Research Article

Urinary RBP as an Independent Predictor of Renal Outcome in Diabetic Nephropathy

Table 2

Comparisons between diabetic patients with low and high urinary RBP levels.

Low RBP (n =152)High RBP (n =153)p

Male, n (%)126(82.9)106(69.3)0.007
Age, years52.63 ± 10.6351.71 ± 10.290.451
BMI,kg/m224.76 ± 3.3624.38 ± 3.440.336
Follow up, months20.50(13.84, 31.59)24.60(12.88, 37.12)0.579
Diabetic duration, years8.58 ± 6.528.28 ± 5.900.666
Diabetic retinopathy, n/N (%)72/110(65.5)80/121(66.1)1
Systolic BP, mmHg137.05 ± 15.48145.2 ± 16.57<0.001
Diastolic BP mmHg80.24 ± 11.4383.4 ± 11.680.021
Hemoglobulin, mg/dL11.59 ± 2.2311.01 ± 1.920.015
HbA1c, %7.53 ± 1.677.76 ± 2.000.277
Total cholesterol, mmol/L4.59 ± 1.425.02 ± 1.540.011
Triglyceride, mmol/L2.12 ± 1.51.99 ± 1.130.377
HDL-C, mmol/L1.03 ± 0.351.15 ± 0.390.006
LDL-C, mmol/L2.55 ± 1.152.91 ± 1.20.006
VLDL-C, mmol/L0.96 ± 0.690.94 ± 0.550.653
Uric acid, μmol/L397.73 ± 86.28380.47 ± 94.190.119
Serum albumin, g/L35.88 ± 6.5531.82 ± 6.16<0.001
SCr, mg/dL1.53 ± 0.681.48 ± 0.700.415
eGFR, ml/min/1.73m260.24 ± 29.1460.42 ± 25.990.948
UPCR, g/g2.1(0.73, 4.23)3.92(2.69, 5.82)<0.001
Urinary albumin, g/Mol.Cr66.79(37.47, 121.93)353.52(213.65, 604.49)<0.001
Urinary IgG, g/Mol.Cr11.48(4.8, 22.43)55.1(27.88, 91.2)<0.001
Urinary β2-MG, g/Mol.Cr0.19(0.06, 0.60)0.59(0.22, 1.59)<0.001
Urinary NAG, U/Mol.Cr1.31(0.94, 2.33)2.39(1.60, 3.83)<0.001
Treatment
 RAAS inhibitor92(60.5)101(66.0)0.343
 CCB106(69.7)110(71.9)0.707
 Statin54(35.5)60(39.2)0.554
 Insulin94(61.8)113(73.9)0.028

RBP, retinol-binding protein; BP, blood pressure; HbA1c, Hemoglobin A1c; HDL-C, High-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; VLDL-C, very low-density lipoprotein cholesterol; SCr, serum creatinine; eGFR, estimated glomerular filtration rate; UPCR, urinary protein to creatinine ratio; β2-MG, β2-microglobulin; NAG, N-acetyl-β-D-glycosaminidase; RAAS, renin-angiotensin-aldosterone system; CCB, calcium channel blocker.