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Article
December 1950

THE ERYTHROCYTE COPROPORPHYRINVariation in Respect to Erythrocyte Protoporphyrin and Reticulocytes in Certain of the Anemias

Author Affiliations

With the Technical Assistance of Miss V. E. Hawkinson, Bossenmaier and Mrs. Rita Hughes; MINNEAPOLIS

From the Department of Medicine, University of Minnesota Hospital.

AMA Arch Intern Med. 1950;86(6):797-809. doi:10.1001/archinte.1950.00230180002001
Abstract

THE PRESENCE of free protoporphyrin in the circulating red blood cells was first described in 1928 by van den Bergh and Hyman.1 This discovery was widely confirmed, and in the intervening period considerable knowledge has been gained of variations in concentration in disease.2 In 1936 it was pointed out that reticulocytes are especially rich in porphyrin.3 At that time a satisfactory method of quantitative determination was not available. Later, with the use of the method devised in collaboration with Grinsterin,4 it soon became apparent that the correlation of erythrocyte porphyrin concentration with reticulocyte percentage varied considerably with the situation at hand.2a In acute phenylhydrazine anemia of rabbits the correlation was quite close; in pernicious anemia with liver therapy the peak of porphyrin concentration in the red cells was considerably later than the peak of reticulocyte percentage; in iron deficiency anemias and lead poisoning very great

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