Table 2.
Effect of PVN stimulation on cardiorespiratory variables after blockade of OT receptors in preBötC
| Drug | DEMG (Au) | Min DEMG | Ti (s) | Te (s) | f (breaths/min) | GGEMG (Au) | Min GGEMG | BP (mmHg) | HR (bpm) | 
|---|---|---|---|---|---|---|---|---|---|
| ControlBaseline | 0.46 ± 0.07 | 24.0 ± 3.7 | 0.26 ± 0.02 | 0.91 ± 0.07 | 53 ± 3 | 0.49 ± 0.03 | 25.7 ± 2.1 | 106 ± 6 | 426 ± 6 | 
| L-368899 | 0.39 ± 0.07 | 19.8 ± 3.7 | 0.25 ± 0.02 | 0.94 ±0.06 | 51 ± 3 | 0.40 ± 0.04 | 20.7 ± 2.2* | 92 ± 6* | 422 ± 7 | 
| Bicuculline | 0.35 ± 0.07 | 18.3 ± 3.7 | 0.21 ± 0.04 | 0.97 ± 0.09 | 52 ± 3 | 0.38 ± 0.06 * | 19.7 ± 3.2* | 93 ± 7 | 417 ± 5 | 
Values are means ± SE; n=6 animals.
Represents differences (P < 0.05) between baseline and after administration of L-368899 for Min GGEMG and arterial blood pressure (BP). Differences between values post L-368899 and bicuculline were not significant (P>0.05) indicating that blockade of OT receptor within the preBötC inhibited responses elicited by PVN stimulation. Represents a significant difference (P<0.05) between the treatment and baseline value.