Heterogeneity of non-insulin-dependent diabetes mellitus in HLA types and clinical features: comparison with insulin-dependent diabetes mellitus.
We determined HLA types in 110 Japanese patients with non-insulin-dependent diabetes mellitus (NIDDM) and studied the relationship between the HLA phenotypes and clinical features. Sixty-nine patients with insulin-dependent diabetes mellitus (IDDM) and 100 healthy blood donors served as controls. Concerning HLA DR and DQ loci, frequencies of DR4, DRw9 and DQw3.2 were higher, and those of DR2, DRw8, DRw11, DRw12 and DQw1 were lower in patients with IDDM compared than in healthy controls. There were no differences between NIDDM and normal controls in the frequency of a particular HLA DR antigen except for a decreased frequency in DRw11 in the former. The frequency of DQw3.2 antigen in NIDDM was intermediate between IDDM and normal controls. There were some differences between DQw3.2-positive and -negative NIDDM patients in clinical features. Those who showed low C-peptide responses during oral glucose tolerance test were more frequently found among DQw3.2-positive NIDDM patients. These results suggest that Type 1 diabetes mellitus may have a mild clinical course and is found among the Japanese NIDDM population.
Ida
T
T
Department of Medicine, Kyoto University School of Medicine, Japan.
Kuzuya
H
H
Hattori
M
M
Maruya
E
E
Saji
H
H
Imura
H
H
D000367:Age Factors; D015992:Body Mass Index; D002096:C-Peptide / Q000096:biosynthesis; D003922:Diabetes Mellitus, Type 1 / Q000209:etiology / Q000276:immunology*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications / Q000276:immunology*; D005260:Female; D005787:Gene Frequency; D005951:Glucose Tolerance Test; D006680:HLA Antigens / Q000032:analysis*; D006683:HLA-DQ Antigens / Q000032:analysis; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D016130:Immunophenotyping; D007328:Insulin / Q000627:therapeutic use; D008297:Male
D002096:C-Peptide; D006680:HLA Antigens; D006683:HLA-DQ Antigens; D006684:HLA-DR Antigens; D007328:Insulin