Investigations of gestation-induced metabolic changes in the rat liver. I. Glycogen metabolism.

The activities of alpha-glucan-phosphorylase and phosphoglucomutase and the concentration of glycogen were measured in the liver of pregnant and non-pregnant rats. There were no significant differences between normal non-pregnant and pregnant animals nor was there any change of enzyme activities during pregnancy. Our results lend support to the idea that glycogen metabolism is not changed during normal pregnancy.