Abstract
The insulin/glucagon ratio was measured during the embryologic development of the rat and its changes were correlated with the variation in the diet and in hepatic metabolism. During late fetal life, the high carbohydrate diet and the high insulin/glucagon ratio are appropriate for an organism whose metabolism is set at a maximally anabolic mode: growth, protein synthesis, liver glycogen storage. After birth and during suckling, rapid growth can coexist with active gluconeogenesis and ketogenesis in the liver and with a low insulin/glucagon ratio, since the mother’s milk is a high fat diet. The weaning period is characterized by a replacement of this high fat by a high carbohydrate diet. Suppression of gluconeogenesis and ketogenesis and appearance of an active lipogenesis in the liver occur, with a rise in insulin/glucagon ratio. These data suggest that glucagon plays a more important role during early life than during adult life.
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Girard, J.R., Ferre, P., Kervran, A., Pegorier, J.P., Assan, R. (1977). Role of the Insulin/Glucagon Ratio in the Changes of Hepatic Metabolism During Development of the Rat. In: Foà, P.P., Bajaj, J.S., Foà, N.L. (eds) GLUCAGON: Its Role in Physiology and Clinical Medicine. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-6366-1_36
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DOI: https://doi.org/10.1007/978-1-4612-6366-1_36
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