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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

2.6K
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.
2.6K
Structure and Function of Platelets01:18

Structure and Function of Platelets

4.3K
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...
4.3K
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

10.2K
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...
10.2K
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

2.2K
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...
2.2K
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

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

1.4K
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...
1.4K
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

2.6K
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...
2.6K

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Related Experiment Video

Updated: Mar 7, 2026

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 Function Disorders (IPFDs).

Akbar Dorgalaleh, Shadi Tabibian, Morteza Shamsizadeh

    Clinical Laboratory
    |February 7, 2017
    PubMed
    Summary

    Inherited platelet function disorders (IPFDs) are challenging to diagnose. This study classifies IPFDs into four groups, aiding in timely and accurate diagnosis of these rare bleeding conditions.

    Area of Science:

    • Hematology
    • Molecular Biology
    • Genetics

    Background:

    • Inherited platelet function disorders (IPFDs) encompass a range of qualitative platelet abnormalities.
    • These disorders present with variable bleeding tendencies, from mild to life-threatening.
    • Accurate diagnosis and classification of IPFDs remain a global challenge.

    Purpose of the Study:

    • To establish a comprehensive classification system for IPFDs.
    • To elucidate the molecular underpinnings of these disorders.
    • To detail clinical presentations and provide diagnostic insights for IPFDs.

    Main Methods:

    • A systematic literature search was conducted.
    • Relevant publications were identified using targeted keywords.

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    Microfluidics in Assessing Platelet Function
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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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    Related Experiment Videos

    Last Updated: Mar 7, 2026

    Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
    04:37

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

    Published on: May 23, 2025

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    Microfluidics in Assessing Platelet Function
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    Microfluidics in Assessing Platelet Function

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    A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
    09:38

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

    Published on: February 14, 2017

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    Main Results:

    • IPFDs are categorized into four main groups: platelet glycoprotein defects, granule and secretion disorders, signaling pathway defects, and transcription-related disorders.
    • While Glanzman thrombasthenia is relatively common with severe bleeding, many IPFDs are exceedingly rare and present with mild bleeding.
    • The classification highlights the heterogeneity in clinical severity and prevalence.

    Conclusions:

    • A structured classification of IPFDs is crucial for accurate diagnosis.
    • Understanding the clinical and laboratory features of IPFDs facilitates timely identification.
    • This framework supports improved management of complex bleeding disorders.