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Effector mechanisms in low-dose streptozotocin-induced diabetes
The cellular and molecular requirements for beta-cell damages in an immune-mediated toxin-induced insulin-dependent diabetes mellitus have been studied in the model of multiple low-dose streptozotocin-induced diabetes in rats and mice. It was found that strain-related susceptibility to diabetes indu...
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Published in: | Clinical & developmental immunology 1998, Vol.6 (1-2), p.119-128 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | The cellular and molecular requirements for beta-cell damages in an immune-mediated toxin-induced insulin-dependent diabetes mellitus have been studied in the model of multiple low-dose streptozotocin-induced diabetes in rats and mice. It was found that strain-related susceptibility to diabetes induction correlated with a higher level of IL-2, IFN-gamma, and TNF-alpha production, whereas such differences were not observed when IL-1 and NO production by macrophages were analyzed; elimination of immunoregulatory RT6+T cells that increases IFN-gamma production, enhances susceptibility to MLD-STZ-induced diabetes; mercury-induced Th-2 cells down-regulated the disease; IFN-gamma-mediated macrophage activation to produce proinflammatory cytokines rather than NO is an important event in early diabetogenic effects of invading macrophages; inhibition of IL-1 activity downregulates diabetes induction; and generation of NO in beta cells appears to be important for diabetogenic effects. Taken together, data indicate that MLD-STZ diabetes induced by Th-1 lymphocytes that secrete soluble effector molecules that activate macrophages and promote destruction of beta cells possibly by both nitric oxide and nonnitric oxide-mediated mechanisms. |
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ISSN: | 1044-6672 2314-8861 1740-2522 2314-7156 1740-2530 |
DOI: | 10.1155/1998/92198 |