Document Detail


Increased lactulose/rhamnose ratio during fluid load is caused by increased urinary lactulose excretion.
MedLine Citation:
PMID:  10644565     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Noninvasive assessment of intestinal permeability in vivo is based on the measurement of urinary excretion of orally administered sugar probes. It is expressed as a ratio, usually lactulose/rhamnose or 3-O-methyl-D-glucose (3-OMG)/rhamnose. In both endotoxemic and control rats that were receiving fluid, we observed an increase in the recovery of lactulose and 3-OMG but not rhamnose in both groups, suggesting an enhancement of intestinal permeability. In the measurement of intestinal permeability, all pre- and postmucosal factors are considered equal for all sugars. We hypothesized that postmucosal factors and not changes in intestinal permeability caused the increased urinary lactulose and 3-OMG recoveries observed during fluid loading. Therefore, the effects of fluid loading on urinary excretion of the sugar probes were studied in healthy rats receiving the sugars intravenously. After intravenous injection, fluid loading increased urinary lactulose recovery threefold but not that of 3-OMG and rhamnose. In conclusion, fluid loading increases the lactulose/rhamnose ratio independent of changes in intestinal permeability. The 3-OMG/rhamnose ratio is not influenced by fluid loading.
Authors:
M M Hallemeesch; W H Lamers; P B Soeters; N E Deutz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of physiology. Gastrointestinal and liver physiology     Volume:  278     ISSN:  0193-1857     ISO Abbreviation:  Am. J. Physiol. Gastrointest. Liver Physiol.     Publication Date:  2000 Jan 
Date Detail:
Created Date:  2000-06-16     Completed Date:  2000-06-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100901227     Medline TA:  Am J Physiol Gastrointest Liver Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  G83-8     Citation Subset:  IM    
Affiliation:
Department of Surgery, Maastricht University, 6200 MD Maastricht, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
3-O-Methylglucose / administration & dosage,  urine
Animals
Endotoxemia / metabolism,  urine
Injections, Intravenous
Intestinal Mucosa / metabolism
Intestines / metabolism
Lactulose / administration & dosage,  metabolism*,  urine
Male
Permeability
Rats
Rats, Wistar
Reference Values
Rhamnose / administration & dosage,  metabolism*,  urine
Sodium Chloride / administration & dosage,  pharmacology
Chemical
Reg. No./Substance:
10485-94-6/Rhamnose; 146-72-5/3-O-Methylglucose; 4618-18-2/Lactulose; 7647-14-5/Sodium Chloride

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


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