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The Journal of General Physiology, Vol 26, 473-478, Copyright © 1943 by The Rockefeller University Press

ARTICLE

THE EFFECT OF CARBON DIOXIDE TENSION ON TISSUE METABOLISM (RETINA)

Francis N. Craig 1 and Henry K. Beecher 1

1 From the Anesthesia Laboratory of the Harvard Medical School at the Massachusetts General Hospital, Boston

The metabolism of rat retina was found to be sensitive to the concentration of the carbon dioxide-bicarbonate buffer system. Increasing the carbon dioxide from 1 per cent to 5 per cent at constant pH nearly doubled both respiration and glycolysis. Increasing the carbon dioxide at constant pH from 5 per cent to 20 per cent had no effect on glycolysis, but depressed the QOO2 from 31 to 19.

In a medium containing glucose and the 1 per cent carbon dioxide-bicarbonate buffer, the addition of succinate increased the QOO2 from 12 to 26, without affecting glycolysis. In a medium containing glucose and phosphate, succinate had no significant effect.

Submitted on February 27, 1943


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