Icodextrin reduces postoperative adhesion formation in rats without affecting peritoneal metastasis

Area of Science:

• Peritoneal surgery
• Oncologic surgery
• Adhesion formation

Background:

• Peritoneal trauma triggers mechanisms leading to postoperative adhesions and potentially intra-abdominal tumor recurrence.
• Icodextrin, a glucose polymer, offers prolonged "hydroflotation" in the peritoneal cavity, reducing adhesion formation.
• The study investigated icodextrin's efficacy in preventing adhesions and its impact on peritoneal metastasis.

Purpose of the Study:

• To evaluate the adhesion-preventing properties of icodextrin.
• To assess the effect of icodextrin on peritoneal metastasis in a rat model.

Main Methods:

• Utilized reproducible rat models of peritoneal trauma for semiquantitative scoring of adhesion formation and tumor load.
• Compared outcomes between groups treated with 7.5% icodextrin, RPMI (placebo), and no instillate (controls).
• Induced tumor load using the CC531 colon carcinoma cell line in a separate peritoneal trauma model.

Main Results:

• Icodextrin treatment resulted in a 51% reduction in postoperative adhesion formation (P < .001).
• Peroperative intra-abdominal icodextrin did not influence intraperitoneal tumor cell adhesion or growth in the tested model.
• No promotion of tumor recurrence was observed with icodextrin treatment.

Conclusions:

• 7.5% icodextrin solution effectively reduces postoperative adhesions.
• Icodextrin demonstrates safety in oncologic surgery by not promoting tumor recurrence.
• Icodextrin may be a useful adjunct in surgical procedures involving the peritoneum.