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  • Title: Auto-cross-linked hyaluronic acid gel does not reduce intra-abdominal adhesions or abscess formation in a rat model of peritonitis.
    Author: Sikkink CJ, de Man B, Bleichrodt RP, van Goor H.
    Journal: J Surg Res; 2006 Dec; 136(2):255-9. PubMed ID: 17059836.
    Abstract:
    BACKGROUND: Prevention of adhesion and abscess formation would decrease mortality and morbidity after peritonitis. In this study the effect of a new anti-adhesive, auto-cross-linked hyaluronic acid polysaccharide (ACP) gel, on adhesion and abscess formation was studied in a rat peritonitis model. MATERIALS AND METHODS: In experiment 1, bacterial peritonitis was induced in 24 Wistar rats, using a cecal ligation and puncture model. Animals were randomized to receive 4 mL ACP gel (4%) or 4 mL phosphate buffered saline (PBS). After 2 weeks animals were killed and adhesions and abscesses were scored. In experiment 2, 72 rats underwent the same procedure but were randomized to receive 2 mL ACP gel, 4 mL ACP gel, or 4 mL PBS. After 1 and 3 weeks, respectively, half of the animals in each group were killed and adhesions and abscesses were scored. RESULTS: The median total adhesion score was 12 (range, 3-20) in the ACP group and was 9 (range, 6-12) in the PBS group (not significant) in experiment 1. 91% of rats in the ACP group developed abscesses, versus 90% in the control group. There were no significant differences in abscess size or number of abscesses. In experiment 2, total adhesion scores in the 2 mL ACP group, 4 mL ACP group, and PBS group were 4 (range, 2-20), 6 (range, 1-11), and 6 (range, 1-18), respectively, (not significant) after 1 week and 3.5 (range, 1-8), 5 (range, 2-15), and 4 (range, 0-9), respectively, (not significant) after 3 weeks. All rats in the 2 mL ACP group and the PBS group and 83% of the 4 mL ACP group had developed abscesses after 1 week. After 3 weeks these percentages were 80, 75, and 73, respectively. There were no significant differences in size or number of abscesses between groups both after 1 and 3 weeks. CONCLUSION: ACP does not reduce adhesion and abscess formation in a rat peritonitis model.
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