Saliva 1,5-anhydroglucitol is associated with early-phase insulin secretion in Chinese patients with type 2 diabetes,BMJ Open Diabetes Research & Care

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Saliva 1,5-anhydroglucitol is associated with early-phase insulin secretion in Chinese patients with type 2 diabetes
BMJ Open Diabetes Research & Care ( IF 4.1 ) Pub Date : 2021-06-01 , DOI: 10.1136/bmjdrc-2021-002199
Lingwen Ying ₁ , Chaohui Jian ₁ , Xiaojing Ma ₂ , Kun Ge ₃ , Wei Zhu ₁ , Yufei Wang ₁ , Aihua Zhao ₃ , Jian Zhou ₁ , Wei Jia _{3,

4} , Yuqian Bao ₂

Affiliation

Introduction Saliva collection is a non-invasive test and is convenient. 1,5-anhydroglucitol (1,5-AG) is a new indicator reflecting short-term blood glucose levels. This study aimed to explore the relationship between saliva 1,5-AG and insulin secretion function and insulin sensitivity. Research design and methods Adult patients with type 2 diabetes who were hospitalized were enrolled. Based on blood glucose and C-peptide, homeostasis model assessment 2 for β cell secretion function, C-peptidogenic index (CGI), △2-hour C-peptide (2hCP)/△2-hour postprandial glucose (2hPG), ratio of 0–30 min area under the curve for C-peptide and area under the curve for glucose (AUCCP30/AUCPG30), and AUC2hCP/AUC2hPG were calculated to evaluate insulin secretion function, while indicators such as homeostasis model assessment 2 for insulin resistance were used to assess insulin sensitivity. Results We included 284 subjects (178 men and 106 women) with type 2 diabetes aged 20–70 years. The saliva 1,5-AG level was 0.133 (0.089–0.204) µg/mL. Spearman’s correlation analysis revealed a significantly negative correlation between saliva 1,5-AG and 0, 30, and 120 min blood glucose, glycated hemoglobin A1c, and glycated albumin (all p<0.05), and a significantly positive association between saliva 1,5-AG and CGI ( r =0.171, p=0.004) and AUC CP30 /AUC PG30 ( r =0.174, p=0.003). The above correlations still existed after adjusting for age, sex, body mass index, and diabetes duration. In multiple linear regression, saliva 1,5-AG was an independent factor of CGI (standardized β =0.135, p=0.015) and AUC CP30 /AUC PG30 (standardized β =0.110, p=0.020). Conclusions Saliva 1,5-AG was related to CGI and AUCCP30/AUCPG30 in patients with type 2 diabetes. Trial registration number ChiCTR-SOC-17011356. Data are available on reasonable request. The datasets generated during and/or analyzed during the current study are not publicly available but are available from the corresponding author on reasonable request.

更新日期：2021-06-24

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