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Red Cell Flexibility and Platelet Aggregation in Patients with Chronic Obstructive Vascular Disease (COAD) and Study of Therapeutic Approaches

C.M. Ambrus

S.A. Taheri

H. Gastpar

M.M. Reddington

P. Taheri

E.A. Kahn

G.L. Schattman

L.S. Dean

R.H. Moore

The red blood cell flexibility was studied in the blood of twenty patients with severe peripheral vascular disease and twenty matched controls. Patients exhibited significantly less red cell flexibility than controls. In both groups there was an inverse relationship between age and red cell flexibility. No correlation was found between red cell flexibility and sex or smoking history. Pentoxifylline, a xanthine derivative which inhibits phosphodiesterases and platelet aggregation, was found to increase red cell flexibility. This effect of the drug was greater on red cells with impaired flexibility than on normal cells. Various prostaglandins by contrast were found to decrease red cell flexibility, this could be compensated for by pentoxifylline. Forty patients with COAD were treated intravenously with PgE₁. Significant inhibition of platelet aggregation and clinical improvement was noticed. It is suggested that combinations of PgE₁ and pentoxifylline should be explored in clinical studies.

Angiology, Vol. 35, No. 7, 418-426 (1984)
DOI: 10.1177/000331978403500704


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