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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-6-6
pubmed:abstractText
The ability of Japanese encephalitis virus (JEV) and JEV-induced macrophage derived neutrophil chemotactic factor (MDF) to produce nitric oxide (NO), and the possible antiviral effect of NO during JEV infection, was investigated. Splenic macrophages of JEV infected mice produced maximum NO in vivo at day 7 post infection, and in vitro at 24 h after JEV stimulation. MDF-induced NO production was dose dependent and maximal at 60 min after MDF treatment. The response was sensitive to anti-MDF antibody treatment and the nitric oxide synthase inhibitor NG-monomethyl-L-arginine (L-NMMA). Pretreatment of mice with L-NMMA increased the mortality to 100% in JEV infected mice in vivo and inhibited NO production in vitro, while MDF stimulated macrophages inhibited virus replication with high levels of NO production. MDF treatment increased the survival rate of JEV infected mice. The findings thus demonstrate that MDF induces production of NO during JEV infection, which has an antiviral effect. This may be one of the important mechanisms of natural immunity in controlling the initial stages of JEV infection.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0959-9673
pubmed:author
pubmed:issnType
Print
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
165-72
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Antiviral effect of nitric oxide during Japanese encephalitis virus infection.
pubmed:affiliation
Postgraduate Department of Microbiology, King George's Medical College, Lucknow, India.
pubmed:publicationType
Journal Article