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Minerva Chirurgica 2007 August;62(4):241-8

Copyright © 2007 EDIZIONI MINERVA MEDICA

language: English

Influence of the stable protacyclin analog iloprost on the healing of colonic anastomosis in rats

Vasiliadis K. 1, Kanellos I. 1, Tsachalis T. 1, Blouhos K. 1, Zaraboukas T. 2, Koliakos G. 3, Betsis D. 1

1 Fourth Department of Surgery Medical School Aristotle University of Thessaloniki Thessaloniki, Greece 2 Department of Histopathology Medical School Aristotle University of Thessaloniki Thessaloniki, Greece 3 Department of Biochemistry Medical School Aristotle University of Thessaloniki Thessaloniki, Greece


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Aim. The aim of this study was to investigate whether iloprost injected intraperitoneally immediately after colon resection can improve anastomotic healing on the fifth and eighth postoperative days.
Methods. Forty Wistar rats were randomised into 2 equal groups. After the resectioning of a 1 cm segment of transverse colon, an end to end sutured anastomosis was generated. From the day of the operation, group 1 (control) received intraperitoneal 3 cc saline solution once daily until sacrifice, while group 2 (iloprost) received iloprost in a dose of 2 mg/kg body weight intraperitoneally once daily until sacrifice. Each group was further randomly divided into 2 equal subgroups and animals were sacrificed on the fifth (subgroup A), and eighth (subgroup B) postoperative days. After sacrifice, anastomoses were examined macroscopically and were measured for bursting pressures and tissue hydroxyproline levels while anastomotic healing process was evaluated histopathologically.
Results. None of the rats exhibited any clinical evidence of leakage and there were no instances of perianastomotic abscess or peritonitis. Bursting pressure on the fifth postoperative day was significantly higher in the iloprost group than in the control group (P<0.001), while on the eighth postoperative day, bursting pressure was higher in the iloprost group but not significantly different (P=0.165). On both the fifth and eighth postoperative days rats in the iloprost group developed significantly more marked neoangiogenesis and, in parallel with this, there was a trend showing a higher inflammatory cell infiltration.
Conclusion. The intraperitoneal administration of iloprost promoted neoangiogenesis and enhanced colonic healing on the fifth postoperative day.

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