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J Appl Physiol 45: 893-898, 1978;
8750-7587/78 $5.00
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Journal of Applied Physiology, Vol 45, Issue 6 893-898, Copyright © 1978 by American Physiological Society

ARTICLES

Response of the rat erythrocyte to ozone exposure

E. C. Larkin, S. L. Kimzey and K. Siler

Sprague-Dawley rats were exposed to high (6--8 ppm) and moderate (1.5 ppm) amounts of ozone (O3) for various time periods. Response of the rat erythrocyte to ozone was monitored with red blood cell potassium (rubidium) influx studies, with storage stress combined with ultrastructural studies and with levels of erythrocyte glutathione peroxidase and superoxide dismutase. Erythrocytes of rats exposed to O3 showed no significant changes either in their potassium influx or in their glutathione peroxidase and superoxide dismutase activities compared to controls. Erythrocyte differential counts on O3-exposed animals showed significant changes initially as well as following storage stress compared to controls. Rats exposed to 8 ppm O3 for 4 h showed a marked increase in echinocytes. These consistent transformations from discocytes to echinocytes following O3 exposure suggest latent erythrocyte damage has occurred.




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