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相关概念视频

Disorders of Erythrocytes01:27

Disorders of Erythrocytes

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Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
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Overview of Hematopoiesis01:20

Overview of Hematopoiesis

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Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
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Erythropoiesis01:14

Erythropoiesis

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Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia,...
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Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

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The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
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The Periodic Table and Organismal Elements00:57

The Periodic Table and Organismal Elements

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Overview
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Hematopoiesis01:21

Hematopoiesis

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The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
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Author Spotlight: Developing a Point-of-Care Hemoglobin Estimation Method for Anemia Management
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[一个患有持续性贫血的孩子]

Maria Winther Gunnes1, Andreas Benneche2, Anne Grete Bechensteen3

  • 1Barne- og ungdomsklinikken, Haukeland universitetssjukehus, og, Barneavdeling for kreft- og blodsykdommer, Oslo universitetssykehus, Rikshospitalet.

Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke
|March 20, 2024
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概括
此摘要是机器生成的。

钻石-布莱克芬贫血是一种罕见的遗传性疾病,可以在儿童中呈现异常,模仿童年过渡性红细胞细胞衰竭 (TEC). 基因检测对于准确诊断和管理这些罕见的贫血病至关重要.

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Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload
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科学领域:

  • 儿科血液学 儿科血液学
  • 遗传学 遗传学 是一个
  • 罕见疾病 罕见疾病

背景情况:

  • 儿童贫血很常见,但罕见的原因可能难以诊断.
  • 儿童的过渡性红细胞质疏松症 (TEC) 是婴儿贫血的常见诊断.
  • 先天性骨髓衰竭综合征可能会出现不典型的症状,延迟诊断.

研究的目的:

  • 为了突出一例钻石-黑贫血,最初被误诊为TEC.
  • 强调先进基因测试在诊断罕见儿科贫血方面的重要性.
  • 讨论在先天性骨髓衰竭综合征中对遗传咨询的诊断挑战和影响.

主要方法:

  • 一个幼儿患有持续性贫血的案例报告.
  • 血液学参数和骨髓检查的审查.
  • 基于外体的基因面板测序用于遗传诊断.

主要成果:

  • 最初的TEC诊断是基于临床表现和实验室发现.
  • 患者后来出现了间歇性巨细胞症和网细胞衰减.
  • 外体序列测定揭示了RPL11基因的突变,证实了钻石-布莱克芬贫血.

结论:

  • 钻石 - 黑色粉丝贫血可以呈现异常特征,模仿其他疾病,如TEC.
  • 基因检测,特别是外基因组测序,对于精确诊断罕见的儿科贫血至关重要.
  • 早期和准确的诊断对于适当的管理,随访和遗传咨询至关重要.