Evidence map›Paper›PMID 27646537›Full record

ArticleRespiratory research2016

Respiratory symptoms, sleep-disordered breathing and biomarkers in nocturnal gastroesophageal reflux.

Össur Ingi Emilsson, Bryndís Benediktsdóttir, Ísleifur Ólafsson, Elizabeth Cook, Sigurður Júlíusson, Einar Stefán Björnsson, Sunna Guðlaugsdóttir, Anna Soffía Guðmundsdóttir, Ekaterina Mirgorodskaya, Evert Ljungström and 4 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Respiratory research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
3.5field-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

15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

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  11. Neuroimmune Pathophysiology in Asthma.Frontiers in cell and developmental biology · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 3 institutions in 2 countries.

Össur Ingi EmilssonFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland. ossur.emilsson@medsci.uu.se.ORCID 0000-0002-7199-8491
Bryndís BenediktsdóttirFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland.
Ísleifur ÓlafssonDepartment of Clinical Biochemistry, Landspitali University Hospital, Reykjavik, Iceland.
Elizabeth CookDepartment of Clinical Biochemistry, Landspitali University Hospital, Reykjavik, Iceland.
Sigurður JúlíussonFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland.
Einar Stefán BjörnssonFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland.
Sunna GuðlaugsdóttirDepartment of Gastroenterology, Landspitali University Hospital, Reykjavik, Iceland.
Anna Soffía GuðmundsdóttirDepartment of Gastroenterology, Landspitali University Hospital, Reykjavik, Iceland.
Ekaterina MirgorodskayaDepartment of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden.
Evert LjungströmDepartment of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden.
Erna Sif ArnardóttirFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland.
Thórarinn GíslasonFaculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland.
Christer JansonDepartment of Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden.
Anna-Carin OlinDepartment of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden.
Reykjavík University · ISUniversity of Gothenburg · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNocturnal gastroesophageal reflux (nGER) is associated with respiratory symptoms and sleep-disordered breathing (SDB), but the pathogenesis is unclear. We aimed to investigate the association between nGER and respiratory symptoms, exacerbations of respiratory symptoms, SDB and airway inflammation.

methodsParticipants in the European Community Respiratory Health Survey III in Iceland with nGER symptoms (n = 48) and age and gender matched controls (n = 42) were studied by questionnaires, exhaled breath condensate (EBC), particles in exhaled air (PEx) measurements, and a home polygraphic study. An exacerbation of respiratory symptoms was defined as an episode of markedly worse respiratory symptoms in the previous 12 months.

resultsAsthma and bronchitis symptoms were more common among nGER subjects than controls (54 % vs 29 %, p = 0.01; and 60 % vs 26 %, p < 0.01, respectively), as were exacerbations of respiratory symptoms (19 % vs 5 %, p = 0.04). Objectively measured snoring was more common among subjects with nGER than controls (snores per hour of sleep, median (IQR): 177 (79-281) vs 67 (32-182), p = 0.004). Pepsin (2.5 ng/ml (0.8-5.8) vs 0.8 ng/ml (0.8-3.6), p = 0.03), substance P (741 pg/ml (626-821) vs 623 pg/ml (562-676), p < 0.001) and 8-isoprostane (3.0 pg/ml (2.7-3.9) vs 2.6 pg/ml (2.2-2.9), p = 0.002) in EBC were higher among nGER subjects than controls. Albumin and surfactant protein A in PEx were lower among nGER subjects. These findings were independent of BMI.

conclusionIn a general population sample, nGER is associated with symptoms of asthma and bronchitis, as well as exacerbations of respiratory symptoms. Also, nGER is associated with increased respiratory effort during sleep. Biomarker measurements in EBC, PEx and serum indicate that micro-aspiration and neurogenic inflammation are plausible mechanisms.

Indexed as

Circadian RhythmRespirationSleepAdultAgedAsthmaBiomarkersBreath TestsBronchitisCase-Control StudiesDisease ProgressionExhalationFemaleGastroesophageal RefluxHealth SurveysHumansBiomarkersAsthmaBronchitisExhaled breath condensateNocturnal gastroesophageal refluxParticles in exhaled airSleep-disordered breathing

Identifiers

PMID27646537
PMCPMC5029098
OpenAlexW2523126620

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.