Carbonic anhydrase isoenzyme B in erythrocytes of anemic and non-anemic uremic subjects.

A specific and quantitative immunological method for determination of human erythrocyte carbonic anhydrase isoenzyme B has been used to determine the contents of this enzyme in the erythrocytes from healthy persons and anemic and non-anemic subjects with renal insufficiency. The investigations have shown significant increase of carbonic anhydrase type B in the erythrocytes of patients with renal failure. The erythrocytes of anemic uremic patients have a significantly higher content of erythrocyte carbonic anhydrase isoenzyme B than the erythrocytes of non-anemic uremic subjects. Significant correlations were found between human erythrocyte carbonic anhydrase type B and hemoglobin and between it and plasma bicarbonate. No correlation was found between human erythrocyte carbonic anhydrase and plasma creatinine or creatinine clearance and serum zinc.