Research Article

Novel Tubular Biomarkers Predict Renal Progression in Type 2 Diabetes Mellitus: A Prospective Cohort Study

Table 1

Baseline characteristics and laboratory data.

ParametersAll patientsGFR decline < 25% per yearGFR decline ≥ 25% per year
()()

Age (year)66.4 ± 11.467 ± 11.364.5 ± 10.3
Male (%)55.453.468.3
Duration of DM (years)12.2 ± 9.212.2 ± 9.312.5 ± 8.9
Time F/U (month)12.3 ± 412.1 ± 4.512.5 ± 5.0
Comorbid disease
 CKD staging
  CKD I38 (12.5%)35 (13.4%)3 (7.3%)
  CKD II71 (23.4%)68 (26.0%)3 (7.3%)
  CKD III102 (33.7%)89 (34.0%)13 (31.7%)
  CKD IV55 (18.2%)43 (16.4%)12 (29.3%)
  CKD V37 (12.2%)27 (10.3%)10 (24.4%)
Hypertension (%)95.695.795
Dyslipidemia (%)91.292.685
Cardiovascular disease (%)19.517.226.8
Anemia (%)53.950.178.0
Medications
 RAAS blocker (%)58.160.642.5
 Insulin (%)27.725.540.0
 ASA (%)6161.860.0
Clinical parameter
 SBP (mmHg)139.8 ± 19.6138.7 ± 18.6147.6 ± 24.1
 DBP (mmHg)76.2 ± 12.375.6 ± 11.879.7 ± 15.5
 BMI (kg/m2)26.89 ± 4.226.71 ± 4.5628.05 ± 5.41
Laboratory parameter
 GFR (mL/min/1.73 m2)49.88 ± 29.7151.98 ± 29.3633.40 ± 25.46
 UACR (mg/g)887.0 ± 210.8742.6 ± 210.31885.4 ± 214
 FPG (mg/dL)143.7 ± 62.3141.6 ± 61.7156.9 ± 69.0
 HbA1c (%)7.3 ± 1.57.2 ± 1.57.5 ± 1.5
 Hemoglobin (g/dL)12.1 ± 2.612.2 ± 2.111.7 ± 3.8
 Phosphate (mg/dL)3.51 ± 0.83.53 ± 0.83.43 ± 0.9
 Intact-PTH (pg/mL)152.9 ± 149127.7 ± 111.2239.4 ± 231.2

versus group with GFR decline < 25% per year.
Note: values for categorical variables are given as number (percentage); values for continuous variables are given as mean ± standard deviation or median [interquartile range].
ASA: aspirin; BMI: body mass index; DBP: diastolic blood pressure; FPG: fasting plasma glucose; GFR: glomerular filtration rate; HbA1c: hemoglobin A1 C; PTH: parathyroid hormone; RAAS: renin angiotensin aldosterone system; SBP: systolic blood pressure; UACR: urine albumin creatinine ratio.