Local innate immune responses and influenza virus transmission and virulence in ferrets. 2012

Taronna R Maines, and Jessica A Belser, and Kortney M Gustin, and Neal van Hoeven, and Hui Zeng, and Nicholas Svitek, and Veronika von Messling, and Jacqueline M Katz, and Terrence M Tumpey
Influenza Division, National Center for Immunization and Respiratory Disease, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. ttumpey@cdc.gov

Host innate immunity is the first line of defense against invading pathogens, including influenza viruses. Ferrets are well recognized as the best model of influenza virus pathogenesis and transmission, but little is known about the innate immune response of ferrets after infection with this virus. The goal of this study was to investigate the contribution of localized host responses to influenza virus pathogenicity and transmissibility in this model by measuring the level of messenger RNA expression of 12 cytokines and chemokines in the upper and lower respiratory tracts of ferrets infected with H5N1, H1N1, or H3N2 influenza viruses that exhibit diverse virulence and transmissibility in ferrets. We found a strong temporal correlation between inflammatory mediators and the kinetics and frequency of transmission, clinical signs associated with transmission, peak virus shedding, and virulence. Our findings point to a link between localized innate immunity and influenza virus transmission and disease progression.

UI MeSH Term Description Entries
D007113 Immunity, Innate The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from the presence of naturally occurring ANTI-INFECTIVE AGENTS, constitutional factors such as BODY TEMPERATURE and immediate acting immune cells such as NATURAL KILLER CELLS. Immunity, Native,Immunity, Natural,Immunity, Non-Specific,Resistance, Natural,Innate Immune Response,Innate Immunity,Immune Response, Innate,Immune Responses, Innate,Immunity, Non Specific,Innate Immune Responses,Native Immunity,Natural Immunity,Natural Resistance,Non-Specific Immunity
D008297 Male Males
D009976 Orthomyxoviridae Infections Virus diseases caused by the ORTHOMYXOVIRIDAE. Orthomyxovirus Infections,Infections, Orthomyxoviridae,Infections, Orthomyxovirus,Swine Influenza,Infection, Orthomyxoviridae,Infection, Orthomyxovirus,Influenza, Swine,Orthomyxoviridae Infection,Orthomyxovirus Infection
D012137 Respiratory System The tubular and cavernous organs and structures, by means of which pulmonary ventilation and gas exchange between ambient air and the blood are brought about. Respiratory Tract,Respiratory Systems,Respiratory Tracts,System, Respiratory,Tract, Respiratory
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D005289 Ferrets Semidomesticated variety of European polecat much used for hunting RODENTS and/or RABBITS and as a laboratory animal. It is in the subfamily Mustelinae, family MUSTELIDAE. Domestic Polecat,Domestic Polecats,European Polecat,European Polecats,Ferret,Mustela putorius,Mustela putorius furo,Polecat, Domestic,Polecat, European,Polecats, Domestic,Polecats, European
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014774 Virulence The degree of pathogenicity within a group or species of microorganisms or viruses as indicated by case fatality rates and/or the ability of the organism to invade the tissues of the host. The pathogenic capacity of an organism is determined by its VIRULENCE FACTORS. Pathogenicity
D016207 Cytokines Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner. Cytokine
D017201 Virus Shedding The expelling of virus particles from the body. Important routes include the respiratory tract, genital tract (important in INFECTIOUS DISEASE TRANSMISSION, VERTICAL), and intestinal tract. Viral Shedding,Shedding, Viral,Shedding, Virus

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