1921
Volume 75, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Oropouche, Caraparu, Guama, Guaroa, and Tacaiuma are viruses (genus Orthobunyavirus) that cause human febrile illnesses and encephalitis. The goal of this study was to evaluate the antiviral action of ribavirin on these orthobunyaviruses to achieve a therapeutical agent to treat the diseases caused by these viruses. results showed that ribavirin (50 μg/mL) had antiviral activity only on the Tacaiuma virus. Addition of guanosine in the culture reversed the antiviral effect of ribavirin on Tacaiuma virus, suggesting that ribavirin inhibited this virus by reducing the intra-cellular guanosine pool. Moreover, ribavirin was not an effective drug because it was unable to inhibit the death of the mice or virus replication in the brain. The results suggest that ribavirin has no antiviral activity on the Oropouche, Caraparu, Guama, Guaroa, or Tacaiuma viruses; consequently, ribavirin would not be a good therapeutical agent to treat these arboviruses.

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2017-11-17
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  • Received : 19 Apr 2006
  • Accepted : 21 Jul 2006

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