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  • Title: A protective role of gamma delta T cells in primary infection with Listeria monocytogenes in autoimmune non-obese diabetic mice.
    Author: Usami J, Hiromatsu K, Matsumoto Y, Maeda K, Inagaki H, Suzuki T, Yoshikai Y.
    Journal: Immunology; 1995 Oct; 86(2):199-205. PubMed ID: 7490118.
    Abstract:
    We investigated the host defense mechanism in primary infection with Listeria monocytogenes in non-obese diabetic (NOD) mice at pre-diabetic stage showing an impaired responsiveness of the alpha beta T cells to T-cell receptor (TCR) triggering. The NOD mice showed a deteriorated resistance at the late stage after an intraperitoneal infection with L. monocytogenes compared with BALB/c and C57BL/6 mice as assessed by bacterial growth in organs. Consistent with our previous findings, a prominent increase in number of gamma delta T cells was evident at the early stage after infection, while generation of Listeria-specific alpha beta T cells was impaired in these mice. In vivo administration of anti-TCR gamma delta monoclonal antibody (mAb) allowed L. monocytogenes to grow exaggeratedly in the NOD mice. These results imply that gamma delta T cells may be mainly involved in protection against primary infection with L. monocytogenes in NOD mice.
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