Table 2.
Statistical analysis of frequency-response curves for NE release from MA of intact, paraplegic, and tetraplegic rats
| n | S50 | Emax, nM | Hill Slope | |
|---|---|---|---|---|
| Intact | 5 | 10.2 ± 1.3 | 75.8 ± 21.8 | 0.12 ± 0.01 |
| T2–3 | 6 | 7.0 ± 0.7 | 80.5 ± 20.4 | 0.41 ± 0.17 |
| C6–7 | 5 | 8.4 ± 0.7 | 115.2 ± 22.5 | 0.16 ± 0.01 |
Values are means ± SE. NE, norepinephrine; MA, mesenteric arteries; S50, stimulation frequency (Hz) producing half-maximum release; Emax, maximum NE release (nmol); n = number of rats. There were no significant differences in S50, Emax, or Hill slope between MA from SCI and intact rats (P > 0.05, 1-way ANOVA).