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The ratio of glycated albumin to glycated haemoglobin correlates with insulin secretory function.

Authors
 Daham Kim ; Kwang J. Kim ; Hyun C. Lee ; Bong S. Cha ; Eun S. Kang ; Byung-Wan Lee ; Ji H. Huh 
Citation
 Clinical Endocrinology, Vol.77(5) : 679~683, 2012 
Journal Title
 Clinical Endocrinology 
ISSN
 0300-0664 
Issue Date
2012
Abstract
OBJECTIVE: Although glycated haemoglobin (A1c) levels are similar among patients with type 2 diabetes, the glycated albumin (GA)/A1c ratio varies considerably. On the basis of the hypothesis that endogenous insulin secretion might be correlated with the GA/A1c ratio, we investigated whether insulin secretory function or insulin resistance has different effects on the GA/A1c ratio in patients with type 2 diabetes using the standardized liquid meal test. DESIGN: A clinical, retrospective study. PATIENTS AND MEASUREMENTS: A total of 758 patients with type 2 diabetes ingested a standardized liquid meal (i.e. 500 kcal, 17·5 g fat, 68·5 g carbohydrate and 17·5 g protein). The subjects were divided into two groups: those with GA/A1c ratio <2·5 (n = 414) and those with GA/A1c ratio ≥2·5 (n = 344). We compared the A1c and GA levels, and the GA/A1c ratio and evaluated the relationships between the glycaemic indices and other parameters. Effects of β-cell function [homeostasis model assessment (HOMA-β), insulinogenic index (IGI)] and insulin resistance (HOMA-IR) on the GA/A1c ratio were also examined. RESULTS: The GA/A1c ratio was significantly correlated with HOMA-β, IGI and body mass index (BMI) but not with HOMA-IR. Furthermore, after adjusting for age, gender, BMI, haemoglobin and albumin levels, the GA/A1c ratio was still inversely correlated with both HOMA-β and IGI. CONCLUSIONS: The GA/A1c ratio is significantly correlated with insulin secretory function but not with insulin resistance.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/90017
DOI
10.1111/j.1365-2265.2011.04312.x
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
Yonsei Authors
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Link
 http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2265.2011.04312.x/abstract
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