• N. Engl. J. Med. · Nov 2010

    Randomized Controlled Trial Multicenter Study

    Dietary intervention in infancy and later signs of beta-cell autoimmunity.

    • Mikael Knip, Suvi M Virtanen, Karri Seppä, Jorma Ilonen, Erkki Savilahti, Outi Vaarala, Antti Reunanen, Kari Teramo, Anu-Maaria Hämäläinen, Johanna Paronen, Hans-Michael Dosch, Timo Hakulinen, Hans K Akerblom, and Finnish TRIGR Study Group.
    • Hospital for Children and Adolescents, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland. mikael.knip@helsinki.fi
    • N. Engl. J. Med. 2010 Nov 11;363(20):1900-8.

    BackgroundEarly exposure to complex dietary proteins may increase the risk of beta-cell autoimmunity and type 1 diabetes in children with genetic susceptibility. We tested the hypothesis that supplementing breast milk with highly hydrolyzed milk formula would decrease the cumulative incidence of diabetes-associated autoantibodies in such children.MethodsIn this double-blind, randomized trial, we assigned 230 infants with HLA-conferred susceptibility to type 1 diabetes and at least one family member with type 1 diabetes to receive either a casein hydrolysate formula or a conventional, cow's-milk-based formula (control) whenever breast milk was not available during the first 6 to 8 months of life. Autoantibodies to insulin, glutamic acid decarboxylase (GAD), the insulinoma-associated 2 molecule (IA-2), and zinc transporter 8 were analyzed with the use of radiobinding assays, and islet-cell antibodies were analyzed with the use of immunofluorescence, during a median observation period of 10 years (mean, 7.5). The children were monitored for incident type 1 diabetes until they were 10 years of age.ResultsThe unadjusted hazard ratio for positivity for one or more autoantibodies in the casein hydrolysate group, as compared with the control group, was 0.54 (95% confidence interval [CI], 0.29 to 0.95), and the hazard ratio adjusted for an observed difference in the duration of exposure to the study formula was 0.51 (95% CI, 0.28 to 0.91). The unadjusted hazard ratio for positivity for two or more autoantibodies was 0.52 (95% CI, 0.21 to 1.17), and the adjusted hazard ratio was 0.47 (95% CI, 0.19 to 1.07). The rate of reported adverse events was similar in the two groups.ConclusionsDietary intervention during infancy appears to have a long-lasting effect on markers of beta-cell autoimmunity--markers that may reflect an autoimmune process leading to type 1 diabetes. (ClinicalTrials.gov number, NCT00570102.).

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