TABLE 1.
Binding constants for albumin: RAGE interaction
Kd (µg/ml) |
Bmax (ng/well) |
IC50 (µg/ml) |
|
---|---|---|---|
Alb | n.d. | n.d. | n.d. |
HOCl-Alb (25:1) | 15.7 ± 1.2 | 10.5 ± 0.9 | n.d. |
HOCl-Alb (50:1) | 14.6 ± 0.3 | 20.3 ± 1.6 | 29.0 ± 5.1 |
HOCl-Alb (100:1) | 10.6 ± 0.6 | 42.8 ± 5.2 | 14.4 ± 3.5 |
MPO-Alb | 16.1 ± 1.1 | 24.6 ± 1.7 | 20.1 ± 3.8 |
AGE-Alb | 46.9 ± 4.6 | 52.6 ± 4.2 | 51.9 ± 15.2 |
Kd and Bmax values for 125I-soluble receptor for advanced glycation end products (RAGE) binding to microtiter wells coated with the indicated albumin preparations are listed. IC50 values for 125I-sRAGE binding inhibition to AGE-albumin (AGE-Alb)-coated microtiter wells by albumin (Alb), HOCl-Alb (at indicated oxidant:protein molar ratio), MPO-Alb (calculated HOCl:protein molar ratio of 50:1), and AGE-Alb are given. Calculations were performed by nonlinear regression analysis (GraphPad Prism). n.d. = non determined.