Influence of pentoxifylline on erythrocyte deformability in peripheral occlusive arterial disease

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Abstract
Impaired red cell deformability has been found in patients suffering from chronic peripheral vascular disorders, the implication being that microcirculatory blood flow is hindered and tissue hypoxaemia is aggravated. Measurement of erythrocyte deformability by a standard filtration technique for whole blood was carried out in 40 young healthy persons, in 25 untreated patients with peripheral occlusive arterial disease and in 25 patients with matching vascular disease, before and after a 6-weeks' oral treatment with 400 mg pentoxifylline 4-times daily. The filtration rates were significantly lower in the patient groups compared to those of healthy volunteers. After the oral administration of pentoxifylline, a significant increase in filtration rates was observed pointing to an improvement in erythrocyte deformability. The findings suggest that by improving erythrocyte deformability pentoxifylline positively influences the microcirculatory blood fluidity, an important factor for efficient therapy in peripheral arterial occlusive disease.

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