This study examined if a series of epidermal growth factor (EGF) local infiltrations can enhance the healing process of complicated diabetic wounds. Twenty-nine in-hospital patients with diabetic neuropathic or ischaemic lesions with high risk of amputation were treated in a non controlled pilot study conducted at the National Institute of Angiology, Havana. Lesions, classified as Wagner's grade 3 or 4, included ulcers > or = 20 cm2 for > or = 25 days or amputation residual bases > or = 30 cm2 for > or = 15 days, healing refractory despite comprehensive wound care. EGF (25 microg) intralesional infiltrations (approximately 250 microl of a 25 microg/ml solution/injection point) were performed thrice weekly up to the eighth week. Wound closure was monitored during the treatment and recurrence examined for a year following discharge from hospital. Eighty-six per cent of the patients treated showed a productive granulation at infiltration session 8. Histological examination at this point indicated a substantial wound matrix transformation, granulation tissue cell repopulation and angiogenesis. Of the 29 patients treated, amputation was prevented in 17 (58.6%) of them who completed 24 infiltration sessions. They averaged 71.1 +/- 18.3% of reepithelisation during a mean in-hospital period of 66.5 +/- 4.9 days. Wound recurrence after 1 year of follow-up appeared in only one patient. Preliminary evidences suggest that EGF intralesional infiltrations may be effective in reducing diabetic lower limb amputation.
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