Observational Study
Copyright ©The Author(s) 2024.
World J Nephrol. Dec 25, 2024; 13(4): 98880
Published online Dec 25, 2024. doi: 10.5527/wjn.v13.i4.98880
Table 1 Characteristics of the study population, n (%)
Parameter
Control (n = 40)
Normoalbuminuria (n = 40)
Microalbuminuria (n = 40)
Macroalbuminuria (n = 40)
P value
Mean age in years (SD)52.83 (7.65)49.63 (8.76)51.05 (6.54)53.73 (10.71)0.144
Male25 (62.5)23 (57.5)28 (70)26 (65)0.704
Smoking habit4 (10)4 (10)4 (10)5 (12.5)0.978
Alcohol consumption7 (17.5)8 (20)9 (22.5)7 (17.5)0.932
Mean duration of diabetes mellitus in years (SD)-2.23 (2.41)4,55.98 (7.08)68.55 (6.76)< 0.001
Mean body mass index (SD) (kg/m2)24.43 (3.4)24.8 (3.7)24 (4.29)23.8 (3.58)0.656
Mean systolic blood pressure (SD)118.8 (10.83)1,2,3124.88 (8.7)5128.78 (10.11)132.08 (13.8)< 0.001
Mean diastolic blood pressure (SD)78.75 (7.21)2,381.3 (6.91)84.63 (7.52)85.18 (10.06)0.001
Table 2 Blood parameters and urine biomarkers of the study population
Parameter
Control (n = 40)
Normoalbuminuria (n = 40)
Microalbuminuria (n = 40)
Macroalbuminuria (n = 40)
P value
Urea24.75 ± 6.7824.23 ± 6.5622.58 ± 10.19628.63 ± 13.520.042
Creatinine0.75 ± 0.431,2,30.85 ± 0.360.83 ± 0.451.18 ± 0.5< 0.001
Fasting blood sugar92.75 ± 8.321,2,3173.88 ± 83.01199.7 ± 56.15202.78 ± 102.01< 0.001
Postprandial blood sugar138.55 ± 15.021,2,3268.85 ± 117.934,5337.48 ± 97.98326.9 ± 118.48< 0.001
Glycated hemoglobin5.03 ± 0.151,2,38.53 ± 2.079.5 ± 1.669.35 ± 2.52< 0.001
Estimated glomerular filtration rate117.08 ± 30.01111.18 ± 27.35110.88 ± 39.9677 ± 27.48< 0.001
Urine albumin creatinine ratio5.35 ± 6.491,2,311.13 ± 6.634,5150.58 ± 81.461612.55 ± 2064.23< 0.001
Neutrophil gelatinase-associated lipocalin (µg/L)3.75 ± 2.431,2,35.28 ± 2.594,56.85 ± 2.8169.15 ± 2.02< 0.001
Kidney injury molecule-1 (ng/mL)0.7 ± 0.641,2,31.33 ± 0.574,51.85 ± 1.1662.45 ± 0.9< 0.001
Periostin (ng/mL)29.25 ± 13.151,2,341.8 ± 24.174,553.65 ± 14.57664.6 ± 9.1< 0.001
Table 3 Correlation of urinary neutrophil gelatinase-associated lipocalin, kidney injury molecule-1and periostin with other parameters
Parameter
ACR
Neutrophil gelatinase-associated lipocalin
Kidney injury molecule-1
Periostin
Duration of diabetes mellitusR = 0.457, P ≤ 0.001b---
CreatinineR = 0.194, P = 0.014aR = 0.218, P = 0.006bR = 0.270, P = 0.001bR = 0.226, P = 0.004b
Fasting blood sugarR = 0.182, P = 0.021aR = 0.352, P ≤ 0.001bR = 0.192, P = 0.015aR = 0.376, P ≤ 0.001b
Postprandial blood sugarR = 0.248, P = 0.002bR = 0.383, P ≤ 0.001bR = 0.231, P = 0.003bR = 0.449, P ≤ 0.001b
Glycated hemoglobinR = 0.225, P = 0.004bR = 0.425, P ≤ 0.001bR = 0.295, P ≤ 0.001bR = 0.406, P ≤ 0.001b
ACR-R = 0.339, P ≤ 0.001bR = 0.219, P = 0.005bR = 0.302, P ≤ 0.001b
Estimated glomerular filtration rateR = -0.292, P ≤ 0.001bR = -0.325, P ≤ 0.001bR = -0.299, P ≤ 0.001bR = -0.275, P ≤ 0.001b
Table 4 Urine biomarkers as per estimated glomerular filtration rate category in patients with diabetes mellitus (n = 120)
Parameter
Stage 1 (n = 76)
Stage 2 (n = 30)
Stage 3 (n = 11)
Stage 4 (n = 3)
P value
Albumin creatinine ratio240.17 ± 633.921,2,31078.1 ± 2231.041344.09 ± 1420.741860 ± 1893.20.002
Neutrophil gelatinase-associated lipocalin (µg/L)6.36 ± 2.791,2,38.27 ± 3.158.27 ± 1.799.67 ± 2.30.003
Kidney injury molecule-1 (ng/mL)1.67 ± 1.0232.1 ± 0.842.45 ± 1.122.67 ± 0.570.017
Periostin (ng/mL)51.04 ± 20.012,352.63 ± 19.1166.82 ± 9.9869.67 ± 4.50.034
Table 5 The performance criteria of the urine markers in prediction of diabetic nephropathy among the study population
Parameter
Area under curve (95%CI)
Sensitivity
Specificity
Cut of value
P value
Albumin creatinine ratio0.924 (0.882-0.963)809012.5< 0.001
Neutrophil gelatinase-associated lipocalin0.795 (0.725-0.866)75.8554.5< 0.001
Kidney injury molecule-10.825 (0.757-0.893)63.3901.5< 0.001
Periostin0.833 (0.773-0.894)8067.537.5< 0.001