The pattern of lysosomal, cytosolic and plasma membrane enzymes in epidermis, dermis and suction blister fluid after ultraviolet radiation

Slightly lower lysosomal enzyme activities were found in epidermis 18 h after irradiation with middle wave ultraviolet light while the values were invariably higher in the dermis of inflamed skin. The activities of the plasma membrane and the cytosol marker enzymes were higher in normal epidermis and dermis than in inflamed skin. Higher values were also found in suction blisters raised on inflamed skin, suggesting labilization/destruction of the plasma membrane during the inflammatory process.