Research Article

Relationship between Serum Indoxyl Sulfate and Klotho Protein and Vascular Calcification in Patients with Chronic Kidney Disease Stages 3–5

Table 2

Comparison of age, IS, and Klotho protein among groups.

GroupHealthy control (20 cases)CKD stages 3-4 (36 cases)CKD stage 5 nondialysis (38 cases)CKD stage 5 dialysis (34 cases)F/HP value

Age (years)49.50 ± 12.3157.03 ± 13.0855.45 ± 14.6954.35 ± 12.801.4120.242
IS (pg/mL)60.72 (53.94, 64.74)abc120.06 (90.53, 222.45)ab345.60 (269.10, 438.05)a731.49 (562.47, 803.55)98.490.000
Klotho (ng/mL)1.30 (1.04, 1.37)abc0.91 (0.58, 1.20)ab0.59 (0.45, 0.82)a0.42 (0.36, 0.52)70.480.000

aCompared with CKD stage 5 dialysis group ; bcompared with CKD stage 5 nondialysis group ; ccompared with CKD stages 3-4 dialysis group . IS, indoxyl sulfate; CKD, chronic kidney disease.