title: HLA-DRw antigens in Mexican-American and Black-American diabetic patients.
abstract: HLA-A, - B, and -C antigens were studied in 67 Mexican-American and 38 black-American diabetic patients who had the onset of their disease before age 31 yr. Control populations consisted of 322 Mexican-American and 367 black-American subjects for HLA-A, -B, and -C antigens. In addition, HLA-DRw antigens were studied in 60 Mexican-American and 34 black-American diabetic patients. Control populations for HLA-DRw antigens consisted of 189 Mexican-American and 145 black-American subjects. We found that juvenile-onset--diabetic patients of Mexican-American origin who had the onset of their disease before age 19 demonstrated a significant increase in HLA-DRw4. HLA-DRw4 was also significantly increased in black-American patients with juvenile-onset diabetes mellitus. HLA-DRw2 was not detected in any patient with juvenile-onset diabetes in either ethnic group. A significant association was found between HLA-B18 and HLA-DRw3 in Mexican-American juvenile-diabetic patients. These findings, which are comparable to those in similar Caucasian patients, provide additional information to support the hypothesis that HLA-DRw antigens play a major role in determining the susceptibility to juvenile-onset diabetes mellitus.
mesh_terms: D000328:Adult; D044383:Black People; D003920:Diabetes Mellitus / Q000276:immunology*; D003922:Diabetes Mellitus, Type 1 / Q000276:immunology*; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D008800:Mexico / Q000208:ethnology; D014481:United States; D001741:Black or African American
chemical_list: D006680:HLA Antigens