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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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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.
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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Routine Screening Method for Microparticles in Platelet Transfusions
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Platelet-Derived Microparticles and Autoimmune Diseases.

Xiaoshuai Li1, Qiushi Wang1

  • 1Department of Blood Transfusion, Shengjing Hospital of China Medical University, Shenyang 110801, China.

International Journal of Molecular Sciences
|June 28, 2023
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Platelet-derived microparticles (PMPs) are key in cell communication and immune responses. This review explores PMPs

Keywords:
autoimmune diagnosisautoimmune pathogenesisautoimmune treatmentmicroparticlesplatelet-derived microparticles

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Area of Science:

  • Immunology
  • Cell Biology
  • Hematology

Background:

  • Extracellular microparticles facilitate intercellular communication.
  • Platelets, crucial for hemostasis and inflammation, release platelet-derived microparticles (PMPs) upon activation.
  • PMPs contain various biomolecules including lipids, proteins, and nucleic acids, mediating cell-to-cell information exchange.

Purpose of the Study:

  • To review recent findings on platelet-derived microparticles.
  • To elucidate the role of PMPs in the pathogenesis of immune diseases.
  • To assess the potential of PMPs as diagnostic and prognostic markers in autoimmune conditions.

Main Methods:

  • Literature review of current research on platelet-derived microparticles.
  • Analysis of studies investigating PMP involvement in immune disease pathogenesis.
  • Evaluation of PMPs as biomarkers for disease monitoring and treatment prognosis.

Main Results:

  • Platelet-derived microparticles play a significant role in the pathogenesis of various immune diseases.
  • Circulating PMP levels are altered in autoimmune conditions such as rheumatoid arthritis, systemic lupus erythematosus, antiphospholipid antibody syndrome, and Sjogren's syndrome.
  • PMPs show potential as biomarkers for monitoring disease progression and treatment efficacy.

Conclusions:

  • Platelet-derived microparticles are implicated in the development and progression of immune-mediated disorders.
  • PMPs represent promising diagnostic and prognostic indicators for a range of autoimmune diseases.
  • Further research into PMPs could lead to improved therapeutic strategies and patient management in immunology.