The association Between Serum Peroxiredoxin 2 and Iron Overload in
Pediatric Patients with Beta Thalassemia: Single center study
Abstract
Background: Oxidative stress is fundamental in initiating
pathophysiological mechanisms leading to premature hemolysis resulting
in iron overload in patients with beta thalassemia. Peroxiredoxin 2
(Prdx2) is one of the crucial cytoprotective and antioxidant systems
that play a key role against oxidation. Our aim was to investigate serum
Prdx2 levels in children with beta-thalassemia and to explore its
possible relations with iron overload. Methods: The patients were
divided into two groups: beta thalassemia major (BTM) group (n=40) and
beta thalassemia intermedia (BTI) group (n=20). To compare serum Prdx2
and iron status parameters levels, a control group (n=20) was include in
the study. Serum Prdx2 levels were determined by enzyme linked
immunosorbent assay technique. Serum levels of iron and ferritin were
measured using automated chemistry analyzer and electrochemiluminescence
immunoassay respectively. Results: Serum Prdx2 concentrations in
thalassemia major patients were significantly lower than those in
thalassemia intermedia patients (P= 0.026); and Prdx2 concentrations in
thalassemia intermedia patients were significantly lower than those in
control group (P<0.001). In both thalassemia major and
intermedia groups, serum Prdx2 concentration was positively correlated
with serum iron (r = 0.558, P=0.002; r = 0.718, P=0.004, respectively)
and ferritin levels (r = 0.422, P=0.007; r = 0.550, P=0.012,
respectively). Conclusions: Our results demonstrate the positive
association between Prdx2 and iron overload in thalassaemia patients.
These findings may suggest unconventional therapeutic approach to
control consequences of iron overload through modification of Prx2
activity.