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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
8
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pubmed:dateCreated |
1998-9-8
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pubmed:abstractText |
Insulin-dependent diabetes mellitus (IDDM) is a disease that results from autoimmune destruction of the insulin-producing beta-cells in the pancreatic islets of Langerhans. The autoimmune response against islet beta-cells is believed to result from a disorder of immunoregulation. According to this concept, a T helper 1 (Th1) subset of T cells and their cytokine products, i.e. Type 1 cytokines--interleukin 2 (IL-2), interferon gamma (IFNgamma), and tumor necrosis factor beta (TNFbeta), dominate over an immunoregulatory (suppressor) Th2 subset of T cells and their cytokine products, i.e. Type 2 cytokines--IL-4 and IL-10. This allows Type 1 cytokines to initiate a cascade of immune/inflammatory processes in the islet (insulitis), culminating in beta-cell destruction. Type 1 cytokines activate (1) cytotoxic T cells that interact specifically with beta-cells and destroy them, and (2) macrophages to produce proinflammatory cytokines (IL-1 and TNFalpha), and oxygen and nitrogen free radicals that are highly toxic to islet beta-cells. Furthermore, the cytokines IL-1, TNFalpha, and IFNgamma are cytotoxic to beta-cells, in large part by inducing the formation of oxygen free radicals, nitric oxide, and peroxynitrite in the beta-cells themselves. Therefore, it would appear that prevention of islet beta-cell destruction and IDDM should be aimed at stimulating the production and/or action of Type 2 cytokines, inhibiting the production and/or action of Type 1 cytokines, and inhibiting the production and/or action of oxygen and nitrogen free radicals in the pancreatic islets.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Apr
|
pubmed:issn |
0006-2952
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
15
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pubmed:volume |
55
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1139-49
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:9719467-Autoimmunity,
pubmed-meshheading:9719467-Cytokines,
pubmed-meshheading:9719467-Diabetes Mellitus, Type 1,
pubmed-meshheading:9719467-Free Radicals,
pubmed-meshheading:9719467-Humans,
pubmed-meshheading:9719467-Islets of Langerhans,
pubmed-meshheading:9719467-Nitric Oxide,
pubmed-meshheading:9719467-Th1 Cells
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pubmed:year |
1998
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pubmed:articleTitle |
Cytokines and their roles in pancreatic islet beta-cell destruction and insulin-dependent diabetes mellitus.
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pubmed:affiliation |
Department of Medicine, University of Alberta, Edmonton, Canada.
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pubmed:publicationType |
Journal Article,
Review
|