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    Microbial pathogen contamination in mouse gametes and embryos

    Zhang, Lin, 1974 Dec. 4-
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    Date
    2008
    Format
    Thesis
    Metadata
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    Abstract
    Large numbers of transgenic and knockout mice have been generated. Cryopreservation provides an efficient and effective way to maintain these unique genetically modified rodent lines. However, there is a great risk of transmitting various diseases via the cryopreserved gametes and embryos. To investigate which of the commonly found murine pathogens contaminate mouse gametes and embryos, seven commonly found pathogens in research mice were evaluated in semen, oocyte-cumulus complexes and embryos collected from naturally infected mice in the first part of my study. These seven pathogens are: mouse parvovirus, Helicobacter, Mycoplasma pulmonis, Pasteurella pneumotropica, murine norovirus, mouse hepatitis virus and Theiler's murine encephalomyelitis virus. Five pathogens, mouse parvovirus, Helicobacter, mouse hepatitis virus, murine norovirus, Theiler's encephalomyelitis virus, were found in mouse gametes and embryos. These findings indicate there is a potential risk of transmitting microbial pathogens via cryopreserved gametes and embryos. The second part of this study focused on evaluating mouse parvovirus and determining the effect of infection in male mice on in vitro fertilization including how it will change fertilization rate, cleavage rate and embryonic development and whether mouse parvovirus transmits to embryos at blastocyst stage. We did not find mouse parvovirus-1 infection in male mice transmitted to in vitro produced embryos and there was no effect on fertilization rate, cleavage rate and embryonic development following in vitro fertilization.
    URI
    https://doi.org/10.32469/10355/5671
    https://hdl.handle.net/10355/5671
    Degree
    M.S.
    Thesis Department
    Microbiology (Medicine) (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • 2008 MU theses - Freely available online
    • Molecular Microbiology and Immunology electronic theses and dissertations (MU)

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