The role of inducible nitric oxide synthase in the host response to Coxsackievirus myocarditis
1998; National Academy of Sciences; Volume: 95; Issue: 5 Linguagem: Inglês
10.1073/pnas.95.5.2469
ISSN1091-6490
AutoresCarlos Zaragoza, Christopher Ocampo, Marta Saura, Michelle K. Leppo, Xiao‐Qing Wei, Richard A. Quick, Salvador Moncada, Foo Y. Liew, Charles J. Lowenstein,
Tópico(s)Viral Infections and Immunology Research
ResumoThe host response to Coxsackievirus infection is complex, including T lymphocytes, B lymphocytes, natural killer cells, and macrophages. Although Coxsackievirus infection induces expression of inducible nitric oxide synthase (NOS2; EC 1.14.13.39 ) in macrophages, the precise role of NOS2 in the host response to Coxsackievirus myocarditis has been unclear. We show, by using mice homozygous for a disrupted NOS2 allele, that Coxsackievirus replicates to higher titers in NOS2 −/− mice, that the host lacking NOS2 clears virus more slowly than the wild-type host, and that myocarditis is much more severe in infected NOS2 −/− mice. These data show that NOS2 is crucial for the host response to Coxsackievirus in the mouse.
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