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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

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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Formation of the Platelet Plug01:22

Formation of the Platelet Plug

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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.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

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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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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

1.2K
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
1.2K
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

1.7K
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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Related Experiment Video

Updated: Nov 7, 2025

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
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Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation

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Inherited Platelet Disorders: An Updated Overview.

Verónica Palma-Barqueros1, Nuria Revilla2, Ana Sánchez1

  • 1Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CIBERER-U765, 30008 Murcia, Spain.

International Journal of Molecular Sciences
|April 30, 2021
PubMed
Summary

Inherited platelet disorders (IPDs) are rare diseases affecting platelet count or function. Genetic testing aids diagnosis and management, but clinical treatments remain limited, emphasizing the need for specialized care and future gene therapy.

Keywords:
congenital platelet disordersinherited thrombocytopeniasplatelet function disorders

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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro

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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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Area of Science:

  • Hematology
  • Genetics
  • Rare Diseases

Background:

  • Platelets are crucial for hemostasis and other vital processes.
  • Inherited Platelet Disorders (IPDs) encompass ~60 rare genetic diseases affecting platelet count or function.
  • IPDs present a variable clinical spectrum, from mild bleeding to life-threatening conditions.

Purpose of the Study:

  • To highlight the importance of early and accurate diagnosis of IPDs.
  • To emphasize the role of molecular diagnostics and genotype-phenotype correlations in managing IPDs.
  • To review current diagnostic and therapeutic approaches for IPDs.

Main Methods:

  • Review of current literature on Inherited Platelet Disorders.
  • Discussion of diagnostic advancements, particularly High Throughput Sequencing (HTS).
  • Analysis of existing and potential therapeutic strategies for IPDs.

Main Results:

  • High Throughput Sequencing (HTS) has significantly improved the genetic diagnosis of IPDs.
  • Genotype-phenotype correlations are vital for effective clinical management.
  • Current treatments for IPDs are limited, with gene therapy as a potential future option.

Conclusions:

  • Accurate diagnosis and close patient follow-up are critical for managing IPDs.
  • Molecular diagnosis is essential for personalized treatment strategies.
  • Despite diagnostic progress, therapeutic advancements for IPDs are needed, underscoring the importance of specialized care and research into novel therapies like gene therapy.