Decreased serum prohepcidin concentration in patients with polycythemia vera.
OBJECTIVE
Iron deficiency is a common complication in patients with polycythemia vera (PV). Hepcidin is a principal regulator of iron homeostasis. The aim of our study was to assess prohepcidin, a hepcidin precursor, and other iron status parameters in the serum of PV patients.


METHODS
The study was performed in 60 patients (F/M 26/34) aged 38~84 (66+/-10) years. The control group consisted of 20 healthy volunteers, age and sex matched. The following parameters were determined in blood serum samples: prohepcidin concentration, iron content, unsaturated iron binding capacity (UIBC), total iron binding capacity (TIBC), transferrin saturation (TfS), and concentrations of ferritin and soluble transferrin receptor (sTfR).


RESULTS
All PV patients showed significantly lower levels of prohepcidin, higher levels of sTfR and TIBC compared to the control group. 40% of the patients from the study group showed concentrations of ferritin below the normal range and significantly lower levels of serum iron and TfS, and significantly higher levels of sTfR, UIBC and TIBC in comparison with the rest of the study group. In this group of patients, prohepcidin concentrations were significantly lower than those in other patients.


CONCLUSIONS
The results indicate that PV patients suffer from iron metabolism disorders. The decreased serum level of prohepcidin in PV patients may be a result of iron deficiency.
Kwapisz
Justyna
J
Department of Pathophysiology, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, Poland.
Zekanowska
Ewa
E
Jasiniewska
Joanna
J
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D023181:Antimicrobial Cationic Peptides / Q000097:blood*; D016022:Case-Control Studies; D005260:Female; D005293:Ferritins / Q000097:blood; D064451:Hepcidins; D006706:Homeostasis; D006801:Humans; D007501:Iron / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D011087:Polycythemia Vera / Q000097:blood*; D011498:Protein Precursors / Q000097:blood*
D023181:Antimicrobial Cationic Peptides; D064451:Hepcidins; D011498:Protein Precursors; D005293:Ferritins; D007501:Iron