Evidence map›Paper›PMID 34348975›Full record

Observational studyJournal of immunology (Baltimore, Md. : 1950)2021

Comprehensive Immunologic Evaluation of Bronchoalveolar Lavage Samples from Human Patients with Moderate and Severe Seasonal Influenza and Severe COVID-19.

Daniel Reynolds, Cristina Vazquez Guillamet, Aaron Day, Nicholas Borcherding, Rodrigo Vazquez Guillamet, José Alberto Choreño-Parra, Stacey L House, Jane A O'Halloran, Joaquín Zúñiga, Ali H Ellebedy and 2 more

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study in Journal of immunology (Baltimore, Md. : 1950), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.5field-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

28 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
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  5. Article
  6. Review
  7. Article
  8. Utility of Protein Markers in COVID-19 Patients.International journal of molecular sciences · 2025
    Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Influenza.Lancet (London, England) · 2022
    Review
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

12 authors at 2 institutions in 2 countries.

Daniel ReynoldsDivision of Pulmonology and Critical Care, Department of Medicine, Washington University School of Medicine, Saint Louis, MO.
Cristina Vazquez GuillametDivision of Pulmonology and Critical Care, Department of Medicine, Washington University School of Medicine, Saint Louis, MO.
Aaron DayDepartment of Emergency Medicine, Washington University School of Medicine, Saint Louis, MO.
Nicholas BorcherdingDepartment of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO.
Rodrigo Vazquez GuillametDivision of Pulmonology and Critical Care, Department of Medicine, Washington University School of Medicine, Saint Louis, MO.ORCID 0000-0002-4190-946X
José Alberto Choreño-ParraInstituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México City, México.
Stacey L HouseDepartment of Emergency Medicine, Washington University School of Medicine, Saint Louis, MO.ORCID 0000-0003-1161-4529
Jane A O'HalloranDivision of Infectious Diseases, Department of Medicine, Washington University School of Medicine, Saint Louis, MO.ORCID 0000-0001-8265-9471
Joaquín ZúñigaInstituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México City, México.
Ali H EllebedyDepartment of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO.
Derek E ByersDivision of Pulmonology and Critical Care, Department of Medicine, Washington University School of Medicine, Saint Louis, MO.
Philip A MuddDepartment of Emergency Medicine, Washington University School of Medicine, Saint Louis, MO; pmudd@wustl.edu.ORCID 0000-0002-3860-5473
Washington University in St. Louis · USInstituto Nacional de Enfermedades Respiratorias · MX

Funding

WU INSTITUTE OF CLINICAL AND TRANSLATIONAL SCIENCESUL1TR002345 · NCATS · WASHINGTON UNIVERSITY · PI William G. Powderly · 2017 to 2026
$97.8M
NCATS NIH HHS UL1 TR002345
6 · The paper itself

Abstract

Infection with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) or seasonal influenza may lead to respiratory failure requiring intubation and mechanical ventilation. The pathophysiology of this respiratory failure is attributed to local immune dysregulation, but how the immune response to viral infection in the lower airways of the human lung differs between individuals with respiratory failure and those without is not well understood. We used quantitative multiparameter flow cytometry and multiplex cytokine assays to evaluate matched blood and bronchoalveolar lavage (BAL) samples from control human subjects, subjects with symptomatic seasonal influenza who did not have respiratory failure, and subjects with severe seasonal influenza or SARS-CoV-2 infection with respiratory failure. We find that severe cases are associated with an influx of nonclassical monocytes, activated T cells, and plasmablast B cells into the lower airways. Cytokine concentrations were not elevated in the lower airways of moderate influenza patients compared with controls; however, 28 of 35 measured cytokines were significantly elevated in severe influenza, severe SARS-CoV-2 infection, or both. We noted the largest elevations in IL-6, IP-10, MCP-1, and IL-8. IL-1 family cytokines and RANTES were higher in severe influenza infection than severe SARS-CoV-2 infection. Interestingly, only the concentration of IP-10-correlated between blood and BAL during severe infection. Our results demonstrate inflammatory immune dysregulation in the lower airways during severe viral pneumonia that is distinct from lower airway responses seen in human patients with symptomatic, but not severe, illness and suggest that measurement of blood IP-10 concentration may predict this unique dysregulation.

Indexed as

AdultAgedBlood ProteinsBronchoalveolar Lavage FluidChemokine CXCL10Cohort StudiesCOVID-19FemaleHumansInflammation MediatorsInfluenza A virusInfluenza, HumanMaleMiddle AgedPneumonia, ViralProspective StudiesBlood ProteinsChemokine CXCL10Inflammation Mediators

Identifiers

PMID34348975
PMCPMC8387368
OpenAlexW3193092192

What OpenQuestion holds

Textmetadata
LicenceTDM
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.