alexa Beta cell death and protection.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): MandrupPoulsen T

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Abstract Type 1 diabetes is an immune-mediated disease critically dependent upon the interaction between antigen-presenting cells and T cells. Clearly, both CD4+ and CD8+ T cells are required, but activated CD4+ T cells are both necessary and sufficient in causing disease. The mechanism of the Th1/Th2 immunoregulatory imbalance is unclear and needs to be further investigated. CD8+ T cells are not commonly sufficient in causing disease, but CD8 T cells are necessary in initiation (<14 weeks in the NOD mouse), but not in the later (>14 weeks) effector phase of the disease. It is still unclear whether the CD8+ T cell exerts its function as a classical effector cell or mainly as an immunomodulatory cell acting in synergy with the CD4+ T cell. The relative role of T cell effector mechanisms such as Fas/FasL, perforin/granzyme, and the TRAIL systems is unclear. Proinflammatory cytokines, reactive oxygen species, and other immune mediators seem to be involved in beta cell destruction, but much is to be learned about signaling, molecular mechanisms, and in vivo importance.
This article was published in Ann N Y Acad Sci and referenced in Journal of Clinical & Cellular Immunology

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