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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...
Cohesins02:20

Cohesins

Cohesin protein complexes are a molecular glue that holds two sister chromatids together. They play an important role both in mitosis and meiosis. In mitosis, all cohesin complexes present on the chromosomes are removed before the start of the anaphase stage.
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of homologous...
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...
Condensins02:15

Condensins

Condensins are large protein complexes that use ATP to fuel the assembly of chromosomes during mitosis. They transform the tangled, shapeless mass of post-interphase DNA into individualized chromosomes by compacting, organizing, and segregating chromosomal DNA.
The plant and animal cells contain two types of condensin complexes—condensin I and condensin II. Both complexes have five subunits: two SMC (Structural Maintenance of Chromosomes) subunits, a kleisin subunit, and two HEAT-repeat...
Condensins02:15

Condensins

Condensins are large protein complexes that use ATP to fuel the assembly of chromosomes during mitosis. They transform the tangled, shapeless mass of post-interphase DNA into individualized chromosomes by compacting, organizing, and segregating chromosomal DNA.
The plant and animal cells contain two types of condensin complexes—condensin I and condensin II. Both complexes have five subunits: two SMC (Structural Maintenance of Chromosomes) subunits, a kleisin subunit, and two HEAT-repeat...
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: Jun 27, 2026

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling
09:08

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling

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[Conn's syndrome].

E Born-Frontsberg1, M Quinkler

  • 1Klinische Endokrinologie, Charité Univeristätsmedizin Berlin, Campus Mitte, Berlin.

Der Internist
|December 23, 2008
PubMed
Summary
This summary is machine-generated.

Primary hyperaldosteronism (PHA), a common cause of hypertension, affects millions. Early screening via aldosterone-renin ratio and targeted treatments like surgery or medication improve patient outcomes.

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Area of Science:

  • Endocrinology
  • Cardiology
  • Nephrology

Context:

  • Primary hyperaldosteronism (PHA) is the most common secondary cause of hypertension, affecting 8-10% of hypertensive individuals.
  • An estimated 2 to 2.5 million people in Germany suffer from PHA.
  • Current antihypertensive medications must be considered during screening.

Purpose:

  • To outline the diagnostic and treatment strategies for primary hyperaldosteronism.
  • To emphasize the importance of early screening and accurate diagnosis for effective management.

Summary:

  • Screening for PHA involves measuring the morning aldosterone-renin ratio, with confirmatory tests for suspicious results.
  • Adrenal imaging (CT/MRI) and adrenal venous sampling aid in subtype investigation.
  • Treatment options include adrenalectomy for aldosterone-producing adenomas and mineralocorticoid receptor antagonists for bilateral hyperplasia.

Impact:

  • Improved diagnostic accuracy for PHA.
  • Personalized treatment approaches based on PHA subtypes.
  • Potential reduction in hypertension-related complications through timely intervention.