Saliva-Induced Clotting Captures Streptococci: Novel Roles for Coagulation and Fibrinolysis in Host Defense and Immune Evasion

Research output: Contribution to journalArticle


Streptococcal pharyngitis is among the most common bacterial infections, but the molecular mechanisms involved remain poorly understood. Here we investigate the interactions among three major players in streptococcal pharyngitis: streptococci, plasma, and saliva. We find that saliva activates the plasma coagulation system through both the extrinsic and the intrinsic pathways, entrapping the bacteria in fibrin clots. The bacteria escape the clots by activating host plasminogen. Our results identify a potential function for the intrinsic pathway of coagulation in host defense and a corresponding role for fibrinolysis in streptococcal immune evasion.


External organisations
  • Georgia Institute of Technology
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Infectious Medicine


  • Journal Article
Original languageEnglish
Pages (from-to)2813-23
Number of pages11
JournalInfection and Immunity
Issue number10
Publication statusPublished - 2016 Oct
Publication categoryResearch