Abstract:
OBJECTIVE:To correlate the clinical and hematological features of β-globin gene haplotypes with the oxidative stress status in pediatric patients with sickle cell disease (SCD). METHODS:A total of 95 patients with SCD and 40 healthy children were studied. The β-globin cluster, plasma lipid peroxidation (LPO) and plasma nitrite plus nitrate (NOx), and erythrocyte content of glutathione (GSH) and glutathione disulfide (GSSG), and glutathione peroxidase (GPx), reductase (GRd), and superoxide dismutase (SOD) activities were measured. RESULTS:Plasma LPO (P < 0.001) and NOx (P < 0.05) were significantly higher in patients than in controls. In erythrocytes of patients with SCD, the activities of GRd (P < 0.001) and SOD (P < 0.05) were lower, and the GSSG/GSH ratio (P < 0.001) and GPx activity (P < 0.001) were higher than in controls. High LPO levels and low SOD plus GRd activities were associated with increased severity of clinical manifestations, which correspond mainly to patients with Bantu and Benin haplotypes. LPO levels were reduced in patients with high fetal hemoglobin (HbF) levels, whereas the NOx levels and GRd activity tended to increase in this group. CONCLUSION:Our results detected an important oxidative stress in patients with SCD and suggest that at least three redox markers, i.e., LPO, GRd, and SOD, were related with their clinical outcomes. Moreover, a relationship between high HbF and low LPO, and high HbF and high GRd activity and NOx levels were found.
journal_name
Eur J Haematoljournal_title
European journal of haematologyauthors
Rusanova I,Escames G,Cossio G,de Borace RG,Moreno B,Chahboune M,López LC,Díez T,Acuña-Castroviejo Ddoi
10.1111/j.1600-0609.2010.01528.xsubject
Has Abstractpub_date
2010-12-01 00:00:00pages
529-37issue
6eissn
0902-4441issn
1600-0609journal_volume
85pub_type
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