This project, Called Diabetes Autoimmunity Study in the Young (DAISY) began in July 1993 and allowed us to establish two unique cohorts of very young children who are at up to 20-fold increased risk of type I diabetes: I) a cohort of 693 siblings and offspring (current median age 4.5 years) of persons with type 1 diabetes and 1007 of their relatives; and 2) a cohort of 1,069 newborns (current median age 3.1 years) with type I diabetes-associated HLA-DR,DQ alleles, identified through a cord blood screening of 21,713 general population children without a diabetic relative and 1,491 of their relatives. To date, a short prospective follow-up of these cohorts has already provided new important information concerning the natural history of b-cell autoimmunity and diabetes in early childhood. Based on our findings, we are proposing to follow these cohorts through the period of the highest risk of b-cell autoimmunity and to address the following goals:
Specific Aims 1. To continue enrollment and follow-up, until the median age of 10 yrs, of the existing cohorts of siblings/offspring and of newborns at high and moderate genetic risk detected through general population HLA-DR,DQ screening to: a) further define the incidence of b-cell autoimmunity by age, race/ethnicity, HLA-genotype, and family history of type 1 diabetes; b) formally evaluate candidate autoimmunity/diabetes risk factors available for all participants, e.g., early childhood diet, reported infections, and vaccination; and c) sustain this population laboratory for additional studies of type 1 diabetes and other autoimmune diseases. 2. To continue current and initiate new case-control studies, nested in the cohorts, of selected environmental and genetic risk factors for: a) b-cell autoimmunity and its persistence; and b) progression from b-cell autoimmunity to diabetes. 3. Based on our findings, initiate intensive follow-up from birth of eighty highest risk children (HLA-DR3/4,DQB1 *0302 relatives) with monthly filter paper blood samples and weekly stool samples in addition to tri-monthly clinic visits. 4. To explore gene-environment interactions using combined approaches of case-control and case parent analyses. Our study is filling important gaps in the understanding of the events leading to type I diabetes in early childhood by providing the first unbiased population estimates of the incidence of b-cell autoimmunity and of the relative risks associated with candidate environmental and genetic factors.
| Steck, Andrea K; Dong, Fran; Frohnert, Brigitte I et al. (2018) Predicting progression to diabetes in islet autoantibody positive children. J Autoimmun 90:59-63 |
| Liu, Chih-Wei; Bramer, Lisa; Webb-Robertson, Bobbie-Jo et al. (2018) Temporal expression profiling of plasma proteins reveals oxidative stress in early stages of Type 1 Diabetes progression. J Proteomics 172:100-110 |
| Frohnert, Brigitte I; Laimighofer, Michael; Krumsiek, Jan et al. (2018) Prediction of type 1 diabetes using a genetic risk model in the Diabetes Autoimmunity Study in the Young. Pediatr Diabetes 19:277-283 |
| Gu, Yong; Zhao, Zhiyuan; High, Hilary et al. (2017) Islet Autoantibody Detection by Electrochemiluminescence (ECL) Assay. J Clin Cell Immunol 8: |
| Liu, Chih-Wei; Bramer, Lisa; Webb-Robertson, Bobbie-Jo et al. (2017) Temporal profiles of plasma proteome during childhood development. J Proteomics 152:321-328 |
| Zhao, Zhiyuan; Miao, Dongmei; Michels, Aaron et al. (2016) A multiplex assay combining insulin, GAD, IA-2 and transglutaminase autoantibodies to facilitate screening for pre-type 1 diabetes and celiac disease. J Immunol Methods 430:28-32 |
| Rewers, Marian; Ludvigsson, Johnny (2016) Environmental risk factors for type 1 diabetes. Lancet 387:2340-2348 |
| Frohnert, Brigitte I; Rewers, Marian J (2016) Metabolomics in childhood diabetes. Pediatr Diabetes 17:3-14 |
| Gesualdo, Patricia D; Bautista, Kimberly A; Waugh, Kathleen C et al. (2016) Feasibility of screening for T1D and celiac disease in a pediatric clinic setting. Pediatr Diabetes 17:441-8 |
| Steck, Andrea K; Dong, Fran; Waugh, Kathleen et al. (2016) Predictors of slow progression to diabetes in children with multiple islet autoantibodies. J Autoimmun 72:113-7 |
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