ArticleEuropean journal of clinical nutrition2003
Gastrointestinal handling of glycosyl [13C]ureides.
Article in European journal of clinical nutrition, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.
- European guideline on indications, performance and clinical impact ofUnited European gastroenterology journal · 2021Guideline
- The metabolic fate of doubly labelled lactose-[13C, 15N]ureide after pre-dosing with different ureides.European journal of clinical nutrition · 2010Trial
- The duration of enzyme induction in orocaecal transit time measurements.European journal of clinical nutrition · 2007Trial
- Associations ofCurrent developments in nutrition · 2025Article
- Measurement of Oro-Cecal Transit Time in LPS-Treated Pigs Fed High and Low Fiber Diets Using the Lactose-Journal of agricultural and food chemistry · 2025Article
- Article
- Use of stable isotopes to measure the metabolic activity of the human intestinal microbiota.Applied and environmental microbiology · 2011Article
- Analysis of the urinary glucose-[¹⁵N, ¹⁵N]-ureide content in the study of the lactose-[¹⁵N, ¹⁵N]-ureide metabolism in healthy humans.European journal of clinical nutrition · 2011Article
- Use of the lactose-[13C]ureide breath test for diagnosis of small bowel bacterial overgrowth: comparison to the glucose hydrogen breath test.Journal of gastroenterology · 2009Article
- Comparison of accuracy and precision of heart rate calibration methods to estimate total carbon dioxide production during 13C-breath tests.European journal of clinical nutrition · 2006Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesLactose [(13)C]ureide has been proposed as a noninvasive marker for oro-caecal transit time in adults and children. The present study investigates the handling of lactose [(13)C]ureide ((13)C LU) and glucose [(13)C]ureide ((13)C GU) by the gastrointestinal tract and describes the metabolic fates of these substrates and describes the extent of tracer excretion by different routes. STUDY DESIGN AND SUBJECTS: Four subjects underwent five studies in which they ingested a test meal plus (1) no substrate, (2) (13)C LU, (3) (13)C GU, (4) (13)C LU after predosing with unlabelled lactose ureide and (5) (13)C LU after predosing with glucose ureide. Subjects were studied at home with at least 1 week between tests and they all completed the study. Breath was analysed for (13)CO(2) recovery and urine was analysed for total (13)C recovery, (13)C urea recovery and (13)C GU recovery.
resultsThe profiles and extent of tracer recovery in breath and urine were similar when either (13)C GU or (13)C LU was used, suggesting similar handling of these substrates by the gut. (13)C GU was the major (13)C-enriched species recovered in the urine even when (13)C LU was consumed. Predosing with either lactose ureide or glucose ureide increased the rate of appearance of tracer, but did not alter transit times.
conclusions(13)C LU is hydrolysed to (13)C GU in the small intestine with the fraction of (13)C GU appearing in the urine probably limited by small intestinal permeability. Either (13)C LU or (13)C GU can be used to measure oro-caecal transit time.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.