Evidence map›Paper›PMID 27815260›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2016

Age and testosterone mediate influenza pathogenesis in male mice.

Landon G Vom Steeg, Meghan S Vermillion, Olivia J Hall, Ornob Alam, Ross McFarland, Haolin Chen, Barry Zirkin, Sabra L Klein

Open access · bronzeAbstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 3% 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

57 citing papers in PubMed, 1 synthesis or guideline pooled it, 79 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Biological sex influences immune response to influenza infection in juvenile outbred mice.American journal of physiology. Lung cellular and molecular physiology · 2026
    Article
  5. Article
  6. Article
  7. Androgens are a Key Factor Affecting Immune Related Diseases.The world journal of men's health · 2026
    Review
  8. Review
  9. Review
  10. The conneXion between sex and immune responses.Nature reviews. Immunology · 2024
    Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Review
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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

8 authors at 1 institution in 1 country.

Landon G Vom SteegW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd.
Meghan S VermillionW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd.
Olivia J HallW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd.
Ornob AlamW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd.
Ross McFarlandW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd.
Haolin ChenDepartment of Biochemistry and Molecular Biology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; and.
Barry ZirkinDepartment of Biochemistry and Molecular Biology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; and.
Sabra L KleinW. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryalnd; Sklein2@jhu.edu.
Johns Hopkins University · US

Funding

Training: Molecular & Cellular Bases of Infectious DiseasesT32AI007417 · NIAID · JOHNS HOPKINS UNIVERSITY · PI Arturo Casadevall · 1994 to 2026
$11.9M
Training Veterinarians for Careers in Biomedical ResearchT32OD011089 · OD · JOHNS HOPKINS UNIVERSITY · PI JOSEPH L MANKOWSKI · 2012 to 2026
$6.7M
Age and testosterone effects on responses to influenza infection and vaccinationR21AI112838 · NIAID · JOHNS HOPKINS UNIVERSITY · PI KLEIN, SABRA L. · 2014 to 2015
$446k
NIAID NIH HHS HHSN272201400007CNIAID NIH HHS R21 AI112838NIAID NIH HHS T32 AI007417NIH HHS T32 OD011089
6 · The paper itself

Abstract

Influenza severity increases with age, with hospitalization and mortality rates during seasonal influenza epidemics being higher in older men than age-matched women. As it is known that with age, circulating testosterone levels decline in males, we hypothesized that reduced testosterone contributes to age-associated increases in influenza severity. A murine model was used to test this hypothesis. As in men, testosterone concentrations were lower in aged (18 mo) than young (2 mo) male C57BL/6 mice. Following inoculation with influenza A virus (IAV), aged males experienced greater morbidity, clinical disease, and pulmonary inflammation than young males, and had lower neutralizing and total anti-influenza IgG antibody responses. Peak titers of virus in the lungs did not differ between aged and young males, but virus clearance was delayed in aged males. In young males, removal of the gonads increased-whereas treatment of gonadectomized males with testosterone reduced-morbidity, clinical illness, and pulmonary pathology, but viral replication was not altered by hormone manipulation in young males. Treatment of aged males with testosterone improved survival following infection but did not alter either virus replication or pulmonary pathology. These results indicate that low concentrations of testosterone, whether induced surgically in young males or naturally occurring in aged males, negatively impact the outcome of influenza.

Indexed as

AgingAnimalsAntibodies, NeutralizingAntibody FormationImmunoglobulin GInfluenza A virusMaleMice, Inbred C57BLOrthomyxoviridae InfectionsPneumoniaTestosteroneAntibodies, NeutralizingImmunoglobulin GTestosterone2009 H1N1androgenelderlypulmonary inflammationsex steroids

Identifiers

PMID27815260
PMCPMC5206399
OpenAlexW2547598804

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.