Evidence map›Paper›PMID 24972684›Full record

ArticleObesity surgery2014

Vagal innervation of intestine contributes to weight loss After Roux-en-Y gastric bypass surgery in rats.

Zheng Hao, R Leigh Townsend, Michael B Mumphrey, Laurel M Patterson, Jianping Ye, Hans-Rudolf Berthoud

Open access · greenAbstract read
In one paragraph

Article in Obesity surgery, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
6.7field-weighted citation impact, top 3% of its field
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

44 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Review
  3. The role of the gut-brain axis in bariatric surgery.Current opinion in neurobiology · 2025
    Review
  4. The Enteric Neuronal Circuitry: A Key Ignored Player in Nutrient Sensing Along the Gut-Brain Axis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Review
  5. Review
  6. Novel neural pathways targeted by GLP-1R agonists and bariatric surgery.Pflugers Archiv : European journal of physiology · 2025
    Review
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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

6 authors at 2 institutions in 1 country.

Zheng HaoNeurobiology of Nutrition, Pennington Biomedical Research Center, Louisiana State University System, 6400 Perkins Road, Baton Rouge, LA, 70808, USA.
R Leigh Townsend
Michael B Mumphrey
Laurel M Patterson
Jianping Ye
Hans-Rudolf Berthoud
Pennington Biomedical Research Center · USLouisiana State University System · US

Funding

Neural mechanisms controlling food intake and body weight after bariatric surgeryR01DK047348 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI BERTHOUD, HANS-RUDOLF · 1994 to 2018
$5.0M
Mechanism of IKK in FFA-associated Insulin ResistanceR01DK068036 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI YE, JIANPING · 2004 to 2013
$2.7M
Non-Homeostatic Neural Controls of Food IntakeR01DK071082 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI BERTHOUD, HANS-RUDOLF · 2006 to 2010
$1.2M
Regulation of Energy Expenditure by NF-kBR56DK068036 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI YE, JIANPING · 2009 to 2015
$296k
NIDDK NIH HHS DK 068036NIDDK NIH HHS DK 071082NIDDK NIH HHS DK 47348NIDDK NIH HHS R01 DK047348NIDDK NIH HHS R01 DK071082
6 · The paper itself

Abstract

backgroundIt is conceivable that overstimulation of chemo- and mechano-sensors in the Roux and common limbs by uncontrolled influx of undigested nutrients after Roux-en-Y gastric bypass surgery (RYGB) could lead to exaggerated satiety signaling via vagal afferents and contribute to body weight loss. Because previous clinical and preclinical studies using vagotomy came to different conclusions, the aim was to examine the effects of selective and histologically verified celiac branch vagotomy on reduced food intake and body weight loss induced by RYGB.

methodsMale Sprague-Dawley rats underwent either RYGB + celiac branch vagotomy (RYGB/VgX, n=15), RYGB + sham celiac branch vagotomy (RYGB/Sham VgX; n=6), Sham RYGB + celiac branch vagotomy (Sham/VgX; n=6), or sham RYGB + sham celiac branch vagotomy (Sham/Sham; n=6), and body weight, body composition, and food choice were monitored for 3 months after intervention.

resultsIn rats with RYGB, histologically confirmed celiac branch vagotomy significantly moderated weight loss during the first 40 days after surgery, compared to either sham or failed vagotomy (P<0.05). In contrast, celiac branch vagotomy slightly, but non-significantly, reduced body weight gain in sham RYGB rats compared to sham/sham rats. Furthermore, the significant food intake suppression during the first 32 days after RYGB (P<0.05) was also moderated in rats with verified celiac branch vagotomy.

conclusionsThe results suggest that signals carried by vagal afferents from the mid and lower intestines contribute to the early RYGB-induced body weight loss and reduction of food intake.

Indexed as

Gastric BypassAnimalsAppetite RegulationDisease Models, AnimalIntestinesMaleObesity, MorbidRatsRats, Sprague-DawleyVagotomyVagus NerveWeight Loss

Identifiers

PMID24972684
PMCPMC4224982
OpenAlexW2064423895

What OpenQuestion holds

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Read underepoch 390

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.