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The gut microbiome and thromboembolism.

Rida Abid Hasan1, Andrew Y Koh2, Ayesha Zia1

  • 1Department of Pediatrics, Division of Hematology/Oncology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America.

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The gut microbiome influences thrombosis risk. Imbalances in gut bacteria, like increased Enterobacteriaceae, and metabolites such as TMAO, contribute to blood clot formation and cardiovascular disease.

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Area of Science:

  • Microbiology
  • Immunology
  • Cardiovascular Science

Background:

  • The gut microbiome significantly impacts inflammatory conditions.
  • Its role in thromboembolism pathogenesis requires further elucidation.
  • Dysbiosis, an imbalance in gut bacteria, is linked to increased venous thromboembolism (VTE) risk.

Purpose of the Study:

  • To review current evidence connecting the gut microbiome to arterial and venous thrombosis.
  • To explore mechanisms by which gut bacteria and their metabolites influence hypercoagulability.

Main Methods:

  • Literature review of studies investigating the gut microbiome and thrombosis.
  • Analysis of mechanisms involving bacterial products like lipopolysaccharides (LPS) and metabolites like trimethylamine-N-oxide (TMAO).

Main Results:

  • Increased Enterobacteriaceae and decreased commensal anaerobic bacteria characterize dysbiosis in VTE patients.
  • Bacterial lipopolysaccharides (LPS) activate endothelial cells and platelets, promoting coagulation.
  • Trimethylamine-N-oxide (TMAO) induces platelet hyperreactivity and thrombus formation, linked to cardiovascular disease.

Conclusions:

  • Gut microbiome modulation targeting LPS and TMAO presents a potential therapeutic strategy.
  • Altering the gut microbiome may offer an innovative approach to reduce thrombosis risk.