Platelet-leukocyte Interactions
Platelet-leukocyte Interactions - Related Videos
05:12
Intravital Microscopy of Leukocyte-endothelial and Platelet-leukocyte Interactions in Mesenterial Veins in Mice
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Cited by 11 •
2015
This simplified application of intravital microscopy of mesentery veins in mice can be used in different models of inflammation to observe leukocyte-endothelial and platelet-leukocyte interactions.
08:14
Characterization of Leukocyte-platelet Rich Fibrin, A Novel Biomaterial
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Cited by 38 •
2015
Leucocyte-Platelet Rich Fibrin (L-PRF) represents an FDA cleared preparation of autologous platelet concentrates that possesses unique fibrin architecture, enriched platelets and abundant growth factors. Here, we present a protocol for chair-side generation of L-PRF as well as evaluate its mechanical properties including uniaxial testing and suture retention strength testing.
11:40
Bioenergetics and the Oxidative Burst: Protocols for the Isolation and Evaluation of Human Leukocytes and Platelets
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Cited by 74 •
2014
Blood leukocytes and platelets can be used as a marker of overall bioenergetic health of an individual and so have the potential to monitor pathological processes and the impact of treatments. Here we describe a method to isolate and measure mitochondrial function and the oxidative burst in these cells.
03:54
A Laminar Flow-Based Assay to Study the Interactions Between Leukocytes and Endothelial Cells
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2025
This video demonstrates a laminar flow-based assay to characterize the interaction of leukocytes and cellular partners such as endothelial cells. This method provides dynamic insights into adhesion, deadhesion, and transmigration of leukocytes when perfused over an intact and confluent layer of vascular cells.
11:18
Real-time Imaging of Heterotypic Platelet-neutrophil Interactions on the Activated Endothelium During Vascular Inflammation and Thrombus Formation in Live Mice
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Cited by 29 •
2013
Here we report an experimental technique of fluorescence intravital microscopy to visualize heterotypic platelet-neutrophil interactions on the activated endothelium during vascular inflammation and thrombus formation in live mice. This microscopic technology will be valuable to study the molecular mechanism of vascular disease and to test pharmacologic agents under pathophysiological conditions.
FAQs
Activation exposes P-selectin on the platelet surface, allowing platelets to bind receptors on leukocytes. This contact creates a physical and signaling connection between the two cell types, which can promote leukocyte recruitment and influence immune activity at affected vascular sites. The mechanism helps connect platelet responses associated with hemostasis to inflammatory and host-defense processes.
Platelet-leukocyte contact can stimulate leukocytes and associated cells to release cytokines, chemokines, and antimicrobial factors. Cytokines and chemokines help coordinate inflammation and recruit additional immune cells, while antimicrobial factors may contribute to pathogen containment. The resulting response can be protective during infection but may also contribute to vascular inflammation or tissue injury when inflammation becomes excessive.
These interactions can influence both thrombosis and inflammation rather than acting within only one biological system. Their effects on vascular inflammation, immune-cell recruitment, and platelet-associated responses may help explain how inflammatory conditions produce vascular complications. Examining this connection provides a framework for understanding thromboinflammatory disorders in which clot-related and immune-mediated processes occur together.
During infection, platelet-leukocyte activity may support pathogen containment through leukocyte recruitment and antimicrobial-factor release. The same inflammatory signaling can become harmful if it intensifies vascular inflammation or damages surrounding tissue. Studying these interactions therefore helps researchers examine when coordinated immune activity is beneficial and when it may contribute to infection-related or inflammatory pathology.
Platelet-leukocyte aggregates provide a way to examine how platelet activation is associated with immune-cell engagement in disease or infection. Their study can help clarify mechanisms involving vascular inflammation, thrombosis, pathogen containment, and tissue injury. Aggregate-related findings may also support evaluation of these interactions as potential biomarkers of disease processes or treatment-relevant biological activity.
They are particularly relevant when researchers investigate sepsis, inflammatory disorders, or thromboinflammatory conditions. In these settings, platelet activation and leukocyte responses may jointly shape inflammation, host defense, vascular changes, and tissue damage. Focusing on their interaction can add information that would be missed by examining platelet or leukocyte activity separately, especially when infection and vascular inflammation overlap.