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  • Title: Erythrocytosis in spontaneously hypertensive rats.
    Author: Pavlović-Kentera V, Basara N, Jerkić M, Biljanović-Paunović L, Clemons GK, Milenković P, Susić D.
    Journal: Exp Hematol; 1988 Dec; 16(11):950-3. PubMed ID: 3181346.
    Abstract:
    Spontaneously hypertensive rats (SH) with an increased number of red blood cells (RBC), microcytosis, and normal hemoglobin (Hb) concentration were used to study the effect of different manipulations of the erythron on erythropoietin production and on erythroid progenitor proliferation by bone marrow cells in order to gain insight regarding the regulation of erythropoiesis. The serum erythropoietin (Ep) level was increased in untreated SH rats. After stimulation by either bleeding, hemolysis, or acute hypoxia, both the erythropoietin level and erythroid colony-forming unit (CFU-E) proliferation by bone marrow cells increased in SH rats to levels that were similar to those of normotensive Wistar (W) rats. Exposure to chronic hypoxia induced an increase in Hb concentration in SH rats concomitantly with the increase in RBC. The results obtained in SH rats raise the possibility of a defect in nonEp stimulators of erythropoiesis that may alter Hb synthesis.
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