[Case report on therapy with granulocyte stimulating factor in diabetic foot]

Several pathogenetic factors such as peripheral neuropathy, vasculopathy and infection are responsible for the development of diabetic foot ulcerations. An important factor contributing to the high infection risk in diabetic patients is a defect in neutrophil granulocytes. Deficiencies in neutrophil chemotaxis, phagocytosis and respiratory burst activity with the decrease of the super- and peroxids are known to be associated with diabetes. Granulocyte-colony stimulating factor (G-CSF) increases the release of neutrophils from the bone marrow and improves neutrophil function. A 78-year old patient with non-insulin-dependent diabetes presented with ulcerations of both big toes and a malum perforans on the right sole. He also had generalized arteriosclerosis as well as a polyneuropathy with a dry foot and typical foot deformation as well as decreased in sensitivity. Intensive local care for 35 days led to no improvement of the ulcerations. Then G-CSF (Neupogen) was administered in a total dose of 165 million IU over 11 days; the daily dose varied between 15-30 million IU depending on the absolute leucocyte count. In addition 500 mg of oral ciprofloxacin (Ciproxin) was given b.i.d. This treatment led to a significant improvement of the lesions. Within 11 days cost analysis suggests G-CSF may be a cost-effective addition to antimicrobial therapy in diabetic foot infection.