Carbonic andydrase isoenzyme B in erythrocytes of subjects with different types of anemia.

A specific and quantitative immunological method for determination of human erythrocyte carbonic anhydrase (HCA) isoenzyme B has been used to determine the contents of enzyme in the erythrocytes from healthy persons and from subjects with different types of anemia. The investigations have shown a statistically significant increase of HCA type B in the erythrocytes of subjects suffering from uremic anemia, cancer anemia, megaloblastic anemia while in sideropenic anemia the content was normal. In erythrocytes from patients with acute bleeding anemia the content of HCA type B was significantly decreased. An inverse relationship was found between B-hemoglobin and HCA type B in megaloblastic anemia but not in the other types of anemia.