Acute pancreatitis induces a transient hypercoagulable state in murine models

Area of Science:

• Coagulation science
• Pancreatology
• Thrombosis research

Background:

• Venous thromboembolism (VTE) risk is elevated in acute pancreatitis (AP), though not well-studied.
• Hypercoagulable states contribute to VTE, but their role in AP requires further elucidation.

Purpose of the Study:

• To characterize the hypercoagulable state in AP using thromboelastography (TEG).
• To assess the utility of TEG as a point-of-care test for AP-related coagulation changes.

Main Methods:

• AP was induced in mice using L-arginine and caerulein; TEG was performed on native samples.
• Platelet aggregation, circulating tissue factor (TF), and VTE in a murine model were assessed.
• Human AP patient blood samples were analyzed using TEG.

Main Results:

• Mice with AP showed increased maximum amplitude (MA) and coagulation index (CI) via TEG, indicating hypercoagulability.
• Hypercoagulability peaked at 24 hours post-induction and normalized by 72 hours.
• Increased platelet aggregation, elevated TF, and enhanced clot formation were observed in AP models.
• Over two-thirds of human AP patients exhibited elevated MA and CI, confirming hypercoagulability.

Conclusions:

• AP induces a transient hypercoagulable state in mice, detectable by TEG.
• Correlative evidence suggests hypercoagulability in human AP.
• Further research is needed to link TEG-derived coagulation measures to VTE incidence in AP.