Porphyria Educational Services
PORPHYRIA EDUCATIONAL SERVICES BULLETIN
Vol. 2 No. 9
February 27, 2000
FOCUS: Congenital erythropoietic porphyria.
Congenital erythropoietic porphyria (CEP) is one of the rarest
autosomal-recessive disorders of the porphyrin metabolism.
CEP is caused by the homozygous defect of uroporphyrinogen III
cosynthase.
High amounts of uroporphyrin I accumulate in all cells and
tissues,.
It is found that this is reflected by an increased
erythrocyte porphyrin
concentration. There is found an excretion of high
porphyrin amounts
in urine and feces.
Researchers at the University of Dusseldorf in Germany have found
that
dermal deposits of uroporphyrin frequently induce a dramatic
phototoxic
oxygen-dependent skin damage with extensive ulcerations and
mutilations.
Typical internal syptoms include splenomegaly and hemolytic
anemia.
Researchers also noted that skeletal changes such as
osteolysis and
calcifications are frequent.
Up to date 130 cases of CEP have been confirmed and
recorded.
The Dusseldorg researchers note that splenectomy and
erythrocyte
transfusions showed some beneficial effect in helping CEP
patients.
Bone marrow transplantation has been performed in
some patients. In
addition stem cell transplantation has been tried with some
patients.
Todate the best.therapy for CEP patients is the avoidance of
sunlight.