Evidence map›Paper›PMID 20333399›Full record

ArticleLangenbeck's archives of surgery2010

Role of the vagus nerve on the development of postoperative ileus.

Zhirong Gao, Mario H Müller, Martina Karpitschka, Sarah Mittler, Michael S Kasparek, Bernhard Renz, Andrej Sibaev, Jörg Glatzle, Yongyu Li, Martin E Kreis

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Article in Langenbeck's archives of surgery, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

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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

9 citing papers in PubMed, 22 citations in OpenAlex.

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  9. Novel method for studying postoperative ileus in mice.International journal of physiology, pathophysiology and pharmacology · 2012
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4 · The record

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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

10 authors at 3 institutions in 2 countries.

Zhirong GaoDepartment of Pathophysiology, School of Medicine, Tongji University, Si Ping Road 1239, 200092, Shanghai, China.
Mario H Müller
Martina Karpitschka
Sarah Mittler
Michael S Kasparek
Bernhard Renz
Andrej Sibaev
Jörg Glatzle
Yongyu Li
Martin E Kreis
Ludwig-Maximilians-Universität München · DETongji University · CNUniversity of Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPostoperative ileus involves reflex inhibition of intestinal motility within hours after surgery and a subsequent intestinal inflammatory response that is characterized by efferent vagal modulation via acetylcholine receptors on intestinal macrophages. We aimed to characterize the role of vagal modulation of intestinal motility during the early hours after surgery.

methodsC57BL6 mice underwent laparotomy and standardized small bowel manipulation to induce postoperative ileus. Subgroups were vagotomized 3-4 days prior to experiments or received pharmacological inhibition of the acetylcholine alpha7 subunit with the inhibitor alpha-bungarotoxin, while control animals were sham operated and remained otherwise untreated. Three hours later, a 2-cm jejunal segment was harvested with the mesentery attached. Mesenteric afferent nerve recordings were established in an organ bath generating a multiunit signal with subsequent computerized analysis. Intraluminal pressure was continuously recorded to assess intestinal motility. Afferent nerve responses were quantified at baseline and to chemical stimulation with bradykinin (0.5 microM) or serotonin (5-HT; 500 microM) and following mechanical stimulation by continuous ramp distension to 60 mmHg.

resultsPeak amplitudes of intestinal motility and afferent nerve discharge at baseline were not different following chronic vagotomy, alpha-bungarotoxin or sham operation. Maximum afferent discharge to 5-HT following alpha-bungarotoxin was comparable to sham controls, while the response was reduced in chronically vagotomized animals (p < 0.05). Maximum afferent nerve discharge to bradykinin and peak firing during maximum distension at 60 mmHg was similar in the different subgroups. At luminal distension from 10 to 30 mmHg, afferent discharge was lower in vagotomized animals compared to sham controls (p < 0.05) but unchanged after alpha-bungarotoxin.

conclusionsSensitivity to low-threshold distension and 5-HT is mediated via vagal afferents during postoperative ileus, while sensitivity to high-threshold distension and bradykinin is independent of vagal afferent innervation. Early inhibition of intestinal motility at 3 h after onset of postoperative ileus does not appear to depend on vagal innervation.

Indexed as

AnimalsBungarotoxinsDisease Models, AnimalFemaleGastrointestinal MotilityIntestinal Pseudo-ObstructionIntestine, SmallMesenteryMiceMice, Inbred C57BLSnake VenomsVagotomyVagus NerveBungarotoxinsSnake Venoms

Identifiers

PMID20333399
OpenAlexW2066229562

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Read underepoch 390

Registered trials

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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.