Evidence map›Paper›PMID 24563256›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2014

Influenza infection suppresses NADPH oxidase-dependent phagocytic bacterial clearance and enhances susceptibility to secondary methicillin-resistant Staphylococcus aureus infection.

Keer Sun, Dennis W Metzger

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

78 citing papers in PubMed, 120 citations in OpenAlex.

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  11. Antimicrobial activity and mechanism of anti-MRSA of phloroglucinol derivatives.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2024
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  19. Invasive Pulmonary Aspergillosis.Journal of fungi (Basel, Switzerland) · 2023
    Review
  20. Article

18 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

2 authors at 1 institution in 1 country.

Keer SunCenter for Immunology and Microbial Disease, Albany Medical College, Albany, NY 12208.
Dennis W Metzger
Albany Medical Center Hospital · US

Funding

Oxidative Burst in Influenza and MRSA Co-infectionR01HL118408 · NHLBI · UNIVERSITY OF TEXAS MED BR GALVESTON · PI SUN, KEER · 2013 to 2022
$3.9M
Identification of genes that affect peak BMD in men and womenR01AG041517 · NIA · INDIANA UNIVERSITY INDIANAPOLIS · PI ECONS, MICHAEL J · 2011 to 2015
$2.9M
Effect of Influenza Infection on Alveolar Macrophage FunctionR01AI075312 · NIAID · ALBANY MEDICAL COLLEGE · PI METZGER, DENNIS W · 2009 to 2012
$1.6M
NHLBI NIH HHS R01 HL118408NIAID NIH HHS R01 AI075312NIAID NIH HHS R01 AI41517NIAID NIH HHS R01 AI75312NIA NIH HHS R01 AG041517
6 · The paper itself

Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) has emerged as a leading contributor to mortality during recent influenza pandemics. The mechanism for this influenza-induced susceptibility to secondary S. aureus infection is poorly understood. In this study, we show that innate antibacterial immunity was significantly suppressed during the recovery stage of influenza infection, even though MRSA superinfection had no significant effect on viral burdens. Compared with mice infected with bacteria alone, postinfluenza MRSA-infected mice exhibited impaired bacterial clearance, which was not due to defective phagocyte recruitment, but rather coincided with reduced intracellular reactive oxygen species levels in alveolar macrophages and neutrophils. NADPH oxidase is responsible for reactive oxygen species production during phagocytic bacterial killing, a process also known as oxidative burst. We found that gp91(phox)-containing NADPH oxidase activity in macrophages and neutrophils was essential for optimal bacterial clearance during respiratory MRSA infections. In contrast to wild-type animals, gp91(phox-/-) mice exhibited similar defects in MRSA clearance before and after influenza infection. Using gp91(phox+/-) mosaic mice, we further demonstrate that influenza infection inhibits a cell-intrinsic contribution of NADPH oxidase to phagocyte bactericidal activity. Taken together, our results establish that influenza infection suppresses NADPH oxidase-dependent bacterial clearance and leads to susceptibility to secondary MRSA infection.

Indexed as

AnimalsCellsCytotoxicity, ImmunologicFemaleFlow CytometryHost-Pathogen InteractionsInfluenza A Virus, H1N1 SubtypeLungMacrophages, AlveolarMaleMembrane GlycoproteinsMethicillin-Resistant Staphylococcus aureusMiceMice, Inbred C57BLMice, KnockoutNADPH Oxidase 2Cybb protein, mouseMembrane GlycoproteinsNADPH Oxidase 2NADPH OxidasesReactive Oxygen Species

Identifiers

PMID24563256
PMCPMC3965630
OpenAlexW1553473844

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.