ABSTRACT
Our study investigated uric acid transport across isolated parietal peritoneum taken from the anterior abdominal wall of white New Zealand rabbits and placed inside a modified Ussing-type chamber. Values for transfer from the mesothelial to the interstitial side of membrane (M --> I) were calculated using the mathematical model of mass transport and are expressed as a coefficient of diffusive permeability [P (in centimeters per second)]. Four separate series of experiments were done. In the first series, we examined uric acid transfer in control conditions (for 120 minutes). In the second and third series, P was calculated before (15 - 60 minutes) and after introduction of p-cresol (0.005 g/dL) or sodium hyaluronan (0.04 g/dL) on the M side of the membrane. In the fourth series, transfer parameters were measured before (15 - 75 minutes) and after (90 - 150 minutes) application of sodium deoxycholate (0.104 g/dL). The dynamics of transperitoneal transport of uric acid were stable. The values of P +/- standard error of the mean (x0.0001) were 1.936 +/- 0.324 cm/s and 2.078 +/- 0.186 cm/s. Application of p-cresol on the M side of membrane lowered uric acid transport by 10%. Application of sodium hyaluronan produced no change, but application of sodium deoxycholate increased the transfer of uric acid by 155%. These observations may have clinical importance.
