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- W1995510708 abstract "Summary Several investigators have demonstrated that red blood cell (RBC) deformability decreases progressively with increasing cell density and proposed that reduction in deformability plays a role in the senescence process of normal RBCs. Transient erythroblastopenia of childhood (TEC) results from temporary cessation of erythropoiesis. Since no new RBCs are produced for some time, the circulating RBCs are relatively old. RBS density (phthalate-oil method) and RBC deformability (RBC elongation in a counter-rotating rheoscope) were studied in seven children with TEC and in 10 control children. The mean values of MCHC, RBC density and RBC deformation were not significantly different between TEC and control children. Compared to controls, the frequency distribution of RBC density in TEC was slightly shifted to higher values. The percentage of RBCs with extremely low densities (< 1.090 g/ml) was 0.9 ± 1.2% in the patients and 5.6 ± 2.3% in the controls (P < 0.001). The percentage of RBCs with high density (> 1.106 g/ml) was 6.4 ± 2.1% in the patients and 4.9 ± 1.8% in the controls (P > 0.10). The reduction of RBCs with low density in TEC suggests that RBCs with low density are relatievly young. Since the percentage of RBCs with high density increased only slightly in TEC, we conclude that only a fraction of dense RBCs is old. In TEC, the frequency distribution of RBC elongation was slightly shifted to lower values. 5% of the RBCs studied in the control children had RBC elongation values above 0.39 (TEC 1.2%) and 5% had elongation values below 0.16 (TEC 6.7%). Thus, only a small fraction of highly deformable RBCs was diminished in TEC. These data suggest that a decrease in deformability is not a significant part of the normal ageing process of human RBCs." @default.
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- W1995510708 date "1993-01-01" @default.
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- W1995510708 title "Age dependency of red blood cell deformability and density: studies in transient erythroblastopenia of childhood" @default.
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- W1995510708 doi "https://doi.org/10.1111/j.1365-2141.1993.tb04642.x" @default.
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