Abstract
To study the nature of numerous inclusion bodies seen in red cells from patients with sickle cell disease (Hb SS), we have prepared red cell ghosts free of oxyhemoglobin and analyzed them by spectrophotometric and heme extraction methods. The absorption spectrum in the visible region of the ghost suspensions was typical of hemichromes. The spectrum was similar to that of denatured hemoglobin repared by treatment of oxyhemoglobin S with mechanical shaking or heat. Similar treatment of cells containing only normal hemoglobin (Hb AA) showed a very small amount of denatured hemoglobin, approximately one-fifth of the amount in Hb SS cells. The amount of denatured hemoglobin determined after solution of membrane with 2.5% sodium dodecyl sulfate was 0.158+/-0.070% (1 SD) of the total cellular heme in Hb SS patients. In controls, the amount was 0.030+/-0.016%. Persons with Hb AA and reticulocytosis did not have an elevated amount of membrane-associated heme. In patients with hereditary spherocytosis and autoimmune hemolytic anemia, denatured stromal hemoglobin was normal or slightly elevated before and after splenectomy. The increased amount of denatured hemoglobin in Hb SS red cells may be related to the instability of sickle oxyhemoglobin.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
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