Evidence map›Paper›PMID 22679491›Full record

ArticlePloS one2012

Interleukin-6 is a potential biomarker for severe pandemic H1N1 influenza A infection.

Stéphane G Paquette, David Banner, Zhen Zhao, Yuan Fang, Stephen S H Huang, Alberto J Leόn, Derek C K Ng, Raquel Almansa, Ignacio Martin-Loeches, Paula Ramirez and 17 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed
8.8field-weighted citation impact, top 2% 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

89 citing papers in PubMed, 142 citations in OpenAlex.

  1. Trial
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  10. Innate immune role of IL-6 in influenza a virus pathogenesis.Frontiers in cellular and infection microbiology · 2025
    Review
  11. Article
  12. The role of viral diagnostic tests in respiratory tract infections: moving forward.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2024
    Review
  13. Article
  14. Article
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29 more citing papers are in PubMed but not listed here.

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

27 authors at 14 institutions in 4 countries.

Stéphane G PaquetteDivision of Experimental Therapeutics, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada.
David Banner
Zhen Zhao
Yuan Fang
Stephen S H Huang
Alberto J Leόn
Derek C K Ng
Raquel Almansa
Ignacio Martin-Loeches
Paula Ramirez
Lorenzo Socias
Ana Loza
Jesus Blanco
Paola Sansonetti
Jordi Rello
David Andaluz
Bianche Shum
Salvatore Rubino
Raul Ortiz de Lejarazu
Dat Tran
Giovanni Delogu
Giovanni Fadda
Sigmund Krajden
Barry B Rubin
Jesús F Bermejo-Martin
Alyson A Kelvin
David J Kelvin
University Health Network · CAInstituto de Estudios de Ciencias de la Salud de Castilla y León · ESUniversità Cattolica del Sacro Cuore · ITSt Joseph's Health Centre · CADeleted InstitutionHospital Son Llatzer · ESHospital Universitario de Valme · ESInstituto de Salud Carlos III · ESJunta de Castilla y León · ESShantou University · CNSociedad Española de Medicina Interna · ESUniversitat Autònoma de Barcelona · ESUniversity of Sassari · ITUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pandemic H1N1 influenza A (H1N1pdm) is currently a dominant circulating influenza strain worldwide. Severe cases of H1N1pdm infection are characterized by prolonged activation of the immune response, yet the specific role of inflammatory mediators in disease is poorly understood. The inflammatory cytokine IL-6 has been implicated in both seasonal and severe pandemic H1N1 influenza A (H1N1pdm) infection. Here, we investigated the role of IL-6 in severe H1N1pdm infection. We found IL-6 to be an important feature of the host response in both humans and mice infected with H1N1pdm. Elevated levels of IL-6 were associated with severe disease in patients hospitalized with H1N1pdm infection. Notably, serum IL-6 levels associated strongly with the requirement of critical care admission and were predictive of fatal outcome. In C57BL/6J, BALB/cJ, and B6129SF2/J mice, infection with A/Mexico/4108/2009 (H1N1pdm) consistently triggered severe disease and increased IL-6 levels in both lung and serum. Furthermore, in our lethal C57BL/6J mouse model of H1N1pdm infection, global gene expression analysis indicated a pronounced IL-6 associated inflammatory response. Subsequently, we examined disease and outcome in IL-6 deficient mice infected with H1N1pdm. No significant differences in survival, weight loss, viral load, or pathology were observed between IL-6 deficient and wild-type mice following infection. Taken together, our findings suggest IL-6 may be a potential disease severity biomarker, but may not be a suitable therapeutic target in cases of severe H1N1pdm infection due to our mouse data.

Indexed as

AnimalsBiomarkersFemaleInfluenza A Virus, H1N1 SubtypeInterleukin-6MiceMice, Inbred BALB CMice, Inbred C57BLOrthomyxoviridae InfectionsPandemicsViral LoadBiomarkersInterleukin-6

Identifiers

PMID22679491
PMCPMC3367995
OpenAlexW2019920909

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.