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Article
November 8, 1952

RECENT CONTRIBUTIONS TO THE UNDERSTANDING OF EXPERIMENTAL DIABETES

Author Affiliations

New York
From the Division of Nutrition and Physiology, the Public Health Research Institute of the City of New York, Inc.

JAMA. 1952;150(10):971-973. doi:10.1001/jama.1952.03680100013005
Abstract

To the biochemist the living organism is a complex, highly organized, heterogeneous system of compounds displaying a high degree of chemical activity. Despite this activity, it is striking that the chemical composition of the several tissues of the normal adult animal remains fairly constant. It is today recognized that in many instances this constancy of composition is not attributable to thermodynamic equilibrium or to kinetic stability. In general, in the living animal the organic reactions that comprise intermediary metabolism take place far from the equilibrium point, and the molecules of substrate, activated in most cases by enzymes, have far less stability than do the same compounds in pure form in bottles on the shelf. Thus glucose, undergoing no measurable decay at 37 C in the pure state, will, in the presence of animal tissues, rapidly disappear.

The constancy of composition of body fluids and tissues with respect to many organic

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