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The relationship between serum urea levels and dietary nitrogen utilization in young men

Published online by Cambridge University Press:  24 July 2007

Yvonne S. M. Taylor ,
N. S. Scrimshaw  and
V. R. Young
Yvonne S. M. Taylor
Affiliation:
Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
N. S. Scrimshaw
Affiliation:
Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
V. R. Young
Affiliation:
Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Abstract

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1. Results from metabolic balance studies in young adult men were examined for the relationships between the concentration of serum urea (SUN) and the efficiency of dietary nitrogen utilization. A total of 231 separate balance periods were included in the analysis. Net protein utilization (NPU) was used as an index of dietary protein quality.

2. Protein intake ranged from 0·27–0·73 g/kg body-weight per d in the various experiments. There was a highly significant negative correlation between NPU and urea levels. The relationship was: NPU = 1·23–0·029 × SUN (mmol/l) (r = −0·89).

3. These results are considered in relation to the evaluation of protein quality in adult humans.

Type
Clinical and Human Nutrition
Information
British Journal of Nutrition , Volume 32 , Issue 2 , September 1974 , pp. 407 - 411
Copyright
Copyright © The Nutrition Society 1974

References

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