Authors: M. Buc; I. Shawkatová Authors‘ workplace: Imunologický ústav Lekárskej fakulty Univerzity Komenského, Bratislava, prednosta prof. MUDr. M. Buc, DrSc. Published in: Čes-slov Pediat 2002; (6): 299-305. Category:
Type IA diabetes mellitus is an autoimmune disease,the most common chronic illness of children and youngadults today.T cell mediated destruction of pancreatic islet cells is the hallmark of the disease.Both genetic andenvironmental factors are responsible for the induction of autoimmune reactions.Till now,20 genes or geneticregions were shown to contribute to a susceptibility to the disease development,those of the major histocompati-bility complex (HLA)and the insulin gene are of paramount importance.There is evidence that viral infectionsact as a triggering event of immunopathologic reactions.The immune response to a microbial determinant wouldcross-react with host tissues (molecular mimicry phenomenon)and eventually results in an autoimmune process.Proinflammatory cytokines and a breakdown of immune regulatory mechanisms contribute to an upregulation ofthe process and enable inflammatory reactions to flare.
Key words: DM-1A,HLA-complex,T-lymphocytes,NKT cells,cytokines,viruses
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