Abstract
We calibrated the erythron transferrin uptake (ETU) and efficiency ratio (R-Ef) in erythropoiesis on the basis of ferroerythrokinetic data in 90 patients with iron deficiency anemia (IDA) and 64 patients with noncirrhotic and cirrhotic portal hypertension with splenomegaly (PH). Then we analyzed the data to elucidate how iron deficiency (ID) status effects variation of these values.
ETU was significantly higher and R-Ef was lower in IDA subgroup before treatment (n=71) than those with any recent treatment (n=19), and in PH with anemia of ID type (PH-ID n=39) than those without ID state (n=34). A remarkable inverse correlation was obtained between ETU and R-Ef in both IDA and PH-ID and iron replacement therapy effected synchronous improvement of these values.
We deduced the quantitative parameter of ID status (ID-x) on blood chemistry data in IDA by multiple regression of ETU and of R-Ef respectively. These calibration formulae were extrapolated to the data in PH-ID. Thus we delineate the factor which represents ID status in common to these two diseases to increase ETU and decrease R-Ef, although the contribution of ID-x was greater in IDA than PH-ID. Additional factors to enhance or modify these values were shortened survival of erythrocytes, splenomegaly and hepatic dysfunction.
