Heinz Body Hemolytic Anemia Induced by DQ-2511, a New Anti-ulcer Drug, in Dogs

Abstract

Heinz Body Hemolytic Anemia Induced by DQ-2511, a New Anti-ulcer Drug, in Dogs. Ohno, H., Tojo, H., Kakihata, K., Nomura, M., and Takayama, S. (1993). Fundam. Appl. Toxicol. 20, 141-146.DQ-2511, a new anti-ulcer drug, was administered to beagle dogs for 4 weeks to investigate the mechanism whereby this drug induced hemolytic anemia and its reversibility in comparison with β-acetylphenylhydrazine. Hemolytic anemia accompanied by an increase in the number of cells containing Heinz bodies that was preceded by a marked decrease in blood-reduced glutathione concentration was observed in dogs receiving 600 mg/kg of DQ-2511, but only a slight increase in the methemoglobin level was noted. β-Acetylphenylhydrazine, however, caused hemolytic anemia accompanied by marked increases in both Heinz body-containing cells and methemoglobin concentration, but the blood-reduced glutathione concentration was not decreased consistently with the formation of Heinz bodies. Hemolytic anemia disappeared after a 4-week recovery period in the dogs that received DQ-2511. These results suggest that decreases in reduced glutathione in erythrocytes play an important role in the anemia and Heinz body formation induced by DQ-2511, but not by β-acetylphenylhydrazine.