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Related Concept Videos

Adrenal Gland Disorders01:27

Adrenal Gland Disorders

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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.
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...
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Hormones of the Adrenal Glands01:31

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Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
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Anatomy of the Adrenal Glands01:17

Anatomy of the Adrenal Glands

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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...
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Hypothalamic-Pituitary Axis01:37

Hypothalamic-Pituitary Axis

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The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
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Adrenergic Agonists: Therapeutic Uses01:30

Adrenergic Agonists: Therapeutic Uses

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Adrenergic agonists have diverse therapeutic uses across various medical conditions and emergencies.
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and...
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Physiological Foundation of Stress01:24

Physiological Foundation of Stress

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Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
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Updated: Sep 24, 2025

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

Rajeev Kumar1, W S Wassif2

  • 1Diabetes and Endocrinology, Bedfordshire Hospitals NHS Foundation Trust, Bedford, UK Rajeev.Kumar@bedfordhospital.nhs.uk.

Journal of Clinical Pathology
|May 9, 2022
PubMed
Summary
This summary is machine-generated.

Adrenal insufficiency (AI) is a condition of inadequate adrenal hormone production. Current treatments improve quality of life but do not mimic natural cortisol rhythms, with experimental therapies under investigation.

Keywords:
adrenal glandsaldosteroneendocrine system diseasesendocrinology

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Area of Science:

  • Endocrinology
  • Internal Medicine

Background:

  • Adrenal insufficiency (AI), described by Thomas Addison in 1855, involves insufficient adrenal hormone production.
  • Historically fatal, AI's prognosis improved with cortisone discovery in the 1940s.
  • Diagnosis involves identifying low cortisol secretion, but delays are common, leading to acute adrenal crisis.

Purpose of the Study:

  • To review the current understanding and management of adrenal insufficiency.
  • To highlight the limitations of existing treatments and the need for improved therapies.
  • To discuss emerging experimental approaches for AI treatment.

Main Methods:

  • Review of historical and current literature on adrenal insufficiency.
  • Analysis of diagnostic criteria and common causes, including glucocorticoid withdrawal.
  • Examination of current management variations and future therapeutic strategies.

Main Results:

  • Sudden withdrawal from chronic glucocorticoid therapy is the most frequent cause of AI.
  • Significant variation exists in AI management across Europe.
  • Existing cortisol replacement regimens do not fully replicate physiological cortisol rhythms.

Conclusions:

  • Adrenal insufficiency remains a condition without a cure.
  • Current treatments enhance patient quality of life but fail to mimic natural cortisol patterns.
  • Experimental therapies like adrenocortical tissue allografts and stem cell therapy show promise but require further research.