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関連する概念動画

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

Hormones of the Adrenal Glands

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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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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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Anatomy of the Adrenal Glands01:17

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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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Smooth Endoplasmic Reticulum01:21

Smooth Endoplasmic Reticulum

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Smooth endoplasmic reticulum or smooth ER is a sub-organelle with specialized functions in animal cells and plant cells. It is often associated with the tubule morphology of the endoplasmic reticulum.
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...
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Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
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A Novel Method: Super-selective Adrenal Venous Sampling
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生まれながらの腎上腺増殖

Matthias K Auer1, Anna Nordenström2, Svetlana Lajic2

  • 1Medizinische Klinik IV, Klinikum der Universität München, Munich, Germany.

Lancet (London, England)
|December 12, 2022
PubMed
まとめ

生まれながらの腎上腺増殖 (CAH) は,ホルモン産生に影響する遺伝的疾患である. 生存率は改善していますが 長期的な合併症の管理と 新しい治療法の開発は依然として重要な課題です

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科学分野:

  • 内分泌学
  • 遺伝学
  • 小児科

背景:

  • 先天性腎上腺増殖 (CAH) は,腎上腺のステロイド生成における酵素欠乏から生じる自己相性後退性疾患を含む.
  • ステロイド21-ヒドロキシラーゼ (21OH) 欠乏症は,CAHの最も一般的な原因であり,古典的 (重症) および非古典的 (軽症) 形態があります.
  • クラシックなCAHは46,XXの新生児で腎上腺の危機と異常な生殖器を呈し,非クラシックな形態はヒルシュティズムや不妊症として現れます.

研究 の 目的:

  • ステロイド21-ヒドロキシラーゼ欠乏症による先天性副腎増殖 (CAH) の現在の理解を要約します.
  • 新生児の生存における進歩と長期的な管理における持続的な課題を強調する.
  • CAHの新たな治療戦略を紹介する.

主な方法:

  • 生まれながらの副腎増殖 (CAH) とステロイド21-ヒドロキシラーゼ欠乏症に関する既存の文献のレビュー.
  • 治療効果と患者のアウトカムに関する過去のデータの分析
  • 新しい治療方法に関する現在の研究を調査する.

主要な成果:

  • 新生児のCAH生存率は,ホルモン置換療法とスクリーニングにより著しく改善しました.
  • 長期にわたる合併症は持続し,成長,発達,代謝,心血管の健康,そして生殖力に影響します.
  • 非古典的なCAH形態はより一般的で,主にヒルスチズムや生殖能力の問題を抱えた女性に影響します.

結論:

  • 生存率が向上したにもかかわらず,CAHの管理は複雑であり,長期的な健康への影響を及ぼします.
  • 新しい治療法は生理学的ホルモンリズムを回復し,副腎のハイパーアンドロゲニズムを減らすことを目的としています.
  • CAHの管理を最適化し,患者の生活の質を改善するために,さらなる研究が不可欠です.