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Updated: Jul 31, 2026

Influenza A Virus Studies in a Mouse Model of Infection
Published on: September 7, 2017
[Interferon-inducing effect of influenza viruses following aerogenic and oral administration in NMRI mice]
Abstract:
The aim of our study was to investigate the interferoninducing effect of aerogenic or oral uptake of influenza viruses in animals. NMRI-mice were infected with mouse-adapted influenza viruses (A/PR/8/34, H1 N1) by aerogen and oral route. In one-day-intervals interferon titers were determined in lung lavage fluids and in lung tissues within nine days after infection. The aerogenic infection led to an increase in interferon followed by a plateau and followed by a slope. The same course of interferon given in lower values was seen in animals after oral virus uptake. The results support the idea of a stimulation of local defense mechanisms in the lung after oral antigen uptake.
Insights
Influenza virus infection in mice stimulates interferon production. Oral virus uptake also triggers interferon, suggesting enhanced local lung defense mechanisms.
Area of Science:
- Immunology
- Virology
Context:
- Influenza viruses pose a significant public health threat.
- Understanding host immune responses to influenza is crucial for developing effective countermeasures.
Purpose:
- To investigate the interferon-inducing effects of aerogenic (inhalation) and oral influenza virus uptake in a mouse model.
- To compare the kinetics of interferon production following different routes of viral exposure.
Summary:
- NMRI mice were infected with mouse-adapted influenza A (H1N1) virus via aerosol or oral administration.
- Interferon titers in lung lavage fluid and tissue were measured over nine days post-infection.
- Both infection routes induced interferon, with aerogenic infection showing a more pronounced response, supporting local lung defense stimulation by oral antigen uptake.
Impact:
- Provides insights into the innate immune response to influenza virus via different exposure routes.
- Suggests that oral antigen uptake can stimulate local pulmonary defense mechanisms.
- Contributes to understanding host-pathogen interactions in respiratory viral infections.
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