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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...
Hormones of the Adrenal Glands01:31

Hormones of the Adrenal Glands

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 corticosterone...
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...
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...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.

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Related Experiment Video

Updated: Jul 10, 2026

Establishment of Zone-Enriched Primary Cultures from the Mouse Adrenal Cortex
07:43

Establishment of Zone-Enriched Primary Cultures from the Mouse Adrenal Cortex

Published on: May 8, 2026

Genetic disorders involving adrenal development.

Lin Lin1, Bruno Ferraz-de-Souza, John C Achermann

  • 1Developmental Endocrinology Research Group, Clinical and Molecular Genetics Unit, UCL Institute of Child Health, University College London, London, UK.

Endocrine Development
|November 8, 2007
PubMed
Summary

Recent advances reveal genetic causes of childhood adrenal failure, including adrenal hypoplasia. Understanding these genetic underpinnings is crucial for diagnosis and management of adrenal disorders.

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Area of Science:

  • Pediatric endocrinology
  • Human genetics
  • Molecular biology

Background:

  • Childhood adrenal failure, including adrenal hypoplasia, has complex genetic origins.
  • Advances in genetic research have significantly improved understanding of these disorders over the past decade.

Purpose of the Study:

  • To review the genetic aetiology of adrenal failure presenting in infancy or childhood.
  • To categorize adrenal hypoplasia based on its underlying genetic cause and affected pathways.

Main Methods:

  • Literature review of genetic studies on adrenal failure.
  • Classification of adrenal hypoplasia into secondary, ACTH resistance, and primary forms based on genetic defects.

Main Results:

  • Identified genetic causes for secondary adrenal hypoplasia (panhypopituitarism, ACTH synthesis/processing defects).
  • Detailed genetic basis for ACTH resistance syndromes (MC2R, MRAP, AAAS).
  • Characterized primary adrenal hypoplasia, including X-linked DAX1 mutations, recessive forms, and IMAGe syndrome.

Conclusions:

  • Molecular definition of adrenal hypoplasia is vital for clinical management, genetic counseling, and presymptomatic diagnosis.
  • These genetic insights offer valuable understanding of human adrenal development mechanisms.