Maximal responses and pD2 values for vasoconstrictors and vasodilators of mesenteric arterial beds from age-matched control, cold-exposed control, hibernated and aroused hamsters
| Age-Matched Control | Cold-Exposed Control | 8 Wk Hibernated | Arousal | ||
|---|---|---|---|---|---|
| Vasoconstriction | |||||
| Nerve stimulation | pD2(Hz) | 21.0 ± 0.8 (12) | 21.2 ± 0.9 (8) | 17.7 ± 0.7 (7)1-a | 21.4 ± 1.0 (6) |
| frequency | Max. (mmHg) | 132.9 ± 8.0 (12) | 125.8 ± 5.9 (8) | 151.6 ± 17.6 (7) | 162.3 ± 14.3 (6) |
| NE | pD2 | 7.4 ± 0.0 (12) | 7.7 ± 0.1 (8) | 7.4 ± 0.1 (7) | 7.7 ± 0.1 (6) |
| Max. (mmHg) | 232.5 ± 16.6 (12) | 234.1 ± 15.5 (8) | 254.4 ± 21.9 (7) | 329.7 ± 23.1 (6)1-b | |
| Vasodilatation | |||||
| ACh | pD2 | 9.7 ± 0.2 (11) | 9.8 ± 0.2 (13) | 9.8 ± 0.2 (5) | |
| Max. (mmHg) | 65.5 ± 6.3 (11) | 56.3 ± 5.2 (13) | 64.8 ± 6.7 (5) | ||
| UTP | pD2 | 8.6 ± 0.1 (11) | 8.4 ± 0.2 (13) | 8.2 ± 0.2 (5) | |
| Max. (mmHg) | 53.0 ± 3.8 (11) | 48.3 ± 3.9 (13) | 53.6 ± 5.2 (5) |