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 (Zn2+-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 Zn2+-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 Zn2+-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 Zn2+-SCMC group, with the incidence significantly lower in the Zn2+-SCMC group (P < 0.001). Both agents prevented intraperitoneal adhesions by promoting the repair of the abdominal serosa.Conclusions: Administration of Zn2+-SCMC was more effective in preventing intraperitoneal adhesions than HA.
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