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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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Structure and Function of Platelets01:18

Structure and Function of Platelets

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The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
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Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
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相关实验视频

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Microfluidics in Assessing Platelet Function
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微血管病性贫血 微血管病性贫血

Martin Bommer1, Johannes Bloehdorn1

  • 1Alb-Fils Klinikum, Department of Hematology, Oncology, Infectiuous Disease and Palliative Care Medicine, Göppingen, Germany.

Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie
|August 14, 2025
PubMed
概括

血栓式微血管病变 (TMA) 是一种危及生命的疾病,需要紧急诊断. ADAMTS13测试对于分类TMA和指导适当,及时治疗以获得更好的患者结果至关重要.

科学领域:

  • 血液学 血液学 血液学
  • 内部医学 内部医学
  • 病理生理学 病理生理学

背景情况:

  • 血栓式微血管病变 (TMA) 涵盖了诸如血液溶解性贫血,血栓缩和器官损伤等疾病,通常是由血管封闭引起的.
  • TMA是一种危及生命的医疗紧急情况,需要快速诊断工作来确定潜在原因.
  • 不同诊断可能是复杂的,特别是在孕妇患者,癌症患者,或当条件模仿TMA.

研究的目的:

  • 强调迅速诊断和分类TMA的关键重要性.
  • 强调特定诊断试验在指导TMA向治疗中的作用.
  • 讨论诊断TMA及其各种亚型的挑战.

主要方法:

  • 对于区分免疫介导的TMA (iTTP) 来说,ADAMTS13活性测试至关重要.
  • 评估ADAMTS13水平有助于区分iTTP与其他TMA形式,如溶血性尿素性综合征 (HUS) 和补充介导TMA (cmTMA).
  • 对不同TMA分类的诊断标准和治疗方法的审查.

主要成果:

  • 患有ADAMTS13活性低于10 IU/dL的患者被诊断为iTTP,需要立即治疗,例如卡普拉西祖马布.
  • 具有ADAMTS13活性超过10 IU/dL的TMA可能表明HUS,cmTMA (以前非典型的HUS) 或二次TMA,通常用补充抑制剂 (如eculizumab) 治疗.
关键词:
血溶性尿素性综合征是什么血栓性微血管病变 - - 血栓性微血管病变血栓性血栓细胞缩性紫外线的发生.

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  • 基于ADAMTS13水平和其他因素的准确分类指导了适当疗法的选择.

    • 结论:

    • 迅速识别和分类TMA对于启动救命治疗至关重要.
    • ADAMTS13测试是诊断iTTP和指导管理策略的基石.
    • 了解TMA的各种病因对于有效的患者护理和改善预后至关重要.