Glucagon-Like Peptide-1 Levels Mirror Insulin Resistant States in Treatment-Naive Type 2 Diabetes Mellitus
DIABETES(2023)
摘要
Introduction: In some Asian populations incretin system has been shown to be preserved in type 2 diabetes mellitus (T2DM). The association between fasting and post-OGTT glucagon-like peptide-1 (GLP-1) levels and insulin resistance in treatment-naïve T2DM population has not been clearly defined. Aim: To assess the insulin resistant states (IRS) by means of insulin resistance index (HOMA-IR) and relate this to the fasting and post-OGTT GLP-1 responses in treatment-naïve T2DM. Methods : Thirty-one treatment-naive T2DM subject underwent a 75-g OGTT. Fasting plasma glucose and insulin levels were obtained for HOMA-IR analyses along with plasma total GLP-1 concentrations measured at 0, 30 and 120 min. Results: Majority of the treatment-naïve T2DM patients were newly-diagnosed (n=28, 96.6%). The GLP-1 levels at 0, 30- and 120-min were 25.59 ± 10.87 pmol/L, 46.86 ± 18.36 pmol/L and 27.02 ± 13.37 pmol/L respectively. Fasting GLP-1, incremental GLP-1 at 30 min (∆GLP-130min) and ∆GLP-1120min were positively correlated with HOMA-IR (r=0.654, p<0.001; r=0.421, p=0.018; r=0.574, p=0.001 respectively). Conclusions: The novel finding of this study is that fasting and post-OGTT GLP-1 levels increased proportionately to IRS. This suggests an adaptive compensatory GLP-1 responses to overcome the worsening insulin resistance in treatment-naïve newly-diagnosed T2DM patients. Disclosure S.Chong: None. N.Sukor: None. S.A.Robert: None. K.Ng: None. N.A.Kamaruddin: Advisory Panel; Zuellig Pharma Holdings Pte. Ltd., Other Relationship; American Association of Clinical Endocrinologists, Speaker's Bureau; AstraZeneca, Boehringer-Ingelheim, Eli Lilly and Company, Merck Sharp & Dohme Corp., Novo Nordisk. Funding National University of Malaysia (GUP-2017-066); Malaysian Endocrine & Metabolic Society (L12-MEMS6)
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关键词
diabetes mellitus,insulin,glucagon-like
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