Abstract
Aim
We investigated the association of visceral adiposity with glycated albumin (GA) as well as GA/hemoglobin A1c (HbA1c) in type 2 diabetes.
Methods
One hundred twenty-three patients (68 males, 55 females) with type 2 diabetes were enrolled in this cross-sectional study. Visceral fat area (VFA) was determined using an abdominal dual bioelectrical impedance analysis (dual BIA) instrument. The relationship of VFA with GA and GA/HbA1c was analyzed.
Results
Simple regression analysis showed that BMI was inversely correlated with GA as well as GA/HbA1c, but not with HbA1c, while VFA had a significant correlation with GA and GA/HbA1c. Furthermore, multiple regression analysis revealed VFA as an independent contributor to GA/HbA1c. These results suggest that visceral adiposity is a primary factor associated with GA and HbA1c level discrepancy in patients with type 2 diabetes.
Conclusions
GA is a useful indicator for glycemic control, while visceral obesity should also be taken into consideration in type 2 diabetes cases.
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Acknowledgements
We thank the patients for their participation in this study. Additionally, we are grateful for the staff of Osaka City University Hospital for their help with recruiting the patients, and collecting and recording clinical information.
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SM performed all of the processes involved in this study. KM managed all of the processes involved in this study, and wrote and edited the drafts of the manuscript. MI, ME, and KM conceived the study, and participated in its design and coordination. TH, YK, YY, TM, KM, SF, AS, TS, and ME recruited the patients. All co-authors contributed to discussions related to and were involved in drafting or critically revising the manuscript. Each author has read the final version of the manuscript and approved its submission for publishing.
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The authors have no conflicts of interest to declare.
Ethical approval
All procedures employed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national), and with the Helsinki Declaration of 1964 and later versions.
Informed consent
Written informed consent was obtained from all subjects. The ethical review board of Osaka City University Graduate School of Medicine approved the study protocol (Approval date: not applicable. no. 308).
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13340_2020_431_MOESM1_ESM.pptx
Correlation between VFA and, GA (a)(b) or GA/HbAb1c (c)(d) separately in males and females. Correlation of VFA with (a) GA in male, (b) GA in female, (c) GA/HbA1c in male, and (d) GA/HbA1c in female (PPTX 72 kb)
13340_2020_431_MOESM2_ESM.pptx
Comparison analysis between actual measured HbA1c and that calculated with a formula using GA. Non-obese (a) BMI <25 kg/m2, (c) VFA <100 cm2, and obese (b) BMI ≥25 kg/m2, (d) VFA ≥100 cm2, patients. Data are presented as mean with SD (PPTX 60 kb)
13340_2020_431_MOESM3_ESM.pptx
Cumulative response curve of VFA. A cut-off value for prediction of a -2SD of calculated HbA1c to measured HbA1c was shown to be 121 cm2 (PPTX 64 kb)
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Maruo, S., Motoyama, K., Hirota, T. et al. Visceral adiposity is associated with the discrepancy between glycated albumin and HbA1c in type 2 diabetes. Diabetol Int 11, 368–375 (2020). https://doi.org/10.1007/s13340-020-00431-z
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DOI: https://doi.org/10.1007/s13340-020-00431-z