Evidence map›Paper›PMID 23667744›Full record

ArticleJournal of neurogastroenterology and motility2013

Longitudinal muscle dysfunction in achalasia esophagus and its relevance.

Ravinder K Mittal, Su Jin Hong, Valmik Bhargava

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurogastroenterology and motility, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Achalasia.Nature reviews. Disease primers · 2022
    Review
  9. Review
  10. Value of Multidetector Computed Tomography in the Assessment of Achalasia Subtypes and Detection of Pulmonary and Thoracic Complications.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2019
    Article
  11. Article
  12. Esophageal contractions in type 3 achalasia esophagus: simultaneous or peristaltic?American journal of physiology. Gastrointestinal and liver physiology · 2016
    Article
  13. Effect of Peroral Endoscopic Myotomy on Esophageal Motor Function.Journal of neurogastroenterology and motility · 2016
    Article
  14. Article
  15. Long-term Outcomes of Patients With Normal or Minor Motor Function Abnormalities Detected by High-resolution Esophageal Manometry.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2015
    Article
  16. Article
  17. Article
  18. Article
  19. 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

3 authors at 2 institutions in 1 country.

Ravinder K MittalDivision of Gastroenterology, Department of Medicine, San Diego VA Health Care System and University of California, San Diego, CA, USA.
Su Jin Hong
Valmik Bhargava
UC San Diego Health System · USUniversity of California, San Diego · US

Funding

Genesis of Esophageal Pain: Longitudinal Muscle Spasm and Wall IschemiaR01DK060733 · NIDDK · VETERANS MEDICAL RESEARCH FDN/SAN DIEGO · PI MITTAL, RAVINDER K. · 2002 to 2016
$3.9M
NIDDK NIH HHS R01 DK060733
6 · The paper itself

Abstract

Muscularis propria of the esophagus is organized into circular and longitudinal muscle layers. Goal of this review is to summarize the role of longitudinal muscle in physiology and pathophysiology of esophageal sensory and motor function. Simultaneous manometry and ultrasound imaging that measure circular and longitudinal muscle contraction respectively reveal that during peristalsis 2 layers of the esophagus contract in perfect synchrony. On the other hand, during transient relaxation of the lower esophageal sphincter (LES), longitudinal muscle contracts independently of circular muscle. Recent studies provide novel insights, i.e., longitudinal muscle contraction of the esophagus induces LES relaxation and possibly descending relaxation of the esophagus. In achalasia esophagus and other motility disorders there is discoordination between the 2 muscle layers. Longitudinal muscle contraction patterns are different in the recently described three types of achalasia identified by high-resolution manometry. Robust contraction of the longitudinal muscle in type II achalasia causes pan-esophageal pressurization and is the mechanism of whatever little esophageal emptying that take place in the absence of peristalsis and impaired LES relaxation. It may be that preserved longitudinal muscle contraction is also the reason for superior outcome to medical/surgical therapy in type II achalasia esophagus. Prolonged contractions of longitudinal muscles of the esophagus is a possible mechanism of heartburn and "angina like" pain seen in esophageal motility disorders and possibly achalasia esophagus. Novel techniques to record longitudinal muscle contraction are on the horizon. Neuro-pharmacologic control of circular and longitudinal muscles is different, which provides an important opportunity for the development of novel pharmacological therapies to treat sensory and motor disorders of the esophagus.

Indexed as

Esophageal achalasiaEsophageal motility disordersMusclesPain

Identifiers

PMID23667744
PMCPMC3644649
OpenAlexW1992470108

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.