1. Type 1 diabetes in Jewish Ethiopian immigrants in Israel: HLA class II immunogenetics and contribution of new environment
- Author
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Chaim Brautbar, Naomi Weintrob, Zvi Zadik, M. Elizur, K. Miller, Shoshana Israel, Aaron Hanukoglu, Moshe Phillip, Amnon Zung, T. Bistritzer, and Ilana Koren
- Subjects
musculoskeletal diseases ,Adolescent ,Genotype ,endocrine system diseases ,Judaism ,Genes, MHC Class II ,Immunology ,Population ,Ethnic group ,Environment ,Gene Frequency ,Humans ,Immunology and Allergy ,Medicine ,Age of Onset ,Israel ,Child ,education ,Alleles ,HLA-D Antigens ,Type 1 diabetes ,education.field_of_study ,business.industry ,Incidence (epidemiology) ,Case-control study ,Infant ,HLA-DR Antigens ,General Medicine ,Emigration and Immigration ,medicine.disease ,Diabetes Mellitus, Type 1 ,Haplotypes ,Case-Control Studies ,Child, Preschool ,Jews ,Population study ,Ethiopia ,Age of onset ,business ,HLA-DRB1 Chains ,Demography - Abstract
The interrelationship between human leukocyte antigen immunogenetics and environmental factors and their contribution to the emergence of type 1 diabetes (T1D) were studied in Jewish immigrants from Ethiopia in Israel. This community displays high incidence of T1D, and is unique both by its ethnic segregation and its rapid exposure to a new environment after the immigration. The study population consisted of 152 Ethiopian Jews living in Israel, 33 with T1D and 119 unrelated controls. Human leukocyte antigen class II susceptible and protective alleles in the Jewish Ethiopian patients were similar to those in patients of other ethnic groups in Israel and in non-Jewish Ethiopian patients, with a few exceptions. Three haplotypes were markedly associated with diabetes in Jewish Ethiopian patients: DRB1*0301 DQA1*05 DQB1*02 (OR 4.4, p < 0.001); DRB1*0404 DQA1 03 DQB1*0302 (OR 19.2, p = 0.006), and DRB1*0405 DQA1*03 DQB1*0302 (OR 87.8, p < 0.001). The highly susceptible allele DRB1*0301 was more common in the general Ethiopian population (25.2%) than in all other ethnic groups in Israel, which may render this community prone to the disease. The age at onset of disease in patients with two susceptible haplotypes was negatively correlated with the duration of living in Israel (r = -0.621, p = 0.04). We concluded that ongoing exposure of genetically predisposed immigrants from Ethiopia to diabetogenic environmental factors eventually leads to a high incidence of overt diabetes in this ethnic group.
- Published
- 2004
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