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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

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Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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Structure and Function of Platelets01:18

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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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Formation of the Platelet Plug01:22

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The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
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Pedigree Analysis01:35

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Overview
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

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Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
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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.
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Related Experiment Video

Updated: Jan 3, 2026

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

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[How to explore… Inherited platelet disorders].

R Harkati1, P Péters2, A Gothot2

  • 1Biologie Clinique, ULiège, Belgique.

Revue Medicale De Liege
|November 16, 2019
PubMed
Summary
This summary is machine-generated.

Inherited platelet disorders (IPD) are rare, under-diagnosed conditions. Suspect IPD in chronic thrombocytopenia unresponsive to standard treatments with a family history, requiring specialized tests for diagnosis.

Keywords:
Flow cytometryMolecular biologyPlatelet aggregation testPlatelet function diseaseThrombocytopenia

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Last Updated: Jan 3, 2026

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
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Area of Science:

  • Hematology
  • Genetics
  • Rare Diseases

Background:

  • Inherited platelet disorders (IPD) represent a group of rare diseases.
  • Diagnosis is challenging due to the need for complex biological assays.
  • IPD are likely under-diagnosed in the general population.

Framework:

  • Clinical suspicion for IPD arises with chronic thrombocytopenia resistant to IVIG and steroids.
  • A family history of thrombocytopenia is a key indicator.
  • Syndromic thrombocytopenia may be suggested by family surveys and specific clinical signs.

Implementation:

  • Diagnostic confirmation relies on specialized biological assays.
  • These assays include platelet aggregation studies, flow cytometry, and electron microscopy.
  • Further investigations involve platelet secretion assays, karyotyping, and molecular biology.

Implications:

  • Early and accurate diagnosis of IPD is crucial for appropriate patient management.
  • Recognizing IPD can prevent diagnostic delays and improve patient outcomes.
  • Understanding the diagnostic pathway aids clinicians in identifying these rare conditions.