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Original Article Frequency of Anti-GAD Antibody in Non-obese, Adult-onset Type 2 Diabetes in Korea and Clinical and Biological Characteristics According to Anti-GAD Antibody.
Chul Sik Kim, Jina Park, Min Ho Cho, Jong Suk Park, Joo Young Nam, Dol Mi Kim, Chul Woo Ahn, Bong Soo Cha, Sung Kil Lim, Kyung Rae Kim, Hyun Chul Lee
Diabetes & Metabolism Journal 2004;28(2):66-74
DOI: https://doi.org/
Published online: April 1, 2004
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Department of Endocrinology and Metabolism, Yonsei University College of Medicine, Seoul, Korea.

BACKGROUND
Some of the characteristic features of diabetes mellitus in Korea are that 70-80% of patients are non-obese or adult-onset type, and type 1 diabetes is very rare. Occasionally, autoantibodies to glutamic acid decarboxylase(GAD) are found in typical, type 2 diabetes mellitus patients(T2DM). The role of the autoantibody to GAD in T2DM is unknown. The aim of this study was to determine the clinical and biochemical characteristics between GAD-positive and GAD-negative non-obese, adult-onset diabetics in Korea. METHODS: A cohort of 428 type 2 diabetes patients was included. The measured autoantibodies to GAD were measured, and the C-peptide and HbA1c levels, anthropometric data(weight, height, body mass index and waist circumference), blood pressure and lipid profiles compared between the two groups. RESULTS: Compared to the antibody-negative group(n=374; 87.4%), patients with the anti-GAD antibody(n=54; 12.6%) had significantly lower C-peptide levels and were significantly younger. The anti GAD-positive group had a lower BMI, more frequently needed insulin supplements, and a lower prevalence of hypertension. There were no significant differences in gender and family history of diabetes between the two groups. CONCLUSION: The presence of the autoantibody to GAD allowed the group with more deteriorated beta-cell function and more frequent need for insulin supplements, but a lower prevalence of obesity and hypertension to be determined.

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    Frequency of Anti-GAD Antibody in Non-obese, Adult-onset Type 2 Diabetes in Korea and Clinical and Biological Characteristics According to Anti-GAD Antibody.
    Korean Diabetes J. 2004;28(2):66-74.   Published online April 1, 2004
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