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  • Title: Effect of pentoxifylline on intraperitoneal adhesions after intestinal resection in rats.
    Author: Lai HS, Chu SY, Chen Y, Wu CH, Lin LT.
    Journal: J Formos Med Assoc; 1994; 93(11-12):911-5. PubMed ID: 7633193.
    Abstract:
    Pentoxifylline, an analogue of the methylxanthine theobromine, inhibits glycosaminoglycan and collagen synthesis by dermal fibroblasts in vitro and also inhibits the proliferation of dermal fibroblasts. It may have the same effect on fibroblasts derived from postoperative adhesion bands, thus preventing postoperative adhesion formation. An animal model was developed to evaluate the effect of pentoxifylline. Twenty-four male Wistar rats were divided into four groups, and all underwent laparotomy with a 15 cm intestinal resection and reanastomosis. The intestinal serosa was scratched to induce adhesion formation. No medication was given in group 1 rats, group 2 rats received 6 mL normal saline by intraoperative peritoneal irrigation, group 3 rats received 6 mL pentoxifylline solution (1 mg/mL) by intraperitoneal irrigation and group 4 rats received both 6 mL intraoperative pentoxifylline solution (1 mg/mL) irrigation and 50 mg/kg pentoxifylline by intramuscular injection, twice a day for 14 days. All rats were sacrificed 2 weeks later. The numbers of fibrous bands at and away from the anastomotic site were recorded and scored. The score for each rat was calculated as the sum of the scores for each band. The strength and the extent of the fibrous bands were also measured and compared. The scores of adhesion bands at the anastomotic site were significantly reduced in group 3 and group 4 rats when compared with group 1 rats. However, there were no significant differences among the 4 groups in the extent and strength of adhesions at sites other than the anastomosis site.
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