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KMID : 1200020160400040308
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Diabetes & Metabolism Journal
2016 Volume.40 No. 4 p.308 ~ p.317
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Application of the Oral Minimal Model to Korean Subjects with Normal Glucose Tolerance and Type 2 Diabetes Mellitus
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Lim Min-Hyuk
Oh Tae-Jung
Choi Ka-ram
Lee Jung-Chan
Cho Young-Min
Kim Sung-Wan
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Abstract
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Background: The oral minimal model is a simple, useful tool for the assessment of β-cell function and insulin sensitivity across the spectrum of glucose tolerance, including normal glucose tolerance (NGT), prediabetes, and type 2 diabetes mellitus (T2DM) in humans.
Methods: Plasma glucose, insulin, and C-peptide levels were measured during a 180-minute, 75-g oral glucose tolerance test in 24 Korean subjects with NGT (n=10) and T2DM (n=14). The parameters in the computational model were estimated, and the indexes for insulin sensitivity and β-cell function were compared between the NGT and T2DM groups.
Results: The insulin sensitivity index was lower in the T2DM group than the NGT group. The basal index of β-cell responsivity, basal hepatic insulin extraction ratio, and post-glucose challenge hepatic insulin extraction ratio were not different between the NGT and T2DM groups. The dynamic, static, and total β-cell responsivity indexes were significantly lower in the T2DM group than the NGT group. The dynamic, static, and total disposition indexes were also significantly lower in the T2DM group than the NGT group.
Conclusion: The oral minimal model can be reproducibly applied to evaluate β-cell function and insulin sensitivity in Koreans.
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KEYWORD
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Computational method, Disposition index, Glucose tolerance test, Insulin resistance, Oral minimal model, Responsivity index
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