Evidence map›Paper›PMID 30120640›Full record

Trial reportObesity surgery2019

EUS-Guided Intragastric Injection of Botulinum Toxin A in the Preoperative Treatment of Super-Obese Patients: a Randomized Clinical Trial.

Eduardo Guimarães Hourneaux de Moura, Igor Braga Ribeiro, Mariana Souza Varela Frazão, Luiz Henrique Mazzonetto Mestieri, Diogo Turiani Hourneaux de Moura, Creusa Maria Roveri Dal Bó, Vitor Ottoboni Brunaldi, Eduardo Turiani Hourneaux de Moura, Gabriel Cairo Nunes, Fábio Alberto Castillo Bustamante and 4 more

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Obesity surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
4.4field-weighted citation impact, top 5% 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

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Endoscopic bariatrics: Current status and emerging technologies.World journal of gastrointestinal endoscopy · 2025
    Review
  5. Article
  6. A single-center experience of safety and effectiveness of adjustable intragastric balloon in patients with super obesity.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Bariatric and Metabolic Endoscopy: A New Paradigm.Clinical and translational gastroenterology · 2021
    Review
  13. Review
  14. Article
  15. Article
  16. PropofolWorld journal of gastrointestinal endoscopy · 2019
    Article
  17. Review
  18. Article
  19. Botox or No-Tox?Obesity surgery · 2019
    Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 2 institutions in 1 country.

Eduardo Guimarães Hourneaux de MouraGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Igor Braga RibeiroGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil. igorbraga1@gmail.com.ORCID 0000-0003-1844-8973
Mariana Souza Varela FrazãoGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Luiz Henrique Mazzonetto MestieriGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Diogo Turiani Hourneaux de MouraGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Creusa Maria Roveri Dal BóGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Vitor Ottoboni BrunaldiGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Eduardo Turiani Hourneaux de MouraGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Gabriel Cairo NunesGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Fábio Alberto Castillo BustamanteGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Manoel Dos Passos Galvão NetoEndoscopy Unit, Gastro Obeso Center, São Paulo, Brazil.
Sergio Eiji MatugumaGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Wanderley Marques BernardoGastrointestinal Endoscopy Unit - Hospital das Clínicas - HC/FMUSP, University of São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 255, São Paulo, SP, CEP 05403-000, Brazil.
Marco Aurélio SantoBariatric and Metabolic Surgery Unit, Hospital das Clínicas, University of Sao Paulo School of Medicine, São Paulo, Brazil.
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRGastro Obeso Center · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObesity is a disease that is highly prevalent in Brazil, and the associated comorbidities represent a major global public health challenge. Botulinum toxin type A (BTX-A) is a potent neurotoxin and inhibitor of gastric smooth muscle activity. In theory, BTX-A administration should promote early satiety and weight loss because it delays gastric emptying by inhibiting acetylcholine-mediated peristalsis, which is primarily responsible for gastric motility. Because results in the literature are discrepant, the efficacy of intragastric injections of BTX-A as a primary treatment for obesity remains unknown. The objective of this prospective, double-blind, single-center randomized study was to evaluate the effects of endoscopic ultrasound-guided intragastric BTX-A injections, as a bridge to bariatric surgery, in super-obese patients.

methodsThirty-two super-obese patients were randomized to one of two groups: BTX-A, in which 200 units of BTX-A were injected into the gastric antrum and body; and control, in which the same injections were performed with 0.9% saline. Weight, body mass index (BMI), and loss of excess weight were measured monthly over a 6-month period. Gastric emptying scintigraphy was performed before and after the procedure.

resultsThe patients in both groups showed significant weight loss over the course of the study (p < 0.001). There were no statistically significant differences between the groups regarding weight loss, excess weight, total loss of excess weight, total weight loss, or change in BMI.

conclusionsIntragastric injection of BTX-A does not appear to be an effective method of achieving preoperative weight loss in super-obese patients.

Indexed as

Botulinum Toxins, Type AObesity, MorbidEndosonographyGastric EmptyingHumansPreoperative CareWeight LossBotulinum Toxins, Type ABotulinum toxinsGastric emptyingObesityUS endoscopy

Identifiers

PMID30120640
OpenAlexW2887535621

What OpenQuestion holds

Textmetadata
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.