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Research Article Open access CC BY 4.0

Impact of AstraZeneca COVID-19 Vaccination on Coagulation and Gene Expression: A Molecular and Clinical Study

Erens Spiff Ekprikpo, Stella Urekweru Ken-Ezihuo, Beauty Eruchi Echonwere-uwikor, Zaccheaus Awortu Jeremiah

International Journal of Research and Reports in Hematology · pp. 111–119 · Published 23 Apr 2025

10.9734/ijr2h/2025/v8i1171

Abstract

This case-control study investigated the effects of the AstraZeneca COVID-19 vaccine on coagulation parameters in a cohort of 102 individuals, revealing a significant increase in activated partial thromboplastin time (aPTT) among vaccinated individuals (34.233±0.653 seconds vs 28.196±0.657 seconds, p<0.0001), which correlated with increased TMPRSS2 expression (r=-0.325, p=0.0202). The findings have important clinical implications, suggesting that vaccinated individuals, particularly those with underlying coagulopathies, may require closer monitoring for thrombotic events. The observed changes in aPTT and TMPRSS2 expression may have significant implications for patients with pre-existing coagulation disorders or those at risk of thrombotic events, emphasizing the need for vigilant monitoring and personalized care in vaccinated individuals, and highlighting the importance of further research to inform evidence-based guidelines for COVID-19 vaccination.

AstraZeneca COVID-19 vaccine coagulation parameters activated partial thromboplastin time (aPTT) prothrombin time (PT) ACE2 gene expression TMPRSS2 gene expression COVID-19 pathogenesis vaccination strategies thrombotic events coagulopathies patient care

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