Duck Virus Hepatitis
ثبت نشده
چکیده
Hepatitis in ducks can be caused by at least three different viruses. The more common and 4 internationally widespread is duck hepatitis virus (DHV) type I, a member of the Picornaviridae in 5 the proposed new genus Avihepatovirus [now designated as an unclassified picornavirus], which causes 6 a highly lethal, acute, contagious infection in ducklings under 6 weeks of age and, frequently, under 7 3 weeks of age. It does not occur in older birds. This infection is often referred to simply as duck 8 virus hepatitis. Three genotypes and maybe serotypes of DHV type I have been identified and 9 designated duck hepatitis A virus (DHAV) types 1, 2 and 3. 10
منابع مشابه
Biological efficacy and signal transduction through STAT proteins of recombinant duck interferon in duck hepatitis B virus infection.
The aim of this study was to characterize the interferon induced intracellular signals in duck hepatocytes and to investigate the effects of duck interferon on virus replication in duck hepatitis B virus (DHBV) infected ducks. Interestingly, duck interferon was found to activate intracellular signal transduction pathways similar to those of its mammalian counterparts. An interferon stimulated g...
متن کاملGel diffusion method for determining the titer of duck hepatititis virus.
Apparatus necessary for a quantitative gel diffusion and precipitation assay of duck hepatitis virus was designed and constructed.
متن کاملSuramin prevents duck hepatitis B virus infection in vivo.
The effect of suramin on duck hepatitis B virus (DHBV) infection was investigated in vivo. Suramin pretreatment of Pekin ducklings completely prevented DHBV infection. In contrast, suramin given at the time of or after inoculation with DHBV did not inhibit viral infection, replication, or gene expression. These data indicate that suramin effectively blocks the early stages of DHBV infection in ...
متن کاملExpression of the active human and duck hepatitis B virus polymerases in heterologous system of Pichia methanolica.
We expressed the Hepatitis B virus polymerase (HBV P protein) using a recently introduced yeast system, Pichia methanolica. HBV (1-680 amino acids) and Duck Hepatitis B virus (DHBV, 1-780 amino acids) polymerase were expressed and showed DNA dependent DNA polymerase (DDDP). The DHBV polymerase had RNA dependent DNA polymerase (RDDP) and RNase H activities. We present a new simplified way of obt...
متن کاملDuck hepatitis B virus virion secretion requires a double-stranded DNA genome.
Hepatitis B virus assembly begins with the packaging of an RNA pregenome into intracellular nucleocapsids, with subsequent reverse transcription within these nucleocapsids converting the RNA into a characteristic, partially double-stranded DNA, which, alone, is found in enveloped extracellular virions as the viral genome. Using a synchronized replication system for the duck hepatitis B virus, t...
متن کامل