What question did this study set out to answer?

To determine whether thrombocytopenia induces endothelial ultrastructural alterations and whether plasma von Willebrand factor serves as a circulating marker of endothelial damage in a canine model.

November 28, 2017Platelets

Endothelial alterations in a canine model of immune thrombocytopenia

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Authors

DLDana N. LeVineAuburn University RCRachel E. CiancioloThe Ohio State University KLKeith E. LinderZoetis (United States)

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Implication

Controlled animal study reveals endothelial damage and elevated plasma von Willebrand factor in dogs with thrombocytopenia, indicating a mechanism for bleeding variability.

Key Points

To determine whether thrombocytopenia induces endothelial ultrastructural alterations and whether plasma von Willebrand factor serves as a circulating marker of endothelial damage in a canine model.
Thrombocytopenia was induced in healthy dogs via antiplatelet antibody infusion, while control dogs received an isotype control antibody.
Cutaneous biopsies were obtained at baseline, platelet nadir, 24 hours post-nadir, and recovery to assess capillary thickness, pinocytotic vesicles, large vacuoles, and intercellular gaps by electron microscopy.
Plasma von Willebrand factor (vWF) levels were measured across timepoints to assess correlation with ultrastructural vascular changes.
Dogs with induced immune thrombocytopenia exhibited significantly reduced pinocytotic vesicle numbers compared to controls (P = 0.0357).
The increase in plasma vWF from baseline to 24 hours post-nadir was directly correlated with the endothelial large vacuole score (R = 0.99103; P < 0.0001).

Cite This Study

LeVine et al. (2017) studied this question.

synapsesocial.com/papers/6a8578ece4c5482a294e188d https://doi.org/10.1080/09537104.2017.1378807

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Implication

Controlled animal study reveals endothelial damage and elevated plasma von Willebrand factor in dogs with thrombocytopenia, indicating a mechanism for bleeding variability.

Endothelial alterations in a canine model of immune thrombocytopenia

Discussion

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Implication

Key Points

Cite This Study

Endothelial alterations in a canine model of immune thrombocytopenia

Discussion

Member takes

Implication

Key Points

Cite This Study

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