Remote Pancreatic Response to Severe Polytrauma Correlates With Clinical Outcome

Area of Science:

• Trauma Pathophysiology
• Systemic Inflammation
• Remote Organ Response

Background:

• Direct pancreatic trauma leads to severe complications, including infection, organ failure, and mortality.
• The pancreas's role as a secondary target or remote organ in systemic injury is poorly understood.

Purpose of the Study:

• To investigate the pancreas's response to severe trauma, even when not directly injured.
• To explore the pancreas's contribution to systemic injury and its clinical relevance in polytrauma patients.

Main Methods:

• Utilized a murine model of multiple trauma and hemorrhagic shock, sparing the pancreas from direct injury.
• Assessed systemic/local inflammation, pancreatic damage, enzyme activity (pancreatic lipase, Pnlip), and proteomic profiles.
• Conducted a post hoc analysis of polytrauma patients to correlate pancreatic enzyme levels with clinical parameters.

Main Results:

• Severe trauma induced systemic inflammation and elevated pancreatic lipase (Pnlip) in mice, with some showing pancreatic edema and increased MMP activity.
• Proteomic analysis in mice revealed inflammatory and cellular stress pathways in pancreatic tissue.
• Polytrauma patients exhibited elevated plasma pancreatic lipase (PNLIP) and trypsin early post-trauma, correlating with injury severity, inflammation, coagulopathy, endotheliopathy, organ failure, and ICU stay.

Conclusions:

• The pancreas acts as a novel remote responder to severe tissue trauma, independent of direct injury.
• This pancreatic response may exacerbate systemic injury, offering potential clinical implications for trauma management.
• Further research is needed to elucidate the mechanisms of remote pancreatic enzyme release and confirm its causal link to clinical outcomes.