Article: article from journal or magazin.
Prevention of diabetes in nonobese diabetic mice by tumor necrosis factor (TNF): similarities between TNF-alpha and interleukin 1.
Proceedings of the National Academy of Sciences of the United States of America
The role of tumor necrosis factor alpha (TNF-alpha) in the pathogenesis of autoimmune diabetes mellitus was tested in the nonobese mouse (NOD) model system. The effects of TNF-alpha were assessed on three levels: (i) insulitis development, (ii) development of overt diabetes, (iii) adoptive transfer of diabetes by splenic lymphocytes. Spontaneous diabetes mellitus was blocked in NOD mice by long-term treatment with recombinant TNF-alpha. Treatment with TNF-alpha caused a significant reduction in the lymphocytic infiltration associated with the destruction of the insulin-producing beta cells. Class II major histocompatibility complex Ia expression by islet cells was not up-regulated by TNF-alpha. Moreover, TNF-alpha was able to suppress the induction of diabetes in adoptive transfer of lymphocytes from diabetic female mice to young nondiabetic male NOD mice. These activities of TNF-alpha were shared by interleukin 1 alpha in this system. These studies have implications for the pathogenesis and therapy of autoimmune diabetes mellitus.
Animals, Autoimmune Diseases/pathology, Autoimmune Diseases/prevention &, control, Diabetes Mellitus, Experimental/immunology, Diabetes Mellitus, Experimental/pathology, Female, Immunization, Passive, Interleukin-1/therapeutic use, Islets of Langerhans/pathology, Lymphocytes/immunology, Male, Mice, Mice, Inbred BALB C, Mice, Mutant Strains, Recombinant Proteins/therapeutic use, Tumor Necrosis Factor-alpha/therapeutic use
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