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The coagulation system in melioidosis: from pathogenesis to new treatment strategies
Liesbeth Martine Kager1, Tom van der Poll, Willem Joost Wiersinga
1Academic Medical Center, Center for Experimental and Molecular Medicine (CEMM), University of Amsterdam, Meibergdreef 9, Room G2-130,1105 AZ, Amsterdam, The Netherlands.
Abstract:
Melioidosis, caused by the Gram-negative bacterium Burkholderia pseudomallei, is a dreadful disease common in South-East Asia and Northern Australia and is characterized by chronic suppurative lesions and pneumonia. Melioidosis may evolve into severe sepsis with multi-organ failure with high mortalities, despite proper antibiotic therapy. Besides activation of a strong pro-inflammatory host response, the coagulation system plays an important role during melioidosis, which is thought to be host-protective. In particular, a procoagulant state together with downregulation of anticoagulant pathways and activation of fibrinolysis are present, all closely interrelated with parameters of inflammation. This review presents an overview of recent studies in which the role of coagulation, anti-coagulation and fibrinolysis during melioidosis was investigated both in patients and in experimental settings.
Insights
Melioidosis, a severe bacterial infection, involves complex interactions with the body's clotting system. Understanding coagulation, anticoagulation, and fibrinolysis is crucial for managing this disease and improving patient outcomes.
Area of Science:
- Infectious Diseases
- Hematology
- Immunology
Background:
- Melioidosis is a serious infection caused by Burkholderia pseudomallei, prevalent in Southeast Asia and Northern Australia.
- It can lead to severe sepsis, multi-organ failure, and high mortality rates, even with antibiotic treatment.
Purpose of the Study:
- To review recent research on the role of the coagulation system in melioidosis.
- To explore the interplay between coagulation, anticoagulation, fibrinolysis, and inflammation in patients and experimental models.
Main Methods:
- Review of recent studies investigating coagulation pathways in melioidosis.
- Analysis of data from both human patients and experimental settings.
Main Results:
- Melioidosis involves a pro-inflammatory response and significant alterations in the coagulation system.
- A procoagulant state, reduced anticoagulant activity, and activated fibrinolysis are observed.
- These hemostatic changes are closely linked to inflammatory markers.
Conclusions:
- The coagulation system plays a significant, potentially host-protective role in melioidosis.
- Further investigation into these complex hemostatic and inflammatory interactions is warranted for therapeutic development.
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