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Year : 2013  |  Volume : 4  |  Issue : 4  |  Page : 149-152

Increased IgE level in Nigerian sickle cell disease children: Implication for severity of allergic reactions

1 Department of Chemical Pathology and Immunology Unit, University of Ibadan, Ibadan, Nigeria
2 Department of Paediatrics, Lagos State University Teaching Hospital, Lagos, Nigeria
3 Department of Haematology, College of Medicine, University of Ibadan, Ibadan, Nigeria

Correspondence Address:
Arinola O Ganiyu
Department of Chemical Pathology and Immunology Unit, College of Medicine, University of Ibadan, Ibadan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1658-5127.127901

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Background: Susceptibility of sickle cell disease subjects to various infectious agents is on the increase, but information relating SCD to allergic condition is scarce. Hence, assessment of immunoglobulin status in SCD children may provide useful information to improve management of SCD children. Objectives: To determine the levels of immunoglobulin classes (IgG, IgA, IgM, and IgE) in Nigerian HbSS children below 5 years of age compared with sex- and age-matched HbAA children. Materials and Methods: Blood samples were collected from a total of 45 children less than 5 years of age who were recruited into the study as follows: 26 HbSS and 19 HbAA subjects for the estimation of serum immunoglobulin levels using enzyme-linked immunosorbent assay (ELISA) techniques and determination of genotype using electrophoresis technique. Results: IgG concentration was nonsignificantly higher (P = 0.997) in HbSS children (1022.56 ± 148.97 ng/ml) compared to HbAA children (933.68 ± 106.10 ng/ml). IgA (P = 0.906) and IgM (P = 0.986) concentrations were nonsignificantly lower in HbSS children (255.07 ± 133.71 ng/ml) compared to HbAA children. IgE was significantly higher (P = 0.000***) in HbSS (108.67 ± 69.22 IU/ml) compared to HbAA (24.51 ± 17.58 IU/ml) children. Conclusion: SCD children in steady state have adequate levels of Ig classes. Non-specific elevation of IgE levels may be a factor of inflammatory response in SCD children, and this may be proposed for reduced allergic reaction among SCD children.

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