Table 2.
Basal 86Rb fluxes and associated electrical parameters in presence of mucosal VO4 in aldosterone rat distal colon
|
86Rb Fluxes, μeq·h−1·cm−2 |
|||||
|---|---|---|---|---|---|
| m-s | s-m | Net | Isc, μeq·h−1·cm−2 | G, mS | |
| P-I | 0.26 ± 0.04 | 2.57 ± 0.10 | −2.31 ± 0.09 | 7.5 ± 0.6 | 17.8 ± 1.3 |
| P-II | 0.27 ± 0.06 (NS) | 2.58 ± 0.12 (NS) | −2.31 ± 0.07 (NS) | 7.7 ± 0.5 (NS) | 17.7 ± 1.6 (NS) |
| P-III | 0.26 ± 0.03 (NS) | 2.39 ± 0.26 (NS) | −2.13 ± 0.25 (NS) | 7.7 ± 0.6 (NS) | 20.0 ± 1.8 (NS) |
Values are means ± SE. Mucosal to serosal (m-s), serosal to mucosal (s-m), and net 86Rb fluxes were measured for 3 consecutive 15-min flux periods (P-I, P-II, and P-III) in the presence of 1 mM mucosal VO4, as described in materials and methods. Net 86Rb absorption and secretion are represented by positive and negative values, respectively. NS, not significant compared with respective P-I.