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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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