title: Hematologic profile and lymphocyte subpopulations in hemoglobin SC disease: comparison with hemoglobin SS and black controls. The Transfusion Safety Study Group.
abstract: Compared with subjects with homozygous SS disease (Hb SS), persons with hemoglobin SC (Hb SC) are known to have a more gradual loss of splenic function, a lower incidence of bacterial infections, and fewer end-organ failures. We studied hematological indices and lymphocyte subpopulations of 27 Hb SC subjects and compared them with 173 Hb SS patients and 131 black controls. Hb SC patients had higher hemoglobin levels than Hb SS subjects, lower total leukocyte, granulocyte, monocyte, and lymphocyte counts. Platelets decreased with age but not significantly, instead of increasing as among Hb SS patients. Mononuclear cells were generally similar to controls with the exception of CD8+HLA-DR+ counts resembling Hb SS. Hematologic changes in Hb SC are limited to moderate granulocytosis in children and adults, mild monocytosis in adults, and increased activation of just one lymphocyte subset among those measured.
authors: Department of Pediatrics, University of Southern California, School of Medicine, Los Angeles, California 90032, USA.
authors: W Y
authors: WY
authors: Wong
authors: Y
authors: Y
authors: Zhou
authors: E A
authors: EA
authors: Operskalski
authors: J
authors: J
authors: Hassett
authors: D R
authors: DR
authors: Powars
authors: J W
authors: JW
authors: Mosley
mesh_terms: D000293:Adolescent; D044383:Black People; D015704:CD4 Antigens / Q000032:analysis; D016827:CD8 Antigens / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D006684:HLA-DR Antigens / Q000032:analysis; D006450:Hemoglobin SC Disease / Q000097:blood*; D006451:Hemoglobin, Sickle / Q000032:analysis*; D006801:Humans; D007223:Infant; D007958:Leukocyte Count; D016131:Lymphocyte Subsets / Q000276:immunology / Q000473:pathology*; D012016:Reference Values
chemical_list: D015704:CD4 Antigens; D016827:CD8 Antigens; D006684:HLA-DR Antigens; D006451:Hemoglobin, Sickle