Research Article

Increased Levels of sRAGE in Diabetic CKD-G5D Patients: A Potential Protective Mechanism against AGE-Related Upregulation of Fibroblast Growth Factor 23 and Inflammation

Table 2

Biochemical characteristics of CKD-G5D patients included in the study.

All CKD-G5D ()Non-DM CKD-G5D ()DM CKD-G5D ()

Creatinine (mg/dL)9.40 ± 3.099.71 ± 3.398.71 ± 2.190.13
Uric acid (mg/dL)5.70 ± 1.295.67 ± 1.245.76 ± 1.410.78
Urea (mg/dL)124.60 ± 31.41122.10 ± 31.60129.90 ± 30.970.32
Total bilirubin (g/dL)0.40 (0–30-0.50)0.40 (0.30–0.50)0.42 ± 0.160.56

pH venous7.35 (7.32–7.38)7.35 (7.32–7.38)7.36 (7.33–7.38)0.47
HCO3 venous (mmol/L)25.18 ± 4.2925.02 ± 4.5425.53 ± 3.760.63
K—potassium (mmol/L)4.46 ± 0.724.46 ± 0.714.48 ± 0.750.91
Na—sodium (mmol/L)140.00 (138.00–142.00)140.00 (138.30–142.80)139.50 ± 3.020.33
Cl—chloride (mmol/L)101.50 (97.00–105.00)101.10 ± 4.28101.20 ± 5.740.95
Ca—calcium (mg/dL)8.95 ± 0.478.98 ± 0.488.88 ± 0.440.38
P—phosphorus (mg/dL)5.15 ± 1.365.14 ± 1.345.20 ± 1.440.86

Total cholesterol (mg/dL)157.10 ± 40.66163.90 ± 35.42142.50 ± 47.760.032
LDL cholesterol (mg/dL)80.82 ± 35.9285.65 ± 32.3270.33 ± 43.170.016
HDL cholesterol (mg/dL)44.00 (38.00–54.00)45.50 (40.00–60.25)42.42 ± 11.810.030
Triglycerides (mg/dL)131.50 (86.25–201.80)117.50 (82.75–204.30)154.00 ± 74.150.55
ALT (UI/L)19.00 (15.00–24.00)20.12 ± 7.7920.00 (15.25–31.25)0.30
AST (UI/L)11.00 (6.00–15.75)11.00 (6.00–14.75)11.42 ± 6.790.93
Glucose (mg/dL)103.50 (92.00–138.50)99.00 (91.00–110.00)165.00 (131.80–220.80)<0.0001
Total protein (g/dL)7.00 ± 0.577.02 ± 0.636.96 ± 0.410.64
Albumin (g/dL)35.03 ± 4.8235.01 ± 4.8134.70 (31.35–39.23)0.75
GA%14.00 (12.03–17.15)13.09 ± 2.0518.30 (17.13–23.20)<0.0001

iPTH (pg/mL)103.50 (53.25–211.00)102.00 (55.00–254.30)134.30 ± 119.900.46
25-(OH)D3 (ng/mL)17.90 (10.93–23.28)17.95 (11.45–25.15)16.32 ± 6.770.30

CRP (mg/L)0.34 (0.29–0.78)0.31 (0.29–0.77)0.41 (0.29–1.04)0.39
β2-microglobulin (ng/mL)22.80 (16.66–28.98)22.96 (16.88–29.61)21.08 ± 7.660.24
BNP (pg/mL)2542.00 (1511.00–10762.00)2265.00 (1108.00–8272.00)3064.00 (1795.00–18558.00)0.148

cFGF-23 (RU/mL)1441.00 (759.00–3614.00)1345.00 (508.10–3087.00)1707.00 (1183.00–4016.00)0.142
sRAGE (pg/mL)3089.30 ± 1339.742838.00 ± 1163.753633.80 ± 1548.450.015
PTX3 (ng/mL)1.57 (0.76–2.94)1.57 (0.75–3.23)1.89 ± 1.480.65
TNFα (pg/mL)10.71 (4.85–21.34)12.15 (5.60–24.19)11.66 ± 10.280.134

Data are expressed as mean ± SD or median (25th–75th percentiles). ALT: alanine transaminase; AST: aspartate transaminase; BNP: brain natriuretic peptide; CRP: C-reactive protein; GA: glycated albumin; cFGF-23: c-terminal portion of fibroblast growth factor-23; iPTH: intact parathyroid hormone; 25-(OH)D3: 25-hydroxy vitamin D; PTX3: pentraxin-related protein PTX3; sRAGE: soluble receptor for advanced glycation end products; TNFα: tumor necrosis factor alpha. Comparison between groups was performed by unpaired t-test or Mann–Whitney U test. values less than 0.05 are indicated in bold.