Apoptotic Platelets
Apoptotic Platelets - Related Videos
09:13
Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation
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Cited by 5 •
2017
We describe a straightforward method for the isolation of washed platelets from human blood followed by agonist-induced platelet aggregation measurements by turbidimetry. As an example we apply this method for studying the aggregation response of human platelets to collagen after a pre-incubation with the Pannexin1 channel inhibitor Brilliant Blue FCF.
05:36
Analysis of Efferocytosis of Apoptotic Thymocytes by Peritoneal Macrophages
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2025
This video demonstrates a procedure for analyzing peritoneal macrophage-mediated efferocytosis of apoptotic mouse thymocytes by fluorescence microscopy.
08:59
Live Imaging of Apoptotic Cell Clearance during Drosophila Embryogenesis
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Cited by 10 •
2013
Here we describe an effective method for studying dynamics of apoptotic cell clearance in vivo. This method employs live Drosophila embryos as a powerful model for monitoring phagocytosis of apoptotic cells using specific labeling of apoptotic cells and phagocytes.
11:57
Organotypic Cerebellar Cultures: Apoptotic Challenges and Detection
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Cited by 17 •
2011
This method describes the generation of organotypic cerebellar cultures and the effect of certain apoptotic stimuli on the viability of different cerebellar cell types.
03:58
Purification and Activation of Platelets from Murine Whole Blood
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2025
In this video, we describe a protocol for purifying platelets from murine whole blood and their subsequent activation with the platelet agonist thrombin. When analyzed with flow cytometry, the purified resting platelets are characterized based on the expression of their cell-surface marker CD41, whereas purified activated platelets co-express both the surface markers CD41 and CD62P.
FAQs
Intrinsic cellular stress can disrupt the mitochondrial membrane potential, shifting the platelet toward an apoptosis-like death program. This mitochondrial change is important because it connects an internal stress signal with downstream biochemical events, including caspase activation and surface remodeling. Measuring mitochondrial status therefore helps investigators relate platelet stress to altered lifespan, hemostatic behavior, and eventual clearance.
Caspases provide a proteolytic signaling step in the response of stressed platelets. Their activation links mitochondrial disturbance to cellular changes associated with platelet removal, while also illustrating how controlled protein cleavage contributes to platelet turnover. In biochemical studies, caspase activity can therefore be examined alongside mitochondrial membrane potential and phosphatidylserine exposure rather than interpreted as an isolated event.
Phosphatidylserine exposure changes the platelet surface in a way that marks the cell for recognition and clearance. This membrane-remodeling event helps connect intracellular death signaling with removal from circulation. Its significance extends beyond cell fate: surface phosphatidylserine is also relevant to hemostasis, making apoptotic platelet research useful for examining how platelet lifespan and clot-related functions are coordinated.
A useful biochemical assessment considers several linked features rather than one marker alone: mitochondrial membrane potential, caspase activation, phosphatidylserine exposure, and evidence of recognition or clearance. Together, these observations distinguish internal stress signaling, proteolytic activity, membrane remodeling, and removal. This combined view helps researchers interpret how platelet turnover is regulated and how these processes relate to hemostasis.
The process provides a biochemical framework for studying whether altered platelet turnover contributes to reduced platelet numbers or inflammatory states. Investigators can relate mitochondrial signaling, caspase activity, surface phosphatidylserine, and clearance to changes in platelet lifespan. This approach may clarify how disrupted removal mechanisms participate in thrombocytopenia and inflammation without treating any single molecular event as the complete explanation.
Research on these cells can inform studies of cardiovascular disease by connecting platelet stress, membrane changes, and clearance with hemostatic regulation. It also supports development of platelet-based diagnostic assays or therapies, because measurable biochemical features such as mitochondrial signaling and phosphatidylserine exposure may help characterize platelet condition. The broader goal is to translate turnover mechanisms into disease-relevant measurements or interventions.