Journal
THERAPEUTIC APHERESIS AND DIALYSIS
Volume 12, Issue 1, Pages 28-32Publisher
WILEY
DOI: 10.1111/j.1744-9987.2007.00537.x
Keywords
advanced glycation end products; atherosclerosis; peritoneal dialysis; peritoneal transport; S100A12
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S100A12 is a ligand for the receptor for advanced glycation end products. It has been shown that S100A12 induces expression of adhesion molecules, and mediates activation and migration of monocytes/macrophages. Circulating S100A12 may be involved in chronic inflammation. We previously reported increased S100A12 levels in patients with non-insulin-dependent diabetes mellitus and hemodialysis. A high peritoneal solute transport rate may be associated with encapsulating peritoneal sclerosis and mortality. We measured plasma S100A12 levels in peritoneal dialysis patients and evaluated a possible relation between the increased plasma S100A12 levels in peritoneal dialysis patients and the high peritonea] solute transport rate. Subjects included 36 patients (mean age +/- SE, 46.0 +/- 12.0 years) with no apparent infection and no malignancy who had been undergoing peritoneal dialysis for 36.5 +/- 3.9 months. We developed an enzyme-linked immunosorbent assay system to measure plasma S100A12 levels. A peritoneal equilibrium test was performed and subjects were categorized as high and high-average (H) (n = 14) or low and low-average (L) (n = 22) transporters. Plasma S100A12 concentrations were significantly higher in peritonea] dialysis patients (21.6 +/- 3.0 ng/mL) than in control subjects (n = 42; 10.8 +/- 1.0 ng/mL). Plasma S100A12 concentrations were also higher in the H group (28.2 +/- 6.1 ng/mL) than in the L group (14.2 +/- 2.0 ng/mL). These results suggest that S100A12 may be a sensitive marker of subclinical inflammation and that an increased S100A12 level may be related to the high peritoneal solute transport rate.
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