Document Detail


Sulfate production depicts fed-state adaptation to protein restriction in humans.
MedLine Citation:
PMID:  11440911     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
One feature of the adaptation to dietary protein restriction is reduced urea production over the hours after consumption of a test meal of fixed composition. This adaptation is impaired in conventionally treated insulin-dependent diabetes mellitus (Hoffer LJ, Taveroff A, and Schiffrin A. Am J Physiol Endocrinol Metab 272: E59--E67, 1997). We have now tested the response to a test meal containing less protein and included as a main outcome variable the production of sulfate, a specific indicator of sulfur amino acid catabolism. Six normal men consumed a mixed test meal containing 0.25 g protein/kg and 10 kcal/kg while adapted to high (1.5 g x kg(-1) x day(-1)) and low (0.3 g. kg(-1) x day(-1)) protein intakes. They followed the identical protocol twice. Six subjects with insulin-dependent diabetes consumed the test meal while adapted to their customary high-protein diet. Adaptation to protein restriction reproducibly reduced 9-h cumulative postmeal urea N and S production by 22--29% and 49--52%, respectively (both P < 0.05). Similar results were obtained for a postmeal collection period of 6 h. The response of the diabetic subjects was normal. We conclude that reductions in postmeal urea and sulfate production after protein restriction are reproducible and are evident using a postmeal collection period as short as 6 h. Sulfate production effectively depicts fed-state adaptation to protein restriction.
Authors:
M J Hamadeh; A Schiffrin; L J Hoffer
Publication Detail:
Type:  Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of physiology. Endocrinology and metabolism     Volume:  281     ISSN:  0193-1849     ISO Abbreviation:  Am. J. Physiol. Endocrinol. Metab.     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-07-06     Completed Date:  2001-08-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100901226     Medline TA:  Am J Physiol Endocrinol Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E341-8     Citation Subset:  IM    
Affiliation:
Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada H3T 1E2.
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MeSH Terms
Descriptor/Qualifier:
Adult
Alanine / metabolism
Blood Glucose
Carbon Isotopes
Diabetes Mellitus, Type 1 / metabolism*
Diet, Protein-Restricted*
Dietary Proteins / metabolism*
Female
Humans
Male
Nitrogen Isotopes
Postprandial Period*
Sulfates / metabolism*
Urea / blood,  urine
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Carbon Isotopes; 0/Dietary Proteins; 0/Nitrogen Isotopes; 0/Sulfates; 56-41-7/Alanine; 57-13-6/Urea

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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