Table 3.
Biophysical properties of TTX-R and TTX-S Na+ currents in neurons from V1Gi-DREAD mice (n = 15) and littermate controls (n = 10)
| Inactivation |
Activation |
|||
|---|---|---|---|---|
| V1/2 (mV) | Slope | V1/2 (mV) | Slope | |
| TTX-R | ||||
| Control | −26.8 ± 1.4 | 3.8 ± 0.2 | −9.2 ± 1.0 | 5.3 ± 0.2 |
| V1Gi-DREADD | −24.9 ± 0.9 | 3.9 ± 0.2 | −8.8 ± 1.2 | 5.6 ± 0.2 |
| TTX-S | ||||
| Control | −72.1 ± 2.6 | 5.2 ± 0.3 | −22.2 ± 0.3 | 5.2 ± 0.6 |
| V1Gi-DREADD | −55.8 ± 1.7** | 5.9 ± 0.3 | −19.6 ± 1.0* | 5.9 ± 0.3 |
Conductance–voltage data were fitted with a Boltzmann equation to estimate the potential at which half-maximal conductance was activated (V1/2) and sloped. Student's t test was used to assess differences in current properties.
* Indicates a significant difference between V1Gi-DREADD and littermate controls where *p < 0.05,
**p < 0.01.