In a previous study the researchers utilized a neonatal mouse model of coxsackievirus B3 (CVB3) to determine that stem cells in the central nervous system were preferentially targeted by the virus. The later stages of infection were the focus of this study in which the researchers examined the ensuing inflammatory response and lesions remaining in the adult central nervous systems of surviving mice from the previous model. Results showed high levels of interferons and chemokines up to 10 days postinfection as well as chronic inflammation and lesions in the brains of surviving mice up to 9 months postinfection. Additionally, CVB3 RNA was detected in the central nervous system at high abundance up to 3 months postinfection.
"These data suggest that CVB3 may persist in the CNS as a low-level, noncytolytic infection, causing ongoing inflammatory lesions," say the researchers. "Thus, the effects of a relatively common infection during the neonatal period may be long lasting, and the prognosis for newborn infants recovering from acute infection should be reexplored."
(R. Feuer, C.M. Ruller, N. An, J.M. Tobar-Godwin, R.E. Rhoades, S. Maciejewski, R.R. Pagarigan, C.T. Cornell, S.J. Crocker, W.B. Kiosses, N. Pham-Mitchell, I.L. Campbell, J.L. Whitton. 2009. Viral persistence and chronic immunopathology in the adult central nervous system following coxsackievirus infection during the neonatal period. Journal of Virology, 83. 18: 9356-9369.)
|Contact: Carrie Slijepcevic|
American Society for Microbiology