title: A 3-year follow-up study of β-cell function in patients with early-onset type 2 diabetes.
abstract: Insulin resistance and reduced β-cell glucose sensitivity are present in patients with type 2 diabetes. In the present study, we investigated the changes in β-cell function in patients with type 2 diabetes during a 3-year follow-up study. A total of 48 patients with early-onset type 2 diabetes (EOD) and 55 patients with late-onset type 2 diabetes (LOD) were enrolled. Weight, height, waist circumference, hip circumference, blood pressure and plasma levels of lipids, glucose, fasting serum C-peptide (CPR0) and serum C-peptide 6 min after glucagon stimulation (CPR6) were measured. In addition, islet β-cell secretory activity was detected. Subjects with EOD had lower Systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index (BMI), fasting CPR0, CPR6 and greater glycated hemoglobin A1c (HbA1c), triglyceride (TG) compared with subjects with LOD. CPR0, CPR6 and TG were decreased in both EOD and LOD groups 3 years later. The ratio of β-cell function failure was 29.17 and 10.91% in the EOD and LOD groups, respectively, and there was significant difference between the two groups. A positive correlation was identified between the CPR0 and waist-hip ratio, HbA1c in the EOD group. A similar positive correlation was observed between CPR0 and BMI in the LOD group. Collectively, islet β-cell function has declined in patients with EOD, and this change may be more evident when compared with those with LOD.
authors.affiliation: Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China; Department of Endocrinology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai, Shandong 264000, P.R. China.
authors.forename: Shaoling
authors.initials: S
authors.lastname: Zhou
authors.affiliation: Department of Endocrinology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai, Shandong 264000, P.R. China.
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Meng
authors.affiliation: Department of Endocrinology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai, Shandong 264000, P.R. China.
authors.forename: Shuyan
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Endocrinology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai, Shandong 264000, P.R. China.
authors.forename: Ruizhen
authors.initials: R
authors.lastname: Ren
authors.affiliation: Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.
authors.forename: Weikai
authors.initials: W
authors.lastname: Hou
authors.affiliation: Department of Endocrinology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China.
authors.forename: Kuixiang
authors.initials: K
authors.lastname: Huang
authors.affiliation: Department of Endocrinology, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China.
authors.forename: Hongli
authors.initials: H
authors.lastname: Shi
keywords: C-peptide response to glucagon test; early-onset type 2 diabetes; islet β-cell function; late-onset type 2 diabetes