Diabetes, Vol 36, Issue 3 295-299, Copyright © 1987 by American Diabetes Association
Effects of experimental diabetes, uremia, and malnutrition on wound healing
DK Yue, S McLennan, M Marsh, YW Mai, J Spaliviero, L Delbridge, T Reeve and JR Turtle
The strength of linear wounds was studied in normal and diabetic rats in
the first 8 wk after wounding. The strength of wounds from diabetic animals
was found to be reduced compared with normal controls but could be improved
by insulin treatment, especially when excellent metabolic control was
achieved. There appeared to be both quantitative and qualitative defects in
the formation of wound tissues in diabetic animals, because wound strength
was not normalized when the thinner skin of diabetic animals was taken into
consideration. This was different from the findings in rats with renal
failure or malnutrition: in these two conditions, wound strength appeared
reduced but was normalized when adjusted for skin thickness. Increased
activity of aldose reductase did not appear to be an important factor in
the impairment of wound healing in diabetes, because wound strength was not
corrected by treatment with sorbinil, an aldose reductase inhibitor. The
precise mechanism of abnormal wound strength in diabetes remains to be
studied further, but careful control of diabetes, maintenance of nutrition,
and treatment of systemic illness are important factors in the promotion of
wound healing.