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. 2001 Dec 15;537(Pt 3):659–665. doi: 10.1111/j.1469-7793.2001.00659.x

Table 1.

Effects of PKA modulators on reversal potential (Erev) and stoichiometry (n) of recombinant kNBC1 clones in mPCT cells

WT kNBC1 EGFP-WT-kNBC1 S982A-kNBC1 EGFP-S982A-kNBC1




[Na+]AP/[Na+]BL Erev n Erev n Erev n Erev n
No treatment
10/50 −20.1 ± 2(6) 3.1 ± 0.3 −19.4 ± 2(4) 3.2 ± 0.3 −18.6 ± 2(7) 3.2 ± 0.3 −19.4 ± 2(6) 3.2 ± 0.3
50/10 23.2 ± 2(5) 2.8 ± 0.3 21.5 ± 2(4) 2.9 ± 0.3 19.1 ± 2(8) 3.2 ± 0.3 20.3 ± 2(4) 3.1 ± 0.3
8-Br-cAMP
10/50 −38.2 ± 4(7)* 2.1 ± 0.2* −37.6 ± 4(6)* 2.1 ± 0.2* −22.4 ± 2(6) 2.9 ± 0.3 −21.3 ± 2(4) 3.0 ± 0.3
50/10 37.5 ± 4(8)* 2.1 ± 0.2* 44.2 ± 4(5)* 1.9 ± 0.2* 18.6 ± 2(7) 3.2 ± 0.3 23.1 ± 2(5) 2.8 ± 0.3
H-89 + 8-Br-cAMP
10/50 −23.7 ± 2(8) 2.8 ± 0.3 −22.6 ± 2(4) 2.8 ± 0.3 −18.8 ± 2(7) 3.2 ± 0.3 −20.4 ± 2(6) 3.1 ± 0.3
50/10 22.4 ± 2(5) 2.9 ± 0.3 24.1 ± 2(6) 2.7 ± 0.3 22.9 ± 2(6) 2.8 ± 0.3 23.5 ± 2(4) 2.8 ± 0.3
H-85 + 8-Br-cAMP
10/50 −35.2 ± 3(4)* 2.2 ± 0.2* −36.6 ± 2(4)* 2.1 ± 0.2* −24.1 ± 2(4) 2.7 ± 0.3 −21.6 ± 2(4) 2.9 ± 0.3
50/10 37.4 ± 3(4)* 2.1 ± 0.3* 34.3 ± 2(4)* 2.2 ± 0.2* 23.2 ± 2(4) 2.8 ± 0.3 22.5 ± 2(4) 2.8 ± 0.3

[Na+]AP/[Na+]BL, apical/basolateral sodium gradient. Number of experiments is shown in parentheses.

*

P < 0.05 compared with the corresponding WT kNBC1 construct in untreated cells.