Heinz Bodies Formed in Erythrocytes by Fatty Acid Ozonides and Ozone

Abstract

Ozonides of the methyl esters of oleic, linoleic, linolenic and arachidonic acids were found to produce Heinz body inclusions in human and mouse erythrocytes. No simple relationships between structure and activity were noted. Concomitant with Heinz body formation, methemoglobin and loss of cellular thiols were observed. Methyl ozonides readily oxidized glutathione and 1 mole of oxidized glutathione was formed per mole of methyl oleate ozonide. Methyl ozonides catalyzed the formation of disulfide-linked interchain polymers between hemoglobin and ovalbumin. Heinz bodies were not produced with ozone in the absence of unsaturated lipids. Heinz bodies were observed in the blood of mice exposed to ozone (0.85 ppm) for 48 hours. These observations suggest that fatty acid ozonides could serve as a toxic chemical species formed on ozone inhalation and could explain the divergent protective effects of lipid antioxidants and thiol generating systems in vivo.