Figure 5.
Effect of the NEP inhibitor, phosphoramidon (PR: 5 mg/kg/day, s.c.) on plasma SP levels during week 1 of severe MgD. SP levels were determined using an ELISA kit from R&D Systems (Minneapolis, MN).31 The assay is a competitive binding technique in which sample SP competes with a fixed amount of horseradish-labeled SP for sites on a murine monoclonal antibody. Color development is inversely proportional to SP concentration and absorbance is read at 450 nm. Values were normalized to baseline and are means ± SE of 3–6 rats. To obtain total levels for week 1, time-courses were area integrated.