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Title: Association between retinol-binding protein and renal function among asian subjects with type 2 diabetes mellitus: A cross-sectional study
Authors: Kittisak Thawnashom
Rungsunn Tungtrongchitr
Siriporn Chanchay
Anchalee Tungtrongchitr
Jens Raila
Andrea Henze
Florian J. Schweigert
Rangsit University
Mahidol University
Burapha University
Universitat Potsdam
Keywords: Medicine
Issue Date: 1-Jul-2011
Citation: Southeast Asian Journal of Tropical Medicine and Public Health. Vol.42, No.4 (2011), 936-945
Abstract: Retinol-binding protein 4 (RBP4) has been suggested as new adipokine, possibly linking obesity to type 2 diabetes mellitus (T2DM). Since the kidneys are the main site of RBP4 degradation and since renal failure is a frequent co-morbid condition with diabetes mellitus, we evaluated the association among RBP4, renal function and T2DM in an Asian population. RBP4 serum levels were analyzed in 110 subjects (50 with T2DM) using an enzyme-linked immunosorbent assay (ELISA). Based on a cut-off estimated glomerular filtration rate (eGFR) of 60 ml/min per 1.73 m2 (calculated according the abbreviated MDRD formula which uses serum creatinine level, age and gender) and on the T2DM status, subjects were assigned to four subgroups: Group A - controls with an eGFR > 60 ml/min per 1.73 m2, Group B - controls with an eGFR < 60 ml/min per 1.73 m2, Group C-T2DM subjects with an eGFR > 60 ml/min per 1.73 m2, and Group D - T2DM subjects with an eGFR < 60 ml/ min per 1.73 m2. In both the T2DM and control groups, RBP4 levels were higher in subjects with an eGFR < 60 ml/min per 1.73 m2 than in subjects with an eGFR > 60 ml/min per 1.73 m2. However, the difference was only significant between the control groups (p < 0.05). After adjusting for age, gender, BMI, eGFR and the presence of T2DM, eGFR, not T2DM, was associated with plasma RBP4 levels (p < 0.05). These results suggest among Asians the eGFR, but not the presence of T2DM, is a major determinant of RBP4 serum levels. The eGFR should be taken into account when evaluating the role of RBP4 in the pathogenesis of insulin resistance and T2DM.
ISSN: 01251562
Appears in Collections:Scopus 2011-2015

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