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[The thrombocyte membrane].

E F Lüscher, P Massini

    Bulletin Der Schweizerischen Akademie Der Medizinischen Wissenschaften
    |December 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    The thrombocyte membrane exhibits unique morphology and responds to diverse stimuli by rearranging its components. This process involves calcium ions, crucial for shape change, release reactions, and contractile activity, with all membrane alterations being reversible.

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    Platelets and cardiovascular research: an introduction.

    Experientia·1988

    Area of Science:

    • Platelet biology
    • Cell membrane dynamics
    • Signal transduction

    Context:

    • Thrombocytes (platelets) possess a unique membrane structure with deep invaginations.
    • Platelet membranes are highly responsive to a wide array of external stimuli, including proteases, collagen, immune complexes, and various small molecules.
    • Stimulation triggers significant membrane rearrangements, exposing previously internal components on the cell surface.

    Purpose:

    • To elucidate the intricate mechanisms governing thrombocyte membrane response to stimulation.
    • To detail the role of calcium ions in mediating platelet activation processes.
    • To investigate the reversible nature of platelet membrane alterations following activation.

    Summary:

    • Platelet membrane stimulation leads to morphological changes, aggregation, and release reactions, involving internal calcium ion release and subsequent influx.

    Related Experiment Videos

  • Calcium ions are pivotal in platelet shape change, microtubule depolymerization, triggering the release reaction (potentially involving prostaglandins), and activating the contractile system.
  • Following stimulation, the platelet plasma membrane becomes permeable to calcium, allowing extracellular influx, and importantly, these membrane changes and calcium levels are reversible.

    • Impact:

    • Provides a deeper understanding of platelet activation pathways crucial for hemostasis and thrombosis.
    • Highlights the critical role of calcium signaling in platelet function.
    • Establishes the reversible nature of platelet membrane responses, offering insights into potential therapeutic interventions.