Changes in the blood endotoxin concentration after digestive surgery

Area of Science:

• Gastroenterology
• Hepatology
• Immunology

Background:

• Elevated blood endotoxin levels are associated with various digestive disorders and liver conditions.
• Understanding endotoxin dynamics and plasma inactivation capacity is crucial for managing patients with digestive diseases and liver failure.

Purpose of the Study:

• To investigate the changes in blood endotoxin concentrations in patients with digestive disorders undergoing surgery.
• To compare endotoxin levels in patients with and without liver cirrhosis.
• To assess the plasma's ability to inactivate endotoxin in patients with liver failure.

Main Methods:

• Blood endotoxin concentrations were measured in 57 patients pre- and postoperatively.
• Plasma endotoxin inactivation capacity was quantified by serial measurements.
• Correlations between endotoxin levels and clinical parameters (WBC, platelets, liver function tests, fibronectin) were analyzed.

Main Results:

• Endotoxin levels peaked one day post-surgery and returned to baseline thereafter.
• Patients with liver cirrhosis had significantly higher endotoxin levels one day after surgery compared to those without.
• A significant negative correlation was found between plasma endotoxin and fibronectin concentrations.
• Plasma from patients with liver failure demonstrated reduced endotoxin inactivation capacity.

Conclusions:

• Surgery transiently increases blood endotoxin levels in patients with digestive disorders.
• Liver cirrhosis exacerbates the postoperative endotoxin response.
• Plasma fibronectin may play a role in modulating endotoxin levels.
• Impaired plasma endotoxin inactivation is a feature of liver failure.