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Findings point to potential treatment for virus causing childhood illnesses
Date:1/29/2014

WEST LAFAYETTE, Ind. - Researchers have discovered a potential treatment for a viral infection that causes potentially fatal brain swelling and paralysis in children. The findings also point to possible treatments for related viruses including those that cause "common cold" symptoms.

The virus, called enterovirus 71 (EV71), causes yearly outbreaks of hand, foot, and mouth disease in Southeast Asian countries including China and Malaysia. Some of the infected children develop encephalitis that can be fatal or result in permanent brain damage. There are no anti-EV71therapeutic agents available.

The researchers prepared antibodies by immunizing mice with immature EV71 particles. Antibodies generated by this immunization induced a change in the mature EV71 virus, rendering it non-infectious by causing the virus particles to lose their genome.

The findings reveal a potential treatment mechanism, demonstrating that the antibody, called E18, has potential as an anti-EV71 therapy, said Michael G. Rossmann, Purdue's Hanley Distinguished Professor of Biological Sciences.

Findings are being reported this week in Proceedings of the National Academy of Sciences. The paper was authored by Purdue postdoctoral research associate Pavel Plevka; Pei-Yin Lim, a researcher from Sentinext Therapeutics in Penang, Malaysia; Purdue research scientist Rushika Perera; Jane Cardosa, a researcher at Sentinext and MAB Explorations in Malaysia; Purdue graduate student Ampa Suksatu; Richard J. Kuhn, a professor and head of Purdue's Department of Biological Sciences; and Rossmann.

EV71 belongs to a family of viruses called picornaviruses, pathogens that cause diseases including common-cold-like illnesses and poliomyelitis in people and chronic infections in livestock.

"The antibody-mediated virus neutralization by the induction of genome release has not been previously demonstrated," Rossmann said. "These results indicate that antibod
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Contact: Emil Venere
venere@purdue.edu
765-494-4709
Purdue University
Source:Eurekalert  

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