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Related Experiment Videos

Visualization of vascular platelet aggregation by plastic embedding and light microscopy.

S Berliner1, Z Fishelson, M Ben-Bassat

  • 1Department of Internal Medicine D, Beilinson Medical Center, Tel Aviv University, Israel.

Journal of Experimental Pathology
|January 1, 1989
PubMed
Summary

Complement activation triggers platelet aggregation in mouse lungs. Plastic embedding techniques effectively visualize these intravascular platelet aggregates under light microscopy, aiding research.

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Area of Science:

  • Immunology
  • Hematology
  • Pathology

Background:

  • Platelets are implicated in inflammation and microvascular damage.
  • Standard histologic preparations hinder clear visualization of platelets within tissues.

Purpose of the Study:

  • To demonstrate platelet aggregates in pulmonary vasculature using plastic embedding.
  • To investigate the role of complement activation in platelet aggregation.
  • To assess the efficacy of plastic embedding for visualizing intravascular platelet aggregates.

Main Methods:

  • Plastic embedding technique for tissue preparation.
  • Induction of complement activation using zymosan-activated plasma (ZAP) and cobra venom factor (CVF) in mice.
  • Semiquantitative grading of platelet aggregation in excised lungs.

Related Experiment Videos

  • Comparison of platelet aggregation in C5-sufficient and C5-deficient mice.

    • Main Results:

    • Zymosan-activated plasma (ZAP) significantly increased platelet aggregation scores in mice.
    • Epsilon-aminocaproic acid modulated ZAP-induced aggregation.
    • Both C5-sufficient and C5-deficient mice showed aggregation upon zymosan injection.
    • Cobra venom factor (CVF) induced dose-dependent platelet aggregation.

    Conclusions:

    • Complement activation products mediate intrapulmonary platelet aggregation.
    • Plastic embedding is a suitable method for visualizing intravascular platelet aggregates using light microscopy.