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June 6, 2026Cardiovascular Research

Hypoxia suppresses platelet activity through GPVI downregulation but paradoxically enhances arterial thrombosis via elevated vWF

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Authors

VJVishwanath JhaJKJae-Sung KimMAMuteen Ahmed

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Overview

Randomized trial examines how hypoxia affects platelet function and thrombosis risk in mice, suggesting new therapeutic avenues.

Key Points

  • This research aims to clarify the effects of hypoxia on platelet function and the paradoxical increase in arterial thrombosis.
  • Mice exposed to graded normobaric hypoxia (8% O2) for 6 days to assess platelet activation and aggregation.
  • Platelet function measured using various agonists, with downregulation of GPVI evaluated by mass spectrometry.
  • Plasma von Willebrand factor levels assessed in hypoxic conditions to explore implications for thrombus formation.
  • Platelets from hypoxic mice exhibit reduced activation and aggregation, especially after GPVI stimulation.
  • Despite GPVI downregulation, hypoxic mice show increased arterial thrombosis and shorter tail bleeding times.
  • Circulating von Willebrand factor levels are significantly elevated in hypoxic mice, driving enhanced thrombus formation.

Cite This Study

Jha et al. (2026) studied this question.

synapsesocial.com/papers/6a23ba6871a5da9775e76216https://doi.org/10.1093/cvr/cvag123
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Upregulation of coagulation pathway and enhanced platelet activity in hypoxia-exposed rat blood2026
  2. 2Thrombocytopathy leading to impaired in vivo haemostasis and thrombosis in platelet type von Willebrand disease2016 · 17 citations
  3. 3HIF-1α/ADPGK-driven glycolytic reprogramming provokes platelet hyperactivation by fueling RHOA lactylation2026
  4. 4Differential Role of Glycoprotein VI in Mouse and Human Thrombus Progression and Stability2020 · 10 citations
  5. 5Partial downregulation of platelet glycoprotein VI by low affinity antibodies confers sustained and safe antithrombotic protection2026 · 1 citations