Cited by 14Influenza Virus Research StudiesImmune responses and vaccinationsRespiratory viral infections research

Influenza virus infection and bacterial clearance in young adult and aged mice.

Wyde, P. R., Six, H. R., Ambrose, M. W., Throop, B. J.·1989·Journal of Gerontology

Abstract

The effects of influenza A/Hong Kong/68 (H3N2) virus infection on clearance of bacteria (Staphylococcus aureus or Serratia marcescens) from lungs of young adult (8-week-old) and aged (2-year-old) CBA/2N mice were studied. No consistent differences in pulmonary bacterial clearance were observed in uninfected animals of either age group. However, both young and aged virus-infected mice consistently exhibited significantly reduced ability to clear challenge bacteria from their lungs compared to age-matched nonvirus-infected controls; this deficit was markedly more pronounced in virus-infected aged mice. The extra deficit seen in virus-infected aged animals did not correlate with pulmonary virus or interferon titers, or with severity of pulmonary histopathology. Moreover, the phagocytic and bactericidal activities of pulmonary macrophages and polymorphonuclear neutrophiles from virus-infected young and aged mice were comparable.

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Crossref · 10.1093/geronj/44.5.b118

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  • In animal models, influenza infection increases and prolongs bacterial growth due to reduced macrophage accumulation and decreased bacterial clearance from reduced phagocytic activity.

    “Many studies involving animal models have shown that influenza infection increases and prolongs bacterial growth, due to reduced macrophage accumulation and decreased bacterial clearance due to reduced phagocytic activity (Kleinerman et al., 1976; Wyde et al., 1989; Sun and Metzger, 2008).”

    From Secondary bacterial infections associated with influenza pandemics (2017) · cites this paper as Wyde et al., 1989

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Authors
Wyde, P. R., Six, H. R., Ambrose, M. W., & Throop, B. J.
Affiliations
Baylor College of Medicine (US)
Venue
Journal of Gerontology
Published
1989-09-01
Volume
44
Issue
5
Pages
B118-B124
ISSN
0022-1422 (ISSN-L)
OpenAlex
W2325783934
Cited by
14
References
0
Citations by year
2017: 1 · 2014: 1
FWCI
1.11
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Gerontology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1r03ag005854-01)
  • National Institute on Aging (R03 AG-05854)
  • National Institute of Allergy and Infectious Diseases (AI-62517)
Topics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Health Sciences › Medicine › Epidemiology › Respiratory viral infections research
Keywords
influenza, bacterial clearance, Staphylococcus aureus, Serratia marcescens, aged mice, immunosenescence, lung macrophages, neutrophils, phagocytosis, pulmonary infection, interferon
MeSH terms
Aging, Animals, Bacteria, Interferons, Lung, Macrophages, Mice, Inbred CBA, Neutrophils, Orthomyxoviridae Infections, Influenza A virus, Phagocytosis, Serratia marcescens, Staphylococcus aureus, Culture Techniques, Mice

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