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Microfluidics in Assessing Platelet Function
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Aluminum Nanoparticles Affect Human Platelet Function In Vitro.

Dominik Taterra1,2,3, Bendik Skinningsrud1,2, Sigurd Lauritzen1,2

  • 1International Evidence-Based Anatomy Working Group, 30-034 Krakow, Poland.

International Journal of Molecular Sciences
|February 11, 2023
PubMed
Summary

Small aluminum nanoparticles (Al NPs) trigger platelet aggregation, while larger ones cause unique structural changes. Monitoring Al NP levels and platelet activation is recommended for patients with orthopedic implants.

Keywords:
aluminum nanoparticlesceramic prosthesesplatelet aggregation

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Area of Science:

  • Biomaterials Science
  • Nanotoxicology
  • Hematology

Background:

  • Endoprostheses can release aluminum nanoparticles (Al NPs) into circulation.
  • The toxic effects of NPs on human platelets remain incompletely understood.
  • Platelets play a crucial role in hemostasis and thrombosis.

Purpose of the Study:

  • To investigate the impact of Al NPs on human platelet function.
  • To analyze size-dependent effects of Al NPs on platelet aggregation.
  • To explore the interaction mechanisms between Al NPs and platelets.

Main Methods:

  • Quartz crystal microbalance with dissipation (QCM-D) methodology.
  • Light transmission aggregometry.
  • Flow cytometry, optical microscopy, and transmission electron microscopy.

Main Results:

  • Al NPs induced significant platelet aggregation, particularly smaller sizes (5-50 nm).
  • A size-dependent effect was observed, with larger NPs (80 nm) showing a bridging-penetrating interaction.
  • Heterologous platelet-Al NP structures were formed, indicating complex interactions.

Conclusions:

  • Small Al NPs (5-50 nm) promote platelet aggregation.
  • Larger Al NPs (80 nm) induce distinct structural changes and interactions with platelets.
  • Clinical monitoring of NP serum levels and platelet activation is advised for patients with orthopedic implants.