenal aldosterone-producing adenomas (APA) present unique diagnostic and therapeutic challenges.
  • Retrospective analysis of 18 cases admitted between October 1992 and April 2006.

Purpose:

  • To investigate the clinical experience with the diagnosis and treatment of multiple adrenal APA.
  • To evaluate surgical outcomes and the role of imaging in managing these complex cases.

Summary:

  • Adrenalectomy was performed for unilateral synchronous multiple APA.
  • Tumor resection was conducted for bilateral synchronous, bilateral metachronous, and recurrent adrenal APA, emphasizing adrenal tissue preservation.
  • Three-dimensional computed tomography (3D-CT) demonstrated significant value in diagnosing small, unilateral synchronous, and ipsilateral recurrent adrenal APA.

Impact:

  • Findings guide surgical strategies for multiple adrenal APA, differentiating between adrenalectomy and tumor resection based on adenoma presentation.
  • Highlights the importance of preserving healthy adrenal tissue to maintain adrenal function post-operatively.
  • Emphasizes the diagnostic utility of 3D-CT in identifying subtle and recurrent adrenal lesions, improving patient management.