Zn 2+-SCMC versus HA for preventing intraperitoneal adhesions: A rat model study

Abstract

Background: Intraperitoneal adhesion is a serious surgical postoperative complication. Using a rat model, we compared the effectiveness of intraperitoneally administered zinc-modified sodium carboxymethyl cellulose (Zn 2+-SCMC) and hyaluronic acid (HA) in preventing postoperative intraperitoneal adhesions. Materials and Methods: Peritoneal adhesions were induced in 120 Wistar rats by scraping the cecal mucosa. The rats were randomized into a no treatment group (n = 40) or into a treatment group in which 3 ml of HA (n = 40) or Zn 2+-SCMC (n = 40) was administered intraperitoneally before the abdominal wall was closed. Following sacrifice two weeks later, the intraperitoneal adhesions were scored and tissues were examined histologically using HE staining. Results: Eight animals died, five in the untreated group (mortality rate, 12.5%), two in the HA group (mortality rate, 5.0%) and one in the Zn 2+-SCMC group (mortality rate, 2.5%). Relative to the untreated group, the incidence of intraperitoneal adhesions was 77.5% in the HA and 48.7% in the Zn 2+-SCMC group, with the incidence significantly lower in the Zn 2+-SCMC group (P < 0.001). Both agents prevented intraperitoneal adhesions by promoting the repair of the abdominal serosa. Conclusions: Administration of Zn 2+-SCMC was more effective in preventing intraperitoneal adhesions than HA. © Ivyspring International Publisher.