Table 1.
Body temperature (Tb), blood gas values and integrated phrenic nerve burst amplitude (during acute hypoxia) for i.t treated rats.
| Group | Tb | PaO2 | PaCO2 | pH | MAP | Integrated Phrenic amplitude (%) | |
|---|---|---|---|---|---|---|---|
| Baseline | AIH + vehicle | 37.5 ± 0.2 | 301.8 ± 9.9 | 46.6 ± 0.5 | 7.337 ± 0.015 | 109.0 ± 3.3 | 0 |
| AIH + L-NAME | 37.8 ± 0.2 | 288.5 ± 6.4 | 47.2 ± 1.2 | 7.326 ± 0.007 | 111.8 ± 4.8 | 0 | |
| AIH + nNOS-1 | 37.6 ± 0.1 | 286.0 ± 7.2 | 47.2 ± 0.7 | 7.344 ± 0.009 | 105.1 ± 2.6 | 0 | |
| AIH + 1400W | 37.5 ± 0.2 | 310.6 ± 13.0 | 47.3 ± 0.5 | 7.355 ± 0.001 | 104.6 ± 6.3 | 0 | |
| Hypoxia | AIH + vehicle | 37.4 ± 0.2 | 36.7 ± 1.5* | 46.4 ± 0.7 | 7.330 ± 0.013* | 84.5 ± 6.1* | 110.8 ± 16.0* |
| AIH + L-NAME | 37.7 ± 0.2 | 42.0 ± 1.5* | 47.6 ± 1.2 | 7.304 ± 0.010* | 72.9 ± 12.8* | 62.8 ± 8.4*# | |
| AIH + nNOS-1 | 37.5 ± 0.1 | 36.9 ± 1.5* | 48.0 ± 0.6 | 7.322 ± 0.009* | 75.2 ± 6.5* | 80.6 ± 10.7*# | |
| AIH + 1400W | 37.4 ± 0.2 | 38.7 ± 0.9* | 47.3 ± 0.9 | 7.324 ± 0.007* | 79.6 ± 14.8* | 106.6 ± 27.5* | |
| 60 mins | AIH + vehicle | 37.4 ± 0.2 | 280.2 ± 7.0 | 47.0 ± 0.7 | 7.336 ± 0.013 | 90.6 ± 3.9 | N/A |
| AIH + L-NAME | 37.8 ± 0.2 | 268.2 ± 9.0 | 47.4 ± 1.0 | 7.319 ± 0.006 | 96.5 ± 6.6 | N/A | |
| AIH + nNOS-1 | 37.6 ± 0.1 | 277.5 ± 6.3 | 47.3 ± 0.7 | 7.338 ± 0.009 | 86.0 ± 2.9 | N/A | |
| AIH + 1400W | 37.5 ± 0.2 | 292.9 ± 11.9 | 47.2 ± 0.8 | 7.351 ± 0.007 | 87.7 ± 7.8 | N/A |
Values are means ± 1SEM.
significant difference from baseline;
significant difference from AIH+vehicle treated group at the respective time point; p<0.05. Tb, body temperature; PaO2 and PaCO2, arterial pressure of oxygen and carbon dioxide, respectively; MAP, mean arterial pressure; amplitude of integrated phrenic nerve burst amplitude expressed as a % change from baseline nerve burst amplitude.