Evidence map›Paper›PMID 20119735›Full record

ArticleObesity surgery2010

Vagal sparing surgical technique but not stoma size affects body weight loss in rodent model of gastric bypass.

Marco Bueter, Christian Löwenstein, Hutan Ashrafian, Jacquelien Hillebrand, Stephen R Bloom, Torsten Olbers, Thomas Lutz, Carel W le Roux

Abstract read
In one paragraph

Article in Obesity surgery, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed.

  1. Gastric bypass reduces fat intake and preference.American journal of physiology. Regulatory, integrative and comparative physiology · 2011
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  13. The gut microbiota to the brain axis in the metabolic control.Reviews in endocrine & metabolic disorders · 2019
    Review
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  15. Review
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  19. Does gastric bypass surgery change body weight set point?International journal of obesity supplements · 2016
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Marco BueterImperial Weight Centre, Department of Investigative Medicine, Hammersmith Hospital, Imperial College London, Du Cane Road, London W12 0NN, UK. m.bueter@imperial.ac.uk
Christian Löwenstein
Hutan Ashrafian
Jacquelien Hillebrand
Stephen R Bloom
Torsten Olbers
Thomas Lutz
Carel W le Roux

Funding

Biotechnology and Biological Sciences Research Council BB/E52708X/1Wellcome Trust 083662
6 · The paper itself

Abstract

backgroundThe aim of this study was to evaluate whether gastric bypass with or without vagal preservation resulted in a different outcome.

methodsBody weight, food intake and postprandial peptide YY (PYY) and glucagon-like peptide (GLP-1) levels were compared between gastric bypass (n = 55) and sham-operated rats (n = 27) in three groups. In group 1 (n = 17), the vagal nerve was not preserved, while in group 2 the vagal nerve was preserved during gastric bypass (n = 10). In group 3, gastric bypass rats (n = 28) were randomised for either one of the two techniques.

resultsRats in which the vagal nerve was preserved during gastric bypass showed a lower body weight (p < 0.001) and reduced food intake (p < 0.001) compared to rats in which the vagal nerve was not preserved during the gastric bypass operation. Levels of PYY and GLP-1 were significantly increased after gastric bypass compared to sham-operated controls (p < 0.05), but there was no difference between gastric bypass rats with and without vagal preservation. Differences in food intake and body weight were not related to the size of the gastro-jejunostomy in gastric bypass rats. There were no signs of malabsorption or inflammation after gastric bypass.

conclusionWe propose that the vagal nerve should be preserved during the gastric bypass operation as this might play an important role for the mechanisms that induce weight loss and reduce food intake in rats. In contrast, the gastro-jejunal stoma size was found to be of minor relevance.

Indexed as

Weight LossAnimalsGastric BypassGastrostomyGlucagon-Like Peptide 1JejunostomyMaleObesity, MorbidPeptide YYPostprandial PeriodRandom AllocationRatsRats, WistarTreatment OutcomeVagus NerveGlucagon-Like Peptide 1Peptide YY

Identifiers

PMID20119735
PMCPMC3715840

What OpenQuestion holds

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Registered trials

None linked

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.