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Increased Serum IGFBP-1 and Reduced Insulin Resistance After Roux-En-Y Gastric Bypass in Chinese Patients with Type 2 Diabetes: a 6-Month Follow-Up

Overview
Journal Obes Surg
Date 2018 Apr 26
PMID 29693217
Citations 5
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Abstract

Objective: This study aimed to measure changes of insulin-like growth factor binding protein-1 (IGFBP-1) in patients with type 2 diabetes mellitus (T2D) following gastric bypass surgery.

Methods: A total of 10 patients with T2D underwent laparoscopic Roux-en-Y gastric bypass (RYGB) surgery. Patient height, weight, waist circumference, and hip circumference were measured pre- and post-operatively at 6 months after surgery. Serum samples were collected at 6 months after surgery to determine fasting blood glucose, glycosylated Hb, fasting insulin, C-peptide, and 2-h postprandial blood glucose, insulin, and C-peptide. Serum was collected at 3 days and 6 months after surgery and IGFBP-1 level determined using ELISA. Serum samples were also collected from 30 healthy weight subjects and 27 overweight control subjects.

Results: Body weight, BMI, and waist circumference were significantly improved following RYGB surgery. Blood glucose, fasting blood glucose, 2-h postprandial blood glucose, and HbA1c were also significantly improved. Fasting C-peptide and 2-h postprandial C-peptide were non-significantly reduced. Serum IGFBP-1 significantly increased at 3 days and 6 months after RYGB surgery. Pre-operative serum IGFBP-1 was not significantly different from healthy weight subjects or overweight subjects.

Conclusion: Increased serum level of IGF-binding proteins after RYGB in 6 months is increased post-surgery compared with overweight and healthy weight controls. IGFBP-1 may serve as part of new supplementary criteria for surgical selection and for defining the success of RYGB.

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