KMID : 1200020190430040495
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Diabetes & Metabolism Journal 2019 Volume.43 No. 4 p.495 ~ p.503
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Factors Related to Blood Intact Incretin Levels in Patients with Type 2 Diabetes Mellitus
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Yoo So-Yeon
Yang Eun-Jin Koh Gwan-Pyo
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Abstract
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Background: We performed this study to identify factors related to intact incretin levels in patients with type 2 diabetes mellitus (T2DM).
Methods: We cross-sectionally analyzed 336 patients with T2DM. Intact glucagon-like peptide 1 (iGLP-1) and intact glucose-dependent insulinotropic polypeptide (iGIP) levels were measured in a fasted state and 30 minutes after ingestion of a standard mixed meal. The differences between 30 and 0 minute iGLP-1 and iGIP levels were indicated as ¥ÄiGLP-1 and ¥ÄiGIP.
Results: In simple correlation analyses, fasting iGLP-1 was positively correlated with glucose, C-peptide, creatinine, and triglyceride levels, and negatively correlated with estimated glomerular filtration rate. ¥ÄiGLP-1 was positively correlated only with ¥ÄC-peptide levels. Fasting iGIP showed positive correlations with glycosylated hemoglobin (HbA1c) and fasting glucose levels, and negative correlations with ¥ÄC-peptide levels. ¥ÄiGIP was negatively correlated with diabetes duration and HbA1c levels, and positively correlated with ¥Äglucose and ¥ÄC-peptide levels. In multivariate analyses adjusting for age, sex, and covariates, fasting iGLP-1 levels were significantly related to fasting glucose levels, ¥ÄiGLP-1 levels were positively related to ¥ÄC-peptide levels, fasting iGIP levels were related to fasting C-peptide levels, and ¥ÄiGIP levels were positively related to ¥ÄC-peptide and ¥Äglucose levels.
Conclusion: Taken together, intact incretin levels are primarily related to C-peptide and glucose levels. This result suggests that glycemia and insulin secretion are the main factors associated with intact incretin levels in T2DM patients.
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KEYWORD
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Diabetes mellitus, type 2, Gastric inhibitory polypeptide, Glucagon-like peptide 1, Intact incretin
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