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HPB Surgery
Volume 11 (2000), Issue 5, Pages 311-318
http://dx.doi.org/10.1155/2000/82905

The Impairment of Wound Healing Process is Correlated With Abnormalities of TNF-α Production by Peritoneal Exudate Cells in Obstructive Jaundiced Rats

1First Clinic of Surgery, Wrocław, Poland
2Department of Biochemistry, Medical University of Wrocław, Wrocław, Poland
3Institute of Immunology and Experimental, Therapy of Polish Academy of Sciences, Wrocław, Poland
4Department of Pathology, Medical University of Wrocław, Wrocław, Poland
5First Clinic of Surgery, Medical University in Wrocław, Poniatowski Str. 2, Wrocław 50-326, Poland

Received 18 December 1998; Accepted 10 April 1999

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The wound healing process and production of tumour necrosis factor alpha (TNF-α) by peritoneal cells of 7-day and 14-day obstructive jaundice (OJ) and sham-operated rats were investigated. In the study the skin wound breaking strength was measured, In addition such histological and biochemical parameters as fibroblast and endothelial cell proliferation, inflammatory cell infiltration and hydroxyproline content were evaluated in polyurethane sponge discs implanted subcutaneously into rats. TNF-α production by peritoneal exudate cells (PEC), both spontaneous and lipopolysaccharide (LPS)- induced was determined by a bioassay. In OJ rats the process of both early as well as late phase of healing was impaired. The breaking strength of skin wound was decreased, the fibroblast and endothelial cell proliferation and collagen deposition, as well as hydroxyproline content were diminished. In 7 day OJ the numbers of inflammatory cells in the implants were lowered with a subsequent slight increase on day 14 of OJ. The spontaneous and LPS induced TNF- α production by PEC were significantly higher in 7 day OJ as compared with sham-operated controls. On day 14 of OJ the LPS-induced TNF-α level was, in contrast, much lower and did not differ much from the spontaneous TNF-α production. We conclude that the impairment of wound healing in OJ results from disturbances in functioning of the immune system caused by systemic endotoxaemia.