[Na+] | Substituted Cations | n | HiCoefficient | K[DA] | Vapp |
---|---|---|---|---|---|
mM | μM | pmol/s/mg | |||
155 | 8 | 1.04 ± 0.07 | 2.66 ± 0.18 | 37.2 ± 1.5 | |
55 | Li+ | 7 | 0.96 ± 0.07 | 4.95 ± 0.462-a | 43.4 ± 1.7 |
Choline | 5 | 1.01 ± 0.02 | 6.24 ± 0.602-a | 40.7 ± 1.8 | |
K+ | 7 | 0.92 ± 0.10 | 2.97 ± 0.16 | 13.9 ± 0.72-a |
The DA concentration varied from 1 to 8 μM. The indicated Na+concentration was altered by replacing NaCl with isosmolar quantities of LiCl, choline chloride, or KCl. Shown are means ± SE ofn experiments.
↵2-a Dunnett’s test; p < .01 versus 155 mM Na+.