Abstract:
:We have reported previously that subclinical prolonged mild T helper (Th) 1-dependent autoimmune insulitis with impaired glucose tolerance in wealing DBA/1J mice, which is induced by the combined effects of reovirus type 2 (Reo-2) and synthetic 20-base oligodeoxynucleotides with CpG motifs (CpG ODN) (control mice). Compared with the control mice, newborn mice treated with monoclonal antibody (MoAb) against mouse CD25(+) CD4(+) T cells together with Reo-2 and CpG ODN greatly reduced the absolute number of splenic CD25(+) T cells and resulted in the development of severe insulitis, leading to an overt early diabetes. Moreover, the treatment of the MoAb increased production of interferon-gamma (IFN-gamma) and decreased that of interleukin-4 (IL-4) and transforming growth factor-beta1 (TGF-beta1) and developed high titre of autoantibodies against pancreatic islet cells. These evidences suggest that CD4(+) CD25(+) T cell may, at least in part, maintain tolerance to Reo-2-triggered and CpG ODN-induced prolonged mild Th1-dependent autoimmune insulitis, leading to the overt disease. This system may give a novel model to elucidate the mechanisms of the development of overt diabetes from borderline subclinical diabetes in virus-triggered autoimmune type I diabetes in human.
journal_name
Scand J Immunoljournal_title
Scandinavian journal of immunologyauthors
Hayashi T,Hasegawa K,Sasaki Y,Onodera Tdoi
10.1111/j.1365-3083.2005.01717.xkeywords:
subject
Has Abstractpub_date
2006-02-01 00:00:00pages
116-24issue
2eissn
0300-9475issn
1365-3083pii
SJI1717journal_volume
63pub_type
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