Evidence map›Paper›PMID 27280473›Full record

ArticlePloS one2016

Do Low Molecular Weight Agents Cause More Severe Asthma than High Molecular Weight Agents?

Olga Meca, María-Jesús Cruz, Mónica Sánchez-Ortiz, Francisco-Javier González-Barcala, Iñigo Ojanguren, Xavier Munoz

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

14 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. The Impact of Ambient Environmental and Occupational Pollution on Respiratory Diseases.International journal of environmental research and public health · 2022
    Review
  7. Review
  8. Review
  9. Causes and Phenotypes of Work-Related Asthma.International journal of environmental research and public health · 2020
    Review
  10. Progress in Occupational Asthma.International journal of environmental research and public health · 2020
    Review
  11. Article
  12. Article
  13. Review
  14. 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

6 authors at 2 institutions in 1 country.

Olga MecaServicio de Neumología, Hospital General Universitario Morales Messeguer, Murcia, Spain.
María-Jesús CruzServicio de Neumología, Hospital Universitario Vall d'Hebron, Barcelona, Catalonia, Spain.
Mónica Sánchez-OrtizServicio de Neumología, Hospital Universitario Vall d'Hebron, Barcelona, Catalonia, Spain.
Francisco-Javier González-BarcalaRespiratory Department, Clinic University Hospital, Santiago de Compostela, Spain.
Iñigo OjangurenServicio de Neumología, Hospital Universitario Vall d'Hebron, Barcelona, Catalonia, Spain.
Xavier MunozServicio de Neumología, Hospital Universitario Vall d'Hebron, Barcelona, Catalonia, Spain.
Centro de Investigación Biomédica en Red de Enfermedades Respiratorias · ESHospital General Universitario Morales Meseguer · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe aim of this study was to analyse whether patients with occupational asthma (OA) caused by low molecular weight (LMW) agents differed from patients with OA caused by high molecular weight (HMW) with regard to risk factors, asthma presentation and severity, and response to various diagnostic tests.

methodsSeventy-eight patients with OA diagnosed by positive specific inhalation challenge (SIC) were included. Anthropometric characteristics, atopic status, occupation, latency periods, asthma severity according to the Global Initiative for Asthma (GINA) control classification, lung function tests and SIC results were analysed.

resultsOA was induced by an HMW agent in 23 patients (29%) and by an LMW agent in 55 (71%). A logistic regression analysis confirmed that patients with OA caused by LMW agents had a significantly higher risk of severity according to the GINA classification after adjusting for potential confounders (OR = 3.579, 95% CI 1.136-11.280; p = 0.029). During the SIC, most patients with OA caused by HMW agents presented an early reaction (82%), while in patients with OA caused by LMW agents the response was mainly late (73%) (p = 0.0001). Similarly, patients with OA caused by LMW agents experienced a greater degree of bronchial hyperresponsiveness, measured as the difference in the methacholine dose-response ratio (DRR) before and after SIC (1.77, range 0-16), compared with patients with OA caused by HMW agents (0.87, range 0-72), (p = 0.024).

conclusionsOA caused by LMW agents may be more severe than that caused by HMW agents. The severity of the condition may be determined by the different mechanisms of action of these agents.

Indexed as

Administration, InhalationAdultAir Pollutants, OccupationalAsthma, OccupationalBronchial HyperreactivityFemaleHumansMaleMiddle AgedMolecular WeightOccupational DiseasesOccupational ExposureRespiratory Function TestsRetrospective StudiesRisk FactorsSeverity of Illness IndexAir Pollutants, Occupational

Identifiers

PMID27280473
PMCPMC4900572
OpenAlexW2413275813

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.