Effect of deferoxamine-hydroxyethyl pentafraction starch on free, autogenous full-thickness skin grafts in dogs
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SUMMARY
Free, autogenous, full-thickness skin grafting was performed on 10 dogs; 5 dogs were given an iron chelator, deferoxamine-10% hydroxyethyl pentafraction starch (DEF-HES; 50 mg/kg of body weight, IV), and 5 dogs were given 10% hydroxyethyl pcntafrac-tion starch (HES) in 0.9% saline solution (5 ml/kg, iv). The percentage of viable graft on day 10 was higher, but not significantly so, in DEF-HES-treated dogs (mean ± SD, 72.6 ± 24.8%; median 76.5%) than in HES-treated dogs (mean ± SD, 46.7 ± 34.3%; median, 48.8%). A trend for a positive correlation between the percentage of viable graft (on day 10) and the percentage of original graft area (on day 28) was observed in MES- and DEF-HES-treated dogs; this trend was significant in HES-treated dogs (P = 0.012). Both groups had significant positive correlation between percentage of viable graft on day 10 and percentage of haired skin on day 28 (HES, P = 0.000002; DEF-HES. P = 0.0148). A unique finding in DEF-HES treated dogs was the consistent observation of foamy macrophages in the dermis adjacent to the grafts, in deep subcutaneous tissue below the grafts, and in normal dermis.
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