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Abstract
Diabetes mellitus is recognized as a risk factor for compromised wound healing. This
study examines leukocyte infiltration and the appearance of tumor necrosis factor-α
(TNF) and IL-6 in wound chambers implanted in normal and streptozotocin-induced diabetic
mice. Perforated silicone wound chambers containing a strip of polyvinyl alcohol sponge
were implanted along the flanks of normal and diabetic mice. Wound fluid aspirated
from the chambers 1, 3, and 7 days following implantation was analyzed for the total
number of leukocytes and TNF and IL-6 levels. While the number of leukocytes in the
wound fluid was similar on Days 1 and 3 following implantation, there were significantly
fewer inflammatory cells in wound fluid from diabetic animals (13.8 × 106/ml) than in wound fluid from normal animals (28.5 × 106/ml) on Day 7 following implantation. TNF levels in the cell-free exudate fluid were
similar between the two groups on all days examined. IL-6 levels were similar on Days
1 and 3 following implantation between the two groups, but there was significantly
more IL-6 in wound fluid from normal animals (10,998 U/ml) than in wound fluid from
diabetic animals (2096 U/ml) on Day 7 following implantation. Histologic evaluation
of chambers 8 days following implantation revealed decreased neovascularization and
less organization of granulation tissue. These data suggest that delayed healing in
diabetes is associated with altered leukocyte infiltration and wound fluid IL-6 levels
during the late inflammatory phase of wound healing.
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Article info
Publication history
Presented at the Annual Meeting of the Association for Academic Surgery, Houston, Texas, November 14–17, 1990
Identification
Copyright
© 1991 Published by Elsevier Inc.