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Arch Dermatol. 1993 Jun;129(6):753-6.

Treatment of coumarin-induced skin necrosis with a monoclonal antibody purified protein C concentrate.

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  • 1Medizinische Klinik Innenstadt, University of Munich, Germany.


BACKGROUND AND DESIGN--Protein C is a vitamin K-dependent plasma protein that is converted to the serine protease activated protein C by the thrombin-thrombomodulin complex. Activated protein C functions as a natural anticoagulant by inactivating the cofactors of the coagulation cascade, factors Va and VIIIa. Coumarin (warfarin)-induced skin necrosis is thought to be due to a rapid elimination of protein C relative to other vitamin K-dependent factors during the initial phase of oral anticoagulation. We have used a highly purified protein C concentrate to treat a patient with acquired protein C deficiency who developed skin necrosis during the initial phase of oral anticoagulant therapy. OBSERVATIONS AND CONCLUSIONS--During protein C concentrate therapy, no further skin lesions appeared, and the healing process of necrotic areas was facilitated. Replacement therapy with protein C concentrate appears to be safe and effective as an adjunctive treatment for coumarin-induced skin necrosis.

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