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Tissue Antigens. 1999 Jul;54(1):83-7.

Association of HLA class II alleles with different subgroups of diabetes mellitus in Eastern India identify different associations with IDDM and malnutrition-related diabetes.

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Department of Molecular Medicine, Karolinska Hospital, Stockholm, Sweden.


Genetic studies of Malnutrition related diabetes are few. We have analyzed HLA class II gene polymorphism in different types of diabetes mellitus patients from Cuttack in Eastern India. Patients with insulin-dependent diabetes mellitus (IDDM), non-insulin-dependent diabetes mellitus (NIDDM) and malnutrition-related diabetes mellitus (MRDM), which is subdivided into protein-deficient diabetes mellitus (PDDM) and fibrocalculous pancreatic diabetes (FCPD), were studied and their associations with autoantibody markers. IDDM and PDDM were associated with DR3 and DQ2 but not DR4 and DQ8. FCPD was positively associated with DQ9 (A*0201-B*0303). The association of DQ9 with FCPD suggests differences in the genetic background for susceptibility between IDDM and MRDM in the Cuttack population. There is no association seen between HLA-DR-DQ and NIDDM patients from Eastern India. Clinical classification of diabetes into IDDM, NIDDM and MRDM does not identify the underlying pathological mechanisms. Presence of autoantibodies to IDDM autoantigens in clinical MRDM and NIDDM identifies the slow-onset form of IDDM. Due to the absence of autoantibody assays for diagnosis of IDDM in India, slow onset IDDM is not diagnosed and the patients are classified as NIDDM or MRDM. Our study demonstrates that the presence of GAD65 antibody and DR3-DQ2 positivity in MRDM and NIDDM patients in Eastern India would suggest the presence of slow-onset IDDM. Our data would indicate alternatively that MRDM can coexist with IDDM in these patients and malnutrition could be one of the reasons for the slower onset in IDDM-prone individuals.

[Indexed for MEDLINE]

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