Experimental study of ultraviolet erythema on subcutaneous ecchymosis in dogs

Objective:To elucidate the mechanism of ultraviolet(UV) radiation on subcutaneous ecchymosis.Methods:After replicating the subcutaneous ecchymosis models of dogs,the ecchymosis was radiated with UV erythema to observe the alteration of blood fibrinolytic system and the duration of ecchymosis absorption.Results:After UV radiation,the blood fibrinolytic system was activated,there wasn't changed without UV radiation dogs.If the UV erythema was inhibited or decreased,the ecchymosis absorption was also delayed.Conclusion:The finding shows that the mechanism of UV radiation to ecchymosis is mainly the UV erythema reaction.