NanoViricides Drugs Found to be Highly Effective Against H5N1 Avian Flu Virus
News May 10, 2007
NanoViricides, Inc. presented results of recent animal studies against rabies and BSL3 in vitro studies against a Clade 2 H5N1 (avian influenza) virus at the 23rd Annual Symposium of the Pan American Society for Clinical Virology in Tampa, FL, on Wednesday, May 2.
The BSL3 studies against Clade 2 H5N1, a Dec. 2006 isolate in Vietnam, showed that the nanoviricide developed against Highly Pathogenic Influenzas, FluCide-HP™, was highly effective in suppressing cytopathic effects (CPE), whereas the broad-spectrum nanoviricide against all influenzas, FluCide™, was slightly less effective than AviFluCide-HP.
These findings were expected. Both of these candidates were significant effective than oseltamivir (Tamiflu®) in this blind study performed by the National Institute of Hygiene and Epidemiology (NIHE) scientists in Vietnam.
In addition, the antibody-fragment-based H5N1 specific AviFluCide™ drug candidate was demonstrated by Vietnam scientists to suppress CPE against this rgH5N1 strain (Clade 1), confirming previous results. The Highly Pathogenic H5N1 subtype of influenza continues to evolve and is now found in two distinct subgroups, Clade 1 and Clade 2.
According to CDC scientists, the Vietnam 2004/2005 strains belong to Clade 1, whereas the Indonesia 2006 (2007), Egypt 2006, and Vietnam 2006 (2007) strains are different and form the Clade 2 subgroup. The various Clade 2 strains are antigenically distinct from each other, but closer to each other than to Clade 1 strains.