Evidence map›Paper›PMID 29176767›Full record

ArticlePLoS pathogens2017

H1N1 influenza virus infection results in adverse pregnancy outcomes by disrupting tissue-specific hormonal regulation.

Elizabeth Q Littauer, E Stein Esser, Olivia Q Antao, Elena V Vassilieva, Richard W Compans, Ioanna Skountzou

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
4.7field-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

74 citing papers in PubMed, 1 synthesis or guideline pooled it, 119 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Maternal Immune Activation: Implications for Congenital Heart Defects.Clinical reviews in allergy & immunology · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Neurogenesis decreases in the offspring of mothers infected with influenza A virus.Frontiers in cellular and infection microbiology · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Pathogenesis of viral infections during pregnancy.Clinical microbiology reviews · 2024
    Review
  19. Article
  20. Review

14 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

6 authors at 1 institution in 1 country.

Elizabeth Q LittauerDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.ORCID http://orcid.org/0000-0001-6054-6943
E Stein EsserDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.ORCID http://orcid.org/0000-0002-3884-2516
Olivia Q AntaoDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.
Elena V VassilievaDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.
Richard W CompansDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.
Ioanna SkountzouDepartment of Microbiology & Immunology and Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia, United States of America.ORCID http://orcid.org/0000-0002-6429-244X
Emory University · US

Funding

NIAID NIH HHS HHSN272201400004C
6 · The paper itself

Abstract

Increased susceptibility to influenza virus infection during pregnancy has been attributed to immunological changes occurring before and during gestation in order to "tolerate" the developing fetus. These systemic changes are most often characterized by a suppression of cell-mediated immunity and elevation of humoral immune responses referred to as the Th1-Th2 shift. However, the underlying mechanisms which increase pregnant mothers' risk following influenza virus infection have not been fully elucidated. We used pregnant BALB/c mice during mid- to late gestation to determine the impact of a sub-lethal infection with A/Brisbane/59/07 H1N1 seasonal influenza virus on completion of gestation. Maternal and fetal health status was closely monitored and compared to infected non-pregnant mice. Severity of infection during pregnancy was correlated with premature rupture of amniotic membranes (PROM), fetal survival and body weight at birth, lung viral load and degree of systemic and tissue inflammation mediated by innate and adaptive immune responses. Here we report that influenza virus infection resulted in dysregulation of inflammatory responses that led to pre-term labor, impairment of fetal growth, increased fetal mortality and maternal morbidity. We observed significant compartment-specific immune responses correlated with changes in hormonal synthesis and regulation. Dysregulation of progesterone, COX-2, PGE2 and PGF2α expression in infected pregnant mice was accompanied by significant remodeling of placental architecture and upregulation of MMP-9 early after infection. Collectively these findings demonstrate the potential of a seasonal influenza virus to initiate a powerful pro-abortive mechanism with adverse outcomes in fetal health.

Indexed as

AnimalsDinoprostoneFemaleHormonesHumansInfluenza A Virus, H1N1 SubtypeInfluenza, HumanLungMaleMiceMice, Inbred BALB COrgan SpecificityPlacentaPregnancyPregnancy ComplicationsPregnancy OutcomeDinoprostoneHormonesProgesterone

Identifiers

PMID29176767
PMCPMC5720832
OpenAlexW2769354711

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.