Abstract
Protoporphyria is a disorder that usually has cutaneous symptoms. Only in a few cases liver disease develops, invariably progressing to cirrhosis and liver failure. A case of a patient who suffered from photosensitivity as a result of protoporphyria since the age of 2 is described. At age 33, she first presented with cholestatic hepatitis. At age 40, liver failure developed requiring liver transplantation. Quantitative cytofluorometry proved to be a quick and simple method in the follow-up of her erythrocyte protoporphyrin levels before, during, and after transplantation. Fluorescence correlated well with the protoporphyrin levels obtained by high-performance liquid chromatography (r = 0.98), a comparably cumbersome and complicated method for the determination of protoporphyrin. In addition, single cell analysis enabled us to follow the effects of transfusion therapy on protoporphyrin levels of the patient's own erythrocytes, which has not been possible by previous methods. Thus, cytofluorometry might prove to be elegant and useful for screening and future studies on therapy and pathophysiology of protoporphyria.
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