Evidence map›Paper›PMID 15479676›Full record

ArticleGut2004

Deranged smooth muscle alpha-actin as a biomarker of intestinal pseudo-obstruction: a controlled multinational case series.

C H Knowles, D B A Silk, A Darzi, B Veress, R Feakins, A H Raimundo, T Crompton, E C Browning, G Lindberg, J E Martin

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Gut, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
6.9field-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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 115 citations in OpenAlex.

  1. Guideline
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  8. Myotonic dystrophy type 1 and pseudo-obstruction in a child with smooth muscle α-actin deficiency and eosinophilic myenteric plexitis.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2018
    Article
  9. Article
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  17. New perspectives in the diagnosis and management of enteric neuropathies.Nature reviews. Gastroenterology & hepatology · 2013
    Review
  18. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 6 institutions in 2 countries.

C H KnowlesInstitute of Cellular and Molecular Science, Barts and the London, Queen Mary's School of Medicine and Dentistry, UK.
D B A Silk
A Darzi
B Veress
R Feakins
A H Raimundo
T Crompton
E C Browning
G Lindberg
J E Martin
Queen Mary University of London · GBCentral Middlesex Hospital · GBKarolinska Institutet · SELund University · SERoyal London Hospital · GBSt Mary's Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsChronic idiopathic intestinal pseudo-obstruction (CIIP) is a severe motility disorder associated with significant morbidity. Several histopathological (neuropathic and myopathic) phenotypes have been described but only a single adult with jejunal smooth (circular) muscle alpha-actin deficiency. We present a prospective multinational case series investigating smooth muscle alpha-actin deficiency as a biomarker of this disease.

methodsA total of 115 fully clinically and physiologically (including prolonged (24 hour) ambulatory jejunal manometry) characterised CIIP patients from three European centres were studied. Immunohistochemical localisation of actins and other cytoskeletal proteins were performed on laparoscopic full thickness jejunal biopsies and compared with adult controls. Distribution of alpha-actin was also characterised in other gut regions and in the developing human alimentary tract.

resultsTwenty eight of 115 (24%) CIIP patient biopsies had absent (n = 22) or partial (n = 6) jejunal smooth muscle alpha-actin immunostaining in the circular muscle layer. In contrast, smooth muscle alpha-actin staining was preserved in the longitudinal muscle and in adult jejunal controls (n = 20). Comparative study of other adult alimentary tract regions and fetal small intestine, suggested significant spatial and temporal variations in smooth muscle alpha-actin expression.

conclusionsThe ability to modulate alpha-smooth muscle actin expression, evident in development, is maintained in adult life and may be influenced by disease, rendering it a valuable biomarker even in the absence of other structural abnormalities.

Indexed as

ActinsAdolescentAdultAgedBiomarkersChildChronic DiseaseFemaleHumansIntestinal Pseudo-ObstructionJejunumMaleManometryMiddle AgedMuscle, SmoothProspective StudiesActinsBiomarkers

Identifiers

PMID15479676
PMCPMC1774262
OpenAlexW2101816766

What OpenQuestion holds

Textmetadata
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.