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Pneumonia virus of mice: severe respiratory infection in a natural host Rosenberg HF; Domachowske JBImmunol Lett 2008[Jun]; 118 (1): 6-12Pneumonia virus of mice (PVM; family Paramyxoviridae, genus Pneumovirus) is a natural mouse pathogen that is closely related to human and bovine respiratory syncytial viruses. Among the prominent features of this infection, robust replication of PVM takes place in bronchial epithelial cells in response to a minimal virus inoculum. Virus replication in situ results in local production of proinflammatory cytokines (MIP-1alpha, MIP-2, MCP-1 and IFNgamma) and granulocyte recruitment to the lung. If left unchecked, PVM infection and the ensuing inflammatory response ultimately lead to pulmonary edema, respiratory compromise and death. In this review, we consider the recent studies using the PVM model that have provided important insights into the role of the inflammatory response in the pathogenesis of severe respiratory virus infection. We also highlight several works that have elucidated acquired immune responses to this pathogen, including T cell responses and the development of humoral immunity. Finally, we consider several immunomodulatory strategies that have been used successfully to reduce morbidity and mortality when administered to PVM-infected, symptomatic mice, and thus hold promise as realistic therapeutic strategies for severe respiratory virus infections in human subjects.|Animals[MESH]|Genome, Viral/genetics[MESH]|Humans[MESH]|Hypersensitivity/immunology[MESH]|Mice[MESH]|Pneumovirus Infections/drug therapy/immunology/metabolism/virology[MESH]|Pneumovirus/pathogenicity/*physiology[MESH]|Respiratory Tract Infections/drug therapy/immunology/metabolism/*virology[MESH]|T-Lymphocytes/immunology[MESH] |
