PMID- 16804312 OWN - NLM STAT- MEDLINE DCOM- 20060913 LR - 20061130 IS - 0014-312X (Print) IS - 0014-312X (Linking) VI - 38 IP - 3 DP - 2006 TI - Effects of unfractionated heparin and low-molecular-weight heparin on colonic anastomoses in the presence of experimental peritonitis. PG - 353-7 AB - BACKGROUND: We aimed at investigating the effects of unfractionated heparin (UFH) and low-molecular-weight heparin (LMWH) on the healing process of colonic anastomoses in the presence of peritonitis which is known to adversely affect the healing process. STUDY DESIGN: Three groups of Wistar albino rats (n = 15 in each group) with experimental fecal peritonitis were studied. A 1-cm colonic segment was resected, and an end-to-end anastomosis was performed. The control group (group 1) was given no treatment; group 2 animals received 50 IU/kg s.c. UFH twice a day, and group 3 rats received LMWH at a dose of 1.5 mg/kg daily for 7 days postoperatively. Relaparotomy was done on day 7 in the surviving rats. The rats were sacrificed by resection of the colonic segment. The anastomosis bursting pressures were measured and the tissue samples from anastomosis lines were histopathologically examined. RESULTS: The bursting pressures were significantly higher in UFH and LMWH groups as compared with the controls (p = 0.021 and p < 0.001, respectively), while there was no statistically significant difference between UFH and LMWH groups. Positive bacterial culture results were more common in controls (90%) than in the other two groups (p = 0.029 and p = 0.002, respectively). Also the polymorphonuclear leukocyte counts were higher (p = 0.005) and the fibrin formation more common (p = 0.007) in the controls. On the other hand, the number of fibroblasts was higher (p = 0.002) and collagen formation and revascularization more frequent (p = 0.001 and p = 0.001, respectively) in the UFH and LMWH groups. CONCLUSION: UFH and LMWH may have positive effects on the healing process of colonic anastomoses in the presence of peritonitis. FAU - Gunerhan, Yusuf AU - Gunerhan Y AD - 2nd Surgical Clinics, Haydarpasa Numune Education and Research Hospital, Istanbul, Turkey. ygunerhan@superonline.com FAU - Koksal, Neset AU - Koksal N FAU - Gul, Ozden AU - Gul O FAU - Uzun, Mehmet Ali AU - Uzun MA FAU - Gunes, Pembegul AU - Gunes P FAU - Adaleti, Riza AU - Adaleti R LA - eng PT - Journal Article DEP - 20060628 PL - Switzerland TA - Eur Surg Res JT - European surgical research. Europaische chirurgische Forschung. Recherches chirurgicales europeennes JID - 0174752 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9007-34-5 (Collagen) SB - IM MH - Anastomosis, Surgical MH - Animals MH - Anticoagulants/*pharmacology MH - Collagen/metabolism MH - Colon/microbiology/pathology/*surgery MH - Feces MH - Fibroblasts/metabolism/pathology MH - Heparin, Low-Molecular-Weight/*pharmacology MH - Male MH - Peritonitis/*drug therapy/pathology/physiopathology MH - Pressure MH - Rats MH - Rats, Wistar MH - Wound Healing/*drug effects EDAT- 2006/06/29 09:00 MHDA- 2006/09/14 09:00 CRDT- 2006/06/29 09:00 PHST- 2006/03/03 00:00 [received] PHST- 2006/05/15 00:00 [accepted] PHST- 2006/06/29 09:00 [pubmed] PHST- 2006/09/14 09:00 [medline] PHST- 2006/06/29 09:00 [entrez] AID - 94257 [pii] AID - 10.1159/000094257 [doi] PST - ppublish SO - Eur Surg Res. 2006;38(3):353-7. doi: 10.1159/000094257. Epub 2006 Jun 28.