Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A mumps virus strain, which replicated in mouse lung after aerosol inhalation, was obtained by selective replication of a wild strain in L929 cells and by further passaging in mice by intraperitoneal inoculation. All of infected mice survived and rechallenge of the survived mice with the same virus resulted in no virus growth in the lung. Treatment of infected mice with antiserum against interferon (IFN) or asialo GM1 delayed virus clearance from lung. Mice at 5 weeks of age were also sensitive to the virus as well as those at 1 week. When injected intravenously, the virus could grow not only in lung but also in salivary glands, heart and spleen. Furthermore, the virus replicated in liver, spleen, pancreas and testis after intraperitoneal inoculation. Antibody response of mice infected by aerosol inhalation was slower than that of intraperitoneally infected ones in either IgG or IgM production. These results indicated that the adapted virus replicated in mouse lung by a natural route of infection and had a potential to cause systemic infection in mouse.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have determined the complete nucleotide sequences of a live attenuated hog cholera virus (HCV) and its progenitor strain. The viral RNA of each strain consisted of 12 298 nucleotides including untranslated regions of 373 and 228 bases at the 5′ and 3′ end, respectively. There was a single large open reading frame spanning 11 697 nucleotides which could encode a large protein of 3 899 amino acids with a calculated molecular weight of 438-kDa. We have found 225 nucleotide difference between the two strains, of which six were located in the untranslated region. Four-sixths of these differences resulted in amino acid substitutions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of virology 81 (1984), S. 13-24 
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mumps virus replication was examined in various culture cells derived from mice. Eight of 16 lymphoid cell lines and 4 of 13 non-lymphoid cell lines supported the replication of Vero cell-adapted Enders strain (EY) of mumps virus. EY strain replicated more efficiently in lymphoid cell lines than in non-lymphoid ones. T cell preference, however, was not observed in this study. The growth kinetics of EY strain in high yield cell lines such as EL-4, L1210 and NS-18 cells were similar to that in Vero cells, while in low yield cell lines such as DK, C243 and 203GL cells the growth patterns varied respectively. Nineteen kinds of primary culture cells of murine origin all proved not to be susceptible for EY strain, even when spleen cells were stimulated with lectins or allogeneic cells. Seven other strains of mumps virus were examined for their ability to replicate in EL-4, L1210 and L929 cells. Four and 6 strains replicated in EL-4 cells and L1210 cells respectively, although the growth patterns and yields varied in each virus-cell combinations. On the other hand, none of 7 strains showed sufficient replication in L929 cells.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of virology 88 (1986), S. 217-230 
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We studied the effect of antibodies and interferon (IFN) on L929 cells persistently infected with mumps virus (MuV). The persistent infection was maintained by horizontal transmission of the virus within the culture but was regulated by endogenously produced IFN (8). The maintenance of the persistently infected cells in the continuous presence of anti-MuV serum suppressed the production of infectious virus. No virus antigen-positive cells were detected beyond 14 passages. Once antiserum was removed from the seemingly “cured cultures”, however, a small number of antigenpositive cells appeared and the release of infectious virus into the culture fluid resumed. Even after 67 passages (200 days) of culture in the presence of anti-serum, the virus reappeared in the culture. At least 0.01 per cent of L929 cells in cultures maintained under antiserum harbored the virus without expression of virus antigen. The virus recovered from such cells was temperature sensitive. The infection of fresh L929 cells with the variant led to noncytocidal persistent infection which was maintained by propagation of virus-infected cells. MuV carrier cultures could be cured by serial cultivation in medium containing the mixture of antiserum and IFN. When L-MuV cells were subcultured with medium containing neutralizing monoclonal antibodies (MoAbs), antibody-resistant variant viruses were rapidly generated and selected. In the presence of IFN variant viruses resistant to IFN were generated. In view of the small amount of virus produced from persistently infected cells, variant viruses appeared to be generated in an unusually high frequency in carrier cultures. Thus, this experimental system may offer a usefulin vitro model for studying antigenic variation and generation of various variant viruses.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...