Evidence map›Paper›PMID 30654200›Full record

Observational studyThe journal of allergy and clinical immunology. In practice

Serum IgG Concentrations in Adult Patients Experiencing Virus-Induced Severe Asthma Exacerbations.

Morgane Verduyn, Guillaume Botto, Julien Jaubert, Clément Lier, Thomas Flament, Laurent Guilleminault

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in The journal of allergy and clinical immunology. In practice. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Prevalence of respiratory viruses in stable and acute asthma: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2026
    Pooled it
  2. Trial
  3. Article
  4. Review
  5. Review
  6. Konjac Glucomannan fromFood science & nutrition · 2021
    Article
  7. Article
  8. Monoclonal Antibodies and Airway Diseases.International journal of molecular sciences · 2020
    Review
  9. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Morgane VerduynDepartment of Respiratory Medicine, University Hospital Centre of Réunion, Saint-Pierre, France.
Guillaume BottoDepartment of Respiratory Medicine, University Hospital Centre of Tours, Tours, France.
Julien JaubertDepartment of Microbiology, University Hospital Centre of Réunion, Saint-Pierre, France.
Clément LierDepartment of Virology, University Hospital Centre of Tours, Tours, France.
Thomas FlamentDepartment of Respiratory Medicine, University Hospital Centre of Tours, Tours, France.
Laurent GuilleminaultDepartment of Respiratory Medicine, University Hospital Centre of Toulouse, Toulouse, France; Center for Pathophysiology Toulouse Purpan, INSERM U1043, CNRS UMR 5282, Toulouse III University, Toulouse, France. Electronic address: Guilleminault.l@chu-toulouse.fr.
Thion Medical (France) · FRCentre Hospitalier Universitaire de La Réunion · FRCentre Hospitalier Universitaire de Toulouse · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients experiencing severe asthma exacerbations have a poorer quality of life and an increase in morbidity and mortality. Viruses are frequently involved in asthma exacerbations.

objectiveTo determine the value of measuring serum IgG concentrations in asthma exacerbations and assess their link with viral infections in patients hospitalized for asthma.

methodsPatients hospitalized for asthma exacerbation were included in an observational study from January 1, 2015, to December 31, 2015. Serum IgG concentrations on admission were compared between patients with a positive upper airway viral sample and those with a negative viral sample.

resultsAmong the 82 patients included, those with positive viral nasopharyngeal samples (n = 40) presented with lower serum IgG concentrations during exacerbation than those with a negative viral sample (n = 42) (10.1 ± 2.3 g/L vs 11.5 ± 3.6 g/L; P < .05). The median concentration of serum IgG was lower in patients hospitalized for more than 3 days compared with those hospitalized for less than 3 days (10.0 g/L [8.2-12.4] vs 11.4 g/L [10.1-12.8]; P < .05) and in patients who received oral corticosteroid therapy for more than 5 days compared with those treated with oral steroids for less than 5 days (10.1 g/L [8.3-12.2] vs 11.6 g/L [10.0-13.8]; P < .05).

conclusionsSerum IgG level was significantly lower when asthma exacerbations were associated with positive viral samples. The patients with lower serum IgG concentrations required longer hospitalizations and longer courses of steroids.

Indexed as

Length of StayAdministration, OralAdrenal Cortex HormonesAdultAsthmaCoronavirus InfectionsDisease ProgressionEnterovirus InfectionsFemaleHospitalizationHumansImmunoglobulin GInfluenza, HumanMaleMiddle AgedMultiplex Polymerase Chain ReactionAdrenal Cortex HormonesImmunoglobulin GAsthmaExacerbationIgGVirus

Identifiers

PMID30654200
PMCPMC7104119
OpenAlexW2909128196

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.