Intestinal alkaline phosphatase decreases intraperitoneal adhesion formation

Area of Science:

• Gastroenterology
• Surgical Innovation
• Inflammation Research

Background:

• Peritoneal damage triggers inflammation and adhesions, causing patient morbidity.
• Intestinal alkaline phosphatase (IAP) neutralizes inflammatory mediators like LPS and ATP.
• The study investigated IAP's anti-inflammatory potential in preventing postoperative adhesions.

Purpose of the Study:

• To evaluate the efficacy of Intestinal alkaline phosphatase (IAP) in mitigating postoperative adhesion formation in a murine model.
• To assess the impact of IAP on key inflammatory cytokines associated with adhesion development.

Main Methods:

• A murine model of peritoneal injury was established using musculoperitoneal buttons (MPBs) and cecal abrasion.
• IAP (5000 U) or vehicle was applied intraperitoneally post-surgery.
• Adhesion scoring and analysis of cytokine (IL-1β, TNF-α) expression were performed on postoperative days 1 and 21.

Main Results:

• IAP treatment significantly reduced overall adhesion scores compared to controls (13.2 vs. 21.5, P=0.0014).
• IAP decreased protein levels of IL-1β and TNF-α in MPBs (P<0.001).
• IAP significantly reduced IL-1β and TNF-α mRNA expression in MPBs on postoperative day 1 (P<0.007).

Conclusions:

• Intraperitoneal application of IAP effectively reduces postoperative adhesions in mice.
• IAP demonstrates significant anti-inflammatory effects, decreasing key cytokine expression.
• IAP represents a promising novel therapeutic strategy for preventing postoperative adhesions.